WO2011070769A1 - Information display panel and method for manufacturing the same - Google Patents

Information display panel and method for manufacturing the same Download PDF

Info

Publication number
WO2011070769A1
WO2011070769A1 PCT/JP2010/007114 JP2010007114W WO2011070769A1 WO 2011070769 A1 WO2011070769 A1 WO 2011070769A1 JP 2010007114 W JP2010007114 W JP 2010007114W WO 2011070769 A1 WO2011070769 A1 WO 2011070769A1
Authority
WO
WIPO (PCT)
Prior art keywords
information display
display panel
substrate
panel substrate
side panel
Prior art date
Application number
PCT/JP2010/007114
Other languages
French (fr)
Japanese (ja)
Inventor
健 永島
真一 喜多
啓太 石井
Original Assignee
株式会社ブリヂストン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2010073895A external-priority patent/JP2011209325A/en
Priority claimed from JP2010073609A external-priority patent/JP2011141511A/en
Application filed by 株式会社ブリヂストン filed Critical 株式会社ブリヂストン
Publication of WO2011070769A1 publication Critical patent/WO2011070769A1/en

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F1/1677—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133567—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements on the back side
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on translational movement of particles in a fluid under the influence of an applied field
    • G02F1/1675—Constructional details
    • G02F1/1679—Gaskets; Spacers; Sealing of cells; Filling or closing of cells
    • G02F1/1681—Gaskets; Spacers; Sealing of cells; Filling or closing of cells having two or more microcells partitioned by walls, e.g. of microcup type

Definitions

  • the present invention relates to an information display panel for displaying information by moving a display medium and a method for manufacturing the same.
  • BM black matrix
  • FIG. 16 is a diagram showing an example of the configuration of an information display panel having a conventional black matrix.
  • 51 is a transparent observation-side panel substrate
  • 52 is an electrode made of indium tin oxide (ITO) formed on the observation-side panel substrate 51
  • 53 is a black provided on the electrode 52.
  • Matrix layer 54 is a partition for forming the cell 55
  • 56 is a rear panel substrate
  • 57 is an electrode formed on the rear panel substrate 56
  • 58 is a rear panel substrate 56
  • electrode 57 and partition 54 an adhesive for joining 54
  • 61 B is a black display medium configured as a particle group including charged black particles 61 Ba enclosed in the cell 55
  • 61 W is a charged white particle 61 Wa enclosed in the cell 55. It is the white display medium comprised as a particle group containing.
  • the black matrix layer 53 is usually provided by patterning by photolithography on the surface of the ITO electrode 52 formed on the transparent panel substrate 51 on the observation side. In this manner, the black matrix layer 53 is formed by photolithography. However, since the width of the black matrix layer 53 is adjusted by the exposure amount when photolithography is performed, high-definition patterning is difficult.
  • the black matrix layer 53 when the black matrix layer 53 is formed by photolithography, it is washed after exposure and the material of the unexposed part is removed, but it cannot be completely removed. 63 was generated in the cell 55. In this case, since the black matrix layer 53 has conductivity, the residue 63 causes a leak between the panel substrates in which the electrode 52 on the observation-side panel substrate 51 and the electrode 57 on the back-side panel substrate 56 are short-circuited. The residue 63 is black, so that the white reflectance of the information display panel is lowered and the contrast is deteriorated. Further, the above-described problem of leakage between panel substrates and the problem of deterioration in contrast occur not only when the black matrix layer is used but also when the white matrix layer is used.
  • the object of the present invention is to solve the above-mentioned problems and eliminate the problem of residue without using a conventional black matrix layer or the like, thereby preventing leakage between the substrates and eliminating the decrease in contrast. It is an object of the present invention to provide a display panel and a manufacturing method thereof.
  • cells separated from each other by a partition wall are formed between an observation side panel substrate and a back side panel substrate having at least a transparent information display screen area, and between the electrodes provided on the panel substrate.
  • a partition wall for displaying information by moving a display medium by applying a voltage
  • the partition, the back panel substrate, and the back panel corresponding to at least the information display screen area of the information display panel
  • the electrode on the substrate is made of a transparent material, and a colored layer is provided at least in the information display screen region outside the back panel substrate.
  • the colored layer is formed in a portion corresponding to the partition as viewed from the surface substrate side, and the colored layer is the information display screen. Formed on the entire surface of the region, an adhesive layer is formed on the partition, and the observation side panel substrate and the back side panel substrate are fixed via the partition and the adhesive layer, and the observation side panel substrate A scattering layer that scatters light is formed on the outer side of the scattering layer, the scattering layer has unevenness on the surface of the scattering layer, so that the light is scattered; A particle having a refractive index different from that of the refractive index is included in the scattering layer, the colored layer is white or black, and a matrix is arranged between the opposing electrodes corresponding to the cells formed by the partition walls. Pixels 4 formed was that, there is.
  • the method for manufacturing an information display panel according to the present invention is the above-described information display panel manufacturing method, wherein after the information display panel precursor in which a display medium is sealed between the two panel substrates is manufactured, the back surface is manufactured.
  • the colored layer is provided in at least the information display screen area outside the side panel substrate.
  • the colored layer provided in at least the information display screen region on the outer side surface of the back panel substrate is provided by a printing method or photography
  • the colored layer provided in at least the information display screen region on the outer side surface of the back side panel substrate is formed by bonding a sheet member on which the colored layer is formed by a printing method or photolithography to the outer side surface of the back side panel substrate.
  • the information display panel of the present invention without using a colored matrix layer such as a conventional black matrix layer or white matrix layer, at least the information display screen region is transparent between the observation side panel substrate and the back side panel substrate.
  • the information display panel for displaying information by moving the display medium by forming cells isolated from each other by the partition walls and applying a voltage between the electrodes provided on the panel substrate, at least the information display panel
  • the partition, the back side panel substrate, and the electrode on the back side panel substrate corresponding to the information display screen region are made of a transparent material, and at least the information display screen outside the back side panel substrate is a colored layer. Since it is provided in the region, there is no leakage between the substrates due to the residue of the material used to form the colored layer.
  • the colored layer provided outside the back panel substrate is provided on the information display panel.
  • the colored layer provided on the outside of the back side panel substrate is provided in a lattice shape corresponding to the portion where the transparent partition walls are formed in the information display screen region.
  • the partition walls for securing the inter-substrate gap are arranged so as not to overlap the electrode pairs arranged in the matrix, any colored layer can be easily provided.
  • the manufacturing unit price can be reduced as compared with the case of manufacturing.
  • a colored layer provided outside the back panel substrate may be provided not on the entire back panel substrate of the information display panel but on the entire information display screen region, or in the information display screen region and the transparent partition. In the case where it is provided in a lattice shape corresponding to the portion where the colored layer is formed, the amount of the material for forming the colored layer can be reduced, and the material cost can be reduced. Furthermore, since a printing method can be adopted as a method for forming a colored layer, or a method for adhering a sheet on which a colored layer is formed can be adopted, a colored layer can be easily formed on a portion where the colored layer is to be arranged. Can be provided.
  • pixels arranged in a matrix have transparent common electrodes formed in the information display screen region of the observation side panel substrate, and TFTs are provided in the information display screen region of the back side panel substrate.
  • TFTs are provided in the information display screen region of the back side panel substrate.
  • pixels arranged in a matrix form transparent stripe electrodes formed in an information display screen area of the observation side panel substrate, and an information display screen of the back side panel substrate.
  • the transparent stripe electrode formed in the region is formed as an electrode pair opposed to each other so as to be orthogonal to each other
  • the information display panel of the present invention can be applied to both the passive matrix drive and the active matrix drive. Applicable.
  • the black matrix placement position and the white matrix placement position can be freely determined.
  • the black matrix and the white matrix can be placed all around each pixel, placed around every pixel, and the width of the transparent partition.
  • the black matrix effect and the white matrix effect can be easily adjusted by adjusting the width of the black matrix and the width of the white matrix.
  • the display screen area can be freely set by combining the area where the black matrix effect is desired and the area where the white matrix effect is desired.
  • (A), (b) is a figure which shows the structure of an example of the information display panel used as the object of this invention, respectively.
  • (A), (b) is a figure which shows the structure of the other example of the information display panel used as the object of this invention, respectively.
  • (A), (b) is a figure which shows the structure of the further another example of the information display panel used as the object of this invention, respectively. It is a figure for demonstrating an example of the information display panel of this invention. It is a figure for demonstrating prevention of the fall of visibility resulting from the reflection of the image received from the back side in the information display panel of this invention.
  • (A), (b) is a figure for demonstrating an example of the state of the colored layer seen from the observation side in the information display panel of this invention, respectively.
  • (A), (b) is a figure for demonstrating the other example of the state of the colored layer seen from the observation side in the information display panel of this invention, respectively.
  • (A), (b) is a figure for demonstrating the further another example of the state of the colored layer seen from the observation side in the information display panel of this invention, respectively.
  • (A), (b) is a figure for demonstrating the further another example of the state of the colored layer seen from the observation side in the information display panel of this invention, respectively. It is a figure for demonstrating the information display screen area
  • (A)-(e) is a figure for demonstrating an example of the colored layer in the information display panel shown in FIG. 11, respectively. It is a figure for demonstrating the information display screen area
  • (A)-(d) is a figure for demonstrating an example of the colored layer in the information display panel shown in FIG. 13, respectively. It is a figure for demonstrating an example of the scattering layer in the information display panel of this invention. It is a figure which shows the structure of an example of the information display panel which has the conventional black matrix. It is a figure for demonstrating the problem in the information display panel which has the conventional black matrix.
  • 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.
  • 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.
  • At least two types of display media configured as a particle group including particles having at least optical reflectance and chargeability are included.
  • the electrode provided on the substrate 1 in each cell formed by the partition walls 4 is a white display medium 3W configured as a particle group and a black display medium 3B configured as a particle group including positively charged black particles 3Ba).
  • 5 (stripe electrode) and the electrode 6 (stripe electrode) provided on the substrate 2 are applied to the substrate 1, 2, and 2 according to an electric field generated by applying a voltage between a pair of pixel electrodes formed to face each other. Move vertically. Then, the white display medium 3W is visually recognized by the observer as shown in FIG.
  • FIG. 1A 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. Is displayed in a matrix with black and white dots.
  • 9 is an adhesive.
  • the partition in front is abbreviate
  • At least two types of display media (here, including negatively charged white particles 3Wa) configured as a particle group including particles having at least optical reflectance and chargeability are included.
  • the electrode provided on the substrate 1 in each cell formed by the partition walls 4 is a white display medium 3W configured as a particle group and a black display medium 3B configured as a particle group including positively charged black particles 3Ba).
  • 5 (pixel electrode with TFT (thin film transistor)) and the electrode 6 (common electrode) provided on the substrate 2 are moved vertically to the substrates 1 and 2 in accordance with an electric field generated by applying a voltage. Then, the white display medium 3W is visually recognized by the observer as shown in FIG.
  • 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. Is displayed in a matrix with black and white dots.
  • 9 is an adhesive.
  • the partition in front is abbreviate
  • an example is shown in which cells and pixels (dots) have a one-to-one correspondence and are arranged in a matrix.
  • the example of the information display panel of the charged particle gas moving type in which the cell space is filled with gas has been described.
  • gas for example, air
  • an insulating liquid is used instead of moving in vacuum and gas.
  • an information display panel of a moving type (electrophoresis type) in charged particle liquid.
  • FIGS. 3A and 3B a cell is formed in which particles containing charged particles are sealed in a capsule 8 together with a transparent insulating liquid 7 as display media 3W and 3B.
  • An information display panel of a moving method (electrophoresis method) in a charged particle liquid configuration in which the partition walls 4 are not provided may be used.
  • FIG. 4 is a view for explaining an example of the information display panel of the present invention.
  • the information display panel which is the target of the example shown in FIG. 4 is a passive matrix drive type information display panel composed of stripe electrodes in which the electrodes shown in FIGS.
  • 2 is a transparent portion corresponding to the information display screen area of the observation side panel substrate
  • 6 is a transparent stripe electrode made of indium tin oxide (ITO) formed on the observation side panel substrate 2
  • 4 is a cell.
  • ITO indium tin oxide
  • 21 is a transparent partition wall for securing a gap between the panel substrates
  • 1 is a transparent portion corresponding to the information display screen area of the rear panel substrate
  • 5 is a transparent stripe electrode formed on the rear panel substrate 1
  • 9 is A transparent adhesive for bonding the back side panel substrate 1 and the transparent partition wall 4
  • 3B is a black display medium configured as a particle group including the charged black particles 3Ba enclosed in the cell 21, and 3W is in the cell 21
  • 3 is a white display medium configured as a particle group including the charged white particles 3Wa encapsulated in.
  • FIG. 4 shows an example of the information display panel according to the present invention.
  • the passive matrix drive type information display panel having an electrode pair formed by intersecting opposing stripe electrodes as a pixel is characterized by at least the observation side corresponding to the information display screen region.
  • the panel substrate portion 2 and the back side panel substrate portion 1 are made transparent, at least the partition walls 4 in the information display screen region are made transparent, and are formed on at least the observation side panel substrate portion 2 and the back side panel substrate portion 1 corresponding to the information display screen region.
  • the stripe electrode is made transparent, and the colored layer 31 functioning as a black matrix or a white matrix is formed at least outside the portion corresponding to the information display screen region 1 of the rear panel substrate. Further, in the configuration shown in FIG.
  • the active matrix drive type information display panel is characterized in that at least the observation side panel substrate portion 2 and the back side panel substrate portion 1 corresponding to the information display screen region are transparent, at least the partition wall 4 in the information display screen region is transparent, The common electrode formed on the observation-side panel substrate portion 2 corresponding to the information display screen region is made transparent, and the colored layer 31 functioning as a black matrix or white matrix is provided outside at least the portion corresponding to the information display screen region 1 of the back-side panel substrate. It is a point to form.
  • the black matrix or the white matrix is not provided inside the observation side panel substrate 2, the black matrix or the white matrix is formed. Even if there is a residue that tends to occur, the residue does not remain between the panel substrates. Therefore, the leakage between the substrates due to the residue is eliminated, and the increase in black reflectance is suppressed, or the decrease in white reflectance is suppressed, and a good contrast can be obtained.
  • observation-side panel substrate portion 2 and the back-side panel substrate portion 1 corresponding to the information display screen region are made transparent, and at least the partition walls 4 in the information display screen region are made transparent and arranged in a matrix, and at least the observation side corresponding to the information display screen region Since the electrode formed on the panel substrate portion 2 is transparent, and in this example, the adhesive 9 for bonding the back side panel substrate 1 and the transparent partition wall 4 is also transparent, the information display panel from the observation side , The colored layer 31 formed outside the portion corresponding to the information display screen region 1 of the back side panel substrate looks like a matrix at the portion corresponding to the partition wall 4 of the observation side panel substrate. The same effect as a white matrix can be obtained.
  • the colored layer 31 may be formed on the entire outer surface of the rear panel substrate 1 or in an area corresponding to the information display screen region on the outer side of the rear panel substrate 1. Alternatively, it may be formed only on the back side of the portion where the transparent partition wall 4 in the area corresponding to the information display screen area of the panel substrate 1 on the back side is formed. Since the colored layer 31 is provided outside the panel substrate 1 on the back side, the colored layer 31 can be easily provided by a printing method or a method in which a sheet on which a colored layer has been previously formed is bonded.
  • the amount of material used to form the colored layer 31 can be reduced, and the material cost can be reduced. Also, in any case, by changing the color of the colored layer formed on the information display panel of the same configuration, it is possible to individually respond to the customer's request. Compared with the case of forming an information display panel, the manufacturing unit price can be reduced.
  • the black matrix and white matrix can be arranged freely at the position corresponding to the transparent partition wall 4, so that the black matrix and white matrix can be arranged all around each pixel, or around each pixel. It is possible to easily adjust the black matrix effect and the white matrix effect by arranging them at the same position or adjusting the width of the black matrix or the width of the white matrix.
  • This matrix-like colored layer can be directly formed on the outer surface of the back panel substrate by photolithography or printing, but it is formed on a sheet separate from the panel substrate by photolithography or printing, and the sheet Can be bonded to the outer surface of the rear panel substrate.
  • the color of the colored layer 31 is not particularly limited, but is preferably white or black.
  • the colored layer 31 is white, the same effect as the example using the conventional white matrix layer is obtained, and when the colored layer 31 is black, the same effect as the example using the conventional black matrix layer is obtained. It is done. In either case, contrast can be improved and image visibility can be improved. Other colors such as blue and green can also be used. In that case, the entire display can be slightly blue and green, and a blackboard-like display can be obtained.
  • the method for forming the colored layer 31 on the outer surface of the back panel substrate 1 is not particularly limited, but it is preferably formed by applying or pasting the colored layer 31, as an example.
  • a printing method can be suitably used.
  • the colored layer 31 is formed outside the back panel substrate. Therefore, after the panel is assembled, that is, after the outside of the back panel substrate of the information display panel precursor.
  • the colored layer 31 of any color can be easily provided.
  • the conventional information display panel is affected by the color of the member arranged on the back side when the arrangement density of particles constituting the display medium is low.
  • the information display panel of the present invention has a simple structure in which the colored layer 31 is simply formed on the outer surface of the panel substrate 1 on the back side, so that 15 sheets are formed with one sheet 41 as shown in FIG. Even in the case of so-called multi-pieces obtaining the panel 44, the alignment mark 42 when the sheet 41 is scribed, the lot number (Lot. No.) print 43 of the sheet 41, etc. are not affected, and only the panel is colored. It is easy to provide the layer 31.
  • 7 (a), 7 (b), 8 (a), and 8 (b) are diagrams for explaining an example of the state of the colored layer viewed from the observation side in the information display panel of the present invention.
  • 7A has a basic configuration of a panel using stripe electrodes 5 and 6 as in the example shown in FIGS. 1A and 1B
  • FIG. 7B shows the configuration shown in FIGS.
  • the TFT substrate 1 is used to form the common electrode 6 and the pixel electrode 5 as a basic configuration, and in each example, the back side panel substrate 1 has a black color outside the transparent information display screen area.
  • the colored layer 31 is formed.
  • FIG. 8A shows a basic configuration of a panel using the transparent insulating liquid 7 and the microcapsules 8 as in the example shown in FIGS. 3A and 3B.
  • the black colored layer 31 is formed outside the transparent information display screen region portion of the back side panel substrate 1.
  • FIGS. 9A, 9B, 10A, and 10B are diagrams for explaining still another example of the state of the colored layer viewed from the observation side in the information display panel of the present invention. is there.
  • FIGS. 9 (a) and 10 (a) show the state of the colored layer as viewed from the observation side
  • FIGS. 9 (b) and 10 (b) show the states of FIGS. 9 (a) and 10 (a), respectively.
  • a partial cross-section is shown.
  • 9 (a) and 9 (b) are basically composed of a panel using transparent stripe electrodes 5 and 6 as in the example shown in FIG. 7 (a), but a cell 21 formed by transparent partition walls 4 is used.
  • two transparent stripe electrodes 5 and 6 are provided so as to cross each other, and four pixels arranged in a matrix formed by the electrode crossing portions are formed in a 2 ⁇ 2 arrangement.
  • a colored layer 31 is formed on the entire information display screen area outside the back side panel substrate 1.
  • 10 (a) and 10 (b) like the example shown in FIGS. 9 (a) and 9 (b), each of the two transparent stripe electrodes corresponds to the cell 21 formed by the transparent partition wall 4.
  • a red color filter 11R, a green color filter 11G, a blue color filter 11BL, and a colorless and transparent color filter 11T are formed.
  • FIG. 11 shows an example of a dot matrix type passive drive panel in which a positively charged black particle group and a negatively charged white particle group are enclosed as a display medium in a cell space between substrates surrounded by partitions. 12 (a), at least the information display screen area portion, as shown in FIG. 12 (b), in addition to the example in which the colored layer is disposed on the entire outer surface of the back side panel substrate where at least the information display screen area portion is transparent.
  • a colored layer is arranged on the entire surface of the information display screen region where the back side stripe electrode and the observation side stripe electrode of the back side panel substrate having a transparent surface intersect, as shown in FIG.
  • At least the information display screen region part An example in which colored layers are arranged in a grid pattern at positions corresponding to partition walls in the information display screen area of the back side panel substrate with transparent, as shown in FIG. An example in which a black layer and a white layer are separated and arranged on the entire information display screen area of a bright back panel substrate (an example in which a black matrix screen and a white matrix screen are obtained in one screen), FIG. An example in which a black layer is arranged in a lattice shape at a position corresponding to a partition in the information display screen area of the back side panel substrate where at least the information display screen region portion is transparent as shown in FIG. , Etc.
  • FIG. 13 shows an example of a dot matrix type active drive panel in which a positively charged black particle group and a negatively charged white particle group are enclosed as a display medium in a cell space between substrates surrounded by a partition wall.
  • 14 (a) at least the information display screen area portion, as shown in FIG. 14 (b), in addition to the example in which the colored layer is disposed on the entire outer surface of the rear panel substrate where at least the information display screen area portion is transparent.
  • a colored layer is disposed on the entire information display screen area of the back side panel substrate having a transparent surface, as shown in FIG.
  • FIG. 15 is a view for explaining an example of the scattering layer in the information display panel of the present invention.
  • the same members as those shown in FIGS. 1 to 14 described above are denoted by the same reference numerals, and the description thereof is omitted.
  • the scattering layer 45 is formed outside the observation side panel substrate 2.
  • the outside of the observation side panel substrate 2 refers to the side opposite to the back side panel substrate 1 side. That is, it is a side close to the observer of the observation side panel substrate 2.
  • the scattering layer 45 is formed on the observation side panel substrate 2.
  • the scattering layer 45 scatters light.
  • the scattering layer 45 does not ask
  • light may be scattered by having irregularities on the surface of the scattering layer 45.
  • the scattering layer 45 has irregularities on the surface on the viewer side.
  • the scattering layer 45 may scatter light by including particles having a refractive index different from the refractive index of the scattering layer 45 inside the scattering layer 45. Light is scattered by internal scattering due to the difference between the refractive index of the scattering layer 45 and the particles. Both methods may be combined, or the scattering layer may be formed by another method.
  • the scattering layer 45 is formed on the observation side panel substrate 2. Specifically, the scattering layer 45 is formed on the outer surface of the observation side panel substrate 2.
  • the scattering layer 45 is formed by attaching, for example, an AG (Anti-Glare) film. A commercially available AG film is used.
  • the scattering layer 45 may be formed before the observation side panel substrate 2 and the back side panel substrate 1 are bonded together.
  • a scattering layer 45 that scatters light is formed outside the observation-side panel substrate 2. Unevenness may occur in the adhesive layer 9 formed on the partition wall 4 to connect the observation side panel substrate 2 and the back side panel substrate 1. In addition, bubbles may enter the adhesive layer 9. When the scattering layer 45 is not formed, such irregularities and bubbles in the adhesive layer 9 are visually recognized by the observer by making the partition wall 4 transparent. By forming the scattering layer 45 outside the observation side panel substrate 2, the light from the adhesive layer 9 is scattered. For this reason, the observer does not clearly observe the unevenness of the adhesive layer 9. Therefore, even if the partition 4 is transparent, display quality can be maintained.
  • the scattering layer 45 Furthermore, by forming the scattering layer 45, reflected light from sunlight or indoor lighting is scattered. That is, the intensity of specular reflection light from sunlight or indoor lighting is reduced. For this reason, it is possible to prevent the sun and room lighting from being reflected on the screen. As a result, the screen is easy to see for the observer, and the screen visibility and display quality can be improved.
  • the observation-side panel substrate 2 When a material that is easily damaged (for example, glass) is used for the observation-side panel substrate 2, if the observation-side panel substrate 2 is damaged while the information display panel is in use, the observer will be broken by the fragments of the observation-side panel substrate 2. May be injured.
  • the scattering layer 45 since the scattering layer 45 is formed outside the observation side panel substrate 2, the scattering layer 45 functions as a scattering prevention film. For this reason, since it can suppress that the fragment of the observation side panel board
  • the substrate on which at least the information display area is transparent and the color of the display medium can be confirmed from the outside of the information display panel is referred to as an observation side panel substrate and a back side panel substrate.
  • a material having high visible light transmittance in the transparent region and good heat resistance as the panel substrate is suitable.
  • the substrate material include polymer materials such as polyethylene terephthalate, polyethylene naphthalate, polyethersulfone, polyethylene, polycarbonate, polyimide, and acrylic, glass, quartz, and hard plastic.
  • the thickness of the substrate is preferably 2 ⁇ m to 5000 ⁇ m, more preferably 5 ⁇ m to 2000 ⁇ m. If it is too thin, it will be difficult to maintain the strength and uniformity of the distance between the substrates, and if it is thicker than 5000 ⁇ m, it will be a thin information display panel. Is inconvenient.
  • Electrode forming materials include metals such as aluminum, silver, nickel, copper, and gold, indium tin oxide (ITO), zinc-doped indium oxide (IZO), aluminum-doped zinc oxide (AZO), indium oxide, and conductive tin oxide.
  • ITO indium tin oxide
  • IZO zinc-doped indium oxide
  • AZO aluminum-doped zinc oxide
  • conductive tin oxide examples include conductive metal oxides such as antimony tin oxide (ATO) and conductive zinc oxide, and conductive polymers such as polyaniline, polypyrrole, and polythiophene.
  • the stripe electrode and common electrode provided in the information display screen region include Of these, a transparent one is appropriately selected and used. Since the TFT-attached pixel electrode provided in the information display screen region does not have to be transparent, any material can be used.
  • the electrode As a method for forming the electrode, a method of forming the above-described materials into a thin film by sputtering, vacuum deposition, CVD (chemical vapor deposition), coating, or the like, or metal foil (for example, rolled copper foil) And a method in which a conductive agent is mixed with a solvent or a synthetic resin binder and applied.
  • the electrode thickness may be 0.01 ⁇ m to 10 ⁇ m, preferably 0.05 ⁇ m to 10 ⁇ m, as long as the electrode has sufficient conductivity and does not interfere with light transmission.
  • the partition for securing the inter-substrate gap arranged in the area corresponding to the information display screen area is formed transparently using a transparent material.
  • This partition not only secures the gap between the substrates, but also forms a cell that accommodates the display medium.
  • the height is the same as the predetermined gap between the substrates, but the average particle diameter including the chargeable particles. Is set to 10 ⁇ m to 500 ⁇ m, preferably 10 ⁇ m to 100 ⁇ m, and more preferably 10 ⁇ m to 50 ⁇ m in an information display panel using a particle group having a particle size in the range of 1 ⁇ m to 20 ⁇ m.
  • the partition provided exclusively for forming the cell may be lower than the partition for securing the gap between the substrates or need not be transparent, but the partition in the information display screen region Since this becomes a non-display portion, it is preferable to make the partition dedicated to cell formation as thin as possible.
  • the width of the partition for securing the gap between the substrates is preferably 10 ⁇ m to 100 ⁇ m, while the width of the partition dedicated for cell formation is preferably 2 ⁇ m to 50 ⁇ m.
  • the height and width of these partition walls are appropriately designed according to the shape and arrangement of the electrodes to be arranged, but the width of the partition walls dedicated to cell formation is preferably equal to or less than the width of the partition walls for securing the inter-substrate gap.
  • a partition for securing a gap between the substrates is provided in a region outside the information display screen region, but the partition does not need to be transparent and does not need to form a cell.
  • a both-rib method in which ribs are formed on each of the opposing substrates and then bonded, and a one-rib method in which ribs are formed only on one substrate are conceivable.
  • any method is preferably used. Bonding between the rear panel substrate and the observation panel substrate is done by placing an adhesive between the upper surface of the partition wall for securing the inter-substrate gap and the counterpart panel substrate, or between the substrates formed on both panel substrates. This is done by placing an adhesive between the upper surfaces of the partition walls for securing the gap.
  • This adhesive is preferably one that becomes transparent after curing, but in some cases, other colored adhesives can be used.
  • the transparent adhesive examples include an epoxy adhesive and an acrylic adhesive, and the transparent adhesive can be used with a thickness of about 1 ⁇ m to 10 ⁇ m. When a colored adhesive is used, a pigment having a desired color can be blended with the transparent adhesive.
  • the adhesive used for bonding the back-side panel substrate and the observation-side panel substrate in the area outside the information display screen area does not need to be transparent.
  • the cells formed by the partition walls made of these ribs include a quadrangular shape, a triangular shape, a circular shape, a hexagonal shape, a stepped octagonal shape, and a racetrack shape as viewed from the substrate plane direction. Pixels arranged in a matrix are placed at corresponding positions corresponding to the cells.
  • the black matrix effect and the white matrix effect can be adjusted by adjusting the width of the portion (area of the cell frame portion) corresponding to the partition wall section visible from the observation side.
  • 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 the information display panel of the present invention, and among these, a photolithography method using a resist film and a mold transfer method are suitably used.
  • An observation side panel substrate (a glass substrate having a thickness of 700 ⁇ m with a stripe electrode obtained by patterning a 100 nm thick ITO film in a 300 ⁇ m width and 30 ⁇ m space) and a back side panel substrate (a 100 nm thick ITO film in a 300 ⁇ m width and 30 ⁇ m space)
  • a white display medium configured by including negatively charged white particles having an average particle diameter of 9.2 ⁇ m in a space between substrates facing a 50 ⁇ m interval between a patterned glass substrate having a stripe electrode and a thickness of 700 ⁇ m;
  • An information display panel according to the example was manufactured based on an information display panel on which a black display medium including positively chargeable black particles having an average particle diameter of 9.0 ⁇ m was disposed.
  • a transparent dry film resist for forming a partition Alfo NIT2 (manufactured by Nichigo Morton), is laminated on the ITO stripe electrode of the observation side panel substrate.
  • An observation side panel substrate on which a group was arranged was obtained.
  • a black matrix material layer in which a black pigment is blended in a region corresponding to an information display screen region on the surface of the glass substrate on the back side where the ITO stripe electrode is not formed is formed to a thickness of 20 ⁇ m and has a black layer.
  • an information display panel was obtained by pasting together a glass substrate on the observation side on which a predetermined particle group was arranged as a display medium.
  • Example 2 After forming a black matrix material layer containing a black pigment in a region corresponding to an information display screen region on the surface of the glass substrate on the back side where the ITO stripe electrode is not formed, a photolithography technique was used to form a grid-like black matrix corresponding to the partition walls, and a back-side panel substrate with a black layer was obtained. Next, an information display panel was obtained by bonding to a glass substrate on the observation side on which a predetermined particle group was arranged as a display medium.
  • Example 3> After forming a black matrix material layer with a thickness of 50 ⁇ m in a region corresponding to the information display screen region on the surface of the glass substrate on the back side where the ITO stripe electrode is not formed, a photolithography technique Is used to form a grid-like black matrix corresponding to the partition walls, and a white matrix material layer in which a white pigment is blended in an area corresponding to the information display screen area is formed to a thickness of 20 ⁇ m. It was set as the back side panel board
  • Example 4 Thickness of water-soluble black paint “Water Super Coat” (manufactured by Asahi Pen Co., Ltd.) by screen printing on the area corresponding to the information display screen area on the back side of the glass substrate where the ITO stripe electrode is not formed After forming a back side panel substrate with a black layer by forming it to 20 ⁇ m, an information display panel was obtained by pasting it together with a glass substrate on the observation side on which a predetermined particle group was arranged as a display medium.
  • Water Super Coat manufactured by Asahi Pen Co., Ltd.
  • the above-mentioned observation side panel substrate (a glass substrate having a thickness of 700 ⁇ m with a stripe electrode obtained by patterning an ITO film having a thickness of 100 nm with a width of 30 ⁇ m and a thickness of 30 ⁇ m) and a back side panel substrate (an ITO film having a thickness of 100 nm having a width of 300 ⁇ m and a thickness of 30 ⁇ m).
  • a glass substrate having a stripe electrode patterned with a space and having a thickness of 700 ⁇ m) and a space between the substrates facing each other by a transparent partition wall at an interval of 50 ⁇ m includes negatively charged white particles having an average particle diameter of 9.2 ⁇ m.
  • the information display panel precursor After producing the information display panel precursor in which the configured white display medium and the black display medium configured to include positively charged black particles having an average particle size of 9.0 ⁇ m are prepared, the information display panel precursor Screen printing of water-soluble black paint “Water-based Supercoat” (manufactured by Asahi Pen Co., Ltd.) on the entire outer surface of the rear glass substrate. In to a thickness 20 ⁇ m was obtained information display panel with the black layer.
  • the above-mentioned observation side panel substrate (a glass substrate having a thickness of 700 ⁇ m with a stripe electrode obtained by patterning an ITO film having a thickness of 100 nm with a width of 30 ⁇ m and a thickness of 30 ⁇ m) and a back side panel substrate (an ITO film having a thickness of 100 nm having a width of 300 ⁇ m and a thickness of 30 ⁇ m).
  • a glass substrate having a stripe electrode patterned with a space and having a thickness of 700 ⁇ m) and a space between the substrates facing each other by a transparent partition wall at an interval of 50 ⁇ m includes negatively charged white particles having an average particle diameter of 9.2 ⁇ m.
  • the information display panel precursor After producing the information display panel precursor in which the configured white display medium and the black display medium configured to include positively charged black particles having an average particle size of 9.0 ⁇ m are prepared, the information display panel precursor Screen-printed water-soluble white paint “Water-based Supercoat” (manufactured by Asahi Pen Co., Ltd.) on the entire outer surface of the rear glass substrate In to a thickness 20 ⁇ m was obtained information display panel with white layer.
  • Screen-printed water-soluble white paint “Water-based Supercoat” manufactured by Asahi Pen Co., Ltd.
  • the above-mentioned observation side panel substrate (a glass substrate having a thickness of 700 ⁇ m with a stripe electrode obtained by patterning an ITO film having a thickness of 100 nm with a width of 30 ⁇ m and a thickness of 30 ⁇ m) and a back side panel substrate (an ITO film having a thickness of 100 nm having a width of 300 ⁇ m and a thickness of 30 ⁇ m).
  • a glass substrate having a stripe electrode patterned with a space and having a thickness of 700 ⁇ m) and a space between the substrates facing each other by a transparent partition wall at an interval of 50 ⁇ m includes negatively charged white particles having an average particle diameter of 9.2 ⁇ m.
  • the information display panel precursor After producing the information display panel precursor in which the configured white display medium and the black display medium configured to include positively charged black particles having an average particle size of 9.0 ⁇ m are prepared, the information display panel precursor Black film made of polyethylene terephthalate (PET) with acrylic adhesive on the entire outer surface of the back glass substrate ( To obtain an information display panel with the black layer by bonding the 50 [mu] m).
  • PET polyethylene terephthalate
  • the above-mentioned observation side panel substrate (a glass substrate having a thickness of 700 ⁇ m with a stripe electrode obtained by patterning an ITO film having a thickness of 100 nm with a width of 30 ⁇ m and a thickness of 30 ⁇ m) and a back side panel substrate (an ITO film having a thickness of 100 nm having a width of 300 ⁇ m and a thickness of 30 ⁇ m).
  • a glass substrate having a stripe electrode patterned with a space and having a thickness of 700 ⁇ m) and a space between the substrates facing each other by a transparent partition wall at an interval of 50 ⁇ m includes negatively charged white particles having an average particle diameter of 9.2 ⁇ m.
  • the information display panel precursor After producing the information display panel precursor in which the configured white display medium and the black display medium configured to include positively charged black particles having an average particle size of 9.0 ⁇ m are prepared, the information display panel precursor White film made of polyethylene terephthalate (PET) with acrylic adhesive on the entire outer surface of the back glass substrate ( To obtain an information display panel with white layer by bonding the 50 [mu] m).
  • PET polyethylene terephthalate
  • a white matrix material layer in which a white pigment is blended in a region corresponding to the information display screen region on the surface of the glass substrate on the back side where the ITO stripe electrode is not formed is formed to a thickness of 20 ⁇ m and has a white layer.
  • an information display panel was obtained by pasting together a glass substrate on the observation side on which a predetermined particle group was arranged as a display medium.
  • Example 10> After forming a white matrix material layer having a thickness of 20 ⁇ m in a region corresponding to the information display screen region on the surface of the glass substrate on the back side where the ITO stripe electrode is not formed, a photolithography technique was used to form a lattice-shaped white matrix corresponding to the partition walls to obtain a back side panel substrate with a white layer. Next, an information display panel was obtained by bonding to a glass substrate on the observation side on which a predetermined particle group was arranged as a display medium.
  • a black resist film is formed to a thickness of 5 ⁇ m on a white film (thickness 50 ⁇ m) made of polyethylene terephthalate (PET), and a mask corresponding to the transparent partition disposed around the pixels of the following information display panel precursor is used.
  • a black matrix was formed by photolithography.
  • the above-mentioned observation side panel substrate a glass substrate having a thickness of 700 ⁇ m with a stripe electrode obtained by patterning an ITO film having a thickness of 100 nm with a width of 30 ⁇ m and a space of 30 ⁇ m
  • a back side panel substrate 300 ⁇ m of an ITO film having a thickness of 100 nm.
  • PET polyethylene terephthalate
  • Example 12 First, black 5 mm in height using black flexo ink at a position corresponding to the transparent partition arranged around the pixel of the following information display panel precursor on a white film (thickness 50 ⁇ m) made of polyethylene terephthalate (PET). The matrix was formed by flexographic printing.
  • the above-mentioned observation side panel substrate a glass substrate having a thickness of 700 ⁇ m with a stripe electrode obtained by patterning an ITO film having a thickness of 100 nm with a width of 30 ⁇ m and a space of 30 ⁇ m
  • a back side panel substrate 300 ⁇ m of an ITO film having a thickness of 100 nm.
  • PET polyethylene terephthalate
  • ⁇ Comparative Example 1> After forming a black matrix material layer containing black pigment on the ITO stripe electrode of the observation side panel substrate to a thickness of 5 ⁇ m, a transparent dry film resist for forming a partition, Alfo NIT2 (manufactured by Nichigo Morton) And an observation side panel substrate in which a black matrix is disposed between the partition walls and the panel substrate is obtained by photolithography. Next, after arranging a predetermined particle group as a display medium in the cell of the observation side panel substrate, it was bonded to a glass substrate on the back side to obtain an information display panel.
  • ⁇ Comparative Example 2> After forming a black matrix material layer containing white pigment on the ITO stripe electrode of the observation side panel substrate to a thickness of 5 ⁇ m, a transparent dry film resist for forming a partition, Alfo NIT2 (manufactured by Nichigo Morton) And an observation side panel substrate in which a black matrix is disposed between the partition walls and the panel substrate is obtained by photolithography. Next, after arranging a predetermined particle group as a display medium in the cell of the observation side panel substrate, it was bonded to a glass substrate on the back side to obtain an information display panel.
  • the time taken for photolithography performed to obtain a black matrix and a white matrix was black in Examples 1, 2, 3, 9, and 10.
  • the time taken for the photolithography performed to obtain the matrix and the white matrix was the same as that for each black matrix and the white matrix, but it was performed in a shorter time than the production process conditions that allowed for a safety factor. Under these conditions, a residue is likely to be generated after photolithography, or leakage between substrates was generated in all the information display panels of Comparative Example 1 and Comparative Example 2 manufactured. Inter-substrate leakage was measured by measuring the current value flowing between the opposing panel substrates in the completed information display panel, and the current value measured on the normal panel was more than five times the reference value.
  • a colored layer such as a black matrix for obtaining a black matrix effect or a white matrix for obtaining a white matrix effect is provided with a conventional information display panel. Because it is not provided inside the panel substrate as in (Comparative Examples 1 and 2), there is no concern that the residual residue will affect the display medium drive even if it is formed by photolithography. So far, a colored layer has been formed by photolithography. Compared to the case where it was, it can be completed in a short time, and it can be formed on the outer surface of the back side panel substrate after producing the information display panel precursor, so the options for arranging the colored layer are expanded, It turned out that the manufacturing method according to the use can be used.
  • the information display panel of the present invention is a notebook computer, an electronic notebook, a portable information device called PDA (Personal Digital Assistants), a display unit of a mobile device such as a mobile phone or a handy terminal, an electronic paper such as an electronic book or an electronic newspaper. , Billboards such as signboards, posters, blackboards (whiteboards), electronic desk calculators, display units for home appliances, automotive products, 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, RF-ID device display unit, as well as POS terminal, car navigation device, display unit of various electronic devices such as watches, etc. It is also suitably used as a display unit (rewritable paper) that is connected to external rewriting means and performs display rewriting.
  • PDA Personal Digital Assistants
  • a particle group including conductive particles, a particle group including semiconductor particles, and the like can be electrically driven via an electrode.
  • Various types of display media can be used.
  • the driving method of the information display panel which is the object of the present invention a simple matrix driving method and a static driving method which do not use a switching element in the panel itself, a three-terminal switching element represented by a thin film transistor (TFT), or a thin film diode
  • TFT thin film transistor
  • the present invention can be applied to an active matrix driving method using a two-terminal switching element represented by (TFD) and information display panels of various types of driving methods.

Abstract

Disclosed is an information display panel wherein a display medium is moved and information is displayed due to at least an information display screen region forming cells between a transparent observation-side panel substrate and a rear surface-side panel substrate by means of partitions, and the information display screen region applying a voltage between electrodes disposed on the panel substrates. The partitions, the rear surface-side panel substrate, and the electrodes on the rear surface-side panel substrate, which correspond to at least the information display screen region of the information display panel, are transparent, and colored layers are disposed in at least the information display screen region on the external side of the rear surface-side panel substrate. The conventional problem of black matrix residue is consequently eliminated, and an information display panel is provided which is therefore able to eliminate decline in contrast without the generation of leaks between substrates.

Description

情報表示用パネルおよびその製造方法Information display panel and manufacturing method thereof
　本発明は、少なくとも情報表示画面領域が透明な観察側パネル基板と背面側パネル基板との間に、隔壁により互いに隔離されたセルを形成し、パネル基板に設けた電極間に電圧を印加することにより、表示媒体を移動させて情報を表示する情報表示用パネルおよびその製造方法に関するものである。 According to the present invention, cells separated from each other by a partition are formed between an observation side panel substrate and a back side panel substrate having at least a transparent information display screen area, and a voltage is applied between electrodes provided on the panel substrate. Thus, the present invention relates to an information display panel for displaying information by moving a display medium and a method for manufacturing the same.
　従来、上述した構成の情報表示用パネルにおいて、画像視認性を改善するために、セルを形成する隔壁と観察側の透明パネル基板との間にブラックマトリックス（ＢＭ）を設けることが一般的であった（例えば、特許文献１参照）。 Conventionally, in an information display panel having the above-described configuration, in order to improve image visibility, it is common to provide a black matrix (BM) between a partition wall forming a cell and a transparent panel substrate on the observation side. (For example, see Patent Document 1).
特開２００４－５４２８７号公報JP 2004-54287 A
　図１６は従来のブラックマトリックスを有する情報表示用パネルの一例の構成を示す図である。図１６に示す例において、５１は透明な観察側のパネル基板、５２は観察側のパネル基板５１上に形成された酸化インジウム錫（ＩＴＯ）からなる電極、５３は電極５２上に設けられたブラックマトリックス層、５４はセル５５を形成するための隔壁、５６は背面側のパネル基板、５７は背面側のパネル基板５６上に形成された電極、５８は背面側のパネル基板５６および電極５７と隔壁５４とを接合するための接着剤、６１Ｂはセル５５内に封入された帯電性黒色粒子６１Ｂａを含んだ粒子群として構成した黒色表示媒体、６１Ｗはセル５５内に封入された帯電性白色粒子６１Ｗａを含んだ粒子群として構成した白色表示媒体である。 FIG. 16 is a diagram showing an example of the configuration of an information display panel having a conventional black matrix. In the example shown in FIG. 16, 51 is a transparent observation-side panel substrate, 52 is an electrode made of indium tin oxide (ITO) formed on the observation- side panel substrate 51, and 53 is a black provided on the electrode 52. Matrix layer 54 is a partition for forming the cell 55, 56 is a rear panel substrate, 57 is an electrode formed on the rear panel substrate 56, 58 is a rear panel substrate 56, electrode 57 and partition 54, an adhesive for joining 54, 61 B is a black display medium configured as a particle group including charged black particles 61 Ba enclosed in the cell 55, and 61 W is a charged white particle 61 Wa enclosed in the cell 55. It is the white display medium comprised as a particle group containing.
　上述した従来の情報表示用パネルにおいて、ブラックマトリックス層５３は、通常、観察側の透明パネル基板５１上に形成したＩＴＯ電極５２の表面上に、フォトリソグラフィーにてパターニングして設けられていた。このようにして、フォトリソグラフィーによりブラックマトリックス層５３を形成しているが、フォトリソグラフィーを行う際の露光量によりブラックマトリックス層５３の幅を調節しているため、高精細なパターニングが難しかった。 In the conventional information display panel described above, the black matrix layer 53 is usually provided by patterning by photolithography on the surface of the ITO electrode 52 formed on the transparent panel substrate 51 on the observation side. In this manner, the black matrix layer 53 is formed by photolithography. However, since the width of the black matrix layer 53 is adjusted by the exposure amount when photolithography is performed, high-definition patterning is difficult.
　また、図１７に示すように、ブラックマトリックス層５３をフォトリソグラフィーにより形成する際、露光した後に洗浄し未露光部の材料を取り除いているが完全に取り除くことが出来ず、ブラックマトリックス層５３の残渣６３がセル５５内に生じていた。この場合、ブラックマトリックス層５３は導電性を有するため、残渣６３が原因となり観察側のパネル基板５１上の電極５２と背面側のパネル基板５６上の電極５７とがショートするパネル基板間のリークが発生したり、残渣６３は黒色であるため情報表示用パネルにおける白反射率が低下し、コントラストが悪化したりする問題が発生していた。また、上述したパネル基板間のリークの問題およびコントラストが悪化する問題は、ブラックマトリックス層を用いた場合だけでなく、ホワイトマトリックス層を用いた場合も同様に発生していた。 Further, as shown in FIG. 17, when the black matrix layer 53 is formed by photolithography, it is washed after exposure and the material of the unexposed part is removed, but it cannot be completely removed. 63 was generated in the cell 55. In this case, since the black matrix layer 53 has conductivity, the residue 63 causes a leak between the panel substrates in which the electrode 52 on the observation-side panel substrate 51 and the electrode 57 on the back-side panel substrate 56 are short-circuited. The residue 63 is black, so that the white reflectance of the information display panel is lowered and the contrast is deteriorated. Further, the above-described problem of leakage between panel substrates and the problem of deterioration in contrast occur not only when the black matrix layer is used but also when the white matrix layer is used.
　本発明の目的は上述した問題点を解消して、従来のブラックマトリックス層等を用いずに残渣の問題をなくすことで、基板間のリークが発生せず、コントラストの低下をなくすことができる情報表示用パネルおよびその製造方法を提供しようとするものである。 The object of the present invention is to solve the above-mentioned problems and eliminate the problem of residue without using a conventional black matrix layer or the like, thereby preventing leakage between the substrates and eliminating the decrease in contrast. It is an object of the present invention to provide a display panel and a manufacturing method thereof.
　本発明の情報表示用パネルは、少なくとも情報表示画面領域が透明な観察側パネル基板と背面側パネル基板との間に、隔壁により互いに隔離されたセルを形成し、パネル基板に設けた電極間に電圧を印加することにより、表示媒体を移動させて情報を表示する情報表示用パネルにおいて、少なくとも情報表示用パネルの情報表示画面領域に対応する、前記隔壁、前記背面側パネル基板および前記背面側パネル基板上の電極を透明な材料から構成するとともに、有色層を前記背面側パネル基板の外側の少なくとも前記情報表示画面領域に設けたことを特徴とするものである。 In the information display panel of the present invention, cells separated from each other by a partition wall are formed between an observation side panel substrate and a back side panel substrate having at least a transparent information display screen area, and between the electrodes provided on the panel substrate. In an information display panel for displaying information by moving a display medium by applying a voltage, the partition, the back panel substrate, and the back panel corresponding to at least the information display screen area of the information display panel The electrode on the substrate is made of a transparent material, and a colored layer is provided at least in the information display screen region outside the back panel substrate.
　また、本発明の情報表示用パネルの好適例としては、前記有色層は、前記表面基板側から視て、前記隔壁と対応する部分に形成されていること、前記有色層は、前記情報表示画面領域の全面に形成されていること、前記隔壁上に接着層が形成され、前記隔壁及び前記接着層を介して前記観察側パネル基板と前記背面側パネル基板とが固定され、前記観察側パネル基板の外側には、光を散乱する散乱層が形成されていること、前記散乱層は、前記散乱層の表面に凹凸を有することにより、光を散乱すること、前記散乱層は、前記散乱層の屈折率と異なる屈折率を持つ粒子を前記散乱層内部に含むこと、前記有色層が白色又は黒色であること、前記隔壁により形成されたセルに対応して、前記対向する電極間にマトリックス配置されている画素を４個形成したこと、がある。 As a preferred example of the information display panel of the present invention, the colored layer is formed in a portion corresponding to the partition as viewed from the surface substrate side, and the colored layer is the information display screen. Formed on the entire surface of the region, an adhesive layer is formed on the partition, and the observation side panel substrate and the back side panel substrate are fixed via the partition and the adhesive layer, and the observation side panel substrate A scattering layer that scatters light is formed on the outer side of the scattering layer, the scattering layer has unevenness on the surface of the scattering layer, so that the light is scattered; A particle having a refractive index different from that of the refractive index is included in the scattering layer, the colored layer is white or black, and a matrix is arranged between the opposing electrodes corresponding to the cells formed by the partition walls. Pixels 4 formed was that, there is.
　本発明の情報表示用パネルの製造方法は、上述した情報表示用パネルの製造方法において、前記２枚のパネル基板間に表示媒体を封入した情報表示用パネルの前駆体を作製した後に、前記背面側パネル基板の外側の少なくとも前記情報表示画面領域に前記有色層を設けることを特徴とするものである。 The method for manufacturing an information display panel according to the present invention is the above-described information display panel manufacturing method, wherein after the information display panel precursor in which a display medium is sealed between the two panel substrates is manufactured, the back surface is manufactured. The colored layer is provided in at least the information display screen area outside the side panel substrate.
　また、本発明の情報表示用パネルの製造方法の好適例としては、前記背面側パネル基板の外側面の少なくとも前記情報表示画面領域に設ける前記有色層を、印刷法またはフォトグラフィーで設けること、前記背面側パネル基板の外側面の少なくとも前記情報表示画面領域に設ける前記有色層を、前記有色層が印刷法またはフォトリソグラフィーで形成されたシート部材を背面側パネル基板の外側面に貼り合わせて形成されること、がある。 As a preferred example of the method for producing the information display panel of the present invention, the colored layer provided in at least the information display screen region on the outer side surface of the back panel substrate is provided by a printing method or photography, The colored layer provided in at least the information display screen region on the outer side surface of the back side panel substrate is formed by bonding a sheet member on which the colored layer is formed by a printing method or photolithography to the outer side surface of the back side panel substrate. There is.
　本発明の情報表示用パネルによれば、従来のブラックマトリックス層やホワイトマトリックス層などの有色マトリックス層を用いずに、少なくとも情報表示画面領域が透明な観察側パネル基板と背面側パネル基板との間に、隔壁により互いに隔離されたセルを形成し、パネル基板に設けた電極間に電圧を印加することにより、表示媒体を移動させて情報を表示する情報表示用パネルにおいて、少なくとも情報表示用パネルの情報表示画面領域に対応する、前記隔壁、前記背面側パネル基板および前記背面側パネル基板上の電極を透明な材料から構成するとともに、有色層を前記背面側パネル基板の外側の少なくとも前記情報表示画面領域に設けたので、有色層を形成するために用いた材料の残渣が原因となる基板間のリークが発生せず、コントラストの低下をなくすことができる情報表示用パネルを得ることができる。それに加えて、パネル裏面となる背面側パネル基板の外側に有色層を設けたことで、背面側から受ける画像の映り込みの影響を抑制したりすることが容易に出来るようになり、画像の視認性が向上した。 According to the information display panel of the present invention, without using a colored matrix layer such as a conventional black matrix layer or white matrix layer, at least the information display screen region is transparent between the observation side panel substrate and the back side panel substrate. In the information display panel for displaying information by moving the display medium by forming cells isolated from each other by the partition walls and applying a voltage between the electrodes provided on the panel substrate, at least the information display panel The partition, the back side panel substrate, and the electrode on the back side panel substrate corresponding to the information display screen region are made of a transparent material, and at least the information display screen outside the back side panel substrate is a colored layer. Since it is provided in the region, there is no leakage between the substrates due to the residue of the material used to form the colored layer. It is possible to obtain information display panel can be eliminated decrease trust. In addition, by providing a colored layer on the outside of the back side panel substrate that is the back side of the panel, it is possible to easily suppress the effect of image reflection received from the back side, so that the image can be visually recognized. Improved.
　また、本発明の好適例として、背面側パネル基板の外側に設ける有色層を、前記情報表示画面領域全面に設けた場合、背面側パネル基板の外側に設ける有色層を、前記情報表示用パネルの背面側パネル基板全面に設けた場合、背面側パネル基板の外側に設ける有色層を、前記情報表示画面領域であって前記透明な隔壁が形成された部分に対応する格子状に設けた場合、前記基板間ギャップ確保用隔壁を、前記マトリックス配置された電極対に重ならないように配置した場合は、いずれも有色層を簡単に設けることができる。さらに、同一の構成の情報表示用パネルに対し形成する有色層の色を変えることで、客先の要望に個別に対応することができるため、最初から客先の要望に応じて情報表示用パネルを作製する場合と比べて、製造単価を安価にすることができる。 As a preferred embodiment of the present invention, when a colored layer provided outside the back panel substrate is provided over the entire information display screen region, the colored layer provided outside the back panel substrate is provided on the information display panel. When provided on the entire surface of the back side panel substrate, when the colored layer provided on the outside of the back side panel substrate is provided in a lattice shape corresponding to the portion where the transparent partition walls are formed in the information display screen region, In the case where the partition walls for securing the inter-substrate gap are arranged so as not to overlap the electrode pairs arranged in the matrix, any colored layer can be easily provided. Furthermore, by changing the color of the colored layer formed for the information display panel having the same configuration, it is possible to individually respond to the customer's request. The manufacturing unit price can be reduced as compared with the case of manufacturing.
　また、背面側パネル基板の外側に設ける有色層を、前記情報表示用パネルの背面側パネル基板全面ではなく、前記情報表示画面領域全面に設けたり、前記情報表示画面領域であって前記透明な隔壁が形成された部分に対応する格子状に設けたりする場合は、有色層を形成する材料の使用量を少なくすることができ、材料費を安価にすることができる。さらに、有色層の形成方法として印刷法を採用したり、有色層が形成されたシートを貼り合わせる方法を採用したりすることができるので、有色層を配置したい部分に対して容易に有色層を設けることができる。さらにまた、本発明の好適例として、マトリックス配置されている画素が、前記観察側パネル基板の情報表示画面領域に形成した透明な共通電極と、前記背面側パネル基板の情報表示画面領域にＴＦＴ付き電極とを対向配置した電極対として形成されている場合、マトリックス配置されている画素が、前記観察側パネル基板の情報表示画面領域に形成した透明ストライプ電極と、前記背面側パネル基板の情報表示画面領域に形成した透明ストライプ電極とを互いに直交するように対向配置した電極対として形成されている場合は、本発明の情報表示用パネルをパッシブマトリックス駆動とアクティブマトリックス駆動とのいずれの駆動方式にも適用できる。 Further, a colored layer provided outside the back panel substrate may be provided not on the entire back panel substrate of the information display panel but on the entire information display screen region, or in the information display screen region and the transparent partition. In the case where it is provided in a lattice shape corresponding to the portion where the colored layer is formed, the amount of the material for forming the colored layer can be reduced, and the material cost can be reduced. Furthermore, since a printing method can be adopted as a method for forming a colored layer, or a method for adhering a sheet on which a colored layer is formed can be adopted, a colored layer can be easily formed on a portion where the colored layer is to be arranged. Can be provided. Furthermore, as a preferred example of the present invention, pixels arranged in a matrix have transparent common electrodes formed in the information display screen region of the observation side panel substrate, and TFTs are provided in the information display screen region of the back side panel substrate. When formed as an electrode pair in which electrodes are arranged opposite to each other, pixels arranged in a matrix form transparent stripe electrodes formed in an information display screen area of the observation side panel substrate, and an information display screen of the back side panel substrate In the case where the transparent stripe electrode formed in the region is formed as an electrode pair opposed to each other so as to be orthogonal to each other, the information display panel of the present invention can be applied to both the passive matrix drive and the active matrix drive. Applicable.
　また、本発明の好適例として、有色層が白色又は黒色である場合において、有色層を白色とした場合は、従来のホワイトマトリックス層を使用した例における白色の残渣の発生をなくすことで黒色の反射率を上げてしまうことを抑制でき、有色層を黒色とした場合は、従来のブラックマトリックス層を使用した例における黒色の残渣の発生をなくすことで白色の反射率を向上させることができ、いずれの場合もコントラストを向上でき画像視認性を良好にすることができる。さらに、ブラックマトリックス配置位置やホワイトマトリックス配置位置を自由に決めることができ、ブラックマトリックスやホワイトマトリックスを各画素の周囲すべてに配置したり、複数の画素毎の周囲に配置したり、透明隔壁の幅を調整することでブラックマトリックスの幅やホワイトマトリックスの幅を調整したりすることによって、ブラックマトリックス効果やホワイトマトリックス効果を容易に調整することができる。さらにまた、表示画面領域に、ブラックマトリックス効果を得たい領域と、ホワイトマトリックス効果を得たい領域とを組み合せ自由に設定することもできる。 Further, as a preferred example of the present invention, when the colored layer is white or black, when the colored layer is white, the generation of the white residue in the example using the conventional white matrix layer is eliminated. It is possible to suppress the increase in reflectance, and when the colored layer is black, the reflectance of white can be improved by eliminating the occurrence of black residue in the example using the conventional black matrix layer, In either case, contrast can be improved and image visibility can be improved. In addition, the black matrix placement position and the white matrix placement position can be freely determined. The black matrix and the white matrix can be placed all around each pixel, placed around every pixel, and the width of the transparent partition. The black matrix effect and the white matrix effect can be easily adjusted by adjusting the width of the black matrix and the width of the white matrix. Furthermore, the display screen area can be freely set by combining the area where the black matrix effect is desired and the area where the white matrix effect is desired.
（ａ）、（ｂ）はそれぞれ本発明の対象となる情報表示用パネルの一例の構成を示す図である。(A), (b) is a figure which shows the structure of an example of the information display panel used as the object of this invention, respectively. （ａ）、（ｂ）はそれぞれ本発明の対象となる情報表示用パネルの他の例の構成を示す図である。(A), (b) is a figure which shows the structure of the other example of the information display panel used as the object of this invention, respectively. （ａ）、（ｂ）はそれぞれ本発明の対象となる情報表示用パネルのさらに他の例の構成を示す図である。(A), (b) is a figure which shows the structure of the further another example of the information display panel used as the object of this invention, respectively. 本発明の情報表示用パネルの一例を説明するための図である。It is a figure for demonstrating an example of the information display panel of this invention. 本発明の情報表示用パネルにおける背面側から受ける画像の映り込みに起因する視認性の低下の防止を説明するための図である。It is a figure for demonstrating prevention of the fall of visibility resulting from the reflection of the image received from the back side in the information display panel of this invention. 本発明の情報表示用パネルにおける１枚のシートで複数枚のパネルを得るいわゆる多個取りの場合の効果を説明するための図である。It is a figure for demonstrating the effect in the case of what is called multi-piece production which obtains several panels with the sheet | seat of the information display panel of this invention. （ａ）、（ｂ）はそれぞれ本発明の情報表示用パネルにおける観察側から見た有色層の状態の一例を説明するための図である。(A), (b) is a figure for demonstrating an example of the state of the colored layer seen from the observation side in the information display panel of this invention, respectively. （ａ）、（ｂ）はそれぞれ本発明の情報表示用パネルにおける観察側から見た有色層の状態の他の例を説明するための図である。(A), (b) is a figure for demonstrating the other example of the state of the colored layer seen from the observation side in the information display panel of this invention, respectively. （ａ）、（ｂ）はそれぞれ本発明の情報表示用パネルにおける観察側から見た有色層の状態のさらに他の例を説明するための図である。(A), (b) is a figure for demonstrating the further another example of the state of the colored layer seen from the observation side in the information display panel of this invention, respectively. （ａ）、（ｂ）はそれぞれ本発明の情報表示用パネルにおける観察側から見た有色層の状態のさらに他の例を説明するための図である。(A), (b) is a figure for demonstrating the further another example of the state of the colored layer seen from the observation side in the information display panel of this invention, respectively. 本発明の情報表示用パネルの一例における情報表示画面領域を説明するための図である。It is a figure for demonstrating the information display screen area | region in an example of the information display panel of this invention. （ａ）～（ｅ）はそれぞれ図１１に示す情報表示用パネルにおける有色層の一例を説明するための図である。(A)-(e) is a figure for demonstrating an example of the colored layer in the information display panel shown in FIG. 11, respectively. 本発明の情報表示用パネルの他の例における情報表示画面領域を説明するための図である。It is a figure for demonstrating the information display screen area | region in the other example of the information display panel of this invention. （ａ）～（ｄ）はそれぞれ図１３に示す情報表示用パネルにおける有色層の一例を説明するための図である。(A)-(d) is a figure for demonstrating an example of the colored layer in the information display panel shown in FIG. 13, respectively. 本発明の情報表示用パネルにおける散乱層の一例について説明するための図である。It is a figure for demonstrating an example of the scattering layer in the information display panel of this invention. 従来のブラックマトリックスを有する情報表示用パネルの一例の構成を示す図である。It is a figure which shows the structure of an example of the information display panel which has the conventional black matrix. 従来のブラックマトリックスを有する情報表示用パネルにおける問題点を説明するための図である。It is a figure for demonstrating the problem in the information display panel which has the conventional black matrix.
＜本発明の対象となる情報表示用パネルについて＞
　まず、本発明の対象となる情報表示用パネルの一例である帯電粒子電界駆動方式情報表示用パネルの基本的な構成について説明する。前記情報表示用パネルでは、対向する２枚の基板間に封入した帯電性粒子を含んだ粒子群として構成した表示媒体に対向対電極から電界が付与される。付与された電界方向にそって、表示媒体が電界による力やクーロン力などによって引き寄せられ、表示媒体が電界方向の変化によって移動方向が切り換わることにより、画像等の情報表示がなされる。従って、表示媒体が、均一に移動し、かつ、表示情報を書き換える時あるいは表示した情報を継続して表示する時の安定性を維持できるように、情報表示用パネルを設計する必要がある。ここで、表示媒体を構成する粒子にかかる力は、粒子同士のクーロン力により引き付けあう力の他に、電極や基板との電気鏡像力、分子間力、液架橋力、重力などが考えられる。 <About the information display panel which is the subject of the present invention>
First, a basic configuration of a charged particle electric field driving system information display panel which is an example of an information display panel which is an object of the present invention will be described. In the information display panel, an electric field is applied from a counter counter electrode 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.
　本発明の対象となる帯電粒子電界駆動方式の情報表示用パネルの例を、図１（ａ）、（ｂ）、図２（ａ）、（ｂ）および図３（ａ）、（ｂ）に基づき説明する。 Examples of a charged particle electric field driving type information display panel that is an object of the present invention are shown in FIGS. 1 (a), 1 (b), 2 (a), 2 (b) and 3 (a), 3 (b). This will be explained based on this.
　図１（ａ）、（ｂ）に示す例では、少なくとも光学的反射率および帯電性を有する粒子を含んだ粒子群として構成した少なくとも２種類の表示媒体（ここでは負帯電性白色粒子３Ｗａを含んだ粒子群として構成した白色表示媒体３Ｗと正帯電性黒色粒子３Ｂａを含んだ粒子群として構成した黒色表示媒体３Ｂを示す）を、隔壁４で形成された各セルにおいて、基板１に設けた電極５（ストライプ電極）と基板２に設けた電極６（ストライプ電極）とが対向直交交差して形成する画素電極対の間に電圧を印加することにより発生する電界に応じて、基板１、２と垂直に移動させる。そして、図１（ａ）に示すように白色表示媒体３Ｗを観察者に視認させて白色の表示を、あるいは、図１（ｂ）に示すように黒色表示媒体３Ｂを観察者に視認させて黒色の表示を、白黒のドットでマトリックス表示している。ここで、９は接着剤である。なお、図１（ａ）、（ｂ）において、手前にある隔壁は省略している。また、ここではセルと画素（ドット）とが１対１に対応し、マトリックス配置されている例を示している。 In the example shown in FIGS. 1A and 1B, at least two types of display media (in this case, including negatively charged white particles 3Wa) configured as a particle group including particles having at least optical reflectance and chargeability are included. The electrode provided on the substrate 1 in each cell formed by the partition walls 4 is a white display medium 3W configured as a particle group and a black display medium 3B configured as a particle group including positively charged black particles 3Ba). 5 (stripe electrode) and the electrode 6 (stripe electrode) provided on the substrate 2 are applied to the substrate 1, 2, and 2 according to an electric field generated by applying a voltage between a pair of pixel electrodes formed to face each other. Move vertically. Then, the white display medium 3W is visually recognized by the observer as shown in FIG. 1A, 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. Is displayed in a matrix with black and white dots. Here, 9 is an adhesive. In addition, in FIG. 1 (a), (b), the partition in front is abbreviate | omitted. Further, here, an example is shown in which cells and pixels (dots) have a one-to-one correspondence and are arranged in a matrix.
　図２（ａ）、（ｂ）に示す例では、少なくとも光学的反射率および帯電性を有する粒子を含んだ粒子群として構成した少なくとも２種類の表示媒体（ここでは負帯電性白色粒子３Ｗａを含んだ粒子群として構成した白色表示媒体３Ｗと正帯電性黒色粒子３Ｂａを含んだ粒子群として構成した黒色表示媒体３Ｂを示す）を、隔壁４で形成された各セルにおいて、基板１に設けた電極５（ＴＦＴ（薄膜トランジスタ）付き画素電極）と基板２に設けた電極６（共通電極）との間に電圧を印加することにより発生する電界に応じて、基板１、２と垂直に移動させる。そして、図２（ａ）に示すように白色表示媒体３Ｗを観察者に視認させて白色の表示を、あるいは、図２（ｂ）に示すように黒色表示媒体３Ｂを観察者に視認させて黒色の表示を、白黒のドットでマトリックス表示している。ここで、９は接着剤である。なお、図２（ａ）、（ｂ）において、手前にある隔壁は省略している。また、ここではセルと画素（ドット）とが１対１に対応し、マトリックス配置されている例を示している。 In the example shown in FIGS. 2 (a) and 2 (b), at least two types of display media (here, including negatively charged white particles 3Wa) configured as a particle group including particles having at least optical reflectance and chargeability are included. The electrode provided on the substrate 1 in each cell formed by the partition walls 4 is a white display medium 3W configured as a particle group and a black display medium 3B configured as a particle group including positively charged black particles 3Ba). 5 (pixel electrode with TFT (thin film transistor)) and the electrode 6 (common electrode) provided on the substrate 2 are moved vertically to the substrates 1 and 2 in accordance with an electric field generated by applying a voltage. 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. Is displayed in a matrix with black and white dots. Here, 9 is an adhesive. In addition, in FIG. 2 (a), (b), the partition in front is abbreviate | omitted. Further, here, an example is shown in which cells and pixels (dots) have a one-to-one correspondence and are arranged in a matrix.
　また、上述した例ではセル空間が気体（例えば空気）で満たされている帯電粒子気体中移動方式の情報表示用パネルの例を説明したが、真空中移動や気体の代わりに、絶縁液体を用いた帯電粒子液体中移動方式（電気泳動方式）の情報表示用パネルとすることもできる。この場合、図３（ａ）、（ｂ）に示すように、帯電性粒子を含んだ粒子群を表示媒体３Ｗ、３Ｂとして透明な絶縁液体７とともにカプセル８内に封止した、セルを形成する隔壁４を設けない構成の帯電粒子液体中移動方式（電気泳動方式）の情報表示用パネルとすることもできる。 In the above-described example, the example of the information display panel of the charged particle gas moving type in which the cell space is filled with gas (for example, air) has been described. However, instead of moving in vacuum and gas, an insulating liquid is used. It is also possible to provide an information display panel of a moving type (electrophoresis type) in charged particle liquid. In this case, as shown in FIGS. 3A and 3B, a cell is formed in which particles containing charged particles are sealed in a capsule 8 together with a transparent insulating liquid 7 as display media 3W and 3B. An information display panel of a moving method (electrophoresis method) in a charged particle liquid configuration in which the partition walls 4 are not provided may be used.
＜本発明の情報表示用パネルの有色層について＞
　図４は本発明の情報表示用パネルの一例を説明するための図である。図４に示す例の対象となる情報表示用パネルは、図１（ａ）、（ｂ）に示す各電極が互いに交差するストライプ電極から構成されるパッシブマトリックス駆動方式の情報表示用パネルである。図４に示す例において、２は観察側パネル基板の情報表示画面領域にあたる透明部分、６は観察側パネル基板２上に形成された酸化インジウム錫（ＩＴＯ）からなる透明なストライプ電極、４はセル２１を形成するとともにパネル基板間ギャップを確保するための透明隔壁、１は背面側パネル基板の情報表示画面領域にあたる透明部分、５は背面側パネル基板１上に形成された透明ストライプ電極、９は背面側パネル基板１と透明隔壁４とを接合するための透明接着剤、３Ｂはセル２１内に封入された帯電性黒色粒子３Ｂａを含んだ粒子群として構成した黒色表示媒体、３Ｗはセル２１内に封入された帯電性白色粒子３Ｗａを含んだ粒子群として構成した白色表示媒体である。 <About the colored layer of the information display panel of the present invention>
FIG. 4 is a view for explaining an example of the information display panel of the present invention. The information display panel which is the target of the example shown in FIG. 4 is a passive matrix drive type information display panel composed of stripe electrodes in which the electrodes shown in FIGS. In the example shown in FIG. 4, 2 is a transparent portion corresponding to the information display screen area of the observation side panel substrate, 6 is a transparent stripe electrode made of indium tin oxide (ITO) formed on the observation side panel substrate 2, and 4 is a cell. 21 is a transparent partition wall for securing a gap between the panel substrates, 1 is a transparent portion corresponding to the information display screen area of the rear panel substrate, 5 is a transparent stripe electrode formed on the rear panel substrate 1, and 9 is A transparent adhesive for bonding the back side panel substrate 1 and the transparent partition wall 4, 3B is a black display medium configured as a particle group including the charged black particles 3Ba enclosed in the cell 21, and 3W is in the cell 21 3 is a white display medium configured as a particle group including the charged white particles 3Wa encapsulated in.
　図４に本発明の情報表示用パネルの一例として示す、対向ストライプ電極が交差して形成する電極対を画素とするパッシブマトリックス駆動型情報表示用パネルの特徴は、少なくとも情報表示画面領域にあたる観察側パネル基板部分２および背面側パネル基板部分１を透明にし、少なくとも情報表示画面領域にある隔壁４を透明にし、少なくとも情報表示画面領域にあたる観察側パネル基板部分２および背面側パネル基板部分１に形成するストライプ電極を透明にするとともに、ブラックマトリックスまたはホワイトマトリックスとして機能する有色層３１を背面側パネル基板の少なくとも情報表示画面領域１にあたる部分の外側に形成する点にある。また、図４に示した構成のうち、ストライプ電極６を共通電極６に変更し、ストライプ電極５をＴＦＴ付き画素電極５に変更した構成にすれば、本発明の情報表示用パネルの別の一例であるアクティブマトリックス駆動型情報表示用パネルとなる。このアクティブマトリックス駆動型情報表示用パネルの特徴は、少なくとも情報表示画面領域にあたる観察側パネル基板部分２および背面側パネル基板部分１を透明にし、少なくとも情報表示画面領域にある隔壁４を透明にし、少なくとも情報表示画面領域にあたる観察側パネル基板部分２に形成する共通電極を透明にするとともに、ブラックマトリックスまたはホワイトマトリックスとして機能する有色層３１を背面側パネル基板の少なくとも情報表示画面領域１にあたる部分の外側に形成する点である。 FIG. 4 shows an example of the information display panel according to the present invention. The passive matrix drive type information display panel having an electrode pair formed by intersecting opposing stripe electrodes as a pixel is characterized by at least the observation side corresponding to the information display screen region. The panel substrate portion 2 and the back side panel substrate portion 1 are made transparent, at least the partition walls 4 in the information display screen region are made transparent, and are formed on at least the observation side panel substrate portion 2 and the back side panel substrate portion 1 corresponding to the information display screen region. The stripe electrode is made transparent, and the colored layer 31 functioning as a black matrix or a white matrix is formed at least outside the portion corresponding to the information display screen region 1 of the rear panel substrate. Further, in the configuration shown in FIG. 4, when the stripe electrode 6 is changed to the common electrode 6 and the stripe electrode 5 is changed to the pixel electrode 5 with TFT, another example of the information display panel of the present invention. This is an active matrix drive type information display panel. The active matrix drive type information display panel is characterized in that at least the observation side panel substrate portion 2 and the back side panel substrate portion 1 corresponding to the information display screen region are transparent, at least the partition wall 4 in the information display screen region is transparent, The common electrode formed on the observation-side panel substrate portion 2 corresponding to the information display screen region is made transparent, and the colored layer 31 functioning as a black matrix or white matrix is provided outside at least the portion corresponding to the information display screen region 1 of the back-side panel substrate. It is a point to form.
　図４を用いて説明した前記本発明の情報表示用パネルによれば、観察側パネル基板２の内側にブラックマトリックスまたはホワイトマトリックスを設けない構成であるため、ブラックマトリックスまたはホワイトマトリックスを形成する際に発生しやすい残渣があったとしてもパネル基板間にその残渣が残ることがない。そのため、残渣に起因する基板間のリークをなくし、黒反射率を上げてしまうことを抑制し、あるいは、白反射率が低下することを抑制して、良好なコントラストが得られるようになる。また、少なくとも情報表示画面領域にあたる観察側パネル基板部分２および背面側パネル基板部分１を透明にし、少なくとも情報表示画面領域にある隔壁４を透明にしてマトリックス配置し、少なくとも情報表示画面領域にあたる観察側パネル基板部分２に形成する電極を透明にし、さらに本例では、背面側パネル基板１と透明な隔壁４とを接合するための接着剤９も透明にしているので、観察側から情報表示用パネルを見ると、観察側パネル基板の隔壁４に対応する部分には背面側パネル基板の情報表示画面領域１にあたる部分の外側に形成した有色層３１がマトリックス状に見えることとなり、従来のブラックマトリックスまたはホワイトマトリックスと同じ効果を得ることができる。 According to the information display panel of the present invention described with reference to FIG. 4, since the black matrix or the white matrix is not provided inside the observation side panel substrate 2, the black matrix or the white matrix is formed. Even if there is a residue that tends to occur, the residue does not remain between the panel substrates. Therefore, the leakage between the substrates due to the residue is eliminated, and the increase in black reflectance is suppressed, or the decrease in white reflectance is suppressed, and a good contrast can be obtained. Further, at least the observation-side panel substrate portion 2 and the back-side panel substrate portion 1 corresponding to the information display screen region are made transparent, and at least the partition walls 4 in the information display screen region are made transparent and arranged in a matrix, and at least the observation side corresponding to the information display screen region Since the electrode formed on the panel substrate portion 2 is transparent, and in this example, the adhesive 9 for bonding the back side panel substrate 1 and the transparent partition wall 4 is also transparent, the information display panel from the observation side , The colored layer 31 formed outside the portion corresponding to the information display screen region 1 of the back side panel substrate looks like a matrix at the portion corresponding to the partition wall 4 of the observation side panel substrate. The same effect as a white matrix can be obtained.
　本発明の情報表示用パネルにおいて、有色層３１は、背面側のパネル基板１の外表面全面に形成されていても良いし、背面側パネル基板１の外側の情報表示画面領域にあたる領域に形成されても良いし、あるいは、背面側のパネル基板１の情報表示画面領域にあたる領域にある透明な隔壁４が形成された箇所の裏側のみに形成されていても良い。有色層３１を背面側のパネル基板１の外側に設けるので、印刷法や予め有色層が形成されたシートを貼り合わせる方法で、有色層３１を簡単に設けることができる。有色層３１を背面側のパネル基板１の外表面全面に配置しない構成を採用すれば、有色層３１を形成する材料の使用量を少なくすることができ、材料費を安価にすることができる。また、いずれの場合も、同一の構成の情報表示用パネルに対し形成する有色層の色を変えることで、客先の要望に個別に対応することができるため、最初から客先の要望に応じて情報表示用パネルを形成する場合と比べて、製造単価を安価にすることができる。 In the information display panel of the present invention, the colored layer 31 may be formed on the entire outer surface of the rear panel substrate 1 or in an area corresponding to the information display screen region on the outer side of the rear panel substrate 1. Alternatively, it may be formed only on the back side of the portion where the transparent partition wall 4 in the area corresponding to the information display screen area of the panel substrate 1 on the back side is formed. Since the colored layer 31 is provided outside the panel substrate 1 on the back side, the colored layer 31 can be easily provided by a printing method or a method in which a sheet on which a colored layer has been previously formed is bonded. If a configuration in which the colored layer 31 is not disposed on the entire outer surface of the panel substrate 1 on the back side is employed, the amount of material used to form the colored layer 31 can be reduced, and the material cost can be reduced. Also, in any case, by changing the color of the colored layer formed on the information display panel of the same configuration, it is possible to individually respond to the customer's request. Compared with the case of forming an information display panel, the manufacturing unit price can be reduced.
　また、透明な隔壁４に対応した位置に、自由に位置を決めてブラックマトリックスやホワイトマトリックスを配置できるので、ブラックマトリックスやホワイトマトリックスを各画素の周囲すべてに配置したり、複数の画素毎の周囲に配置したり、ブラックマトリックスの幅やホワイトマトリックスの幅を調整したりすることによって、ブラックマトリックス効果やホワイトマトリックス効果を容易に調整するこができる。このマトリックス状の有色層は背面側パネル基板の外側面にフォトリソグラフィーや印刷法で直接形成することもできるが、パネル基板とは別体であるシートにフォトリソグラフィーや印刷法で形成し、そのシートを背面側パネル基板の外側面に貼り合わせて形成することもできる。 In addition, the black matrix and white matrix can be arranged freely at the position corresponding to the transparent partition wall 4, so that the black matrix and white matrix can be arranged all around each pixel, or around each pixel. It is possible to easily adjust the black matrix effect and the white matrix effect by arranging them at the same position or adjusting the width of the black matrix or the width of the white matrix. This matrix-like colored layer can be directly formed on the outer surface of the back panel substrate by photolithography or printing, but it is formed on a sheet separate from the panel substrate by photolithography or printing, and the sheet Can be bonded to the outer surface of the rear panel substrate.
　本発明の情報表示用パネルにおいて、有色層３１の色は特に限定されないが、白色又は黒色であることが好ましい。有色層３１を白色とした場合は、従来のホワイトマトリックス層を使用した例と同じ効果が得られ、有色層３１を黒色とした場合は、従来のブラックマトリックス層を使用した例と同じ効果が得られる。いずれの場合もコントラストを向上でき画像視認性を良好にすることができる。他の例えば青色、緑色等を使用することもでき、その場合は、全体の表示を若干青色、緑色とすることができ、黒板のような表示をすることができる。 In the information display panel of the present invention, the color of the colored layer 31 is not particularly limited, but is preferably white or black. When the colored layer 31 is white, the same effect as the example using the conventional white matrix layer is obtained, and when the colored layer 31 is black, the same effect as the example using the conventional black matrix layer is obtained. It is done. In either case, contrast can be improved and image visibility can be improved. Other colors such as blue and green can also be used. In that case, the entire display can be slightly blue and green, and a blackboard-like display can be obtained.
　本発明の情報表示用パネルにおいて、有色層３１を背面側パネル基板１の外側表面に形成する方法は特に限定されないが、有色層３１を塗布または貼付して形成することが好ましく、一例として、スクリーン印刷法を好適に用いることができる。また、本発明の情報表示用パネルでは、有色層３１を背面側パネル基板の外側に形成するので、パネルを組み立てた後、即ち、情報表示用パネル前駆体の背面側パネル基板の外側に後から任意の色の有色層３１を容易に設けることが出来る。さらに、本発明の情報表示用パネルでは、図５に示すように、従来の情報表示用パネルでは表示媒体を構成する粒子の配置密度が低い場合など、背面側に配置された部材色の影響を受けて視認性の低下を引き起こしていた点を、情報表示画面領域にあたる透明な背面側パネル基板部分１の外側表面全域に有色層３１を設けることで、背面側から受ける画像の映り込みの影響を制御したり、抑制したりして、視認性を向上させることができる。さらにまた、本発明の情報表示用パネルでは、有色層３１を背面側のパネル基板１の外側表面に形成するだけの単純な構造のため、図６に示すように１枚のシート４１で１５枚のパネル４４を得るいわゆる多個取りの場合でも、シート４１をスクライブする際のアライメントマーク４２やシート４１のロットナンバー（Ｌｏｔ．Ｎｏ．）の印字４３などに影響を及ぼさずに、パネルにのみ有色層３１を設けることが容易である。 In the information display panel of the present invention, the method for forming the colored layer 31 on the outer surface of the back panel substrate 1 is not particularly limited, but it is preferably formed by applying or pasting the colored layer 31, as an example. A printing method can be suitably used. In the information display panel according to the present invention, the colored layer 31 is formed outside the back panel substrate. Therefore, after the panel is assembled, that is, after the outside of the back panel substrate of the information display panel precursor. The colored layer 31 of any color can be easily provided. Furthermore, in the information display panel according to the present invention, as shown in FIG. 5, the conventional information display panel is affected by the color of the member arranged on the back side when the arrangement density of particles constituting the display medium is low. By providing the colored layer 31 over the entire outer surface of the transparent back side panel substrate portion 1 corresponding to the information display screen area, the influence of the reflection of the image received from the back side is caused. Visibility can be improved by controlling or suppressing. Furthermore, the information display panel of the present invention has a simple structure in which the colored layer 31 is simply formed on the outer surface of the panel substrate 1 on the back side, so that 15 sheets are formed with one sheet 41 as shown in FIG. Even in the case of so-called multi-pieces obtaining the panel 44, the alignment mark 42 when the sheet 41 is scribed, the lot number (Lot. No.) print 43 of the sheet 41, etc. are not affected, and only the panel is colored. It is easy to provide the layer 31.
　図７（ａ）、（ｂ）および図８（ａ）、（ｂ）はそれぞれ本発明の情報表示用パネルにおける観察側から見た有色層の状態の一例を説明するための図である。図７（ａ）は図１（ａ）、（ｂ）に示す例と同様にストライプ電極５、６を用いたパネルを基本構成とし、図７（ｂ）は図２（ａ）、（ｂ）に示す例と同様にＴＦＴ基板１を用いて共通電極６と画素電極５とをパネルを基本構成とし、いずれの例においても、背面側パネル基板１の透明な情報表示画面領域部分の外側に黒色の有色層３１を形成している。また、図８（ａ）は図３（ａ）、（ｂ）に示す例と同様に透明絶縁液体７とマイクロカプセル８とを用いたパネルを基本構成とし、図８（ｂ）は図１（ａ）、（ｂ）に示す透明なストライプ電極５、６を用いるとともに各画素毎に赤色カラーフィルター１１Ｒ、緑色カラーフィルター１１Ｇ、青色カラーフィルター１１ＢＬを設けて１表示単位を形成したカラー表示可能なパネルを基本構成とし、いずれの例においても、背面側パネル基板１の透明な情報表示画面領域部分の外側に黒色の有色層３１を形成している。図７（ａ）、（ｂ）および図８（ａ）、（ｂ）に示す例において、観察側から情報表示用パネルを見た状態は、隔壁４の位置が黒色に観察され、従来のブラックマトリックスと同等の効果があることがわかる。ここでは接着剤９に透明なものを用いたが、黒色の接着剤を用いてもよい。 7 (a), 7 (b), 8 (a), and 8 (b) are diagrams for explaining an example of the state of the colored layer viewed from the observation side in the information display panel of the present invention. 7A has a basic configuration of a panel using stripe electrodes 5 and 6 as in the example shown in FIGS. 1A and 1B, and FIG. 7B shows the configuration shown in FIGS. In the same way as in the example shown in FIG. 2, the TFT substrate 1 is used to form the common electrode 6 and the pixel electrode 5 as a basic configuration, and in each example, the back side panel substrate 1 has a black color outside the transparent information display screen area. The colored layer 31 is formed. FIG. 8A shows a basic configuration of a panel using the transparent insulating liquid 7 and the microcapsules 8 as in the example shown in FIGS. 3A and 3B. FIG. A panel capable of color display in which transparent stripe electrodes 5 and 6 shown in a) and (b) are used and a red color filter 11R, a green color filter 11G and a blue color filter 11BL are provided for each pixel to form one display unit. In any example, the black colored layer 31 is formed outside the transparent information display screen region portion of the back side panel substrate 1. In the example shown in FIGS. 7A, 7B, 8A, and 8B, when the information display panel is viewed from the observation side, the position of the partition wall 4 is observed in black, and the conventional black It turns out that there exists an effect equivalent to a matrix. Here, a transparent adhesive 9 is used, but a black adhesive may be used.
　図９（ａ）、（ｂ）および図１０（ａ）、（ｂ）はそれぞれ本発明の情報表示用パネルにおける観察側から見た有色層の状態のさらに他の例を説明するための図である。図９（ａ）、図１０（ａ）はそれぞれ観察側から見た有色層の状態を示し、図９（ｂ）、図１０（ｂ）はそれぞれ図９（ａ）、図１０（ａ）の部分断面を示している。 FIGS. 9A, 9B, 10A, and 10B are diagrams for explaining still another example of the state of the colored layer viewed from the observation side in the information display panel of the present invention. is there. FIGS. 9 (a) and 10 (a) show the state of the colored layer as viewed from the observation side, and FIGS. 9 (b) and 10 (b) show the states of FIGS. 9 (a) and 10 (a), respectively. A partial cross-section is shown.
　図９（ａ）、（ｂ）は、図７（ａ）に示す例と同様に透明なストライプ電極５、６を用いたパネルを基本構成としているが、透明な隔壁４により形成されたセル２１に対応して、それぞれ２本の透明なストライプ電極５、６を交差して設け、電極交差部分が形成するマトリックス配置された画素４個を２×２の配置で形成している。また、背面側パネル基板１の外側の情報表示画面領域全体に有色層３１を形成している。図１０（ａ）、（ｂ）は、図９（ａ）、（ｂ）に示す例と同様に、透明な隔壁４により形成されたセル２１に対応して、それぞれ２本の透明なストライプ電極５、６を交差して設け、電極交差部分が形成するマトリックス配置された画素４個を２×２の配置で形成するとともに、４個の画素に対応して、観察側パネル基板２の内側に平坦化層１２とともに、赤色カラーフィルター１１Ｒ、緑色カラーフィルター１１Ｇ、青色カラーフィルター１１ＢＬ、無色透明カラーフィルター１１Ｔを形成している。 9 (a) and 9 (b) are basically composed of a panel using transparent stripe electrodes 5 and 6 as in the example shown in FIG. 7 (a), but a cell 21 formed by transparent partition walls 4 is used. Corresponding to the above, two transparent stripe electrodes 5 and 6 are provided so as to cross each other, and four pixels arranged in a matrix formed by the electrode crossing portions are formed in a 2 × 2 arrangement. In addition, a colored layer 31 is formed on the entire information display screen area outside the back side panel substrate 1. 10 (a) and 10 (b), like the example shown in FIGS. 9 (a) and 9 (b), each of the two transparent stripe electrodes corresponds to the cell 21 formed by the transparent partition wall 4. 5 and 6 are provided so as to cross each other, and four pixels arranged in a matrix formed by the electrode crossing portion are formed in a 2 × 2 arrangement, and corresponding to the four pixels, on the inside of the observation side panel substrate 2 Together with the flattening layer 12, a red color filter 11R, a green color filter 11G, a blue color filter 11BL, and a colorless and transparent color filter 11T are formed.
　なお、図１１に一例を示す、隔壁で囲まれた基板間のセル空間に正帯電性黒色粒子群および負帯電性白色粒子群を表示媒体として封入したドットマトリックス型パッシブ駆動パネルの例では、図１２（ａ）に示すように少なくとも情報表示画面領域部分が透明な背面側パネル基板の外側全面に有色層を配置した例の他に、図１２（ｂ）に示すように少なくとも情報表示画面領域部分が透明な背面側パネル基板の背面側ストライプ電極と観察側ストライプ電極とが交差する情報表示画面領域の全面に有色層を配置した例、図１２（ｃ）に示すように少なくとも情報表示画面領域部分が透明な背面側パネル基板の情報表示画面領域内の隔壁対応位置に有色層を格子状に配置した例、図１２（ｄ）に示すように少なくとも情報表示画面領域部分が透明な背面側パネル基板の情報表示画面領域全面に黒色層と白色層とを分離して配置した例（ブラックマトリックス画面とホワイトマトリックス画面とを１画面内で得られる例）、図１２（ｅ）に示すように少なくとも情報表示画面領域部分が透明な背面側パネル基板の情報表示画面領域内の隔壁対応位置に黒色層を格子状に配置した上に白色層を背面側パネル基板全面に配置した例、などを採ることができる。 FIG. 11 shows an example of a dot matrix type passive drive panel in which a positively charged black particle group and a negatively charged white particle group are enclosed as a display medium in a cell space between substrates surrounded by partitions. 12 (a), at least the information display screen area portion, as shown in FIG. 12 (b), in addition to the example in which the colored layer is disposed on the entire outer surface of the back side panel substrate where at least the information display screen area portion is transparent. An example in which a colored layer is arranged on the entire surface of the information display screen region where the back side stripe electrode and the observation side stripe electrode of the back side panel substrate having a transparent surface intersect, as shown in FIG. 12C, at least the information display screen region part An example in which colored layers are arranged in a grid pattern at positions corresponding to partition walls in the information display screen area of the back side panel substrate with transparent, as shown in FIG. An example in which a black layer and a white layer are separated and arranged on the entire information display screen area of a bright back panel substrate (an example in which a black matrix screen and a white matrix screen are obtained in one screen), FIG. An example in which a black layer is arranged in a lattice shape at a position corresponding to a partition in the information display screen area of the back side panel substrate where at least the information display screen region portion is transparent as shown in FIG. , Etc.
　また、図１３に一例を示す、隔壁で囲まれた基板間のセル空間に正帯電性黒色粒子群および負帯電性白色粒子群を表示媒体として封入したドットマトリックス型アクティブ駆動パネルの例では、図１４（ａ）に示すように少なくとも情報表示画面領域部分が透明な背面側パネル基板の外側全面に有色層を配置した例の他に、図１４（ｂ）に示すように少なくとも情報表示画面領域部分が透明な背面側パネル基板の情報表示画面領域全面に有色層を配置した例、図１４（ｃ）に示すように少なくとも情報表示画面領域部分が透明な背面側パネル基板の情報表示画面領域内の隔壁対応位置に有色層を格子状に配置した例、図１４（ｄ）に示すように少なくとも情報表示画面領域部分が透明な背面側パネル基板の情報表示画面領域全面に黒色層と白色層とを分離して配置した例（ブラックマトリックス画面とホワイトマトリックス画面とを１画面内で得られる例）、などを採ることができる。 FIG. 13 shows an example of a dot matrix type active drive panel in which a positively charged black particle group and a negatively charged white particle group are enclosed as a display medium in a cell space between substrates surrounded by a partition wall. 14 (a), at least the information display screen area portion, as shown in FIG. 14 (b), in addition to the example in which the colored layer is disposed on the entire outer surface of the rear panel substrate where at least the information display screen area portion is transparent. An example in which a colored layer is disposed on the entire information display screen area of the back side panel substrate having a transparent surface, as shown in FIG. 14C, at least the information display screen area portion in the information display screen area of the back side panel substrate having a transparent color An example in which the colored layers are arranged in a grid pattern at the partition corresponding positions, as shown in FIG. 14D, a black layer is formed on the entire information display screen area of the back side panel substrate where at least the information display screen area portion is transparent. Example in which by separating the color layer (eg obtained a black matrix screen and a white matrix screen one screen), it may take the like.
＜本発明の情報表示用パネルの散乱層について＞
　図１５は本発明の情報表示用パネルにおける散乱層の一例について説明するための図である。図１５において、上述した図１～図１４に示した部材と同一の部材には同一の符号を付し、その説明を省略する。 <About the scattering layer of the information display panel of the present invention>
FIG. 15 is a view for explaining an example of the scattering layer in the information display panel of the present invention. In FIG. 15, the same members as those shown in FIGS. 1 to 14 described above are denoted by the same reference numerals, and the description thereof is omitted.
　図１５に示す例において、散乱層４５は、観察側パネル基板２の外側に形成されている。観察側パネル基板２の外側とは、背面側パネル基板１側とは反対側をいう。すなわち、観察側パネル基板２の観察者に近い側である。情報表示画面領域では、散乱層４５は、観察側パネル基板２上に形成されている。散乱層４５は、光を散乱する。散乱層４５は、光を散乱すれば、散乱方法は問わない。例えば、散乱層４５の表面に凹凸を有することにより、光を散乱しても良い。散乱層４５は、観察者側の表面に凹凸を有する。散乱層４５は、散乱層４５の屈折率と異なる屈折率を持つ粒子を散乱層４５内部に含むことにより、光を散乱しても良い。散乱層４５と粒子との屈折率との差による内部散乱により光が散乱される。両方の方法を組み合わせても良いし、別の方法により、散乱層を形成しても良い。 15, the scattering layer 45 is formed outside the observation side panel substrate 2. The outside of the observation side panel substrate 2 refers to the side opposite to the back side panel substrate 1 side. That is, it is a side close to the observer of the observation side panel substrate 2. In the information display screen region, the scattering layer 45 is formed on the observation side panel substrate 2. The scattering layer 45 scatters light. The scattering layer 45 does not ask | require a scattering method if it scatters light. For example, light may be scattered by having irregularities on the surface of the scattering layer 45. The scattering layer 45 has irregularities on the surface on the viewer side. The scattering layer 45 may scatter light by including particles having a refractive index different from the refractive index of the scattering layer 45 inside the scattering layer 45. Light is scattered by internal scattering due to the difference between the refractive index of the scattering layer 45 and the particles. Both methods may be combined, or the scattering layer may be formed by another method.
　また、散乱層４５を観察側パネル基板２上に形成する。具体的には、散乱層４５は、観察側パネル基板２の外側表面上に形成される。散乱層４５は、例えば、ＡＧ（Anti-Glare）フィルムを貼り付けることによって、形成される。ＡＧフィルムは、市販されているものが用いられる。散乱層４５は、観察側パネル基板２と背面側パネル基板１とを貼り合わせる前に形成しても良い。 Further, the scattering layer 45 is formed on the observation side panel substrate 2. Specifically, the scattering layer 45 is formed on the outer surface of the observation side panel substrate 2. The scattering layer 45 is formed by attaching, for example, an AG (Anti-Glare) film. A commercially available AG film is used. The scattering layer 45 may be formed before the observation side panel substrate 2 and the back side panel substrate 1 are bonded together.
　本発明の情報表示用パネルにおいて、観察側パネル基板２の外側には、光を散乱する散乱層４５が形成されている。観察側パネル基板２と背面側パネル基板１をつなぐために隔壁４上に形成される接着層９にムラが生じることがある。また、接着層９に気泡が入り込むこともある。散乱層４５が形成されていない場合には、隔壁４を透明にしたことによって、このような接着層９のムラや気泡が観察者に視認される。観察側パネル基板２の外側に散乱層４５を形成することによって、接着層９からの光は、散乱される。このため、観察者には、接着層９のムラが明瞭に観察されることはなくなる。従って、隔壁４を透明にしても、表示品質を維持できる。 In the information display panel of the present invention, a scattering layer 45 that scatters light is formed outside the observation-side panel substrate 2. Unevenness may occur in the adhesive layer 9 formed on the partition wall 4 to connect the observation side panel substrate 2 and the back side panel substrate 1. In addition, bubbles may enter the adhesive layer 9. When the scattering layer 45 is not formed, such irregularities and bubbles in the adhesive layer 9 are visually recognized by the observer by making the partition wall 4 transparent. By forming the scattering layer 45 outside the observation side panel substrate 2, the light from the adhesive layer 9 is scattered. For this reason, the observer does not clearly observe the unevenness of the adhesive layer 9. Therefore, even if the partition 4 is transparent, display quality can be maintained.
　さらに、散乱層４５を形成することによって、太陽光や室内照明からの反射光が散乱される。すなわち、太陽光や室内照明からの正反射光強度が低下する。このため、太陽や室内照明が画面に映り込むことを防止できる。これによって、観察者にとって、見やすい画面となり、画面視認性及び表示品質を向上できる。 Furthermore, by forming the scattering layer 45, reflected light from sunlight or indoor lighting is scattered. That is, the intensity of specular reflection light from sunlight or indoor lighting is reduced. For this reason, it is possible to prevent the sun and room lighting from being reflected on the screen. As a result, the screen is easy to see for the observer, and the screen visibility and display quality can be improved.
　観察側パネル基板２に破損しやすい材料（例えば、ガラス）を用いた場合、情報表示用パネルを使用中に観察側パネル基板２の破損が生じると、観察側パネル基板２の破片によって、観察者が怪我をするおそれがある。本発明の情報表示用パネルにおいて、観察側パネル基板２の外側に散乱層４５が形成されているため、散乱層４５が飛散防止フィルムとして機能する。このため、観察側パネル基板２の破片が観察者に飛散するのを抑制できるので、製品の安全性の向上も図られる。 When a material that is easily damaged (for example, glass) is used for the observation-side panel substrate 2, if the observation-side panel substrate 2 is damaged while the information display panel is in use, the observer will be broken by the fragments of the observation-side panel substrate 2. May be injured. In the information display panel of the present invention, since the scattering layer 45 is formed outside the observation side panel substrate 2, the scattering layer 45 functions as a scattering prevention film. For this reason, since it can suppress that the fragment of the observation side panel board | substrate 2 disperses to an observer, the improvement of the safety | security of a product is also aimed at.
＜本発明の情報表示用パネルを構成する各部材について＞
　以下、本発明の情報表示用パネルを構成する各部材について説明する。 <About each member which comprises the information display panel of this invention>
Hereinafter, each member which comprises the information display panel of this invention is demonstrated.
　パネル基板とする基板については、いずれも少なくとも情報表示画面領域とする領域が透明で情報表示用パネル外側から表示媒体の色が確認できる基板を、観察側パネル基板および背面側パネル基板とする。透明領域において可視光の透過率が高くかつパネル基板として耐熱性の良い材料が好適である。基板材料を例示すると、ポリエチレンテレフタレート、ポリエチレンナフタレート、ポリエーテルサルフォン、ポリエチレン、ポリカーボネート、ポリイミド、アクリルなどの高分子材料や、ガラス、石英、硬質プラスチックなどが挙げられる。基板の厚みは、２μｍ～５０００μｍが好ましく、さらに５μｍ～２０００μｍが好適であり、薄すぎると、強度、基板間の間隔均一性を保ちにくくなり、５０００μｍより厚いと、薄型情報表示用パネルとする場合に不都合がある。 Regarding the substrate used as the panel substrate, the substrate on which at least the information display area is transparent and the color of the display medium can be confirmed from the outside of the information display panel is referred to as an observation side panel substrate and a back side panel substrate. A material having high visible light transmittance in the transparent region and good heat resistance as the panel substrate is suitable. Examples of the substrate material include polymer materials such as polyethylene terephthalate, polyethylene naphthalate, polyethersulfone, polyethylene, polycarbonate, polyimide, and acrylic, glass, quartz, and hard plastic. The thickness of the substrate is preferably 2 μm to 5000 μm, more preferably 5 μm to 2000 μm. If it is too thin, it will be difficult to maintain the strength and uniformity of the distance between the substrates, and if it is thicker than 5000 μm, it will be a thin information display panel. Is inconvenient.
　電極形成材料としては、アルミニウム、銀、ニッケル、銅、金等の金属類や酸化インジウム錫（ＩＴＯ）、亜鉛ドープ酸化インジウム（ＩＺＯ）、アルミニウムドープ酸化亜鉛（ＡＺＯ）、酸化インジウム、導電性酸化錫、アンチモン錫酸化物（ＡＴＯ）、導電性酸化亜鉛等の導電金属酸化物類、ポリアニリン、ポリピロール、ポリチオフェンなどの導電性高分子類が例示され、情報表示画面領域に設けるストライプ電極や共通電極には、これらのうち透明なものを適宜選択して使用する。情報表示画面領域に設けるＴＦＴ付き画素電極は透明でなくてもよいので、いずれの材料も用いることができる。電極の形成方法としては、上記例示の材料をスパッタリング法、真空蒸着法、ＣＶＤ（化学蒸着）法、塗布法等で薄膜状に形成する方法や、金属箔（例えば、圧延銅箔などがある）をラミネートする方法、導電剤を溶媒や合成樹脂バインダーに混合して塗布したりする方法が用いられる。なお、電極厚みは、導電性が確保でき光透過性に支障がなければ良く、０．０１μｍ～１０μｍ、好ましくは０．０５μｍ～１０μｍで設けられる。 Electrode forming materials include metals such as aluminum, silver, nickel, copper, and gold, indium tin oxide (ITO), zinc-doped indium oxide (IZO), aluminum-doped zinc oxide (AZO), indium oxide, and conductive tin oxide. Examples include conductive metal oxides such as antimony tin oxide (ATO) and conductive zinc oxide, and conductive polymers such as polyaniline, polypyrrole, and polythiophene. The stripe electrode and common electrode provided in the information display screen region include Of these, a transparent one is appropriately selected and used. Since the TFT-attached pixel electrode provided in the information display screen region does not have to be transparent, any material can be used. As a method for forming the electrode, a method of forming the above-described materials into a thin film by sputtering, vacuum deposition, CVD (chemical vapor deposition), coating, or the like, or metal foil (for example, rolled copper foil) And a method in which a conductive agent is mixed with a solvent or a synthetic resin binder and applied. Note that the electrode thickness may be 0.01 μm to 10 μm, preferably 0.05 μm to 10 μm, as long as the electrode has sufficient conductivity and does not interfere with light transmission.
　隔壁については、情報表示画面領域にあたる領域に配置する基板間ギャップ確保用の隔壁は透明材料を用いて透明に形成する。この隔壁は基板間ギャップ確保用のみならず表示媒体を収納するセルを形成する役割も担っており、高さは所定の基板間ギャップと同じにするが、帯電性粒子を含んだ、平均粒子径が１μｍ～２０μｍの範囲にある粒子群を表示媒体とする情報表示用パネルでは、１０μｍ～５００μｍに、好ましくは１０μｍ～１００μｍに、さらに好ましくは１０μｍ～５０μｍに調整される。基板間ギャップ確保用の隔壁とは別に、専らセルを形成するために設ける隔壁は、基板間ギャップ確保用の隔壁よりも低くても構わないし透明とする必要もないが、情報表示画面領域において隔壁は非表示部分となるので、このセル形成専用の隔壁はできるだけ幅を細くするのが好ましい。基板間ギャップ確保用の隔壁の幅は１０μｍ～１００μｍが好ましいのに対して、セル形成専用の隔壁の幅は２μｍ～５０μｍが好ましい。これらの隔壁の高さや幅は、配置する電極の形状や配置により適宜設計されるが、セル形成専用の隔壁の幅は、基板間ギャップ確保用の隔壁の幅以下とするのが好ましい。情報表示画面領域外の領域にも基板間ギャップ確保用の隔壁を設けるが、この隔壁は透明である必要もないし、セルを形成する必要もない。 As for the partition, the partition for securing the inter-substrate gap arranged in the area corresponding to the information display screen area is formed transparently using a transparent material. This partition not only secures the gap between the substrates, but also forms a cell that accommodates the display medium. The height is the same as the predetermined gap between the substrates, but the average particle diameter including the chargeable particles. Is set to 10 μm to 500 μm, preferably 10 μm to 100 μm, and more preferably 10 μm to 50 μm in an information display panel using a particle group having a particle size in the range of 1 μm to 20 μm. Apart from the partition for securing the gap between the substrates, the partition provided exclusively for forming the cell may be lower than the partition for securing the gap between the substrates or need not be transparent, but the partition in the information display screen region Since this becomes a non-display portion, it is preferable to make the partition dedicated to cell formation as thin as possible. The width of the partition for securing the gap between the substrates is preferably 10 μm to 100 μm, while the width of the partition dedicated for cell formation is preferably 2 μm to 50 μm. The height and width of these partition walls are appropriately designed according to the shape and arrangement of the electrodes to be arranged, but the width of the partition walls dedicated to cell formation is preferably equal to or less than the width of the partition walls for securing the inter-substrate gap. A partition for securing a gap between the substrates is provided in a region outside the information display screen region, but the partition does not need to be transparent and does not need to form a cell.
　また、隔壁を形成するにあたり、対向する両基板の各々にリブを形成した後に接合する両リブ法、片側の基板上にのみリブを形成する片リブ法が考えられる。この発明では、いずれの方法も好適に用いられる。
　背面側パネル基板と観察側パネル基板との貼り合わせは、基板間ギャップ確保用の隔壁上面部と相手側パネル基板との間に接着剤を配置するか、双方のパネル基板に形成された基板間ギャップ確保用の隔壁上面部同士を対面させた間に接着剤を配置するかして行う。この接着剤は硬化後に透明となるものを用いるのが好ましいが、場合によっては他の有色にした接着剤を用いることもできる。透明接着剤としては、エポキシ系接着剤、アクリル系接着剤などが挙げられ、１μｍ～１０μｍ程度の厚さで配置して用いることができる。有色の接着剤とする場合は、前記透明接着材に所望の色の顔料を配合して用いることができる。情報表示画面領域外の領域において行う背面側パネル基板と観察側パネル基板との貼り合わせに用いる接着剤は透明である必要はない。
　これらのリブからなる隔壁により形成されるセルは、基板平面方向からみて四角形状、三角形状、円形状、六角形状、階段型八角形状、レーストラック形状などが例示される。このセルに対応する対応した位置にマトリックス配置された画素が入るようにする。観察側から見える隔壁断面部分に相当する部分（セルの枠部の面積）の幅を調整して、ブラックマトリックス効果やホワイトマトリックス効果を調整することができる。
　ここで、隔壁の形成方法を例示すると、金型転写法、スクリーン印刷法、サンドブラスト法、フォトリソ法、アディティブ法が挙げられる。いずれの方法もこの発明の情報表示用パネルに好適に用いることができるが、これらのうち、レジストフィルムを用いるフォトリソ法や金型転写法が好適に用いられる。 In forming the partition walls, a both-rib method in which ribs are formed on each of the opposing substrates and then bonded, and a one-rib method in which ribs are formed only on one substrate are conceivable. In the present invention, any method is preferably used.
Bonding between the rear panel substrate and the observation panel substrate is done by placing an adhesive between the upper surface of the partition wall for securing the inter-substrate gap and the counterpart panel substrate, or between the substrates formed on both panel substrates. This is done by placing an adhesive between the upper surfaces of the partition walls for securing the gap. This adhesive is preferably one that becomes transparent after curing, but in some cases, other colored adhesives can be used. Examples of the transparent adhesive include an epoxy adhesive and an acrylic adhesive, and the transparent adhesive can be used with a thickness of about 1 μm to 10 μm. When a colored adhesive is used, a pigment having a desired color can be blended with the transparent adhesive. The adhesive used for bonding the back-side panel substrate and the observation-side panel substrate in the area outside the information display screen area does not need to be transparent.
Examples of the cells formed by the partition walls made of these ribs include a quadrangular shape, a triangular shape, a circular shape, a hexagonal shape, a stepped octagonal shape, and a racetrack shape as viewed from the substrate plane direction. Pixels arranged in a matrix are placed at corresponding positions corresponding to the cells. The black matrix effect and the white matrix effect can be adjusted by adjusting the width of the portion (area of the cell frame portion) corresponding to the partition wall section visible from the observation side.
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 the information display panel of the present invention, and among these, a photolithography method using a resist film and a mold transfer method are suitably used.
　観察側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）と、背面側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）とを５０μｍ間隔に対向させた基板間空間に、平均粒子径が９．２μｍの負帯電性白色粒子を含んで構成した白色表示媒体と、平均粒子径が９．０μｍの正帯電性黒色粒子を含んで構成した黒色表示媒体とを配置した情報表示用パネルをベースに実施例の情報表示用パネルを作製した。 An observation side panel substrate (a glass substrate having a thickness of 700 μm with a stripe electrode obtained by patterning a 100 nm thick ITO film in a 300 μm width and 30 μm space) and a back side panel substrate (a 100 nm thick ITO film in a 300 μm width and 30 μm space) A white display medium configured by including negatively charged white particles having an average particle diameter of 9.2 μm in a space between substrates facing a 50 μm interval between a patterned glass substrate having a stripe electrode and a thickness of 700 μm; An information display panel according to the example was manufactured based on an information display panel on which a black display medium including positively chargeable black particles having an average particle diameter of 9.0 μm was disposed.
　実施例および比較例の隔壁の形成には、いずれもアルフォＮＩＴ２（ニチゴーモートン社製ドライフィルムレジスト材）を用いたフォトリソグラフィー技術を適用し、幅２０μｍ、高さ５０μｍの透明な隔壁とした。 In the formation of the partition walls in the examples and comparative examples, a photolithography technique using Alfo NIT2 (Nichigo Morton dry film resist material) was applied to form a transparent partition wall having a width of 20 μm and a height of 50 μm.
　比較例１の情報表示用パネルでは、観察側パネル基板のＩＴＯストライプ電極の上に黒色顔料が配合されたブラックマトリックス材層を製膜後、さらにその上に隔壁形成用の透明なドライフィルムレジスト、アルフォＮＩＴ２（ニチゴーモートン社製）を積層し、フォトリソグラフィーにより隔壁とパネル基板との間にブラックマトリックスが配置された観察側パネル基板を得た。比較例２の情報表示用パネルでは、観察側パネル基板のＩＴＯストライプ電極の上に白色顔料が配合されたホワイトマトリックス材層を製膜後、さらにその上に隔壁形成用の透明なドライフィルムレジスト、アルフォＮＩＴ２（ニチゴーモートン社製）を積層し、フォトリソグラフィーにより隔壁とパネル基板との間にホワイトマトリックスが配置された観察側パネル基板を得た。 In the information display panel of Comparative Example 1, after forming a black matrix material layer in which a black pigment was blended on the ITO stripe electrode of the observation side panel substrate, a transparent dry film resist for partition formation was further formed thereon, Alfo NIT2 (manufactured by Nichigo Morton) was laminated, and an observation side panel substrate in which a black matrix was arranged between the partition walls and the panel substrate was obtained by photolithography. In the information display panel of Comparative Example 2, after forming a white matrix material layer in which a white pigment is blended on the ITO stripe electrode of the observation side panel substrate, a transparent dry film resist for forming a partition is further formed thereon, Alfo NIT2 (manufactured by Nichigo Morton) was laminated, and an observation side panel substrate in which a white matrix was disposed between the partition walls and the panel substrate was obtained by photolithography.
　実施例１～５の情報表示用パネルでは、観察側パネル基板のＩＴＯストライプ電極の上に隔壁形成用の透明なドライフィルムレジスト、アルフォＮＩＴ２（ニチゴーモートン社製）を積層し、フォトリソグラフィーにより閣は基が配置された観察側パネル基板を得た。 In the information display panels of Examples 1 to 5, a transparent dry film resist for forming a partition, Alfo NIT2 (manufactured by Nichigo Morton), is laminated on the ITO stripe electrode of the observation side panel substrate. An observation side panel substrate on which a group was arranged was obtained.
＜実施例１＞
　背面側となるガラス基板のＩＴＯストライプ電極が形成されていない方の面上の情報表示画面領域にあたる領域に黒色顔料が配合されたブラックマトリックス材層を厚さ２０μｍに製膜して黒色層付きの背面側パネル基板とした後、所定の粒子群が表示媒体として配置された観察側となるガラス基板と貼り合わせて情報表示用パネルを得た。 <Example 1>
A black matrix material layer in which a black pigment is blended in a region corresponding to an information display screen region on the surface of the glass substrate on the back side where the ITO stripe electrode is not formed is formed to a thickness of 20 μm and has a black layer. After forming a back panel substrate, an information display panel was obtained by pasting together a glass substrate on the observation side on which a predetermined particle group was arranged as a display medium.
＜実施例２＞
　背面側となるガラス基板のＩＴＯストライプ電極が形成されていない方の面上の情報表示画面領域にあたる領域に黒色顔料を配合されたブラックマトリックス材層を厚さ２０μｍに製膜した後、フォトリソグラフィー技術を用いて隔壁に対応した格子状のブラックマトリックスを形成し、黒色層付きの背面側パネル基板とした。次に、所定の粒子群が表示媒体として配置された観察側となるガラス基板と貼り合わせて情報表示用パネルを得た。 <Example 2>
After forming a black matrix material layer containing a black pigment in a region corresponding to an information display screen region on the surface of the glass substrate on the back side where the ITO stripe electrode is not formed, a photolithography technique Was used to form a grid-like black matrix corresponding to the partition walls, and a back-side panel substrate with a black layer was obtained. Next, an information display panel was obtained by bonding to a glass substrate on the observation side on which a predetermined particle group was arranged as a display medium.
＜実施例３＞
　背面側となるガラス基板のＩＴＯストライプ電極が形成されていない方の面上の情報表示画面領域にあたる領域に黒色顔料が配合されたブラックマトリックス材層を厚さ５０μｍに製膜した後、フォトリソグラフィー技術を用いて隔壁に対応した格子状のブラックマトリックスを形成し、さらにその上に重ねて情報表示画面領域にあたる領域に白色顔料が配合されたホワイトマトリックス材層を厚さ２０μｍに製膜して有色層付きの背面側パネル基板とした。次に、所定の粒子群が表示媒体として配置された観察側となるガラス基板と貼り合わせて情報表示用パネルを得た。 <Example 3>
After forming a black matrix material layer with a thickness of 50 μm in a region corresponding to the information display screen region on the surface of the glass substrate on the back side where the ITO stripe electrode is not formed, a photolithography technique Is used to form a grid-like black matrix corresponding to the partition walls, and a white matrix material layer in which a white pigment is blended in an area corresponding to the information display screen area is formed to a thickness of 20 μm. It was set as the back side panel board | substrate with attached. Next, an information display panel was obtained by bonding to a glass substrate on the observation side on which a predetermined particle group was arranged as a display medium.
＜実施例４＞
　背面側となるガラス基板のＩＴＯストライプ電極が形成されていない方の面上の情報表示画面領域にあたる領域に水溶性黒色塗料「水性スーパーコート」（（株）アサヒペン製）をスクリーン印刷法で厚さ２０μｍに形成して黒色層付きの背面側パネル基板とした後、所定の粒子群が表示媒体として配置された観察側となるガラス基板と貼り合わせて情報表示用パネルを得た。 <Example 4>
Thickness of water-soluble black paint “Water Super Coat” (manufactured by Asahi Pen Co., Ltd.) by screen printing on the area corresponding to the information display screen area on the back side of the glass substrate where the ITO stripe electrode is not formed After forming a back side panel substrate with a black layer by forming it to 20 μm, an information display panel was obtained by pasting it together with a glass substrate on the observation side on which a predetermined particle group was arranged as a display medium.
＜実施例５＞
　前記した観察側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）と、背面側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）とを、透明な隔壁によって５０μｍ間隔に対向させた基板間空間に、平均粒子径が９．２μｍの負帯電性白色粒子を含んで構成した白色表示媒体と、平均粒子径が９．０μｍの正帯電性黒色粒子を含んで構成した黒色表示媒体とを配置した情報表示用パネル前駆体を作製後、その情報表示用パネル前駆体の背面側ガラス基板の外側面全面に、水溶性黒色塗料「水性スーパーコート」（（株）アサヒペン製）をスクリーン印刷法で厚さ２０μｍに形成して黒色層付きの情報表示用パネルを得た。 <Example 5>
The above-mentioned observation side panel substrate (a glass substrate having a thickness of 700 μm with a stripe electrode obtained by patterning an ITO film having a thickness of 100 nm with a width of 30 μm and a thickness of 30 μm) and a back side panel substrate (an ITO film having a thickness of 100 nm having a width of 300 μm and a thickness of 30 μm). A glass substrate having a stripe electrode patterned with a space and having a thickness of 700 μm) and a space between the substrates facing each other by a transparent partition wall at an interval of 50 μm includes negatively charged white particles having an average particle diameter of 9.2 μm. After producing the information display panel precursor in which the configured white display medium and the black display medium configured to include positively charged black particles having an average particle size of 9.0 μm are prepared, the information display panel precursor Screen printing of water-soluble black paint “Water-based Supercoat” (manufactured by Asahi Pen Co., Ltd.) on the entire outer surface of the rear glass substrate. In to a thickness 20μm was obtained information display panel with the black layer.
＜実施例６＞
　前記した観察側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）と、背面側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）とを、透明な隔壁によって５０μｍ間隔に対向させた基板間空間に、平均粒子径が９．２μｍの負帯電性白色粒子を含んで構成した白色表示媒体と、平均粒子径が９．０μｍの正帯電性黒色粒子を含んで構成した黒色表示媒体とを配置した情報表示用パネル前駆体を作製後、その情報表示用パネル前駆体の背面側ガラス基板の外側面全面に、水溶性白色塗料「水性スーパーコート」（（株）アサヒペン製）をスクリーン印刷法で厚さ２０μｍに形成して白色層付きの情報表示用パネルを得た。 <Example 6>
The above-mentioned observation side panel substrate (a glass substrate having a thickness of 700 μm with a stripe electrode obtained by patterning an ITO film having a thickness of 100 nm with a width of 30 μm and a thickness of 30 μm) and a back side panel substrate (an ITO film having a thickness of 100 nm having a width of 300 μm and a thickness of 30 μm). A glass substrate having a stripe electrode patterned with a space and having a thickness of 700 μm) and a space between the substrates facing each other by a transparent partition wall at an interval of 50 μm includes negatively charged white particles having an average particle diameter of 9.2 μm. After producing the information display panel precursor in which the configured white display medium and the black display medium configured to include positively charged black particles having an average particle size of 9.0 μm are prepared, the information display panel precursor Screen-printed water-soluble white paint “Water-based Supercoat” (manufactured by Asahi Pen Co., Ltd.) on the entire outer surface of the rear glass substrate In to a thickness 20μm was obtained information display panel with white layer.
＜実施例７＞
　前記した観察側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）と、背面側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）とを、透明な隔壁によって５０μｍ間隔に対向させた基板間空間に、平均粒子径が９．２μｍの負帯電性白色粒子を含んで構成した白色表示媒体と、平均粒子径が９．０μｍの正帯電性黒色粒子を含んで構成した黒色表示媒体とを配置した情報表示用パネル前駆体を作製後、その情報表示用パネル前駆体の背面側ガラス基板の外側面全面に、アクリル系粘着剤付きのポリエチレンテレフタレート（ＰＥＴ）製黒色フィルム（厚さ５０μｍ）を貼り合わせて黒色層付きの情報表示用パネルを得た。 <Example 7>
The above-mentioned observation side panel substrate (a glass substrate having a thickness of 700 μm with a stripe electrode obtained by patterning an ITO film having a thickness of 100 nm with a width of 30 μm and a thickness of 30 μm) and a back side panel substrate (an ITO film having a thickness of 100 nm having a width of 300 μm and a thickness of 30 μm). A glass substrate having a stripe electrode patterned with a space and having a thickness of 700 μm) and a space between the substrates facing each other by a transparent partition wall at an interval of 50 μm includes negatively charged white particles having an average particle diameter of 9.2 μm. After producing the information display panel precursor in which the configured white display medium and the black display medium configured to include positively charged black particles having an average particle size of 9.0 μm are prepared, the information display panel precursor Black film made of polyethylene terephthalate (PET) with acrylic adhesive on the entire outer surface of the back glass substrate ( To obtain an information display panel with the black layer by bonding the 50 [mu] m).
＜実施例８＞
　前記した観察側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）と、背面側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）とを、透明な隔壁によって５０μｍ間隔に対向させた基板間空間に、平均粒子径が９．２μｍの負帯電性白色粒子を含んで構成した白色表示媒体と、平均粒子径が９．０μｍの正帯電性黒色粒子を含んで構成した黒色表示媒体とを配置した情報表示用パネル前駆体を作製後、その情報表示用パネル前駆体の背面側ガラス基板の外側面全面に、アクリル系粘着剤付きのポリエチレンテレフタレート（ＰＥＴ）製白色フィルム（厚さ５０μｍ）を貼り合わせて白色層付きの情報表示用パネルを得た。 <Example 8>
The above-mentioned observation side panel substrate (a glass substrate having a thickness of 700 μm with a stripe electrode obtained by patterning an ITO film having a thickness of 100 nm with a width of 30 μm and a thickness of 30 μm) and a back side panel substrate (an ITO film having a thickness of 100 nm having a width of 300 μm and a thickness of 30 μm). A glass substrate having a stripe electrode patterned with a space and having a thickness of 700 μm) and a space between the substrates facing each other by a transparent partition wall at an interval of 50 μm includes negatively charged white particles having an average particle diameter of 9.2 μm. After producing the information display panel precursor in which the configured white display medium and the black display medium configured to include positively charged black particles having an average particle size of 9.0 μm are prepared, the information display panel precursor White film made of polyethylene terephthalate (PET) with acrylic adhesive on the entire outer surface of the back glass substrate ( To obtain an information display panel with white layer by bonding the 50 [mu] m).
＜実施例９＞
　背面側となるガラス基板のＩＴＯストライプ電極が形成されていない方の面上の情報表示画面領域にあたる領域に白色顔料が配合されたホワイトマトリックス材層を厚さ２０μｍに製膜して白色層付きの背面パネル基板とした後、所定の粒子群が表示媒体として配置された観察側となるガラス基板と貼り合わせて情報表示用パネルを得た。 <Example 9>
A white matrix material layer in which a white pigment is blended in a region corresponding to the information display screen region on the surface of the glass substrate on the back side where the ITO stripe electrode is not formed is formed to a thickness of 20 μm and has a white layer. After forming a back panel substrate, an information display panel was obtained by pasting together a glass substrate on the observation side on which a predetermined particle group was arranged as a display medium.
＜実施例１０＞
　背面側となるガラス基板のＩＴＯストライプ電極が形成されていない方の面上の情報表示画面領域にあたる領域に白色顔料が配合されたホワイトマトリックス材層を厚さ２０μｍに製膜した後、フォトリソグラフィー技術を用いて隔壁に対応した格子状のホワイトマトリックスを形成し、白色層付きの背面側パネル基板とした。次に、所定の粒子群が表示媒体として配置された観察側となるガラス基板と貼り合わせて情報表示用パネルを得た。 <Example 10>
After forming a white matrix material layer having a thickness of 20 μm in a region corresponding to the information display screen region on the surface of the glass substrate on the back side where the ITO stripe electrode is not formed, a photolithography technique Was used to form a lattice-shaped white matrix corresponding to the partition walls to obtain a back side panel substrate with a white layer. Next, an information display panel was obtained by bonding to a glass substrate on the observation side on which a predetermined particle group was arranged as a display medium.
＜実施例１１＞
　まず、ポリエチレンテレフタレート（ＰＥＴ）製白色フィルム（厚さ５０μｍ）の上に黒色レジストを５μｍ厚に製膜し、下記情報表示用パネル前駆体の画素周囲に配置される透明隔壁に対応したマスクを用いたフォトリソグラフィーでブラックマトリックスを形成した。次に、前記した観察側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）と、背面側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）とを、透明な隔壁によって５０μｍ間隔に対向させた基板間空間に、平均粒子径が９．２μｍの負帯電性白色粒子を含んで構成した白色表示媒体と、平均粒子径が９．０μｍの正帯電性黒色粒子を含んで構成した黒色表示媒体とを配置した情報表示用パネル前駆体を作製し、この情報表示用パネル前駆体の背面側ガラス基板の外側面全面に、前記ブラックマトリックス付きのポリエチレンテレフタレート（ＰＥＴ）製白色フィルムのブラックマトリックス形成面に透明なアクリル系粘着剤を１０μｍ厚で配置して貼り合わせることで、ブラックマトリックスが配置された情報表示用パネルを得た。 <Example 11>
First, a black resist film is formed to a thickness of 5 μm on a white film (thickness 50 μm) made of polyethylene terephthalate (PET), and a mask corresponding to the transparent partition disposed around the pixels of the following information display panel precursor is used. A black matrix was formed by photolithography. Next, the above-mentioned observation side panel substrate (a glass substrate having a thickness of 700 μm with a stripe electrode obtained by patterning an ITO film having a thickness of 100 nm with a width of 30 μm and a space of 30 μm) and a back side panel substrate (300 μm of an ITO film having a thickness of 100 nm). A negatively charged white particle having an average particle diameter of 9.2 μm in a space between substrates having a stripe electrode patterned with a width of 30 μm and a thickness of 700 μm, which is opposed to each other by a transparent partition wall at an interval of 50 μm. An information display panel precursor in which a white display medium configured to include a black display medium configured to include positively charged black particles having an average particle diameter of 9.0 μm is prepared, and the information display panel is prepared. Made of polyethylene terephthalate (PET) with black matrix on the entire outer surface of the back glass substrate of the precursor By bonding with the transparent acrylic adhesive black matrix forming surface of the color film were arranged in 10μm thickness, was obtained information display panel which the black matrix is placed.
＜実施例１２＞
　まず、ポリエチレンテレフタレート（ＰＥＴ）製白色フィルム（厚さ５０μｍ）上の下記情報表示用パネル前駆体の画素周囲に配置される透明隔壁に対応した位置に、黒色フレキソインクを用いて高さ５μｍのブラックマトリックスをフレキソ印刷法で形成した。次に、前記した観察側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）と、背面側パネル基板（１００ｎｍ厚のＩＴＯ膜を３００μｍ幅、３０μｍスペースでパターニングしたストライプ電極付きで厚さが７００μｍのガラス基板）とを、透明な隔壁によって５０μｍ間隔に対向させた基板間空間に、平均粒子径が９．２μｍの負帯電性白色粒子を含んで構成した白色表示媒体と、平均粒子径が９．０μｍの正帯電性黒色粒子を含んで構成した黒色表示媒体とを配置した情報表示用パネル前駆体を作製し、この情報表示用パネル前駆体の背面側ガラス基板の外側面全面に、前記ブラックマトリックス付きのポリエチレンテレフタレート（ＰＥＴ）製白色フィルムのブラックマトリックス形成面に透明なアクリル系粘着剤を１０μｍ厚で配置して貼り合わせることで、ブラックマトリックスが配置された情報表示用パネルを得た。 <Example 12>
First, black 5 mm in height using black flexo ink at a position corresponding to the transparent partition arranged around the pixel of the following information display panel precursor on a white film (thickness 50 μm) made of polyethylene terephthalate (PET). The matrix was formed by flexographic printing. Next, the above-mentioned observation side panel substrate (a glass substrate having a thickness of 700 μm with a stripe electrode obtained by patterning an ITO film having a thickness of 100 nm with a width of 30 μm and a space of 30 μm) and a back side panel substrate (300 μm of an ITO film having a thickness of 100 nm). A negatively charged white particle having an average particle diameter of 9.2 μm in a space between substrates having a stripe electrode patterned with a width of 30 μm and a thickness of 700 μm, which is opposed to each other by a transparent partition wall at an interval of 50 μm. An information display panel precursor in which a white display medium configured to include a black display medium configured to include positively charged black particles having an average particle diameter of 9.0 μm is prepared, and the information display panel is prepared. Made of polyethylene terephthalate (PET) with black matrix on the entire outer surface of the back glass substrate of the precursor By bonding with the transparent acrylic adhesive black matrix forming surface of the color film were arranged in 10μm thickness, was obtained information display panel which the black matrix is placed.
＜比較例１＞
　観察側パネル基板のＩＴＯストライプ電極の上に黒色顔料が配合されたブラックマトリックス材層を５μｍ厚で製膜後、さらにその上に隔壁形成用の透明なドライフィルムレジスト、アルフォＮＩＴ２（ニチゴーモートン社製）を積層し、フォトリソグラフィーにより隔壁とパネル基板との間にブラックマトリックスが配置された観察側パネル基板を得た。次に、その観察側パネル基板のセル内に所定の粒子群を表示媒体として配置した後、背面側となるガラス基板と貼り合わせて情報表示用パネルを得た。 <Comparative Example 1>
After forming a black matrix material layer containing black pigment on the ITO stripe electrode of the observation side panel substrate to a thickness of 5 μm, a transparent dry film resist for forming a partition, Alfo NIT2 (manufactured by Nichigo Morton) And an observation side panel substrate in which a black matrix is disposed between the partition walls and the panel substrate is obtained by photolithography. Next, after arranging a predetermined particle group as a display medium in the cell of the observation side panel substrate, it was bonded to a glass substrate on the back side to obtain an information display panel.
＜比較例２＞
　観察側パネル基板のＩＴＯストライプ電極の上に白色顔料が配合されたブラックマトリックス材層を５μｍ厚で製膜後、さらにその上に隔壁形成用の透明なドライフィルムレジスト、アルフォＮＩＴ２（ニチゴーモートン社製）を積層し、フォトリソグラフィーにより隔壁とパネル基板との間にブラックマトリックスが配置された観察側パネル基板を得た。次に、その観察側パネル基板のセル内に所定の粒子群を表示媒体として配置した後、背面側となるガラス基板と貼り合わせて情報表示用パネルを得た。 <Comparative Example 2>
After forming a black matrix material layer containing white pigment on the ITO stripe electrode of the observation side panel substrate to a thickness of 5 μm, a transparent dry film resist for forming a partition, Alfo NIT2 (manufactured by Nichigo Morton) And an observation side panel substrate in which a black matrix is disposed between the partition walls and the panel substrate is obtained by photolithography. Next, after arranging a predetermined particle group as a display medium in the cell of the observation side panel substrate, it was bonded to a glass substrate on the back side to obtain an information display panel.
　比較例１および比較例２の情報表示用パネルを作製する際に、ブラックマトリックスやホワイトマトリックスを得るために実施したフォトリソグラフィーに掛けた時間は、実施例１、２、３、９、１０でブラックマトリックスやホワイトマトリックスを得るために実施したフォトリソグラフィーに掛けた時間と、それぞれのブラックマトリックスやホワイトマトリックスにおいて同じにしたが、安全率を見込んだ生産工程の条件よりは短時間で実施した。この条件ではフォトリソグラフィー後に残渣がでやすいためか、作製した比較例１および比較例２のすべての情報表示用パネルで基板間リークを発生させてしまった。基板間リークは、出来上がった情報表示用パネルにおいて対向パネル基板間に流れる電流値を測定し、正常パネルで測定された電流値を基準値としてその５倍以上の電流値が計測されたが、実施例１～１２の情報表示用パネルはすべてこの基準値に近い電流値が計測され、リーク発生はなかった。白表示時の反射率は、（株）村上色彩研究所の積分球式全反射率計ＲＭ－５を用いて測定した絶対反射率とした。結果を以下の表１に示す。 When producing the information display panels of Comparative Example 1 and Comparative Example 2, the time taken for photolithography performed to obtain a black matrix and a white matrix was black in Examples 1, 2, 3, 9, and 10. The time taken for the photolithography performed to obtain the matrix and the white matrix was the same as that for each black matrix and the white matrix, but it was performed in a shorter time than the production process conditions that allowed for a safety factor. Under these conditions, a residue is likely to be generated after photolithography, or leakage between substrates was generated in all the information display panels of Comparative Example 1 and Comparative Example 2 manufactured. Inter-substrate leakage was measured by measuring the current value flowing between the opposing panel substrates in the completed information display panel, and the current value measured on the normal panel was more than five times the reference value. In all the information display panels of Examples 1 to 12, a current value close to this reference value was measured, and no leak occurred. The reflectance at the time of white display was an absolute reflectance measured using an integrating sphere total reflectance meter RM-5 of Murakami Color Research Laboratory. The results are shown in Table 1 below.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
　表１の結果から、本発明例の実施例１～１２の情報表示用パネルでは、比較例１、２の情報表示用パネルでは発生した基板間リークが発生せず、白反射率が向上した明るい表示ができるものとなっていることがわかった。 From the results of Table 1, in the information display panels of Examples 1 to 12 of the present invention example, the information display panels of Comparative Examples 1 and 2 did not cause inter-substrate leakage, and the white reflectance was improved. It turned out that it can be displayed.
　また、本発明の情報表示用パネル（実施例１～１２）では、ブラックマトリックス効果を得るためのブラックマトリックスや、ホワイトマトリックス効果を得るためのホワイトマトリックスなどの有色層を、従来の情報表示用パネル（比較例１、２）のようにパネル基板の内側に設けないので、フォトリソグラフィーで形成してもその残渣残りが表示媒体駆動に影響する心配がなく、これまでフォトリソグラフィーで有色層を形成していた場合と比較して短時間で済むばかりか、情報表示用パネル前駆体を作製した後に背面側パネル基板の外側面に形成することもできるので、有色層の配置方法としての選択肢が広がり、用途に合わせた製造方法を用いることができることが分かった。 In addition, in the information display panels (Examples 1 to 12) of the present invention, a colored layer such as a black matrix for obtaining a black matrix effect or a white matrix for obtaining a white matrix effect is provided with a conventional information display panel. Because it is not provided inside the panel substrate as in (Comparative Examples 1 and 2), there is no concern that the residual residue will affect the display medium drive even if it is formed by photolithography. So far, a colored layer has been formed by photolithography. Compared to the case where it was, it can be completed in a short time, and it can be formed on the outer surface of the back side panel substrate after producing the information display panel precursor, so the options for arranging the colored layer are expanded, It turned out that the manufacturing method according to the use can be used.
　本発明の情報表示用パネルは、ノートパソコン、電子手帳、ＰＤＡ(Personal Digital Assistants)と呼ばれる携帯型情報機器、携帯電話、ハンディターミナル等のモバイル機器の表示部、電子書籍、電子新聞等の電子ペーパー、看板、ポスター、黒板（ホワイトボード）等の掲示板、電子卓上計算機、家電製品、自動車用品等の表示部、ポイントカード、ＩＣカード等のカード表示部、電子広告、情報ボード、電子ＰＯＰ(Point Of Presence, Point Of Purchase advertising)、電子値札、電子棚札、電子楽譜、ＲＦ－ＩＤ機器の表示部のほか、ＰＯＳ端末、カーナビゲーション装置、時計など様々な電子機器の表示部に好適に用いられるほか、外部書換え手段に接続して表示書換えを行う表示部（リライタブルペーパー）としても好適に用いられる。 The information display panel of the present invention is a notebook computer, an electronic notebook, a portable information device called PDA (Personal Digital Assistants), a display unit of a mobile device such as a mobile phone or a handy terminal, an electronic paper such as an electronic book or an electronic newspaper. , Billboards such as signboards, posters, blackboards (whiteboards), electronic desk calculators, display units for home appliances, automotive products, 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, RF-ID device display unit, as well as POS terminal, car navigation device, display unit of various electronic devices such as watches, etc. It is also suitably used as a display unit (rewritable paper) that is connected to external rewriting means and performs display rewriting.
　表示媒体としては、これまでに説明した帯電性粒子を含んだ粒子群の他に、導電性粒子を含んだ粒子群、半導体性粒子を含んだ粒子群など、電極を介して電気的に駆動できる種々なタイプの表示媒体を用いることができる。本発明の対象となる情報表示用パネルの駆動方式については、パネル自体にスイッチング素子を用いない単純マトリックス駆動方式やスタティック駆動方式、また、薄膜トランジスタ（ＴＦＴ）で代表される三端子スイッチング素子あるいは薄膜ダイオード（ＴＦＤ）で代表される二端子スイッチング素子を用いたアクティブマトリックス駆動方式や、種々のタイプの駆動方式の情報表示用パネルに適用できる。 As the display medium, in addition to the particle group including the charged particles described above, a particle group including conductive particles, a particle group including semiconductor particles, and the like can be electrically driven via an electrode. Various types of display media can be used. As for the driving method of the information display panel which is the object of the present invention, a simple matrix driving method and a static driving method which do not use a switching element in the panel itself, a three-terminal switching element represented by a thin film transistor (TFT), or a thin film diode The present invention can be applied to an active matrix driving method using a two-terminal switching element represented by (TFD) and information display panels of various types of driving methods.
　１、２　基板
　３Ｗ　白色表示媒体
　３Ｗａ　帯電性白色粒子
　３Ｂ　黒色表示媒体
　３Ｂａ　帯電性黒色粒子
　４　隔壁
　５、６　電極
　７　絶縁液体
　８　カプセル
　９　接着剤
　１１Ｒ　赤色カラーフィルター
　１１Ｇ　緑色カラーフィルター
　１１ＢＬ　青色カラーフィルター
　１１Ｔ　無色透明カラーフィルター
　１２　平坦化層
　２１　セル
　３１　有色層
　４１　シート
　４２　アライメントマーク
　４３　ロットＮｏ．の印字
　４４　各情報表示用パネルに対応する領域
　４５　散乱層 1, 2 Substrate 3W White display medium 3Wa Chargeable white particle 3B Black display medium 3Ba Chargeable black particle 4 Bulkhead 5, 6 Electrode 7 Insulating liquid 8 Capsule 9 Adhesive 11R Red color filter 11G Green color filter 11BL Blue color filter 11T Colorless Transparent color filter 12 Flattening layer 21 Cell 31 Colored layer 41 Sheet 42 Alignment mark 43 Lot No. Printing 44 Area corresponding to each information display panel 45 Scattering layer

Claims (11)

  1. 　少なくとも情報表示画面領域が透明な観察側パネル基板と背面側パネル基板との間に、隔壁によりセルを形成し、パネル基板に設けた電極間に電圧を印加することにより、表示媒体を移動させて情報を表示する情報表示用パネルにおいて、少なくとも情報表示用パネルの情報表示画面領域に対応する、前記隔壁、前記背面側パネル基板および前記背面側パネル基板上の電極を透明とし、有色層を前記背面側パネル基板の外側の少なくとも前記情報表示画面領域に設けたことを特徴とする、情報表示用パネル。 The display medium is moved by forming a cell with a partition between the observation side panel substrate and the back side panel substrate having at least a transparent information display screen area, and applying a voltage between electrodes provided on the panel substrate. In the information display panel for displaying information, the partition, the back side panel substrate, and the electrode on the back side panel substrate corresponding to at least the information display screen area of the information display panel are transparent, and the colored layer is the back surface An information display panel provided at least in the information display screen area outside a side panel substrate.
  2. 　前記有色層は、前記表面基板側から視て、前記隔壁と対応する部分に形成されていることを特徴とする、請求項１に記載の情報表示用パネル。 2. The information display panel according to claim 1, wherein the colored layer is formed in a portion corresponding to the partition as viewed from the surface substrate side.
  3. 　前記有色層は、前記情報表示画面領域の全面に形成されていることを特徴とする請求項１に記載の情報表示用パネル。 2. The information display panel according to claim 1, wherein the colored layer is formed on the entire surface of the information display screen area.
  4. 　前記隔壁上に接着層が形成され、前記隔壁及び前記接着層を介して前記観察側パネル基板と前記背面側パネル基板とが固定され、前記観察側パネル基板の外側には、光を散乱する散乱層が形成されていることを特徴とする、請求項１～３に記載の情報表示用パネル。 An adhesive layer is formed on the partition wall, and the observation side panel substrate and the back side panel substrate are fixed via the partition wall and the adhesive layer, and light is scattered outside the observation side panel substrate. 4. The information display panel according to claim 1, wherein a layer is formed.
  5. 　前記散乱層は、前記散乱層の表面に凹凸を有することにより、光を散乱することを特徴とする、請求項４に記載の情報表示用パネル。 The information display panel according to claim 4, wherein the scattering layer scatters light by having irregularities on a surface of the scattering layer.
  6. 　前記散乱層は、前記散乱層の屈折率と異なる屈折率を持つ粒子を前記散乱層内部に含むことにより、光を散乱することを特徴とする、請求項４に記載の情報表示用パネル。 The information display panel according to claim 4, wherein the scattering layer scatters light by including particles having a refractive index different from that of the scattering layer inside the scattering layer.
  7. 　前記有色層が白色又は黒色であることを特徴とする、請求項１～６のいずれか１項に記載の情報表示用パネル。 The information display panel according to any one of claims 1 to 6, wherein the colored layer is white or black.
  8. 　前記隔壁により形成されたセルに対応して、前記対向する電極間にマトリックス配置されている画素を４個形成したことを特徴とする、請求項１～７のいずれか１項に記載の情報表示用パネル。 The information display according to any one of claims 1 to 7, wherein four pixels arranged in a matrix between the opposing electrodes are formed corresponding to the cells formed by the partition walls. Panel.
  9. 　請求項１～８のいずれか１項に記載した情報表示用パネルの製造方法において、前記２枚のパネル基板間に表示媒体を封入した情報表示用パネルを作製するステップと、前記背面側パネル基板の外側の少なくとも前記情報表示画面領域に前記有色層を設けるステップとを含むことを特徴とする、情報表示用パネルの製造方法。 9. The information display panel manufacturing method according to claim 1, wherein a step of producing an information display panel in which a display medium is sealed between the two panel substrates, and the back side panel substrate. Providing the colored layer in at least the information display screen area outside the frame. The method for manufacturing an information display panel, comprising:
  10. 　前記背面側パネル基板の外側面の少なくとも前記情報表示画面領域に設ける前記有色層を、印刷法またはフォトリソグラフィー法で設けることを特徴とする、請求項９に記載の情報表示用パネルの製造方法。 10. The method for manufacturing an information display panel according to claim 9, wherein the colored layer provided in at least the information display screen region on the outer side surface of the back side panel substrate is provided by a printing method or a photolithography method.
  11. 　前記背面側パネル基板の外側面の少なくとも前記情報表示画面領域に設ける前記有色層を、前記有色層が印刷法またはフォトリソグラフィー法で形成されたシート部材を背面側パネル基板の外側面に貼り合わせて形成されることを特徴とする、請求項９に記載の情報表示用パネルの製造方法。 The colored layer provided in at least the information display screen region on the outer side surface of the back side panel substrate is bonded to the outer side surface of the back side panel substrate with a sheet member in which the colored layer is formed by a printing method or a photolithography method. The method for manufacturing an information display panel according to claim 9, wherein the information display panel is formed.
PCT/JP2010/007114 2009-12-07 2010-12-07 Information display panel and method for manufacturing the same WO2011070769A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2009-277973 2009-12-07
JP2009277973 2009-12-07
JP2010-073609 2010-03-26
JP2010073895A JP2011209325A (en) 2010-03-26 2010-03-26 Image display panel
JP2010073609A JP2011141511A (en) 2009-12-07 2010-03-26 Information display panel and method for manufacturing the same
JP2010-073895 2010-03-26

Publications (1)

Publication Number Publication Date
WO2011070769A1 true WO2011070769A1 (en) 2011-06-16

Family

ID=44145331

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/007114 WO2011070769A1 (en) 2009-12-07 2010-12-07 Information display panel and method for manufacturing the same

Country Status (1)

Country Link
WO (1) WO2011070769A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8520431B2 (en) 2011-03-11 2013-08-27 Micron Technology, Inc. Devices and methods to program a memory cell
CN115524891A (en) * 2021-06-24 2022-12-27 京东方科技集团股份有限公司 Total reflection display device and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0276716U (en) * 1988-12-01 1990-06-12
JP2005114820A (en) * 2003-10-03 2005-04-28 Toppan Printing Co Ltd Microcapsule type electrophoresis display panel and its manufacturing method
JP2007017735A (en) * 2005-07-08 2007-01-25 Hitachi Displays Ltd Image display device
JP2007156444A (en) * 2005-11-09 2007-06-21 Bridgestone Corp Panel for information display

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0276716U (en) * 1988-12-01 1990-06-12
JP2005114820A (en) * 2003-10-03 2005-04-28 Toppan Printing Co Ltd Microcapsule type electrophoresis display panel and its manufacturing method
JP2007017735A (en) * 2005-07-08 2007-01-25 Hitachi Displays Ltd Image display device
JP2007156444A (en) * 2005-11-09 2007-06-21 Bridgestone Corp Panel for information display

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8520431B2 (en) 2011-03-11 2013-08-27 Micron Technology, Inc. Devices and methods to program a memory cell
US8773900B2 (en) 2011-03-11 2014-07-08 Micron Technology, Inc. Devices and methods to program a memory cell
US9087583B2 (en) 2011-03-11 2015-07-21 Micron Technology, Inc. Devices and methods to program a memory cell
US9496035B2 (en) 2011-03-11 2016-11-15 Ovonyx Memory Technology, Llc Devices and methods to program a memory cell
US9887005B2 (en) 2011-03-11 2018-02-06 Ovonyx Memory Technology, Llc Devices and methods to program a memory cell
US10262735B2 (en) 2011-03-11 2019-04-16 Ovonyx Memory Technology, Inc. Devices and methods to program a memory cell
US10706926B2 (en) 2011-03-11 2020-07-07 Ovonyx Memory Technology, Llc Devices and methods to program a memory cell
US11120873B2 (en) 2011-03-11 2021-09-14 Ovonyx Memory Technology, Llc Devices and methods to program a memory cell
CN115524891A (en) * 2021-06-24 2022-12-27 京东方科技集团股份有限公司 Total reflection display device and preparation method thereof

Similar Documents

Publication Publication Date Title
WO2010146810A1 (en) Information displaying panel
WO2009145255A1 (en) Electronic paper
WO2010073716A1 (en) Information display panel
WO2011070769A1 (en) Information display panel and method for manufacturing the same
JP2011095339A (en) Panel for color display-type information display
JP2009031370A (en) Panel for information display
JP2008287172A (en) Panel for information display
JP5066355B2 (en) Manufacturing method of information display panel
JP2010107723A (en) Mother panel for information display panel, energization testing method for same, and information display panel manufactured by using mother panel
JP2010160251A (en) Panel for information display and electronic pop and electronic shelf label using same
WO2010010954A1 (en) Dot matrix type information display panel
JP2010139863A (en) Dot matrix type display panel
JP2011141511A (en) Information display panel and method for manufacturing the same
JP2011018007A (en) Information display panel
JP2011237544A (en) Color filter substrate, manufacturing method thereof, and color display type panel for information display
JP2010145528A (en) Method for manufacturing color information display panel and color information display panel
JP2009271192A (en) Panel for information display
JP2010256560A (en) Method for manufacturing display panel for color display, and display panel for color display
JP2010032723A (en) Mother substrate and method of inspecting leakage of electrode using the same
JP2010139569A (en) Information display panel and method for manufacturing the information display panel
WO2009113626A1 (en) Information display panel
JP2009069405A (en) Panel for information display
JP2011170047A (en) Method for manufacturing color display type information display panel
JP2009288522A (en) Panel for information display and method for manufacturing the same
JP2011186289A (en) Multiply demarcated color electrophoretic display device and method for manufacturing the same

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10835695

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10835695

Country of ref document: EP

Kind code of ref document: A1