WO2007015356A1 - Display device and method of producing the same - Google Patents

Display device and method of producing the same Download PDF

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Publication number
WO2007015356A1
WO2007015356A1 PCT/JP2006/313879 JP2006313879W WO2007015356A1 WO 2007015356 A1 WO2007015356 A1 WO 2007015356A1 JP 2006313879 W JP2006313879 W JP 2006313879W WO 2007015356 A1 WO2007015356 A1 WO 2007015356A1
Authority
WO
WIPO (PCT)
Prior art keywords
substrate
water repellent
base material
liquid crystal
repellent film
Prior art date
Application number
PCT/JP2006/313879
Other languages
French (fr)
Japanese (ja)
Inventor
Kazuya Kaida
Original Assignee
Sharp Kabushiki Kaisha
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
Application filed by Sharp Kabushiki Kaisha filed Critical Sharp Kabushiki Kaisha
Publication of WO2007015356A1 publication Critical patent/WO2007015356A1/en

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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 
    • G02F1/13—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
    • 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
    • G02F1/133351—Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
    • 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
    • G02F1/133528—Polarisers
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • 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
    • G02F1/1341—Filling or closing of cells
    • 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
    • G02F1/1341—Filling or closing of cells
    • G02F1/13415—Drop filling process

Definitions

  • the present invention relates to a display panel such as a liquid crystal panel (also referred to as a liquid crystal display panel) and an electochromic display panel, and a method for manufacturing the same.
  • a display panel such as a liquid crystal panel (also referred to as a liquid crystal display panel) and an electochromic display panel, and a method for manufacturing the same.
  • a liquid crystal panel generally has a structure in which two glass substrates are laminated in parallel through a certain minute gap and a liquid crystal material is filled in the gap. have.
  • a seal member forming step is performed. That is, as shown in FIG. 13, when a glass substrate 101 constituting a CF (Color Filter) substrate and a glass substrate 102 constituting a TFT (Thin Film Transistor) substrate are bonded, one of these two substrates is bonded. A plurality of seal members 103 are arranged on the surface. In the example of FIG. 13, the sealing member 103 is bonded and fixed to the surface of the glass substrate 101.
  • CF Color Filter
  • TFT Thin Film Transistor
  • the seal member 103 is formed in a frame shape so as to define a region that becomes a space for confining liquid crystal (hereinafter referred to as a liquid crystal cell), but is an enlarged plan view that is not a completely closed ring. As shown, one place is cut off as the inlet 116.
  • a liquid crystal cell space for confining liquid crystal
  • Glass substrates 101 and 102 are large-sized substrate base materials from which a plurality of liquid crystal panels can be cut out. That is, the seal member 103 is provided for each liquid crystal panel. For the seal member 103, a thermosetting resin or the like is generally applied.
  • a substrate bonding process is performed. That is, the glass substrates 101 and 102 are bonded through the seal member 103.
  • the seal member 103 is cured by heating.
  • a dividing step is performed.
  • the glass substrates 101 and 102 are divided together for each individual region surrounded by the seal member 103.
  • a plurality of bonded substrates 114 having liquid crystal cells 115 as shown in FIG. 14 are obtained.
  • a liquid crystal filling process is performed.
  • the bonded substrate board 114 is accommodated in a vacuum device (not shown), and both the inside and the outside of the liquid crystal cell 115 are in a vacuum state.
  • the inlet 116 of the seal member 103 is immersed in the liquid crystal material 104, and the inside of the vacuum apparatus is gradually returned to atmospheric pressure.
  • the liquid crystal material 104 enters the liquid crystal cell 115 due to the pressure difference between the inside and the outside of the liquid crystal cell 115 and the capillary phenomenon.
  • a sealing step is performed as shown in step S25 of FIG. That is, the sealing resin 105 which is an ultraviolet curing resin is applied to the injection port 116. Subsequently, the sealing resin 105 is cured by irradiating ultraviolet rays to obtain a bonded substrate 114 in which the liquid crystal material 104 is enclosed in the liquid crystal cell 115 as shown in FIG.
  • steps S26 to S31 in FIG. 17 the cleaning process of the bonded substrate board 114, the lighting inspection, the polarizing plate application process, the FPC connection process, the backlight and the case
  • the attachment process and the final point inspection process are performed for each of the divided bonded substrates 114 (each liquid crystal panel).
  • a liquid crystal panel is manufactured by the above steps.
  • the polarizing plate is cut and removed from the divided region of the large glass substrate, and the surface of the glass substrate is exposed in the divided region to leave the polarizing plate in the same shape as the liquid crystal cell. It is also known that the glass substrate is divided into liquid crystal cells in each region (see, for example, Patent Document 2).
  • Patent Document 1 JP-A-6-342139
  • Patent Document 2 JP 2004-4636
  • Patent Document 1 a force that allows the cell to be cut by making a cut in the polarizing plate in advance, even if the polarizing plate can be divided into cells by cutting, the substrate surface is exposed with a sufficient width. So, I can't apply the substrate cutting tool to the substrate surface.
  • the present invention has been made in view of such various points, and an object of the present invention is to reliably remove the polarizing plate together with the adhesive layer so that the substrate can be accurately divided. It is in. Means for solving the problem
  • a water repellent film is provided on a substrate, and a polarizing plate is attached to the surface of the water repellent film.
  • the display panel according to the present invention includes a first substrate, a second substrate overlapping the first substrate via a display medium layer, and the first substrate and the second substrate.
  • a display panel including a sealing member disposed so as to surround the display medium layer, wherein at least one of the first substrate and the second substrate repels the surface opposite to the surface on the liquid crystal layer side.
  • a water film is provided, and a polarizing plate is attached to the surface of the water repellent film via an adhesive layer.
  • the water repellent film is composed of a water-soluble fluorine-based material.
  • the display medium layer may be a liquid crystal layer.
  • a seal member is formed on the surface of the first substrate base material.
  • Forming a plurality of seal members in a ring shape and supplying a display medium to a region inside the seal member or a region of the second substrate base material corresponding to a region inside the seal member At least one of a process, a substrate laminating step of bonding the first substrate base material and the second substrate base material to form a bonded substrate, and the first substrate base material and the second substrate base material
  • the water repellent film is formed by cleaning at least one of the first substrate base material and the second substrate base material with cleaning water mixed with a water repellent material. It is preferable to do.
  • the pressure-sensitive adhesive roller having a water-repellent material dispersed on the pressure-sensitive adhesive surface is rolled onto at least one of the first substrate base material and the second substrate base material.
  • a water repellent film may be formed!
  • the removing step it is desirable to cut off the polarizing plate and the adhesive layer with a predetermined width.
  • the display medium may be a liquid crystal material!
  • a water repellent film is provided on at least one of the first substrate and the second substrate, and a polarizing plate is attached to the surface of the water repellent film via an adhesive layer, the water repellent film, the adhesive layer, Are easily separated from each other at the interface. That is, the adhesive layer can be reliably removed together with the polarizing plate from the first substrate and the second substrate.
  • a plurality of sealing members are formed in an annular shape on the surface of the first substrate base material in the sealing member forming step.
  • a display medium such as a liquid crystal material is supplied to an area inside the seal member or an area of the second substrate base material corresponding to the area.
  • the substrate bonding step the first substrate base material and the second substrate base material are bonded together to form a bonded substrate.
  • the water repellent film forming step a water repellent film is formed on at least one of the first substrate base material and the second substrate base material.
  • the polarizing plate attaching step the polarizing plate is attached to the surface of the water repellent film through an adhesive layer.
  • part of the polarizing plate is removed together with the surface force of the water repellent film together with the adhesive layer.
  • the polarizing plate and the pressure-sensitive adhesive layer are preferably cut out with a predetermined width. At this time, since the water repellent film and the adhesive layer are easily separated from each other, the adhesive layer is surely removed.
  • the bonded substrate is cut in the region where the polarizing plate is removed, thereby dividing the bonded substrate into a plurality of display panel shapes.
  • the display panel is manufactured as described above.
  • the water repellent film is formed on the substrate, and the polarizing plate is attached to the surface of the water repellent film via the adhesive layer. Can be removed. Therefore, after the polarizing plate is pasted together on a large substrate base material, the base substrate base material can be accurately divided, so that the display panel can be manufactured efficiently.
  • FIG. 1 is an enlarged cross-sectional view showing a part of a liquid crystal panel of Embodiment 1.
  • FIG. 2 is a side view showing the appearance of the liquid crystal panel.
  • FIG. 3 is a perspective view showing glass substrate base materials bonded together.
  • FIG. 4 is an enlarged cross-sectional view showing a common transition electrode.
  • FIG. 5 is an enlarged plan view showing a part of the liquid crystal panel.
  • FIG. 6 is a perspective view schematically showing a substrate cleaning apparatus.
  • FIG. 7 is an enlarged sectional view showing a glass substrate base material on which a water repellent film is formed.
  • FIG. 8 is a perspective view showing a polarizing plate and an adhesive layer removed by a blade.
  • FIG. 9 is a perspective view showing a bonded substrate in which a band-like region is formed.
  • FIG. 10 is a perspective view showing a plurality of divided liquid crystal panels.
  • FIG. 11 is a flowchart showing a manufacturing process of a liquid crystal panel.
  • FIG. 12 is a perspective view schematically showing a polarizing plate sticking apparatus in another embodiment.
  • FIG. 13 is a perspective view showing a conventional glass substrate base material bonded to each other.
  • FIG. 14 is a plan view showing a conventional bonded substrate.
  • FIG. 15 is an explanatory view showing a bonded substrate in a conventional liquid crystal filling process.
  • FIG. 16 is a plan view showing a laminated substrate filled with a conventional liquid crystal material.
  • FIG. 17 is a flowchart showing manufacturing steps of a conventional liquid crystal panel. Explanation of symbols
  • FIG. 1 is an enlarged side sectional view showing the liquid crystal panel 1.
  • Fig. 2 is a side view schematically showing the appearance of the liquid crystal panel 1.
  • the illustration of the gap between the substrates is omitted.
  • the liquid crystal panel 1 is disposed so as to face a TFT substrate 2 on which a plurality of TFTs (not shown) as switching elements are formed, and to be opposed to the TFT substrate 2.
  • a CF substrate 3 on which a filter (not shown) or the like is formed, and a liquid crystal layer 4 that is a display medium layer provided between the CF substrate 3 and the TFT substrate 2 are provided.
  • the TFT substrate 2 includes a glass substrate 11 as a first substrate and a polarizing plate 13 provided on the opposite side of the glass substrate 11 from the liquid crystal layer 4 side.
  • the CF substrate 3 has a glass substrate 12 as a second substrate and a polarizing plate 14 provided on the side of the glass substrate 12 opposite to the liquid crystal layer 4 side. That is, the glass substrate 12 overlaps the glass substrate 11 with the liquid crystal layer 4 interposed therebetween.
  • the TFT substrate 2 includes a terminal portion 19 that is a region in which only the glass substrate 11 protrudes without the glass substrate 11 and the glass substrate 12 overlapping.
  • the terminal portion 19 is an area for connecting the FPC 18.
  • the liquid crystal layer 4 is provided inside the liquid crystal cell 20 defined by the glass substrates 11 and 12 and the annular seal member 15 interposed between the glass substrates 11 and 12 in a plan view. It is configured by enclosing liquid crystal material.
  • the seal member 15 is disposed so as to continuously surround the entire circumference of the liquid crystal layer 4 between the glass substrates 11 and 12.
  • “surrounding the entire circumference continuously” means surrounding the circumference completely in an annular shape.
  • the glass substrate 11 is provided with a water repellent film 21 on the side opposite to the surface on the liquid crystal layer 4 side, and the surface of the water repellent film 21 is polarized via an adhesive layer 23.
  • Board 13 is pasted.
  • a water repellent film 22 is provided on the side opposite to the surface on the liquid crystal layer 4 side, and a polarizing plate 14 is attached to the surface of the water repellent film 22 via an adhesive layer 24.
  • the polarizing plates 13 and 14 are attached to the glass substrates 11 and 12 through the water-repellent films 21 and 22, respectively.
  • the water repellent films 21 and 22 are made of, for example, a water-soluble fluorine-based material.
  • a sealing member forming step a display medium supplying step, a substrate laminating step, a water repellent film forming step, and a polarizing plate pasting step, The removal process and the division process are included.
  • a plurality of TFTs, pixel electrodes, and the like are pattern-formed on a glass substrate base material 31 that is a first substrate base material.
  • the glass substrate base material 31 is an aggregate of the glass substrates 11 constituting the TFT substrate 2.
  • CF, a common electrode, etc. are pattern-formed with respect to the glass substrate base material 32 which is the 2nd substrate base material.
  • the glass substrate base material 32 is an aggregate of the glass substrates 12 constituting the CF substrate 3.
  • a seal member forming step is performed.
  • the sealing member forming step for example, as shown in FIG. 3, a plurality of sealing members 15 are formed in a ring shape on the surface of the glass substrate base material 31.
  • the sealing member 15 may be printed by screen printing or may be applied by a small syringe syringe, for example.
  • the seal member 15 is disposed so as to continuously surround the entire circumference of the region where the liquid crystal layer 4 is to be formed, and is formed in, for example, a rectangular shape. That is, the seal member 15 is not cut unlike the conventional seal member 103 shown in FIG.
  • the present invention is particularly effective when a large glass substrate base material is divided to produce a large number of medium-sized or small-sized liquid crystal panels.
  • the seal member 15 is preferably a photocurable resin having heat resistance. It is also preferable to apply a thermosetting type resin or a type of resin that is cured by a combination of light and heat as the sealing member 15.
  • the substrate base material forming the sealing member is not limited to the glass substrate base material 31.
  • the sealing member 15 may be formed on one surface of the glass substrate base material 31 and the glass substrate base material 32.
  • a display medium supply process is performed.
  • a liquid crystal material that is a display medium is supplied to an area inside each seal member 15.
  • a liquid crystal material 33 is dropped on the inner region of each seal member 15.
  • the liquid crystal material 33 is dropped by an amount corresponding to the volume of the liquid crystal cell 20 and is accumulated inside the seal member 15.
  • the liquid crystal material may be dropped and supplied to a predetermined region of the glass substrate base material 32 corresponding to the region inside the seal member 15 in the glass substrate base material 31.
  • a substrate bonding process is performed.
  • the glass substrate base material 31 and the glass substrate base material 32 are bonded together to form a bonded substrate.
  • the glass substrate base material 32 is also superimposed on the glass substrate base material 31 in a vacuum state.
  • the sealing member 15 is cured by irradiating light such as ultraviolet rays and heating as necessary.
  • the liquid crystal material 33 is sealed inside the liquid crystal cell 20 to obtain a bonded substrate 34.
  • An electrode for applying a voltage to the liquid crystal layer 4 is formed in advance on each of the glass substrate base materials 31 and 32.
  • the electrode wiring can be taken out to the outside at the terminal portion 19 provided concentrated on only one TFT substrate 2. Therefore, it is necessary to draw out electrode wiring from the CF substrate 3 side to the TFT substrate 2 side having the terminal portions 19. Therefore, a common transition electrode is preferably used.
  • the “common transfer electrode” is an electrode that is sandwiched between the glass substrates in order to allow the electrodes on the surfaces of the glass substrates facing each other with the liquid crystal layer 4 interposed therebetween.
  • FIGS. 4 and 5 show an enlarged plan view of a part of one liquid crystal panel.
  • a plurality of common electrode pads 36 are formed on the glass substrate base materials 31 and 32 inside the seal member 15.
  • a granular common transition electrode 37 is formed in the common electrode pad 36.
  • One end of the wiring is connected to the common electrode pad 36, and the other end of the wiring extends across the seal member 15 toward the outer edge of the liquid crystal panel.
  • the common transition electrode 37 includes a granular conductive particle 38 in the center, and has a structure in which the outer surface of the conductive particle 38 is covered with a conductive material 39.
  • the common transition electrode 37 is sandwiched between the upper and lower common electrode pads 36 by pressing the glass substrate base materials 31 and 32 together.
  • the upper and lower glass substrate base materials 31 and 32 face each other through the conductive particles 38, and the conductive material 39 that was crushed and deformed surrounded the conductive particles 38. Become a shape. In this way, conduction is established between the electrode on the surface of the glass substrate base material 31 and the electrode on the surface of the glass substrate base material 32.
  • FIG. 4 is shown to show a state in which the common transition electrode 37 is crushed, and is a cross-sectional view of a configuration example different from FIG. 1 for the liquid crystal panel.
  • the pressure due to the atmospheric pressure is used as the bonding pressure by returning the pressure to the atmospheric pressure in a state where the glass substrate base materials 31, 32 are superposed in a vacuum.
  • the sealing member 15 is cured by irradiating with ultraviolet rays or heating in a state where the bonding pressure acts.
  • a water repellent film forming step is performed.
  • the water repellent films 21 and 22 are formed on the surface opposite to the liquid crystal layer 4 side with respect to the glass substrate base materials 31 and 32.
  • the water repellent film forming step is performed simultaneously with the cleaning step.
  • the cleaning step as shown in FIG. 6, the large bonded substrate 34 obtained in the substrate bonding step is cleaned in advance by the substrate cleaning device 43 before the polarizing plates 13 and 14 are bonded.
  • the bonded substrate 34 is cleaned with cleaning water by the substrate cleaning device 43, and the water-repellent films 21 and 22 are formed on the surface thereof.
  • the surface of the bonded substrate 34 is inevitably formed in an uneven shape in the manufacturing process.
  • the surface roughness of glass substrates manufactured by glass manufacturers is about 0.01 m or less.
  • the surface roughness is about 0.02 / zm.
  • a polarizing plate pasting step is performed.
  • the polarizing plates 13 and 14 are attached to the surfaces of the water-repellent films 21 and 22 through the adhesive layers 23 and 24, respectively.
  • the polarizing plates 13 and 14 are attached by, for example, sequentially drawing out a roll-shaped polarizing film and supplying it to the bonding substrate 34.
  • a polarizing film cut to approximately the same size as the bonding substrate 34 may be bonded, and a polarizing film cut to an area larger than at least one liquid crystal cell is bonded. You can do it.
  • a part of the polarizing plates 13 and 14 is removed together with the surface strength of the water-repellent films 21 and 22 together with the adhesive layers 2 and 24.
  • the polarizing plates 13 and 14 are removed by the blade 44 as shown in FIG. 8 which is an enlarged perspective view.
  • the blade 44 is formed, for example, in a concave cross section.
  • the adhesive layers 23 and 24 are cut and lifted by the blade 44 together with the polarizing plates 13 and 14 on the water-repellent films 21 and 22, and a part of the adhesive layers 23 and 24 is formed on the glass substrate base materials 31 and 32. It peels without remaining.
  • the water-repellent films 21, 22 and the adhesive layers 23, 24 are separated by the bottom edge of the blade 44, and the polarizing plates 13, 14 and the adhesive layers 23, 24 are determined by the both sides of the blade edge. It is excised with the width of.
  • a strip-like region 45 is formed as a break between the polarizing plates 13 and 14, in which the surfaces of the glass substrates 11 and 12 are exposed in a strip shape.
  • the band-like region 45 is preferably formed in a lattice shape, for example.
  • the same blade or the blade having the same shape may be caused to travel a plurality of times. By doing so, it is also possible to form a band-like region 45 having a width larger than the width of the blade.
  • the peeling means for peeling the polarizing plates 13 and 14 and the adhesive layers 23 and 24 is not limited to the blade shape as shown in FIG. Any material having a spatula shape capable of peeling off the polarizing plate from the glass substrate base materials 31 and 32 may be used.
  • a dividing step is performed.
  • the bonded substrate 34 is cut into the strip-shaped regions 45 where the polarizing plates 13 and 14 are removed, thereby dividing the bonded substrate 34 into a plurality of display panel shapes. That is, the bonded substrate 34 is divided for each liquid crystal cell 20 in a state where the polarizing plates 13 and 14 divided by the blade 44 are attached.
  • Fig. 9 which is an enlarged perspective view
  • the cutting line 46 is moved along the belt-like region 45 by moving a tool for cutting glass (not shown), so that the cutting line 46 is formed on the glass substrate base material of the belt-like region 45. Formed on 31, 32.
  • the bonded substrate 34 is divided into a plurality of liquid crystal panels 1 by growing cracks in the dividing line 46.
  • the cutting tool 44 and the tool for cutting the glass substrate base materials 31, 32 are assembled into one unit, the unit can be run on the glass substrate base materials 31, 32, The removal step and the division step can be performed simultaneously.
  • the tool for cutting the glass substrate base materials 31, 32 is not limited. Further, in the example shown in FIG. 10, the power displayed on the liquid crystal panel 1 is only eight. This number is not limited to eight and can be appropriately set. For example, the liquid crystal panel 1 may be divided into several hundreds.
  • steps S17 to S20 in FIG. 11 are divided into each of the divided liquid crystal panels 1 through the lighting inspection process, the FPC connection process, the backlight and case mounting process, and the final point inspection process. Do it every time.
  • the liquid crystal panel 1 is manufactured through the above steps.
  • the water repellent film 21, 22 such as a water-soluble fluorine-based material is provided in advance on the surface of the glass substrate base material 31, 32 (bonded substrate 34), and the water repellent film 21 Since the polarizing plates 13 and 14 are attached to the surface of the adhesive layers 23 and 24 via the adhesive layers 23 and 24, the adhesive layers 23 and 24 and the polarizing layer are formed at the interface between the water-repellent films 21 and 22 and the adhesive layers 23 and 24. The plates 13 and 14 can be reliably separated and removed.
  • the surfaces of the glass substrate base materials 31 and 32 are formed by the fine particles of the water repellent films 21 and 22.
  • the pressure-sensitive adhesive layers 23 and 24 are easily peeled off by being highly planarized and imparting water repellency to the glass substrate base materials 31 and 32.
  • the antifouling effect can be obtained by forming the water-repellent films 21 and 22 on the surfaces of the glass substrate base materials 31 and 32 after cleaning. Moreover, even if dust is contaminated on the surfaces of the water-repellent films 21 and 22, these can be easily removed. Therefore, the polarizing plates 13 and 14 can be stuck so that impurities such as dust are not interposed between the water repellent films 21 and 22 and the polarizing plates 13 and 14.
  • the glass substrate base materials 31, 32 can be reliably divided. Therefore, the dividing process of the glass substrate base materials 31 and 32 can be performed at a relatively late stage of the manufacturing process after the polarizing plates 13 and 14 are attached. As a result, many processes can be performed at once in the state of the large-sized glass substrate base materials 31 and 32, so that the production efficiency of the liquid crystal panel and the liquid crystal display device can be dramatically improved. In other words, the manufacturing time per LCD panel can be greatly reduced.
  • step S23 the dividing process is performed in step S23, which is a relatively early stage of the manufacturing process. Accordingly, the processes that can be collectively processed as a whole of the glass substrate base materials 31 and 32 are limited to the seal member forming process and the substrate bonding process in steps S21 and S22, and the other processes in steps S24 to S31. This must be done individually for each of the plurality of bonded substrates after the division, which is very laborious.
  • step S16 the dividing process is performed in step S16, which is a relatively slow stage of the manufacturing process. Therefore, many steps such as the sealing member forming process, the display medium supplying process, the substrate bonding process, the cleaning process (water repellent film forming process), and the polarizing plate applying process in steps S11 to S16 are performed. Can be processed as a whole for 31, 32.
  • the present invention may be configured as follows for the first embodiment.
  • the water-repellent film forming step is performed in the cleaning step, but the water-repellent film forming step may be performed over the polarizing plate attaching step.
  • the polarizing plate pasting apparatus 50 for pasting the polarizing plates 13 and 14 adheres the dust on the surface of the laminated substrate 34 before the polarizing plates 13 and 14 are pasted. It is removed by a roller (not shown). Therefore, by spraying a water-repellent material such as a water-soluble fluorine-based material on the adhesive roller and rolling the adhesive roller on the surface of the laminated substrate 34, the glass substrate mother is the same as in the first embodiment. Water repellent films 21 and 22 can be formed on the surfaces of the materials 31 and 32.
  • the force of forming the water-repellent films 21, 22 and the polarizing plates 13, 14 on both the glass substrate base materials 31, 32 is not limited to this. May be formed on at least one of these glass substrate base materials 31 and 32.
  • the glass substrate base materials 31, 32 are not provided with a water repellent film between the polarizing plates. It is preferable to provide a water repellent film only between 32 and the lowermost polarizing plate. This is because if the water-repellent film is interposed between the polarizing plates, the properties of the polarizing plate are deteriorated.
  • the first substrate base material and the second substrate base material have been described as “glass substrate base materials”.
  • the first substrate base material and the second substrate base material are glass substrates.
  • the base material not only the base material but also a base material made of other materials such as plastic, for example.
  • the power described by taking the liquid crystal panel as an example of the display panel is not limited to this.
  • the present invention is similarly applied to other display panels such as an electochromic display panel. Can do.
  • the present invention is useful for display panels such as liquid crystal panels and electochromic display panels, and a method for manufacturing the same.
  • the polarizing plate is reliably removed together with the adhesive layer. Suitable for dividing the substrate accurately.

Abstract

A liquid crystal panel has a first substrate, a second substrate, and a seal member placed between the first substrate and the second substrate so as to surround a display medium layer. A water repelling film is located on the opposite side of the surface on the display medium layer side of at least either the first substrate or the second substrate. A polarization plate is adhered, with an adhesion layer sandwiched in between, to the front side of the water repelling film.

Description

明 細 書  Specification
表示装置及びその製造方法  Display device and manufacturing method thereof
技術分野  Technical field
[0001] 本発明は、液晶パネル (液晶表示パネルとも称する）及びエレクト口クロミック表示パ ネル等の表示パネル、及びその製造方法に関するものである。  The present invention relates to a display panel such as a liquid crystal panel (also referred to as a liquid crystal display panel) and an electochromic display panel, and a method for manufacturing the same.
背景技術  Background art
[0002] この種の表示パネルとして、例えば液晶パネルは、一般に、 2枚のガラス基板を一 定の微小なギャップを介して平行に重ねて貼合せ、そのギャップ内に液晶材料を充 填した構造を有している。  [0002] As a display panel of this type, for example, a liquid crystal panel generally has a structure in which two glass substrates are laminated in parallel through a certain minute gap and a liquid crystal material is filled in the gap. have.
[0003] 従来の液晶パネルの一般的な製造方法について、図 13〜図 17を参照して説明す る。まず、図 17のフローチャートにおけるステップ S21に示すように、シール部材形成 工程を行う。すなわち、図 13に示すように、 CF (Color Filter)基板を構成するガラス 基板 101と、 TFT(Thin Film Transistor)基板を構成するガラス基板 102とを貼り合 せる場合、これら 2枚の基板の一方に複数のシール部材 103を配置する。図 13の例 では、ガラス基板 101の表面にシール部材 103を接着固定している。シール部材 10 3は、液晶を閉じ込める空間（以下、液晶セルと称する）となる領域を規定するように 枠状に形成されているが、完全に閉じた環状ではなぐ拡大平面図である図 14に示 されるように 1ケ所が注入口 116として途切れた形状になって 、る。  [0003] A general method for manufacturing a conventional liquid crystal panel will be described with reference to FIGS. First, as shown in step S21 in the flowchart of FIG. 17, a seal member forming step is performed. That is, as shown in FIG. 13, when a glass substrate 101 constituting a CF (Color Filter) substrate and a glass substrate 102 constituting a TFT (Thin Film Transistor) substrate are bonded, one of these two substrates is bonded. A plurality of seal members 103 are arranged on the surface. In the example of FIG. 13, the sealing member 103 is bonded and fixed to the surface of the glass substrate 101. The seal member 103 is formed in a frame shape so as to define a region that becomes a space for confining liquid crystal (hereinafter referred to as a liquid crystal cell), but is an enlarged plan view that is not a completely closed ring. As shown, one place is cut off as the inlet 116.
[0004] ガラス基板 101, 102は、液晶パネルが複数切り出せるような大きなサイズの基板 母材である。すなわち、シール部材 103は各液晶パネル毎に設けられている。シー ル部材 103には、熱硬化性榭脂等が一般に適用される。  [0004] Glass substrates 101 and 102 are large-sized substrate base materials from which a plurality of liquid crystal panels can be cut out. That is, the seal member 103 is provided for each liquid crystal panel. For the seal member 103, a thermosetting resin or the like is generally applied.
[0005] 次に、図 17のステップ S22に示すように、基板貼合せ工程を行う。すなわち、上記 ガラス基板 101, 102をシール部材 103を介して貼り合せる。シール部材 103は加熱 によって硬化させる。  Next, as shown in step S22 of FIG. 17, a substrate bonding process is performed. That is, the glass substrates 101 and 102 are bonded through the seal member 103. The seal member 103 is cured by heating.
[0006] その後に、図 17のステップ S23に示すように、分割工程を行う。分割工程では、シ 一ル部材 103で囲まれた個別の領域毎にガラス基板 101, 102を一括して分断する 。こうして、図 14に示すように液晶セル 115を備えた複数の貼合せ基板 114が得られ る。 [0006] After that, as shown in step S23 of FIG. 17, a dividing step is performed. In the dividing step, the glass substrates 101 and 102 are divided together for each individual region surrounded by the seal member 103. In this way, a plurality of bonded substrates 114 having liquid crystal cells 115 as shown in FIG. 14 are obtained. The
[0007] 続いて、図 17のステップ S24に示すように、液晶充填工程を行う。この工程では、 貼合せ基板 114を真空装置（図示省略)の内部に収容し、液晶セル 115の内部及び 外部共に真空状態とする。その状態で、図 15に示すように、シール部材 103の注入 口 116を液晶材料 104に浸し、真空装置の内部を徐々に大気圧に戻す。すると、液 晶セル 115の内部と外部との圧力差と、毛細管現象とによって、液晶材料 104が液 晶セル 115の内部に入っていく。  Subsequently, as shown in step S24 of FIG. 17, a liquid crystal filling process is performed. In this step, the bonded substrate board 114 is accommodated in a vacuum device (not shown), and both the inside and the outside of the liquid crystal cell 115 are in a vacuum state. In this state, as shown in FIG. 15, the inlet 116 of the seal member 103 is immersed in the liquid crystal material 104, and the inside of the vacuum apparatus is gradually returned to atmospheric pressure. Then, the liquid crystal material 104 enters the liquid crystal cell 115 due to the pressure difference between the inside and the outside of the liquid crystal cell 115 and the capillary phenomenon.
[0008] こうして、液晶セル 115の内部が液晶材料 104で満たされた後に、図 17のステップ S25に示すように、封止工程を行う。すなわち、注入口 116に紫外線硬化榭脂である 封止榭脂 105を塗布する。続いて、紫外線を照射して封止榭脂 105を硬化させ、図 16に示すように液晶材料 104を液晶セル 115の内部に封入した貼合せ基板 114を 得る。  [0008] Thus, after the inside of the liquid crystal cell 115 is filled with the liquid crystal material 104, a sealing step is performed as shown in step S25 of FIG. That is, the sealing resin 105 which is an ultraviolet curing resin is applied to the injection port 116. Subsequently, the sealing resin 105 is cured by irradiating ultraviolet rays to obtain a bonded substrate 114 in which the liquid crystal material 104 is enclosed in the liquid crystal cell 115 as shown in FIG.
[0009] その後、詳細な説明は省略するが、図 17のステップ S26〜S31〖こおいて、貼合せ 基板 114の洗浄工程、点灯検査、偏光板貼付工程、 FPC接続工程、バックライト及 びケースの取付工程、及び最終点等検査工程を、分割された各貼合せ基板 114毎（ 各液晶パネル毎）に行う。以上の各工程によって液晶パネルを製造する。  [0009] Then, although detailed explanation is omitted, in steps S26 to S31 in FIG. 17, the cleaning process of the bonded substrate board 114, the lighting inspection, the polarizing plate application process, the FPC connection process, the backlight and the case The attachment process and the final point inspection process are performed for each of the divided bonded substrates 114 (each liquid crystal panel). A liquid crystal panel is manufactured by the above steps.
[0010] このように、従来の液晶パネル (特に、携帯電話等に適用されるような小型の液晶 パネル)の製造にぉ 、ては、 1枚の大判のガラス基板 (基板母材)を分割して数百個 の液晶パネルが製造される。その場合、上述のような従来技術では、分割された各 液晶パネル毎に偏光板の貼付工程や検査工程を行うようにして ヽたため、処理のェ 数が大幅に増大して膨大な処理時間が力かってしまうという問題がある。  [0010] In this way, when manufacturing conventional liquid crystal panels (especially small liquid crystal panels that are applied to mobile phones, etc.), one large glass substrate (substrate base material) is divided. Hundreds of liquid crystal panels are manufactured. In that case, in the conventional technology as described above, the polarizing plate sticking process and the inspection process are performed for each divided liquid crystal panel, so that the processing time is significantly increased and the processing time is enormous. There is a problem that it is hard.
[0011] この問題に対して、液晶セルとなるべき領域が一列に並んだ短冊状の基板に、予 め切り込みをいれた偏光板を一括して貼り付けた後、各液晶セル毎に分断すること が提案されている (例えば、特許文献 1等参照)。  [0011] To solve this problem, a polarizing plate with pre-cuts is pasted together on a strip-shaped substrate in which regions to be liquid crystal cells are arranged in a line, and then divided for each liquid crystal cell. This has been proposed (see, for example, Patent Document 1).
[0012] また、大判のガラス基板の分断領域から偏光板を切断除去し、その分断領域にお いてガラス基板の表面を露出させて液晶セルと同じ形状に偏光板を残した後、露出 した分断領域にぉ 、てガラス基板を液晶セル毎に分割することも知られて 、る（例え ば、特許文献 2等参照)。 特許文献 1：特開平 6 - 342139号公報 [0012] In addition, the polarizing plate is cut and removed from the divided region of the large glass substrate, and the surface of the glass substrate is exposed in the divided region to leave the polarizing plate in the same shape as the liquid crystal cell. It is also known that the glass substrate is divided into liquid crystal cells in each region (see, for example, Patent Document 2). Patent Document 1: JP-A-6-342139
特許文献 2 :特開 2004— 4636号公報  Patent Document 2: JP 2004-4636
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0013] ところで、偏光板が予め貼り付けた大判の基板 (ガラス基板)を各セル (液晶セル） 毎に分断するためには、基板を分断するツールが走行できる幅分の偏光板を除去す る必要がある。 [0013] By the way, in order to divide a large-sized substrate (glass substrate) on which a polarizing plate is attached in advance into each cell (liquid crystal cell), the polarizing plate is removed by a width that allows the tool that divides the substrate to travel. It is necessary to
[0014] 上記特許文献 1では、予め切り込みを偏光板に入れることによってセルィ匕を行うよう にしている力 切込みによって偏光板をセル毎に分割できても、基板表面が十分な 幅で露出して 、な 、ので、基板分断ツールを基板表面に当てることができな 、。  [0014] In Patent Document 1 described above, a force that allows the cell to be cut by making a cut in the polarizing plate in advance, even if the polarizing plate can be divided into cells by cutting, the substrate surface is exposed with a sufficient width. So, I can't apply the substrate cutting tool to the substrate surface.
[0015] 一方、特許文献 2に記載の方法により表示パネルの製造を試みたところ、偏光板は 除去できても、偏光板と基板とを接着していた粘着層が基板に残留する場合があり、 この残留した粘着層が、その後のツールによる基板分断を妨げてしまうという問題が 判明した。  [0015] On the other hand, when a display panel was manufactured by the method described in Patent Document 2, an adhesive layer that adhered the polarizing plate and the substrate might remain on the substrate even though the polarizing plate could be removed. The problem was that the remaining adhesive layer hindered subsequent substrate cutting by a tool.
[0016] 本発明は、斯カる諸点に鑑みてなされたものであり、その目的とするところは、偏光 板を粘着層と共に確実に除去して、基板を正確に分割し得るようにすることにある。 課題を解決するための手段  The present invention has been made in view of such various points, and an object of the present invention is to reliably remove the polarizing plate together with the adhesive layer so that the substrate can be accurately divided. It is in. Means for solving the problem
[0017] 上記の目的を達成するために、この発明では、基板に撥水膜を設けると共に、その 撥水膜の表面に偏光板を貼り付けるようにした。  In order to achieve the above object, according to the present invention, a water repellent film is provided on a substrate, and a polarizing plate is attached to the surface of the water repellent film.
[0018] 具体的に、本発明に係る表示パネルは、第 1基板と、前記第 1基板に表示媒体層を 介して重なり合う第 2基板と、前記第 1基板と前記第 2基板との間において前記表示 媒体層を取り囲むように配置されたシール部材とを備えた表示パネルであって、前記 第 1基板及び前記第 2基板の少なくとも一方には、前記液晶層側の表面とは反対側 に撥水膜が設けられ、前記撥水膜の表面には、粘着層を介して偏光板が貼り付けら れている。  [0018] Specifically, the display panel according to the present invention includes a first substrate, a second substrate overlapping the first substrate via a display medium layer, and the first substrate and the second substrate. A display panel including a sealing member disposed so as to surround the display medium layer, wherein at least one of the first substrate and the second substrate repels the surface opposite to the surface on the liquid crystal layer side. A water film is provided, and a polarizing plate is attached to the surface of the water repellent film via an adhesive layer.
[0019] 前記撥水膜は、水溶性フッ素系材料により構成されて 、ることが好ま 、。  [0019] Preferably, the water repellent film is composed of a water-soluble fluorine-based material.
[0020] 前記表示媒体層は液晶層であってもよ 、。 [0020] The display medium layer may be a liquid crystal layer.
[0021] また、本発明に係る表示パネルの製造方法は、第 1基板母材の表面にシール部材 を環状に複数形成するシール部材形成工程と、前記シール部材の内側の領域、又 は、前記シール部材の内側の領域に対応する第 2基板母材の領域に表示媒体を供 給する表示媒体供給工程と、前記第 1基板母材と前記第 2基板母材とを貼り合せて 貼合せ基板を形成する基板貼合せ工程と、前記第 1基板母材及び前記第 2基板母 材の少なくとも一方に、撥水膜を形成する撥水膜形成工程と、前記撥水膜の表面に 対し、粘着層を介して偏光板を貼り付ける偏光板貼付工程と、前記偏光板の一部を 、前記撥水膜の表面から前記粘着層と共に除去する除去工程と、前記貼合せ基板 を前記偏光板が除去された領域において切断することにより、該貼合せ基板を複数 の表示パネルの形状に分割する分割工程とを含む。 [0021] Further, in the method for manufacturing a display panel according to the present invention, a seal member is formed on the surface of the first substrate base material. Forming a plurality of seal members in a ring shape and supplying a display medium to a region inside the seal member or a region of the second substrate base material corresponding to a region inside the seal member At least one of a process, a substrate laminating step of bonding the first substrate base material and the second substrate base material to form a bonded substrate, and the first substrate base material and the second substrate base material A water repellent film forming step of forming a water repellent film, a polarizing plate attaching step of attaching a polarizing plate to the surface of the water repellent film via an adhesive layer, and a part of the polarizing plate, A removing step of removing together with the adhesive layer from the surface of the film, and a dividing step of dividing the bonded substrate into a plurality of display panel shapes by cutting the bonded substrate in a region where the polarizing plate is removed. including.
[0022] 前記撥水膜形成工程では、撥水性材料を混入させた洗浄水により、前記第 1基板 母材及び前記第 2基板母材の少なくとも一方を洗浄することによって、前記撥水膜を 形成することが好ましい。  [0022] In the water repellent film forming step, the water repellent film is formed by cleaning at least one of the first substrate base material and the second substrate base material with cleaning water mixed with a water repellent material. It is preferable to do.
[0023] 前記撥水膜形成工程では、撥水性材料が粘着面に散布された粘着ローラを、前記 第 1基板母材及び前記第 2基板母材の少なくとも一方に転動させることによって、前 記撥水膜を形成するようにしてもよ!ヽ。  [0023] In the water-repellent film forming step, the pressure-sensitive adhesive roller having a water-repellent material dispersed on the pressure-sensitive adhesive surface is rolled onto at least one of the first substrate base material and the second substrate base material. A water repellent film may be formed!
[0024] 前記除去工程では、前記偏光板及び前記粘着層を所定の幅で切除することが望 ましい。  [0024] In the removing step, it is desirable to cut off the polarizing plate and the adhesive layer with a predetermined width.
[0025] 前記表示媒体は液晶材料であってもよ!/、。  [0025] The display medium may be a liquid crystal material!
[0026] 一作用  [0026] One action
次に、本発明の作用について説明する。  Next, the operation of the present invention will be described.
[0027] 第 1基板及び第 2基板の少なくとも一方に撥水膜が設けられ、その撥水膜の表面に 粘着層を介して偏光板が貼り付けられているので、撥水膜と粘着層とは、その界面に おいて互いに分離しやすくなる。つまり、粘着層を、第 1基板や第 2基板から偏光板と 共に確実に除去することが可能となる。  [0027] Since a water repellent film is provided on at least one of the first substrate and the second substrate, and a polarizing plate is attached to the surface of the water repellent film via an adhesive layer, the water repellent film, the adhesive layer, Are easily separated from each other at the interface. That is, the adhesive layer can be reliably removed together with the polarizing plate from the first substrate and the second substrate.
[0028] 表示パネルを製造する場合には、まず、シール部材形成工程にぉ 、て、第 1基板 母材の表面に複数のシール部材を環状に形成する。次に、表示媒体供給工程では 、前記シール部材の内側の領域、又は、その領域に対応する第 2基板母材の領域に 、液晶材料等の表示媒体を供給する。 [0029] 基板貼り合わせ工程では、第 1基板母材と第 2基板母材とを貼り合わせて、貼合せ 基板を形成する。また、撥水膜形成工程では、第 1基板母材及び第 2基板母材の少 なくとも一方に、撥水膜を形成する。その後、偏光板貼付工程において、撥水膜の表 面に粘着層を介して偏光板を貼り付ける。 When manufacturing a display panel, first, a plurality of sealing members are formed in an annular shape on the surface of the first substrate base material in the sealing member forming step. Next, in the display medium supply step, a display medium such as a liquid crystal material is supplied to an area inside the seal member or an area of the second substrate base material corresponding to the area. [0029] In the substrate bonding step, the first substrate base material and the second substrate base material are bonded together to form a bonded substrate. In the water repellent film forming step, a water repellent film is formed on at least one of the first substrate base material and the second substrate base material. Thereafter, in the polarizing plate attaching step, the polarizing plate is attached to the surface of the water repellent film through an adhesive layer.
[0030] 次に、除去工程では、偏光板の一部を、撥水膜の表面力も粘着層と共に除去する 。特に、偏光板及び粘着層は、所定の幅で切除することが望ましい。このとき、撥水 膜と粘着層とが互いに分離しやすくなつているため、粘着層は確実に除去される。そ の後、分割工程において、偏光板が除去された領域で貼合せ基板を切断すること〖こ より、貼合せ基板を複数の表示パネルの形状に分割する。以上により、表示パネルを 製造する。  [0030] Next, in the removing step, part of the polarizing plate is removed together with the surface force of the water repellent film together with the adhesive layer. In particular, the polarizing plate and the pressure-sensitive adhesive layer are preferably cut out with a predetermined width. At this time, since the water repellent film and the adhesive layer are easily separated from each other, the adhesive layer is surely removed. Thereafter, in the dividing step, the bonded substrate is cut in the region where the polarizing plate is removed, thereby dividing the bonded substrate into a plurality of display panel shapes. The display panel is manufactured as described above.
発明の効果  The invention's effect
[0031] 本発明によれば、基板に撥水膜を形成し、その撥水膜の表面に粘着層を介して偏 光板を貼り付けるようにしたので、基板力 偏光板及び粘着層を確実に除去すること ができる。したがって、大きな基板母材に一括して偏光板を貼り付けた後に、その基 板母材を正確に分割することができるため、表示パネルを効率よく製造することがで きる。  [0031] According to the present invention, the water repellent film is formed on the substrate, and the polarizing plate is attached to the surface of the water repellent film via the adhesive layer. Can be removed. Therefore, after the polarizing plate is pasted together on a large substrate base material, the base substrate base material can be accurately divided, so that the display panel can be manufactured efficiently.
図面の簡単な説明  Brief Description of Drawings
[0032] [図 1]図 1は、実施形態 1の液晶パネルの一部を拡大して示す断面図である。 FIG. 1 is an enlarged cross-sectional view showing a part of a liquid crystal panel of Embodiment 1.
[図 2]図 2は、液晶パネルの外観を示す側面図である。  FIG. 2 is a side view showing the appearance of the liquid crystal panel.
[図 3]図 3は、互いに貼り合わされるガラス基板母材を示す斜視図である。  FIG. 3 is a perspective view showing glass substrate base materials bonded together.
[図 4]図 4は、コモン転移電極を示す拡大断面図である。  FIG. 4 is an enlarged cross-sectional view showing a common transition electrode.
[図 5]図 5は、液晶パネルの一部を拡大して示す平面図である。  FIG. 5 is an enlarged plan view showing a part of the liquid crystal panel.
[図 6]図 6は、基板洗浄装置を模式的に示す斜視図である。  FIG. 6 is a perspective view schematically showing a substrate cleaning apparatus.
[図 7]図 7は、撥水膜が形成されたガラス基板母材を拡大して示す断面図である。  FIG. 7 is an enlarged sectional view showing a glass substrate base material on which a water repellent film is formed.
[図 8]図 8は、刃物により除去される偏光板及び粘着層を示す斜視図である。  FIG. 8 is a perspective view showing a polarizing plate and an adhesive layer removed by a blade.
[図 9]図 9は、帯状領域が形成された貼合せ基板を示す斜視図である。  FIG. 9 is a perspective view showing a bonded substrate in which a band-like region is formed.
[図 10]図 10は、分割された複数の液晶パネルを示す斜視図である。  FIG. 10 is a perspective view showing a plurality of divided liquid crystal panels.
[図 11]図 11は、液晶パネルの製造工程を示すフローチャート図である。 [図 12]図 12は、その他の実施形態における偏光板貼付装置を模式的に示す斜視図 である。 FIG. 11 is a flowchart showing a manufacturing process of a liquid crystal panel. FIG. 12 is a perspective view schematically showing a polarizing plate sticking apparatus in another embodiment.
[図 13]図 13は、従来の互いに貼り合わされるガラス基板母材を示す斜視図である。  FIG. 13 is a perspective view showing a conventional glass substrate base material bonded to each other.
[図 14]図 14は、従来の貼合せ基板を示す平面図である。  FIG. 14 is a plan view showing a conventional bonded substrate.
[図 15]図 15は、従来の液晶充填工程における貼合せ基板を示す説明図である。  FIG. 15 is an explanatory view showing a bonded substrate in a conventional liquid crystal filling process.
[図 16]図 16は、従来の液晶材料が充填された貼合せ基板を示す平面図である。  FIG. 16 is a plan view showing a laminated substrate filled with a conventional liquid crystal material.
[図 17]図 17は、従来の液晶パネルの製造工程を示すフローチャート図である。 符号の説明  FIG. 17 is a flowchart showing manufacturing steps of a conventional liquid crystal panel. Explanation of symbols
1 液晶パネル（表示パネル）  1 LCD panel (display panel)
4 液晶層（表示媒体層）  4 Liquid crystal layer (display medium layer)
11 ガラス基板 (第 1基板）  11 Glass substrate (first substrate)
12 ガラス基板 (第 2基板）  12 Glass substrate (second substrate)
13, 14 偏光板  13, 14 Polarizer
15 シール部材  15 Seal material
21, 22 撥水膜  21, 22 Water repellent film
23, 24 粘着層  23, 24 Adhesive layer
31 ガラス基板母材 (第 1基板母材)  31 Glass substrate base material (first substrate base material)
32 ガラス基板母材 (第 2基板母材)  32 Glass substrate base material (second substrate base material)
33 液晶材料  33 Liquid crystal materials
34 貼合せ基板  34 Bonded substrate
45 帯状領域  45 Banded area
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0034] 以下、本発明の実施形態を図面に基づいて詳細に説明する。尚、本発明は、以下 の実施形態に限定されるものではない。  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiment.
[0035] 《発明の実施形態 1》 [Embodiment 1 of the Invention]
図 1〜図 11は、本発明の実施形態 1を示している。まず、図 1及び図 2を参照して、 表示パネルである液晶パネル 1の構成について説明する。図 1は液晶パネル 1を拡 大して示す側断面図である。図 2は液晶パネル 1の外観を概略的に示す側面図であ る。尚、図 1では、説明の便宜上、液晶パネル 1の厚みは誇張されている。また、図 2 では、基板間の間隙の図示を省略している。 1 to 11 show Embodiment 1 of the present invention. First, the configuration of the liquid crystal panel 1 as a display panel will be described with reference to FIG. 1 and FIG. FIG. 1 is an enlarged side sectional view showing the liquid crystal panel 1. Fig. 2 is a side view schematically showing the appearance of the liquid crystal panel 1. The In FIG. 1, the thickness of the liquid crystal panel 1 is exaggerated for convenience of explanation. In FIG. 2, the illustration of the gap between the substrates is omitted.
[0036] 液晶パネル 1は、図 1及び図 2に示すように、スイッチング素子である TFT (図示省 略)が複数形成された TFT基板 2と、 TFT基板 2に対向して配置され、例えばカラー フィルタ（図示省略)等が形成された CF基板 3と、 CF基板 3及び TFT基板 2の間に 設けられた表示媒体層である液晶層 4とを備えている。  As shown in FIGS. 1 and 2, the liquid crystal panel 1 is disposed so as to face a TFT substrate 2 on which a plurality of TFTs (not shown) as switching elements are formed, and to be opposed to the TFT substrate 2. A CF substrate 3 on which a filter (not shown) or the like is formed, and a liquid crystal layer 4 that is a display medium layer provided between the CF substrate 3 and the TFT substrate 2 are provided.
[0037] TFT基板 2は、第 1基板であるガラス基板 11と、ガラス基板 11の液晶層 4側とは反 対側に設けられた偏光板 13とを有している。一方、 CF基板 3は、第 2基板であるガラ ス基板 12と、ガラス基板 12の液晶層 4側とは反対側に設けられた偏光板 14とを有し ている。すなわち、ガラス基板 12は、液晶層 4を介してガラス基板 11に重なり合って いる。  [0037] The TFT substrate 2 includes a glass substrate 11 as a first substrate and a polarizing plate 13 provided on the opposite side of the glass substrate 11 from the liquid crystal layer 4 side. On the other hand, the CF substrate 3 has a glass substrate 12 as a second substrate and a polarizing plate 14 provided on the side of the glass substrate 12 opposite to the liquid crystal layer 4 side. That is, the glass substrate 12 overlaps the glass substrate 11 with the liquid crystal layer 4 interposed therebetween.
[0038] また、 TFT基板 2には、図 2に示すように、ガラス基板 11とガラス基板 12とが重なり 合わずにガラス基板 11だけが張り出した領域である端子部 19を備えている。端子部 19は、 FPC 18を接続するための領域である。  In addition, as shown in FIG. 2, the TFT substrate 2 includes a terminal portion 19 that is a region in which only the glass substrate 11 protrudes without the glass substrate 11 and the glass substrate 12 overlapping. The terminal portion 19 is an area for connecting the FPC 18.
[0039] 液晶層 4は、上記各ガラス基板 11, 12と、各ガラス基板 11, 12の間に介在された 平面視で環状のシール部材 15とによって区画形成された液晶セル 20の内部に、液 晶材料が封入されることにより構成されている。言い換えれば、シール部材 15は、各 ガラス基板 11, 12の間において液晶層 4の全周を連続して取り囲むように配置され ている。ここで、「全周を連続して取り囲む」とは、周囲を完全に切れ目なく環状に取り 囲むことを意味する。  [0039] The liquid crystal layer 4 is provided inside the liquid crystal cell 20 defined by the glass substrates 11 and 12 and the annular seal member 15 interposed between the glass substrates 11 and 12 in a plan view. It is configured by enclosing liquid crystal material. In other words, the seal member 15 is disposed so as to continuously surround the entire circumference of the liquid crystal layer 4 between the glass substrates 11 and 12. Here, “surrounding the entire circumference continuously” means surrounding the circumference completely in an annular shape.
[0040] そして、本発明の特徴として、ガラス基板 11には、液晶層 4側の表面とは反対側に 撥水膜 21が設けられ、撥水膜 21の表面に粘着層 23を介して偏光板 13が貼り付けら れている。ガラス基板 12についても同様に、液晶層 4側の表面とは反対側に撥水膜 22が設けられ、撥水膜 22の表面に粘着層 24を介して偏光板 14が貼り付けられてい る。言い換えれば、偏光板 13, 14は、ガラス基板 11, 12に対し、撥水膜 21, 22を介 して貼り付けられている。撥水膜 21, 22は、例えば水溶性フッ素系材料により構成さ れている。  [0040] As a feature of the present invention, the glass substrate 11 is provided with a water repellent film 21 on the side opposite to the surface on the liquid crystal layer 4 side, and the surface of the water repellent film 21 is polarized via an adhesive layer 23. Board 13 is pasted. Similarly, for the glass substrate 12, a water repellent film 22 is provided on the side opposite to the surface on the liquid crystal layer 4 side, and a polarizing plate 14 is attached to the surface of the water repellent film 22 via an adhesive layer 24. In other words, the polarizing plates 13 and 14 are attached to the glass substrates 11 and 12 through the water-repellent films 21 and 22, respectively. The water repellent films 21 and 22 are made of, for example, a water-soluble fluorine-based material.
[0041] 液晶パネルの製造方法 次に、液晶パネルの製造方法について説明する。 [0041] Manufacturing method of liquid crystal panel Next, a method for manufacturing a liquid crystal panel will be described.
[0042] 本実施形態の製造方法には、以下に説明するように、シール部材形成工程と、表 示媒体供給工程と、基板貼合せ工程と、撥水膜形成工程と、偏光板貼付工程と、除 去工程と、分割工程とが含まれる。  [0042] In the manufacturing method of the present embodiment, as described below, a sealing member forming step, a display medium supplying step, a substrate laminating step, a water repellent film forming step, and a polarizing plate pasting step, The removal process and the division process are included.
[0043] まず、第 1基板母材であるガラス基板母材 31に対し、複数の TFTや画素電極等を パターン形成する。ガラス基板母材 31は、 TFT基板 2を構成する上記ガラス基板 11 の集合体である。一方、第 2基板母材であるガラス基板母材 32に対し、 CFや共通電 極等をパターン形成する。ガラス基板母材 32は、 CF基板 3を構成する上記ガラス基 板 12の集合体である。  First, a plurality of TFTs, pixel electrodes, and the like are pattern-formed on a glass substrate base material 31 that is a first substrate base material. The glass substrate base material 31 is an aggregate of the glass substrates 11 constituting the TFT substrate 2. On the other hand, CF, a common electrode, etc. are pattern-formed with respect to the glass substrate base material 32 which is the 2nd substrate base material. The glass substrate base material 32 is an aggregate of the glass substrates 12 constituting the CF substrate 3.
[0044] (シール部材形成工程）  [0044] (Seal member forming step)
次に、図 11のフローチャートでステップ S11に示すように、シール部材形成工程を 行う。シール部材形成工程では、例えば図 3に示すように、ガラス基板母材 31の表面 にシール部材 15を環状に複数形成する。シール部材 15は、例えば、デイスペンサの 小型シリンジ (syringe)によって塗布してもよぐスクリーン印刷によって印刷してもよい  Next, as shown in step S11 in the flowchart of FIG. 11, a seal member forming step is performed. In the sealing member forming step, for example, as shown in FIG. 3, a plurality of sealing members 15 are formed in a ring shape on the surface of the glass substrate base material 31. The sealing member 15 may be printed by screen printing or may be applied by a small syringe syringe, for example.
[0045] シール部材 15は、液晶層 4を形成すべき領域の全周を連続して取り囲むように配 置され、例えば矩形状に形成されている。すなわち、このシール部材 15は、図 21に 示した従来のシール部材 103と異なり、切れ目がない。 [0045] The seal member 15 is disposed so as to continuously surround the entire circumference of the region where the liquid crystal layer 4 is to be formed, and is formed in, for example, a rectangular shape. That is, the seal member 15 is not cut unlike the conventional seal member 103 shown in FIG.
[0046] 本発明が特に大きな効果を奏するのは、大板のガラス基板母材を分割して、中型 又は小型の液晶パネルを多数作成する場合である。ところが、これら中型又は小型 の液晶パネルの主な用途である携帯電話やカーナビゲーシヨンシステムにおいては 、大型の液晶パネルの主な用途である OA機器と異なり、要求される耐熱温度が高い ため、このシール部材 15には、耐熱性を有する光硬化型榭脂が好適である。また、 シール部材 15として、熱硬化型榭脂又は光と熱の併用によって硬化させるタイプの 榭脂を適用することも好ましい。  The present invention is particularly effective when a large glass substrate base material is divided to produce a large number of medium-sized or small-sized liquid crystal panels. However, in mobile phones and car navigation systems, which are the main applications of these medium-sized and small-sized liquid crystal panels, the required heat-resistant temperature is high, unlike OA equipment, which is the main application of large-sized liquid crystal panels. The seal member 15 is preferably a photocurable resin having heat resistance. It is also preferable to apply a thermosetting type resin or a type of resin that is cured by a combination of light and heat as the sealing member 15.
[0047] 尚、シール部材を形成する基板母材は、ガラス基板母材 31に限定されない。すな わち、ガラス基板母材 31及びガラス基板母材 32の一方の表面に、シール部材 15を 形成すればよい。 [0048] (表示媒体供給工程） Note that the substrate base material forming the sealing member is not limited to the glass substrate base material 31. In other words, the sealing member 15 may be formed on one surface of the glass substrate base material 31 and the glass substrate base material 32. [0048] (Display medium supply process)
次に、図 11のステップ S12に示すように、表示媒体供給工程を行う。表示媒体供給 工程では、各シール部材 15の内側の領域に表示媒体である液晶材料を供給する。 例えば、図 3に示すように、各シール部材 15の内側領域に液晶材料 33を滴下する。 液晶材料 33は、液晶セル 20の容積に見合う分量だけ滴下され、シール部材 15の内 側に溜まる。  Next, as shown in step S12 of FIG. 11, a display medium supply process is performed. In the display medium supply step, a liquid crystal material that is a display medium is supplied to an area inside each seal member 15. For example, as shown in FIG. 3, a liquid crystal material 33 is dropped on the inner region of each seal member 15. The liquid crystal material 33 is dropped by an amount corresponding to the volume of the liquid crystal cell 20 and is accumulated inside the seal member 15.
[0049] 尚、この工程では、ガラス基板母材 31におけるシール部材 15の内側の領域に対 応するガラス基板母材 32の所定領域に液晶材料を滴下して供給するようにしてもよ い。  In this step, the liquid crystal material may be dropped and supplied to a predetermined region of the glass substrate base material 32 corresponding to the region inside the seal member 15 in the glass substrate base material 31.
[0050] (基板貼合せ工程）  [0050] (Board bonding process)
次に、図 11のステップ S13に示すように、基板貼合せ工程を行う。基板貼合せ工程 では、上記ガラス基板母材 31とガラス基板母材 32とを貼り合せて、貼合せ基板を形 成する。まず、真空状態の下で、ガラス基板母材 31に対し、ガラス基板母材 32を上 力も重ねる。その状態で、紫外線等の光を照射し、必要に応じて加熱することによつ て、シール部材 15を硬化させる。そのことにより、液晶材料 33を液晶セル 20の内部 に密封して貼合せ基板 34を得る。  Next, as shown in step S13 of FIG. 11, a substrate bonding process is performed. In the substrate bonding step, the glass substrate base material 31 and the glass substrate base material 32 are bonded together to form a bonded substrate. First, the glass substrate base material 32 is also superimposed on the glass substrate base material 31 in a vacuum state. In this state, the sealing member 15 is cured by irradiating light such as ultraviolet rays and heating as necessary. As a result, the liquid crystal material 33 is sealed inside the liquid crystal cell 20 to obtain a bonded substrate 34.
[0051] (コモン転移電極形成工程）  [0051] (Common transfer electrode formation process)
各ガラス基板母材 31, 32のいずれにも、液晶層 4に電圧を印加するための電極が 予め形成されている。しかし、液晶パネルとして完成した状態では、一方の TFT基板 2のみに集中して設けた端子部 19にお 、て電極配線を外部に取出せることが望まし い。したがって、 CF基板 3側から、端子部 19を有する TFT基板 2側へ、電極配線を 引き出す必要がある。そのために、コモン転移電極が好適に用いられる。「コモン転 移電極」とは、液晶層 4を挟んで互いに対向するガラス基板の表面の電極同士の導 通をとるためにガラス基板間に挟みこまれる電極である。  An electrode for applying a voltage to the liquid crystal layer 4 is formed in advance on each of the glass substrate base materials 31 and 32. However, when the liquid crystal panel is completed, it is desirable that the electrode wiring can be taken out to the outside at the terminal portion 19 provided concentrated on only one TFT substrate 2. Therefore, it is necessary to draw out electrode wiring from the CF substrate 3 side to the TFT substrate 2 side having the terminal portions 19. Therefore, a common transition electrode is preferably used. The “common transfer electrode” is an electrode that is sandwiched between the glass substrates in order to allow the electrodes on the surfaces of the glass substrates facing each other with the liquid crystal layer 4 interposed therebetween.
[0052] 基板貼合せ工程よりも前の状態に戻って、コモン転移電極について説明する。ガラ ス基板母材 31, 32を貼り合せる前の段階では、本来まだ個別の液晶パネルに分割 する前の大板の基板母材の状態であるが、説明の便宜上、個別の液晶パネルに分 割した後の 1つの液晶パネルの一部を拡大した平面図を図 5に示す。 [0053] 図 4及び図 5に示すように、シール部材 15の内側には、ガラス基板母材 31, 32の 上に複数のコモン電極パッド 36を形成する。コモン電極パッド 36には、それぞれ粒 状のコモン転移電極 37を形成する。コモン電極パッド 36には配線の一端が接続され 、その配線の他端はシール部材 15を横切って液晶パネルの外縁に向力つて延びて いる。コモン転移電極 37は、中心に粒状の導電性粒子 38を含み、その導電性粒子 38の外面が導電性材料 39により包まれた構造を有している。 [0052] Returning to the state before the substrate bonding step, the common transition electrode will be described. In the stage before bonding the glass substrate base materials 31, 32, it is essentially the state of the substrate substrate of the large board before being divided into individual liquid crystal panels, but for the sake of explanation, it is divided into individual liquid crystal panels. Figure 5 shows an enlarged plan view of a part of one liquid crystal panel. As shown in FIGS. 4 and 5, a plurality of common electrode pads 36 are formed on the glass substrate base materials 31 and 32 inside the seal member 15. In the common electrode pad 36, a granular common transition electrode 37 is formed. One end of the wiring is connected to the common electrode pad 36, and the other end of the wiring extends across the seal member 15 toward the outer edge of the liquid crystal panel. The common transition electrode 37 includes a granular conductive particle 38 in the center, and has a structure in which the outer surface of the conductive particle 38 is covered with a conductive material 39.
[0054] 基板貼合せ工程では、コモン転移電極 37が、各ガラス基板母材 31, 32同士を貼り 合わせることによって、上下のコモン電極パッド 36により挟まれて押しつぶされる。そ の結果、図 4に示すように、導電性粒子 38を介して上下のガラス基板母材 31, 32が 対向し、押しつぶされて変形した導電性材料 39が導電性粒子 38の周囲を取り囲ん だ形になる。このようにして、ガラス基板母材 31の表面の電極と、ガラス基板母材 32 の表面の電極との間で、導通がとられる。  In the substrate bonding step, the common transition electrode 37 is sandwiched between the upper and lower common electrode pads 36 by pressing the glass substrate base materials 31 and 32 together. As a result, as shown in FIG. 4, the upper and lower glass substrate base materials 31 and 32 face each other through the conductive particles 38, and the conductive material 39 that was crushed and deformed surrounded the conductive particles 38. Become a shape. In this way, conduction is established between the electrode on the surface of the glass substrate base material 31 and the electrode on the surface of the glass substrate base material 32.
[0055] 尚、図 4は、コモン転移電極 37がつぶれた様子を示すために挙げたものであって、 液晶パネルとしては図 1とは別の構成例における断面図である。  FIG. 4 is shown to show a state in which the common transition electrode 37 is crushed, and is a cross-sectional view of a configuration example different from FIG. 1 for the liquid crystal panel.
[0056] また、本実施形態における液晶パネルの製造方法では、真空中でガラス基板母材 31, 32同士を重ね合わせた状態で大気圧に戻すことにより、大気圧による圧力を貼 合せ圧力として利用する。この貼合せ圧力が作用して ヽる状態で紫外線を照射した り加熱したりすることによって、シール部材 15を硬化させる。  [0056] Further, in the liquid crystal panel manufacturing method according to the present embodiment, the pressure due to the atmospheric pressure is used as the bonding pressure by returning the pressure to the atmospheric pressure in a state where the glass substrate base materials 31, 32 are superposed in a vacuum. To do. The sealing member 15 is cured by irradiating with ultraviolet rays or heating in a state where the bonding pressure acts.
[0057] (撥水膜形成工程）  [0057] (Water repellent film forming step)
次に、図 11のステップ S14に示すように、撥水膜形成工程を行う。撥水膜形成工程 では、ガラス基板母材 31, 32に対し、液晶層 4側とは反対側の表面に撥水膜 21, 22 を形成する。  Next, as shown in step S14 of FIG. 11, a water repellent film forming step is performed. In the water repellent film forming step, the water repellent films 21 and 22 are formed on the surface opposite to the liquid crystal layer 4 side with respect to the glass substrate base materials 31 and 32.
[0058] 撥水膜形成工程は、洗浄工程と同時に行う。洗浄工程では、図 6に示すように、基 板貼合せ工程で得られた大判の貼合せ基板 34を、偏光板 13, 14を貼付ける前に、 基板洗浄装置 43によって予め洗浄する。  [0058] The water repellent film forming step is performed simultaneously with the cleaning step. In the cleaning step, as shown in FIG. 6, the large bonded substrate 34 obtained in the substrate bonding step is cleaned in advance by the substrate cleaning device 43 before the polarizing plates 13 and 14 are bonded.
[0059] このとき、撥水膜形成工程では、撥水性材料である例えば水溶性フッ素系材料等 を洗浄水に混入させる。そうして、貼合せ基板 34は基板洗浄装置 43で洗浄水により 洗浄されると共に、その表面に撥水膜 21, 22が形成される。 [0060] ところで、図 7に示すように、貼合せ基板 34の表面は、製造加工上、凹凸状に形成 されることが避けられない。通常、ガラスメーカーにより製造されるガラス基板の表面 あらさは、 0. 01 m以下程度である。また、エッチングによりガラス基板を薄型化した 場合には 0. 02 /z m程度の表面あらさになる。上記撥水膜形成工程で撥水膜 21, 2 2を形成することにより、図 7に示すように、貼合せ基板 34の表面は平坦ィ匕される。 At this time, in the water-repellent film forming step, a water-repellent material such as a water-soluble fluorine-based material is mixed into the cleaning water. Thus, the bonded substrate 34 is cleaned with cleaning water by the substrate cleaning device 43, and the water-repellent films 21 and 22 are formed on the surface thereof. [0060] By the way, as shown in FIG. 7, the surface of the bonded substrate 34 is inevitably formed in an uneven shape in the manufacturing process. Usually, the surface roughness of glass substrates manufactured by glass manufacturers is about 0.01 m or less. When the glass substrate is thinned by etching, the surface roughness is about 0.02 / zm. By forming the water repellent films 21 and 2 in the water repellent film forming step, the surface of the bonded substrate 34 is flattened as shown in FIG.
[0061] (偏光板貼付工程）  [0061] (Polarizing plate attaching process)
次に、図 11のステップ S15に示すように、偏光板貼付工程を行う。偏光板貼付工程 では、上記撥水膜 21, 22の表面に対し、粘着層 23, 24を介して偏光板 13, 14をそ れぞれ貼り付ける。偏光板 13, 14の貼り付けは、例えばロール状の偏光フィルムを 順次引き出して貼合せ基板 34へ供給することにより行う。その他に、例えば貼合せ 基板 34と略同じ大きさに切り出された偏光フィルムを貼り合わせるようにしてもよぐま た、少なくとも液晶セルの 1つ分よりも大きな面積に切り出された偏光フィルムを貼り 合わせるようにしてもよ ヽ。  Next, as shown in step S15 of FIG. 11, a polarizing plate pasting step is performed. In the polarizing plate attaching step, the polarizing plates 13 and 14 are attached to the surfaces of the water-repellent films 21 and 22 through the adhesive layers 23 and 24, respectively. The polarizing plates 13 and 14 are attached by, for example, sequentially drawing out a roll-shaped polarizing film and supplying it to the bonding substrate 34. In addition, for example, a polarizing film cut to approximately the same size as the bonding substrate 34 may be bonded, and a polarizing film cut to an area larger than at least one liquid crystal cell is bonded. You can do it.
[0062] (除去工程）  [0062] (Removal step)
次に、除去工程では、偏光板 13, 14の一部を、撥水膜 21, 22の表面力も粘着層 2 3, 24と共に除去する。偏光板 13, 14は、拡大斜視図である図 8に示すように、刃物 44によって除去する。刃物 44は、例えば断面凹状に形成されている。  Next, in the removing step, a part of the polarizing plates 13 and 14 is removed together with the surface strength of the water-repellent films 21 and 22 together with the adhesive layers 2 and 24. The polarizing plates 13 and 14 are removed by the blade 44 as shown in FIG. 8 which is an enlarged perspective view. The blade 44 is formed, for example, in a concave cross section.
[0063] 粘着層 23, 24は撥水膜 21, 22上で、偏光板 13, 14と共に刃物 44により切断され て持ち上げられ、ガラス基板母材 31, 32に粘着層 23, 24の一部が残留することなく 剥離される。そうして、刃物 44の刃先底部により撥水膜 21, 22と粘着層 23, 24との 間が分離されると共に、刃先両側部により、偏光板 13, 14及び粘着層 23, 24が所 定の幅で切除される。その結果、貼合せ基板 34の表面には、偏光板 13, 14の切れ 目として、ガラス基板 11, 12の表面が帯状に露出した帯状領域 45が形成される。帯 状領域 45は、例えば格子状に形成することが好ま 、。  [0063] The adhesive layers 23 and 24 are cut and lifted by the blade 44 together with the polarizing plates 13 and 14 on the water-repellent films 21 and 22, and a part of the adhesive layers 23 and 24 is formed on the glass substrate base materials 31 and 32. It peels without remaining. Thus, the water-repellent films 21, 22 and the adhesive layers 23, 24 are separated by the bottom edge of the blade 44, and the polarizing plates 13, 14 and the adhesive layers 23, 24 are determined by the both sides of the blade edge. It is excised with the width of. As a result, on the surface of the laminated substrate 34, a strip-like region 45 is formed as a break between the polarizing plates 13 and 14, in which the surfaces of the glass substrates 11 and 12 are exposed in a strip shape. The band-like region 45 is preferably formed in a lattice shape, for example.
[0064] 尚、帯状領域 45を所望の幅に形成するためには、同一の刃物又は同一形状の刃 物を複数回走行させるようにしてもょ 、。こうすることによって刃物の幅以上の幅の帯 状領域 45を形成することも可能である。また、偏光板 13, 14及び粘着層 23, 24を剥 離するための剥離手段は、図 8に示すような刃物形状に限定されるものではなぐガ ラス基板母材 31, 32から偏光板を剥がしとることが可能なヘラ状の形状を有するもの であればよい。 [0064] In order to form the band-like region 45 in a desired width, the same blade or the blade having the same shape may be caused to travel a plurality of times. By doing so, it is also possible to form a band-like region 45 having a width larger than the width of the blade. Further, the peeling means for peeling the polarizing plates 13 and 14 and the adhesive layers 23 and 24 is not limited to the blade shape as shown in FIG. Any material having a spatula shape capable of peeling off the polarizing plate from the glass substrate base materials 31 and 32 may be used.
[0065] (分割工程） [0065] (Division process)
次に、図 11のステップ S16に示すように、分割工程を行う。分割工程では、貼合せ 基板 34を偏光板 13, 14が除去された帯状領域 45において切断することにより、貼 合せ基板 34を複数の表示パネルの形状に分割する。すなわち、貼合せ基板 34は、 上記刃物 44により分割された偏光板 13, 14が貼り付けられた状態で、液晶セル 20 毎に分割される。  Next, as shown in step S16 of FIG. 11, a dividing step is performed. In the dividing step, the bonded substrate 34 is cut into the strip-shaped regions 45 where the polarizing plates 13 and 14 are removed, thereby dividing the bonded substrate 34 into a plurality of display panel shapes. That is, the bonded substrate 34 is divided for each liquid crystal cell 20 in a state where the polarizing plates 13 and 14 divided by the blade 44 are attached.
[0066] 拡大斜視図である図 9に示すように、ガラスを切断するツール（図示省略)を帯状領 域 45に沿って走行させることにより、分断ライン 46をその帯状領域 45のガラス基板 母材 31, 32に形成する。その後、図 10に示すように、上記分断ライン 46の亀裂を成 長させることにより、貼合せ基板 34を複数の液晶パネル 1に分割する。  [0066] As shown in Fig. 9 which is an enlarged perspective view, the cutting line 46 is moved along the belt-like region 45 by moving a tool for cutting glass (not shown), so that the cutting line 46 is formed on the glass substrate base material of the belt-like region 45. Formed on 31, 32. Thereafter, as shown in FIG. 10, the bonded substrate 34 is divided into a plurality of liquid crystal panels 1 by growing cracks in the dividing line 46.
[0067] このとき、刃物 44とガラス基板母材 31, 32を分断するツールとを 1つのユニットに組 み込むようにすると、そのユニットをガラス基板母材 31, 32上を走行させることで、上 記除去工程と分割工程とを同時に行うことができる。  [0067] At this time, if the cutting tool 44 and the tool for cutting the glass substrate base materials 31, 32 are assembled into one unit, the unit can be run on the glass substrate base materials 31, 32, The removal step and the division step can be performed simultaneously.
[0068] 尚、ガラス基板母材 31, 32を分断するツールは限定されるものではない。また、図 10に示した例では、液晶パネル 1は 8枚のみ表示されている力 この枚数は 8枚に限 らず適宜設定可能であり、たとえば数百枚に分割するようにしてもよい。  [0068] The tool for cutting the glass substrate base materials 31, 32 is not limited. Further, in the example shown in FIG. 10, the power displayed on the liquid crystal panel 1 is only eight. This number is not limited to eight and can be appropriately set. For example, the liquid crystal panel 1 may be divided into several hundreds.
[0069] その後、図 11のステップ S17〜S20〖こ示すよう〖こ、点灯検査工程、 FPC接続工程 、バックライト及びケースの取付工程、及び最終点等検査工程を、分割された各液晶 パネル 1毎に行う。以上の各工程によって、液晶パネル 1を製造する。  [0069] After that, steps S17 to S20 in FIG. 11 are divided into each of the divided liquid crystal panels 1 through the lighting inspection process, the FPC connection process, the backlight and case mounting process, and the final point inspection process. Do it every time. The liquid crystal panel 1 is manufactured through the above steps.
[0070] 一実施形態 1の効果  [0070] Effect of Embodiment 1
したがって、この実施形態 1によると、ガラス基板母材 31, 32 (貼合せ基板 34)の表 面に例えば水溶性フッ素系材料等の撥水膜 21, 22を予め設けて、その撥水膜 21, 22の表面に粘着層 23, 24を介して偏光板 13, 14を貼り付けるようにしたので、撥水 膜 21, 22と粘着層 23, 24との界面において、粘着層 23, 24及び偏光板 13, 14を 確実に分離除去することができる。  Therefore, according to the first embodiment, the water repellent film 21, 22 such as a water-soluble fluorine-based material is provided in advance on the surface of the glass substrate base material 31, 32 (bonded substrate 34), and the water repellent film 21 Since the polarizing plates 13 and 14 are attached to the surface of the adhesive layers 23 and 24 via the adhesive layers 23 and 24, the adhesive layers 23 and 24 and the polarizing layer are formed at the interface between the water-repellent films 21 and 22 and the adhesive layers 23 and 24. The plates 13 and 14 can be reliably separated and removed.
[0071] すなわち、撥水膜 21, 22の細かい粒子によってガラス基板母材 31, 32の表面が 高度に平坦化され、ガラス基板母材 31, 32に撥水性が付与されることにより、粘着層 23, 24は容易に剥がれ易くなる。 That is, the surfaces of the glass substrate base materials 31 and 32 are formed by the fine particles of the water repellent films 21 and 22. The pressure-sensitive adhesive layers 23 and 24 are easily peeled off by being highly planarized and imparting water repellency to the glass substrate base materials 31 and 32.
[0072] さらに、洗浄後のガラス基板母材 31, 32の表面に撥水膜 21, 22を形成することに より、防汚効果を得ることができる。また、仮に、撥水膜 21, 22の表面にダストゃコン タミネーシヨンが載ったとしても、これらを容易に除去することができる。したがって、撥 水膜 21, 22と偏光板 13, 14との間にダスト等の不純物が介在しないように、偏光板 13, 14を貼り付けることができる。  Furthermore, the antifouling effect can be obtained by forming the water-repellent films 21 and 22 on the surfaces of the glass substrate base materials 31 and 32 after cleaning. Moreover, even if dust is contaminated on the surfaces of the water-repellent films 21 and 22, these can be easily removed. Therefore, the polarizing plates 13 and 14 can be stuck so that impurities such as dust are not interposed between the water repellent films 21 and 22 and the polarizing plates 13 and 14.
[0073] そうして、偏光板 13, 14をガラス基板母材 31, 32の全体に貼り付けたとしても、偏 光板 13, 14及び粘着層 23, 24が部分的に除去された帯状領域 45において、ガラ ス基板母材 31, 32を確実に分割することができる。そのため、ガラス基板母材 31, 3 2の分割工程を、偏光板 13, 14を貼り付けた後である製造工程の比較的遅い段階 において行うことができる。その結果、大判のガラス基板母材 31, 32の状態で、多く の工程を一括して行うことができるので、液晶パネル及び液晶表示装置の生産効率 を飛躍的に向上させることができる。言い換えれば、液晶パネル 1枚当たりの製造に 要する時間を大幅に短縮することができる。  [0073] Thus, even if the polarizing plates 13 and 14 are attached to the entire glass substrate base materials 31 and 32, the band-like regions 45 in which the polarizing plates 13 and 14 and the adhesive layers 23 and 24 are partially removed 45 Thus, the glass substrate base materials 31, 32 can be reliably divided. Therefore, the dividing process of the glass substrate base materials 31 and 32 can be performed at a relatively late stage of the manufacturing process after the polarizing plates 13 and 14 are attached. As a result, many processes can be performed at once in the state of the large-sized glass substrate base materials 31 and 32, so that the production efficiency of the liquid crystal panel and the liquid crystal display device can be dramatically improved. In other words, the manufacturing time per LCD panel can be greatly reduced.
[0074] 詳細に説明すると、従来の製造方法では、図 17に示すように、製造工程の比較的 早い段階であるステップ S23において分割工程を行う。したがって、ガラス基板母材 31, 32の全体として一括して処理できる工程は、ステップ S21及び S22のシール部 材形成工程と基板貼合せ工程に限られてしまい、その他のステップ S24〜S31の各 工程は、分割後の複数の貼り合わせ基板毎に個別に行わなければならず、非常に 手間がかかる。  More specifically, in the conventional manufacturing method, as shown in FIG. 17, the dividing process is performed in step S23, which is a relatively early stage of the manufacturing process. Accordingly, the processes that can be collectively processed as a whole of the glass substrate base materials 31 and 32 are limited to the seal member forming process and the substrate bonding process in steps S21 and S22, and the other processes in steps S24 to S31. This must be done individually for each of the plurality of bonded substrates after the division, which is very laborious.
[0075] これに対し、本実施形態では、図 11に示すように、製造工程の比較的遅!、段階で あるステップ S16において分割工程を行う。したがって、ステップ S11〜S16のシー ル部材形成工程、表示媒体供給工程、基板貼合せ工程、洗浄工程 (撥水膜形成ェ 程)、及び偏光板貼付工程等の多くの工程を、ガラス基板母材 31, 32の全体として 一括して処理できる。  In contrast, in the present embodiment, as shown in FIG. 11, the dividing process is performed in step S16, which is a relatively slow stage of the manufacturing process. Therefore, many steps such as the sealing member forming process, the display medium supplying process, the substrate bonding process, the cleaning process (water repellent film forming process), and the polarizing plate applying process in steps S11 to S16 are performed. Can be processed as a whole for 31, 32.
[0076] 《その他の実施形態》  << Other Embodiments >>
本発明は、上記実施形態 1について、以下のような構成としてもよい。 [0077] 上記実施形態 1では、撥水膜形成工程を洗浄工程において行うようにしたが、その 撥水膜形成工程を偏光板貼付工程にぉ ヽて行うようにしてもょ ヽ。 The present invention may be configured as follows for the first embodiment. In Embodiment 1 described above, the water-repellent film forming step is performed in the cleaning step, but the water-repellent film forming step may be performed over the polarizing plate attaching step.
[0078] すなわち、図 12に示すように、偏光板 13, 14を貼り付けるための偏光板貼付装置 50は、偏光板 13, 14を貼り付ける前に、貼合せ基板 34の表面のダストを粘着ローラ 一（図示省略）によって除去するようになっている。そこで、この粘着ローラーに水溶 性フッ素系材料等の撥水性材料を散布して、その粘着ローラーを貼合せ基板 34の 表面上で転動させることにより、上記実施形態 1と同様に、ガラス基板母材 31, 32の 表面に撥水膜 21, 22を形成することができる。  That is, as shown in FIG. 12, the polarizing plate pasting apparatus 50 for pasting the polarizing plates 13 and 14 adheres the dust on the surface of the laminated substrate 34 before the polarizing plates 13 and 14 are pasted. It is removed by a roller (not shown). Therefore, by spraying a water-repellent material such as a water-soluble fluorine-based material on the adhesive roller and rolling the adhesive roller on the surface of the laminated substrate 34, the glass substrate mother is the same as in the first embodiment. Water repellent films 21 and 22 can be formed on the surfaces of the materials 31 and 32.
[0079] また、撥水膜 21, 22及び偏光板 13, 14を、ガラス基板母材 31, 32の双方に形成 するようにした力 本発明はこれに限らず、液晶パネルの方式や目的によっては、こ れらガラス基板母材 31, 32の少なくとも一方に形成するようにしてもよい。  [0079] Further, the force of forming the water-repellent films 21, 22 and the polarizing plates 13, 14 on both the glass substrate base materials 31, 32 is not limited to this. May be formed on at least one of these glass substrate base materials 31 and 32.
[0080] また、ガラス基板母材 31, 32に複数の偏光板が積層して設けられている場合には 、各偏光板同士の間に撥水膜を設けずに、ガラス基板母材 31, 32と最下層の偏光 板との間にのみ撥水膜を設けることが好ましい。各偏光板同士の間に撥水膜が介在 されていると、偏光板の特性が劣化してしまうためである。  [0080] When a plurality of polarizing plates are laminated on the glass substrate base materials 31, 32, the glass substrate base materials 31, 32 are not provided with a water repellent film between the polarizing plates. It is preferable to provide a water repellent film only between 32 and the lowermost polarizing plate. This is because if the water-repellent film is interposed between the polarizing plates, the properties of the polarizing plate are deteriorated.
[0081] また、上記実施形態では、第 1基板母材及び第 2基板母材を「ガラス基板母材」とし て説明してきたが、これら第 1基板母材及び第 2基板母材はガラス基板母材に限らず 、例えばプラスチック等の他の材質の基板母材であってもよ 、。  In the above embodiment, the first substrate base material and the second substrate base material have been described as “glass substrate base materials”. However, the first substrate base material and the second substrate base material are glass substrates. Not only the base material but also a base material made of other materials such as plastic, for example.
[0082] また、上記実施形態では、表示パネルとして液晶パネルを例に挙げて説明した力 本発明はこれに限らず、例えばエレクト口クロミック表示パネル等の他の表示パネル についても同様に適用することができる。  Further, in the above-described embodiment, the power described by taking the liquid crystal panel as an example of the display panel is not limited to this. For example, the present invention is similarly applied to other display panels such as an electochromic display panel. Can do.
[0083] また、今回開示した上記実施形態は全ての点で例示であって制限的なものではな い。本発明の範囲は上記した説明ではなくて特許請求の範囲によって示され、特許 請求の範囲と均等の意味及び範囲内でのすべての変更を含むものである。  Further, the above-described embodiment disclosed herein is illustrative in all points and is not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and includes all modifications within the scope and meaning equivalent to the terms of the claims.
産業上の利用可能性  Industrial applicability
[0084] 以上説明したように、本発明は、液晶パネル及びエレクト口クロミック表示パネル等 の表示パネル、及びその製造方法について有用であり、特に、偏光板を粘着層と共 に確実に除去して、基板を正確に分割する場合に適して ヽる。 [0084] As described above, the present invention is useful for display panels such as liquid crystal panels and electochromic display panels, and a method for manufacturing the same. In particular, the polarizing plate is reliably removed together with the adhesive layer. Suitable for dividing the substrate accurately.

Claims

請求の範囲 The scope of the claims
[1] 第 1基板と、  [1] a first substrate;
前記第 1基板に表示媒体層を介して重なり合う第 2基板と、  A second substrate overlapping the first substrate via a display medium layer;
前記第 1基板と前記第 2基板との間において前記表示媒体層を取り囲むように配置 されたシール部材とを備えた表示パネルであって、  A display panel comprising: a seal member disposed so as to surround the display medium layer between the first substrate and the second substrate;
前記第 1基板及び前記第 2基板の少なくとも一方には、前記液晶層側の表面とは 反対側に撥水膜が設けられ、  At least one of the first substrate and the second substrate is provided with a water repellent film on the side opposite to the surface on the liquid crystal layer side,
前記撥水膜の表面には、粘着層を介して偏光板が貼り付けられている  A polarizing plate is attached to the surface of the water repellent film via an adhesive layer.
ことを特徴とする表示パネル。  A display panel characterized by that.
[2] 請求項 1において、 [2] In claim 1,
前記撥水膜は、水溶性フッ素系材料により構成されて ヽる  The water repellent film is made of a water-soluble fluorine-based material.
ことを特徴とする表示パネル。  A display panel characterized by that.
[3] 請求項 1において、 [3] In claim 1,
前記表示媒体層は液晶層である  The display medium layer is a liquid crystal layer
ことを特徴とする表示パネル。  A display panel characterized by that.
[4] 第 1基板母材の表面にシール部材を環状に複数形成するシール部材形成工程と、 前記シール部材の内側の領域、又は、前記シール部材の内側の領域に対応する 第 2基板母材の領域に表示媒体を供給する表示媒体供給工程と、 [4] A seal member forming step in which a plurality of seal members are annularly formed on the surface of the first substrate base material, and a second substrate base material corresponding to a region inside the seal member or a region inside the seal member A display medium supply step of supplying a display medium to the area of
前記第 1基板母材と前記第 2基板母材とを貼り合せて貼合せ基板を形成する基板 貼合せ工程と、  A substrate laminating step of bonding the first substrate base material and the second substrate base material to form a bonded substrate;
前記第 1基板母材及び前記第 2基板母材の少なくとも一方に、撥水膜を形成する 撥水膜形成工程と、  A water repellent film forming step of forming a water repellent film on at least one of the first substrate base material and the second substrate base material;
前記撥水膜の表面に対し、粘着層を介して偏光板を貼り付ける偏光板貼付工程と 前記偏光板の一部を、前記撥水膜の表面から前記粘着層と共に除去する除去ェ 程と、  A polarizing plate attaching step of attaching a polarizing plate to the surface of the water repellent film via an adhesive layer; and a removing step of removing a part of the polarizing plate together with the adhesive layer from the surface of the water repellent film;
前記貼合せ基板を前記偏光板が除去された領域において切断することにより、該 貼合せ基板を複数の表示パネルの形状に分割する分割工程とを含む ことを特徴とする表示パネルの製造方法。 A dividing step of dividing the bonded substrate into a plurality of display panel shapes by cutting the bonded substrate in a region where the polarizing plate is removed. A display panel manufacturing method characterized by the above.
[5] 請求項 4において、 [5] In claim 4,
前記撥水膜形成工程では、撥水性材料を混入させた洗浄水により、前記第 1基板 母材及び前記第 2基板母材の少なくとも一方を洗浄することによって、前記撥水膜を 形成する  In the water repellent film forming step, the water repellent film is formed by cleaning at least one of the first substrate base material and the second substrate base material with cleaning water mixed with a water repellent material.
ことを特徴とする表示パネルの製造方法。  A display panel manufacturing method characterized by the above.
[6] 請求項 4において、 [6] In claim 4,
前記撥水膜形成工程では、撥水性材料が粘着面に散布された粘着ローラを、前記 第 1基板母材及び前記第 2基板母材の少なくとも一方に転動させることによって、前 記撥水膜を形成する  In the water repellent film forming step, the water repellent film is formed by rolling an adhesive roller having a water repellent material dispersed on the adhesive surface to at least one of the first substrate base material and the second substrate base material. Form
ことを特徴とする表示パネルの製造方法。  A display panel manufacturing method characterized by the above.
[7] 請求項 4において、 [7] In claim 4,
前記除去工程では、前記偏光板及び前記粘着層を所定の幅で切除する ことを特徴とする表示パネルの製造方法。  In the removing step, the polarizing plate and the adhesive layer are cut out with a predetermined width.
[8] 請求項 4において、 [8] In claim 4,
前記表示媒体は液晶材料である  The display medium is a liquid crystal material.
ことを特徴とする表示パネルの製造方法。  A display panel manufacturing method characterized by the above.
PCT/JP2006/313879 2005-08-02 2006-07-12 Display device and method of producing the same WO2007015356A1 (en)

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Citations (2)

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Publication number Priority date Publication date Assignee Title
JPH06342139A (en) * 1994-03-18 1994-12-13 Seiko Epson Corp Production of liquid crystal display body
WO2003046647A1 (en) * 2001-11-27 2003-06-05 Sharp Kabushiki Kaisha Liquid crystal panel, method and device for manufacturing liquid crystal panel, and polarizing plate stamping device

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
JPH06342139A (en) * 1994-03-18 1994-12-13 Seiko Epson Corp Production of liquid crystal display body
WO2003046647A1 (en) * 2001-11-27 2003-06-05 Sharp Kabushiki Kaisha Liquid crystal panel, method and device for manufacturing liquid crystal panel, and polarizing plate stamping device

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