JP2012203375A - Method for manufacturing information display device, scattering reflective display body for information display device, and information display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a scattering reflective information display device, which allows a display state to be evaluated before formation of pixel electrodes, color filters, or the like and reduces a gap between a color filter layer and a display medium layer to reduce the occurrence of parallax.SOLUTION: A scattering reflective display body 120 having a substrate 101 including a soluble component, a receptive layer 102, a transparent conductive film 103, a microcapsule layer 104, an adhesive layer 105, a silicone release agent layer 106, a transparent conductive film 107, and a PET film 108 laminated in this order is manufactured, and a scattering reflection state of the microcapsule layer 104 is changed by application of an inspection voltage between the transparent conductive films 103 and 107, to inspect a display state, and then, the silicone release agent layer 106 is peeled from an interface between the silicone release agent layer 106 and the adhesive layer 105, and a backside plate 202 having pixel electrodes 201 formed thereon is bonded so that the pixel electrodes 201 are brought into contact with the adhesive layer 105. Subsequently, the substrate 101 including the soluble component is solved and removed to expose a surface of the receptive layer 102, and then a color filter layer is formed on the surface of the receptive layer 102.

Description

  The present invention relates to a method for manufacturing an information display device, a scattering reflection type display body for an information display device, and an information display device intended for a scattering reflection type information display device.

  A reflective LCD (Liquid Crystal Display) that has a backlight on the back and controls the light emitted from the liquid crystal panel for display. However, it has come to be used mainly for portable information terminals because of its low power consumption and good visibility under direct sunlight. In recent years, a display using a display principle different from that of an LCD has been reported, and is expected as a reflective display having characteristics that are not found in an LCD.

  Currently, two types of LCD display methods, TN (Twisted Nematic) method and STN (Super Twisted Nematic) method, are mainly used. Furthermore, an IPS (In-Plane Switching) method, an MVA (Multidomain Vertical Alignment) method, And OCB (Optical Compensated Birefringence) method and the like have been reported. Each of these display methods itself controls the light transmission state, and the display color cannot be changed. Therefore, it is necessary to use a color filter in order to perform color display.

  As another display method instead of LCD, an electrophoretic method in which charged fine particles are moved by an electric field (see, for example, Patent Document 1), and a twist ball method in which spheres that are painted in two colors are rotated by an electric field (for example, a patent) Reference 2), a polymer-dispersed liquid crystal system (PDLC Polymer Dispersion Liquid Crystal) that controls the alignment state inside the liquid crystal droplets dispersed in resin with an electric field (for example, see Patent Document 3), and the resin component ratio is There is a polymer network type liquid crystal system (PNLC Polymer Network Liquid Crystal) (for example, see Patent Document 4) in which a small polymer has a network structure in a liquid crystal.

  In any of these display systems, the scattering / reflection state is controlled by an electric field, and it is difficult to display a color by itself, so it is practical to use a color filter. As a method of color display using the color filter, a substrate having electrodes corresponding to a plurality of pixels and a substrate having a color filter are accurately positioned between the set pixel position and the color filter position. It is common to paste together. However, as the number of pixels to be displayed becomes finer and the number of pixels increases, the required alignment accuracy increases and it becomes difficult to increase the screen size and resolution.

  Therefore, a scattering reflection type color display body having a configuration in which the color filter is formed on the display medium directly to form the color filter with high accuracy and does not require alignment when the two substrates are bonded together. It has been proposed (see, for example, Patent Document 5). This scattering reflection type color display is formed by the following procedure. That is, first, on a first substrate having a plurality of pixel electrodes connected to a plurality of active elements such as TFTs (Thin Film Transistors), a display medium capable of controlling the scattering reflection state by applying a voltage is formed. .

  Next, a color filter composed of a plurality of colored layers having a predetermined pattern is formed on the display medium at a position corresponding to the pixel electrode by printing by screen printing or printing by an ink jet printer. For the colored layer, three colors of Red, Green, and Blue, or three colors of Cyan, Magenta, and Yellow are used. Next, a second substrate having a transparent electrode provided in a planar shape to be a counter electrode is bonded to the first substrate to obtain a scattering reflection type color display body.

JP-A-1-86116 JP-A-1-42683 JP 2001-92383 A JP 2001-154219 A JP 2003-108035 A

  By the way, when manufacturing the above-mentioned scattering reflection type color display body, there is a problem that the discovery of a defective portion occurring in the display medium is delayed. In other words, as a defect that occurs in the display medium, it is possible to control the scattering / reflection state normally when a voltage is applied to the display medium due to the inclusion of conductive or insulating foreign matter or unevenness in the layer thickness of the display medium. There is something that can not be done.

  This defect can be found at a stage after the second substrate having the transparent electrode serving as the counter electrode is bonded to the first substrate having the pixel electrode. A defect can be found only after a predetermined voltage is applied between the transparent electrodes as electrodes.

  Therefore, even if a defect can be found, since it is already after the first substrate and the second substrate are bonded together, expensive members such as pixel electrodes and colored layers are wasted. Will end up.

  Accordingly, the present invention has been made paying attention to the above-described conventional problems, and a method for manufacturing an information display device capable of performing evaluation of a display state at a stage before manufacturing a pixel electrode, a color filter, or the like. Another object of the present invention is to provide a scattering reflection display for an information display device and an information display device.

  In order to achieve the above object, the present invention performs display by controlling the scattering reflection state of a display medium provided between the electrodes by a voltage applied between a pixel electrode or a segment electrode and a counter electrode. A method for manufacturing an information display device, the step of generating a first member by laminating a substrate containing a soluble component, a transparent conductive film, and a display medium layer made of a scattering reflection type display medium in this order, The first substrate, the conductive film, the release agent layer, and the adhesive layer are laminated in this order to form the second member, and the display medium layer and the adhesive layer are in contact with each other. The first member and the second member are bonded to each other to form a scattering reflection type display body, and the display medium is scattered by applying an inspection voltage between the transparent conductive film and the conductive film. Inspection process for changing the reflection state, and after the inspection process, the mold release Peeling the interface between the layer and the adhesive layer, and bonding the second substrate on which the pixel electrode or segment electrode is formed so that the pixel electrode or segment electrode and the adhesive layer are in contact with each other And a step of dissolving and removing the substrate containing the soluble component to expose a resin film for fixing the colored component such as the pigment or dye.

  In the manufacturing method, at least one of the substrate containing the soluble component or the first substrate, the conductive film, the release agent layer, and the adhesive layer is transparent.

  In the manufacturing method, the transparent conductive film is a transparent conductive film such as an ITO film (indium / tin oxide), a zinc oxide film, or a tin oxide film.

  In the above manufacturing method, the conductive film is any one of a transparent conductive film such as an ITO film (indium / tin oxide), a zinc oxide film, and a tin oxide film, or a metal thin film such as an aluminum thin film. .

  Due to these characteristics, the scattering reflection state of the display medium is changed by applying an inspection voltage between the transparent conductive film and the conductive film from the substrate containing the soluble component or the first substrate side in the inspection step. It can be visually recognized.

  Further, in the manufacturing method, after the step of dissolving and removing the substrate containing the soluble component and exposing the resin film that fixes the colored component such as the pigment or dye, the coloring of the pigment or dye exposed in the step is performed. The resin film for fixing the component includes a step of forming a color filter so as to face the pixel electrode or the segment electrode, and a transparent surface protective layer is formed on the color filter.

  In the manufacturing method, the substrate containing the soluble component is dissolved by being immersed in a solution.

  In the manufacturing method, the substrate containing the soluble component is dissolved in water, and the solution is water.

  Moreover, in the said manufacturing method, the board | substrate containing the said soluble component is either a polyvinyl alcohol-type resin or a starch-type resin, It is characterized by the above-mentioned.

  Moreover, in the said manufacturing method, the board | substrate containing the said soluble component melt | dissolves with respect to an enzyme, and the said solution contains an enzyme, It is characterized by the above-mentioned.

  Moreover, in the said manufacturing method, the board | substrate containing the said soluble component is a cellulose resin, It is characterized by the above-mentioned.

  In the above production method, the enzyme contained in the solution is cellulase.

  In the manufacturing method, the first substrate is a glass substrate.

  In the manufacturing method, the first substrate is a resin substrate.

  In the manufacturing method, the resin substrate is one of a polycarbonate resin, a polyester resin, a methacrylic resin, a styrene resin, a polyvinyl chloride resin, a polyolefin resin, and a polyamide resin. .

  In the above production method, the resin film for fixing the coloring component such as the pigment or dye may be a polycarbonate resin, a polyester resin, a methacrylic resin, a styrene resin, a polyvinyl chloride resin, a polyolefin resin, or a polyamide resin. And any one of polyurethane-based resins, which are water-insoluble.

  In the manufacturing method, the transparent surface protective layer is a resin film.

  In the above production method, the resin film as the transparent surface protective layer may be any one of polycarbonate resin, polyester resin, methacrylic resin, styrene resin, polyvinyl chloride resin, polyolefin resin, and polyamide resin. It is characterized by being.

  Further, in the above manufacturing method, the display medium layer is an electrophoretic display medium comprising an electrophoretic liquid in which a solvent and at least two kinds of dispersible particles having different optical characteristics and charging characteristics are dispersed in a hollow structure. It is characterized by becoming.

  In the manufacturing method, the display medium layer is made of a polymer-dispersed liquid crystal display medium.

  In the manufacturing method, the display medium layer is made of a polymer network type liquid crystal display medium.

  In the manufacturing method, the display medium layer is made of a microcapsule-type electrophoresis display medium.

  The present invention also includes a substrate containing a soluble component, a resin film for fixing a coloring component such as a pigment or a dye, a transparent conductive film, a display medium layer composed of a scattering reflection type display medium, an adhesive layer, A release agent layer, a conductive film, and a first substrate are laminated in this order, and are a scattering reflection type display body that is applied to an information display device, between the transparent conductive film and the conductive film. The scattering reflection state of the display medium is controlled by a voltage applied to the display medium.

  In the scattering reflection display, at least one of the substrate containing the soluble component or the first substrate, the conductive film, the release agent layer, and the adhesive layer is transparent.

  In the scattering reflection display, the transparent conductive film is a transparent conductive film such as an ITO film (indium / tin oxide), a zinc oxide film, or a tin oxide film.

  In the scattering reflection display, the conductive film may be a transparent conductive film such as an ITO film (indium / tin oxide), a zinc oxide film, or a tin oxide film, or a metal thin film such as an aluminum thin film. It is a feature.

  In the scattering reflection display, the substrate containing the soluble component is dissolved by being immersed in a solution.

  In the scattering reflection display, the substrate containing the soluble component is dissolved in water, and the solution is water.

  In the scattering reflection display, the substrate containing the soluble component is one of a polyvinyl alcohol resin and a starch resin.

  In the scattering reflection display, the substrate containing the soluble component is dissolved in the enzyme, and the solution contains the enzyme.

  In the scattering reflection display, the substrate containing the soluble component is a cellulose resin.

  In the scattering reflection display, the enzyme contained in the solution is cellulase.

  In the scattering reflection display, the first substrate is a glass substrate.

  In the scattering reflection display, the first substrate is a resin substrate.

  In the scattering reflection display, the resin substrate may be any one of polycarbonate resin, polyester resin, methacrylic resin, styrene resin, polyvinyl chloride resin, polyolefin resin, and polyamide resin. It is a feature.

  Further, in the scattering reflection display, the resin film for fixing the coloring component such as the pigment or the dye is a polycarbonate resin, a polyester resin, a methacrylic resin, a styrene resin, a polyvinyl chloride resin, a polyolefin resin, It is either a polyamide resin or a polyurethane resin, and is characterized by being water-insoluble.

  Further, in the scattering reflection type display body, the display medium layer is an electrophoresis system comprising an electrophoretic liquid in which a solvent and at least two kinds of dispersible particles having different optical characteristics and charging characteristics are dispersed in a hollow structure. It is characterized by comprising a display medium.

  In the scattering reflection display, the display medium layer is made of a polymer dispersion type liquid crystal display medium.

  In the scattering reflection display, the display medium layer is made of a polymer network type liquid crystal display medium.

  In the scattering reflection display, the display medium layer is made of a microcapsule type electrophoretic display medium.

  In addition, the present invention includes a second substrate having a pixel electrode or a segment electrode formed on one surface, a display medium layer including an adhesive layer and a scattering reflection type display medium, and the pixel electrode or the segment electrode. A transparent conductive film serving as a counter electrode, a color filter formed on a resin film for fixing a coloring component such as a pigment or a dye, and a transparent surface protective layer are laminated in this order, and the adhesive layer is the pixel electrode or An information display device laminated on the second substrate so as to cover a segment electrode, wherein the voltage is applied between the pixel electrode or the segment electrode and the transparent conductive film as the counter electrode. It is characterized in that information display is performed by controlling the scattering reflection state of the display medium.

  In the information display device, the display medium layer is an electrophoretic display medium comprising an electrophoretic liquid in which a solvent and at least two kinds of dispersible particles having different optical characteristics and charging characteristics are dispersed in a hollow structure. It is characterized by consisting of.

  In the information display device, the display medium layer is made of a polymer-dispersed liquid crystal display medium.

  In the information display device, the display medium layer is made of a polymer network type liquid crystal display medium.

  In the information display device, the display medium layer is made of a microcapsule type electrophoretic display medium.

  According to the method for manufacturing an information display device according to the present invention, a display medium comprising a substrate containing a soluble component, a resin film for fixing a colored component such as a pigment or dye, a transparent conductive film, and a scattering reflection type display medium. A first member obtained by laminating layers in this order, a first substrate, a transparent conductive film, a release agent layer, and a second member obtained by laminating an adhesive layer in this order. A scattering reflection type display body is produced by bonding so that the adhesive layer is in contact with the adhesive layer, and the display voltage is applied by applying an inspection voltage between the transparent conductive film and the conductive film of the scattering reflection type display body. After changing the scattering reflection state of the medium, the interface between the release agent layer and the adhesive layer of the scattering reflection type display body is peeled, and the second substrate on which the pixel electrode or the segment electrode is formed, Adhering so that the pixel electrode or segment electrode and the adhesive layer are in contact, The resin film for fixing the coloring components such as the pigment or dye al, generates the information display device by dissolving separated from the substrate including the soluble components.

  Further, since at least one of the substrate containing the soluble component or the first substrate, the conductive film, the release agent layer, and the adhesive layer is transparent, it is for inspection between the transparent conductive film and the conductive film. Since the display state can be inspected from the scattering reflection state of the display medium at the stage of applying the voltage, it is possible to avoid performing a wasteful operation such as manufacturing an information display device having a defect in the display medium, In addition, it is possible to avoid wasting a part or the like manufactured in a subsequent process such as a pixel electrode or a segment electrode.

  In addition, after forming a pixel electrode or a segment electrode and a transparent conductive film to be a counter electrode, a color filter is directly formed on a resin film formed on the transparent conductive film and fixing a coloring component such as pigment or dye. Therefore, the color filter and the color filter can be more easily and accurately compared to the case where the substrate on which the pixel electrode or the segment electrode is formed and the substrate on which the color filter is formed are bonded while being aligned. The alignment with the pixel electrode or the segment electrode can be performed.

  Furthermore, since the substrate containing a soluble component has a property of dissolving and detaching from a resin film that fixes a colored component such as a pigment or a dye by dipping in a solution, a resin that fixes a colored component such as a pigment or a dye. The film and the transparent conductive film can be easily transferred to the display medium layer.

  Further, the scattering reflection type display body for an information display device according to the present invention is bonded to a display medium layer composed of a substrate containing a soluble component, a resin film for fixing a coloring component such as a pigment or dye, and a scattering reflection type display medium. An agent layer, a conductive film, and a transparent substrate are laminated, and in addition, at least one of the substrate containing the soluble component or the first substrate, the conductive film, the release agent layer, and the adhesive layer. Since one side is transparent, the scattering reflection state of the display medium can be changed by applying a voltage between the transparent conductive film and the presence or absence of a defect in the display medium layer can be detected from the changed state. Can do.

  Furthermore, the information display device according to the present invention includes a second substrate on which a pixel electrode or a segment electrode is formed, an adhesive layer, a display medium layer composed of a scattering reflection type display medium, a transparent conductive film, and coloring such as a pigment or a dye. Since the color filter formed on the resin film for fixing the component and the surface protective layer are laminated, an information display device in which the color filter and the pixel electrode or the segment electrode are arranged to face each other with high accuracy is obtained. Color display with good image quality can be performed.

Sectional drawing which shows one structural example of the scattering reflection type display body for information display apparatuses which concerns on embodiment of this invention. Sectional drawing which shows an example of the manufacturing process for demonstrating the manufacturing method of the scattering reflection type display body for information display apparatuses which concerns on embodiment of this invention. Sectional drawing which shows an example of the manufacturing process for demonstrating the manufacturing method of the information display apparatus which concerns on embodiment of this invention. Sectional drawing which shows one structural example of the information display apparatus which concerns on embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, this invention is not limited to the following embodiment.

  First, a first embodiment of the present invention will be described.

  FIG. 1 shows a configuration example of a scattering reflection type display body 120 for an information display device to which the present invention is applied, and is a cross-sectional view showing the configuration of a microcapsule type electrophoretic scattering reflection type display body. It is.

  In FIG. 1, 101 is a substrate containing a soluble component, 102 is a receiving layer for fixing a pigment, 103 is a transparent conductive film (first transparent conductive film), 104 is a microcapsule layer (display medium layer), and 105 is an adhesive. 106, a silicone release agent layer (release agent layer), 107 a transparent conductive film (second transparent conductive film) paired with the transparent conductive film 103, and 108 a PET (polyethylene terephthalate) film (first Substrate).

  A method of manufacturing the scattering reflection type display body 120 shown in FIG. 1 will be described with reference to FIG. First, a dispersion obtained by dispersing titanium oxide particles having a particle size of 0.1 μm and carbon black particles having a particle size of 0.1 μm in an organic solvent as white particles and black particles, respectively, is sealed in a urea resin, A 100 μm microcapsule 109 was formed.

  Next, as shown in FIG. 2A, a receiving layer 102 for fixing the pigment ink to a PVA (polyvinyl alcohol) film 101 having a thickness of about 35 μm was applied and formed so as to have a thickness of about 15 μm when dried. . A water-soluble poval film “VF-H” (Kuraray Co., Ltd.) was used as the PVA film, and an ink-jet ink receiving layer “Diaroma IJ110APK” (Daiichi Seika Co., Ltd.) was used as the receiving layer.

  Next, an ITO (Indium Tin Oxide) layer having a thickness of about 1,000 mm is formed on the surface of the receiving layer 102 as the transparent conductive film 103, and then the microcapsules 109 are densely formed on the surface of the transparent conductive film 103. One layer was spread to form the microcapsule layer 104, and an open ink sheet 501 (first member) made of these laminates was produced.

  Next, as shown in FIG. 2B, an ITO layer having a thickness of about 1,000 mm is formed as a transparent conductive film 107 on the surface of the PET film 108 having a thickness of about 100 μm. A transparent silicone release agent was applied as a release agent to the surface of the film to form a silicone release agent layer 106.

  Next, a transparent thermoplastic adhesive was applied to the surface of the silicone release agent layer 106 to form the adhesive layer 105, and an adhesive sheet 502 (second member) made of these laminates was produced.

  Next, the surface of the microcapsule layer 104 of the open ink sheet 501 is laminated with a rubber roll heated to about 100 ° C. so that the adhesive layer 105 of the adhesive sheet 502 is adhered, and the scattering reflection type shown in FIG. The display body 120 was produced. Note that the adhesive layer 105 may be provided with conductivity.

  In the scattering reflection type display body 120 of FIG. 1 obtained in this way, a conductive wire is connected to the transparent conductive films 103 and 107 facing each other with the microcapsule layer 104 interposed therebetween, and transparent when the transparent conductive film 103 side is set to the ground potential. When a voltage for inspection was applied to the conductive film 107 so as to be “+15 V” or “−15 V”, as viewed from the PET film 108 side, the PET film 108, the transparent conductive film 107, the silicone release agent layer 106, and the adhesive Through the layer 105, it was confirmed that the microcapsule layer 104 changed to black when "+ 15V" was applied, and changed to white when "-15V" was applied. Further, when a colored portion different from that of the surrounding microcapsules 109 was confirmed, contaminants could be confirmed between the microcapsule layer 104 and the adhesive layer 105.

  Here, in the scattering reflection display 120 of FIG. 1, the microcapsule layer 104 as a display medium layer is disposed between the two transparent conductive films 103 and 107 facing each other. , The scattering reflection state of the display medium layer can be changed by applying a potential difference between the transparent conductive films 103 and 107 on the two surfaces, and mixing of conductive or insulating foreign matter into the display medium layer, It is possible to find a defect such as that the scattering / reflection state cannot be controlled normally when a voltage is applied to the display medium layer due to the uneven thickness of the display medium layer.

  Next, in the scattering reflection type display body 120 of FIG. 1, the silicone release agent layer 106 and the silicone release agent layer 106 are separated from the scattering reflection type display body 120 by peeling them at the interface between the adhesive layer 105 and the silicone release agent layer 106. The transparent conductive film 107 and the PET film 108 were removed. In addition, after removing the silicone release agent layer 106, the transparent conductive film 107, and the PET film 108 from the scattering reflection type display body 120, the substrate 101 containing the soluble component, the receiving layer 102, the transparent conductive film 103, and the microcapsule layer. A laminate composed of 104 and the adhesive layer 105 is referred to as a first laminate 121.

  Further, as shown in FIG. 3a, a back plate 202 made of a glass substrate having a thickness of about 1 mm and provided with a pixel electrode 201 having a line width of about 150 μm, connected to an active element (not shown) and corresponding to each pixel. The (second substrate) was bonded to the first stacked body 121 such that the adhesive layer 105 and the pixel electrode 201 were bonded to each other.

  A laminate made of the substrate 101 including a soluble component, the receiving layer 102, the transparent conductive film 103, the microcapsule layer 104, the adhesive layer 105, the pixel electrode 201, and the back plate 202, which is manufactured in this manner, It is set as the laminated body 122 of this.

  Note that the alignment when the first laminate 121 and the back plate 202 are bonded does not need to be highly accurate. For example, the first laminate 121 and the back plate 202 are bonded to a portion where pixel electrodes are arranged in a display size such as 6 inches or 8 inches. Just do it.

  Next, as shown in FIG. 3b, a water-resistant sealant 301 is applied to the peripheral portion of the first laminate 121 in the second laminate 122, and the microcapsule layer 104 and the adhesive layer 105 are sealed. Thus, a third laminate 123 was obtained.

  Next, the third laminated body 123 was dipped in a container containing water, and stirred with a propeller to form a water flow to dissolve and remove the substrate 101 containing soluble components, thereby obtaining a fourth laminated body 124 (FIG. 3c).

  Here, the substrate 101 containing a soluble component is removed from the third laminate 123 by dissolving it in water, so that the water-insoluble receptor layer 102 can be exposed on the surface of the fourth laminate 122.

  Next, as shown in FIG. 4, stripes of three colors of Red, Green, and Blue are formed on the surface of the receiving layer 102 exposed on the surface opposite to the back plate 202 of the fourth laminate 124 by an inkjet printer. A color filter 401 made of a colored layer was formed in correspondence with the pixel electrode 201.

  Further, the surface of the formed color filter 401 was covered with an acrylic resin to form a surface protective layer 402.

  For the resin film as the transparent surface protective layer 402, polycarbonate resin, polyester resin, methacrylic resin, styrene resin, polyvinyl chloride resin, polyolefin resin, polyamide resin, or the like can be applied. .

  As a result, a scattering reflection type information display device 500 was manufactured in which the transparent conductive film 103 was used as a counter electrode and the pixel electrode 201 and the transparent conductive film 103 were used as display control electrodes.

  Here, as described above, since the substrate 101 containing a soluble component is dissolved in water and removed from the receiving layer 102, the receiving layer 102 and the transparent conductive film 103 are formed in the open ink sheet 501 of FIG. It can be easily transferred to the microcapsule layer 104 which is a display medium layer. As a result, the color filter 401 can be formed directly on the surface of the receiving layer 102.

  Note that when the color filter 401 is formed, the color filter 401 is formed at a position corresponding to the pixel electrode 201 with high accuracy. The alignment of the color filter 401 is performed by providing an alignment mark on the back plate 202 in advance and using this alignment mark. Alternatively, a voltage is actually applied between the pixel electrode 201 and the transparent conductive film 103 to change the scattering reflection state of the display medium, and confirm the pixels that actually form each color of the color filter.

  In the scattering reflection type information display device 500 thus obtained, it was confirmed that the color filter 401 was accurately arranged at a position facing the pixel electrode 201.

  It was also confirmed that good white, black, red, green, blue, and other colors can be displayed by applying a predetermined voltage between the pixel electrode 201 and the transparent conductive film 103. Here, in the scattering reflection type display 120 of FIG. 1, defects in the microcapsule layer 104 can be inspected by connecting conducting wires to the transparent conductive films 103 and 107 and applying an inspection voltage. .

  Therefore, when the scattering reflection type information display device 500 shown in FIG. 4 is manufactured, the microcapsule layer 104 is manufactured at the stage of manufacturing the scattering reflection type display body 120 of FIG. 1 before the color filter 401 and the pixel electrode 201 are manufactured. In addition, defects in the adhesive layer 105 adjacent to the microcapsule layer 104, the transparent conductive film 103, and the receiving layer 102 can be inspected. Therefore, when defects are generated in the microcapsule layer 104, the adhesive layer 105, the transparent conductive film 103, and the receiving layer 102, the defective microcapsule layer 104 or the adhesive layer is bonded before the pixel electrode 201 is bonded. The agent layer 105, the transparent conductive film 103, and the receiving layer 102 can be removed.

  As a result, it is possible to avoid useless work such as manufacturing the information display device 500 using the defective microcapsule layer 104, the adhesive layer 105, the transparent conductive film 103, and the receiving layer 102, and the pixel electrode 201 or the like. It is possible to avoid wasting the color filter 401, and manufacturing costs can be reduced.

  At this time, the transparent conductive film 103 and the pixel electrode 201 are formed so as to sandwich the microcapsule layer 104 that is a display medium layer, and then the color filter 401 is formed on the receiving layer 102. As described above, since it is not necessary to bond the substrate on which the color filter is formed and the substrate on which the pixel electrode is formed, it is difficult to attach the color filter and the pixel electrode so that the color filter and the pixel electrode face each other. There is no need to do. Conversely, since the color filter 401 can be formed directly on the receiving layer 102, alignment can be performed more easily, that is, alignment can be performed with high accuracy.

  In the above embodiment, when the color filter 401 is formed on the receiving layer 102, printing is performed by an ink jet printer. However, the present invention is not limited to this. For example, a plurality of colored layers can be formed by photolithography, or can be performed by screen printing or flexographic printing. The plurality of colors are not limited to the three colors of Red, Green, and Blue, and three colors of Cyan, Magenta, and Yellow can be used, or these colors can be used in combination.

  Moreover, in the said embodiment, an electrode pattern can be made into the various shapes corresponding to a pixel. Moreover, a segment electrode may be sufficient.

  Note that the present invention cannot be applied to a conventional LCD such as a TN system or STN system. This is because these display media are quasi-liquid and it is impossible to provide a transparent conductive film on the surface thereof. On the other hand, in the electrophoretic method, particularly the microcapsule type electrophoretic method, since the medium itself is solid, a transparent conductive film and a receiving layer can be directly formed on the medium, and a color filter can be easily formed on the surface. Therefore, it is suitable for the present invention.

  When a predetermined voltage is applied between the pixel electrode 201 and the transparent conductive film 103 of the thus produced scattering reflection type information display device 500, good white, black, red, green, blue, and other colors are displayed. I can confirm that I can do it.

  In addition, although the scattering reflection type information display apparatus 500 in the said embodiment deform | transformed with temperature and stress, it was confirmed that the positional relationship between the pixel electrode 201 and the color filter 401 does not change.

  Further, it was confirmed that there was no color development defect due to a change in electrical resistance value due to the rupture of the transparent conductive film 103.

  Note that a transparent reinforcing layer 452 for reinforcing the transparent conductive film 103 may be provided between the receiving layer 102 and the transparent conductive film 103.

  In the scattering reflection type information display device 500 according to the embodiment of the present invention, a glass substrate is used as the back plate 202. As the back plate 202, a polycarbonate resin, a polyester resin, a methacrylic resin, a styrene resin is used. Resin substrates such as resin, polyvinyl chloride resin, polyolefin resin, and polyamide resin can also be applied.

DESCRIPTION OF SYMBOLS 101 ... Substrate containing a soluble component, 102 ... Receptive layer, 103 ... Transparent conductive film (first transparent conductive film), 104 ... Microcapsule layer (display medium layer), 105 ... Adhesive layer, 106 ... Silicone release agent Layer (release agent layer), 107 ... transparent conductive film (second transparent conductive film), 108 ... PET film (first substrate), 109 ... microcapsule, 120 ... scattering reflection display, 121 ... first , 122 ... second laminate, 123 ... third laminate, 124 ... fourth laminate, 201 ... pixel electrode, 202 ... back plate (second substrate), 301 ... sealing agent, 401 ... color filter, 402 ... surface protective layer, 500 ... information display device, 501 ... open ink sheet (first laminate), 502 ... adhesive sheet (second laminate).

Claims (11)

A method of manufacturing an information display device for performing display by controlling a scattering reflection state of a display medium provided between the electrodes by a voltage applied between a pixel electrode or a segment electrode and a counter electrode,
A first member is formed by laminating a substrate containing a soluble component, a resin film for fixing a coloring component such as a pigment or a dye, a transparent conductive film, and a display medium layer made of a scattering reflection type display medium in this order. Generating step;
A step of laminating a first substrate, a conductive film, a release agent layer, and an adhesive layer in this order to produce a second member;
Adhering the first member and the second member so that the display medium layer and the adhesive layer are in contact with each other to generate a scattering reflection type display body;
An inspection step of changing a scattering reflection state of the display medium by applying an inspection voltage between the first conductive film and the second conductive film;
After the inspection step, a step of peeling the interface between the release agent layer and the adhesive layer;
Bonding the second substrate on which the pixel electrode or the segment electrode is formed so that the pixel electrode or the segment electrode is in contact with the adhesive layer;
Dissolving and removing the substrate containing the soluble component, exposing a resin film that fixes the colored component such as the pigment or dye, and
A method for manufacturing an information display device, comprising:   After the step of dissolving and removing the substrate containing the soluble component and exposing the resin film for fixing the colored component such as the pigment or dye, the resin film for fixing the colored component such as the pigment or dye exposed by the step 2. The information display device according to claim 1, further comprising a step of forming a color filter so as to face the pixel electrode or the segment electrode, and forming a transparent surface protective layer on the color filter. Method.   3. The information according to claim 1, wherein the substrate containing the soluble component is one of a polyvinyl alcohol resin and a starch resin that dissolves by immersing water in a water solution as a solution. 4. Manufacturing method of display device.   The method for producing an information display device according to claim 1 or 2, wherein the substrate containing the soluble component is a cellulose resin, and the enzyme contained in the solution is cellulase.   The display medium layer comprises an electrophoretic display medium comprising an electrophoretic liquid in which a solvent and at least two kinds of dispersible particles having different optical characteristics and charging characteristics are dispersed in a hollow structure. Item 5. A method for manufacturing an information display device according to any one of Items 1 to 4. A substrate containing a soluble component, a resin film for fixing a coloring component such as a pigment or a dye, a transparent conductive film, a display medium layer made of a scattering reflection type display medium, an adhesive layer, a release agent layer, A conductive film and a first substrate are laminated in this order, and is a scattering reflection type display body applied to an information display device,
A scattering / reflection type display body for an information display device, wherein a scattering / reflection state of the display medium is controlled by a voltage applied between the transparent conductive film and the conductive film.   7. The information display device according to claim 6, wherein the substrate containing the soluble component is one of a polyvinyl alcohol resin and a starch resin that dissolves by immersing water in the solution as a solution. Scatter reflection display.   The scattering reflection display for an information display device according to claim 6 or 7, wherein the substrate containing the soluble component is a cellulose resin, and the enzyme contained in the solution is cellulase.   7. The scattering reflection display for an information display device according to claim 6, wherein the display medium layer is made of a microcapsule type electrophoretic display medium. A transparent substrate having a second substrate having a pixel electrode or a segment electrode formed on one side, a display medium layer comprising an adhesive layer and a scattering reflection type display medium, and a counter electrode of the pixel electrode or the segment electrode; A film, a color filter formed on a resin film for fixing a coloring component such as a pigment or a dye, and a transparent surface protective layer are laminated in this order, and the adhesive layer covers the pixel electrode or the segment electrode. An information display device laminated on the second substrate,
An information display device, wherein information display is performed by controlling a scattering reflection state of the display medium by a voltage applied between the pixel electrode or segment electrode and the transparent conductive film as the counter electrode.   The information display device according to claim 10, wherein the display medium layer is made of a microcapsule type electrophoretic display medium.

Images