Patent application number | Description | Published |
20120094410 | METHOD AND SYSTEM FOR CONTINUOUSLY MANUFACTURING LIQUID CRYSTAL DISPLAY DEVICE - A method for continuously manufacturing a liquid crystal display device by bonding a polarizing film to a liquid crystal panel with a pressure-sensitive adhesive interposed therebetween, includes a polarizing film supply step including drawing an optical film laminate from the continuous roll placed in a dry environment, cutting at least a polarizing film and a pressure-sensitive adhesive, while leaving a carrier film uncut and feeding the sheet piece and the pressure-sensitive adhesive piece; a liquid crystal panel supply step including feeding the liquid crystal panel in a first humid environment having a relative humidity higher than that of the dry environment; and a bonding step including bonding the sheet piece to the liquid crystal panel with the pressure-sensitive adhesive piece interposed therebetween in a second humid environment having a relative humidity higher than that of the dry environment. | 04-19-2012 |
20120241077 | METHOD AND APPARATUS FOR THE CONTINUOUS MANUFACTURE OF LIQUID CRYSTAL DISPLAY DEVICES - The present invention provides a method and apparatus designed to, during continuous manufacture of liquid crystal display panels, feed only a normal sheet to a lamination position for lamination to a rectangular panel and continuously laminate them together while positionally aligning them with each other. In the present invention, plural devices making up the entire apparatus are cooperatively associated with each other to make it possible that, among plural polarizing film sheets comprising a defect-free normal sheet and a defect-containing defective sheet each formed on a carrier film comprised in a strip-shaped film laminate. The normal sheet is reliably peeled from the carrier film by cooperatively associating feeding of the strip-shaped film laminate with a normal-sheet peeling device, and the defective sheet is reliably taken up while being attached to the carrier film, by cooperatively associating the feeding of the strip-shaped film laminate with a defective-sheet path changing device. | 09-27-2012 |
20120243089 | POLARIZING MEMBRANE AND POLARIZING FILM - A polarizing membrane according to an embodiment of the present invention includes a polyvinyl alcohol-based resin membrane containing a dichromatic substance. The polyvinyl alcohol-based resin membrane has an Nz coefficient of 1.10 or more and 1.50 or less. | 09-27-2012 |
20120291945 | METHOD AND SYSTEM FOR MANUFACTURING LIQUID CRYSTAL DISPLAY DEVICE - The method for manufacturing a liquid crystal display device includes carrier film feeding steps including feeding long carrier films from continuous rolls, respectively; peeling steps including folding back each of the carrier films at a front end part placed on a carrier film feed path so that the optical films are peeled off from the carrier films, respectively; and bonding steps including bonding the optical films to the viewer side and back side of a liquid crystal panel, wherein in the bonding steps, the optical films are bonded to the liquid crystal panel in such a manner that the number of times the optical film is bonded to the back side of the liquid crystal panel is greater than the number of times the optical film is bonded to the viewer side of the liquid crystal panel. | 11-22-2012 |
20120300377 | TURNOVER DEVICE OF LIQUID CRYSTAL PANEL - A turnover device of a liquid crystal panel which comprises: a panel holding portion including a base, a panel face supporting portion having plural pairs of panel face touching portions to support both panel faces of a liquid crystal panel, a supporting arm of a panel long edge having a long edge touching portion to support a long edge of the panel, and a supporting arm of a panel short edge having a short edge touching portion to support a short edge of the panel; and a driving portion including a rotation shift to form a right angle with a bisector to divide an angle formed by the long edge touching portion and the short edge touching portion, and an actuator for turnover to rotate and drive the rotation shaft. | 11-29-2012 |
20120321782 | METHOD AND APPARATUS FOR FABRICATING OPTICAL FILM - Disclosed is a method for fabricating an optical film, comprising a treatment step comprising: continuously feeding a film, while holding both transverse end portions of the film; and bringing a lower surface of the film into contact with a surface of a treatment liquid with which a treatment tank is filled, while continuously feeding the film. The method for fabricating a polarizing film in which bringing a liquid into contact with a film and transversely stretching the polymer film by a tenter method or the like can be performed at the same time using a small and simple fabricating apparatus. | 12-20-2012 |
20130070194 | METHOD AND SYSTEM FOR PRODUCING LIQUID CRYSTAL PANEL - An object of the invention is to provide a method and a system for manufacturing a liquid crystal panel, which allow more successful bonding of an optical film to a liquid crystal cell. A pressing force Fa per unit area applied when the optical film is pressed by the first roller and a pressing force Fb per unit area applied when the liquid crystal cell is pressed by the second roller satisfy the relation Fa>Fb. On the first roller side, the feed may fail to be stabilized due to the influence of tension fluctuations or vibration acting on the first optical film, so that air bubbles may occur. When the second roller side, where such an influence does not occur, contributes more to the feed of the liquid crystal cell, the liquid crystal cell can be successfully fed in the process of bonding the optical film thereto. | 03-21-2013 |
20130135728 | CONTINUOUS ROLL OF OPTICAL FUNCTION FILM, METHOD OF MANUFACTURE OF LIQUID CRYSTAL DISPLAY ELEMENT EMPLOYING SAME, AND OPTICAL FUNCTION FILM LAMINATING DEVICE - An objective of the present invention is to alleviate streaky display unevenness that occurs in liquid crystal display elements when feeding optical function film from a continuous roll having score lines in the width direction thereof and bonding the optical function film on a liquid crystal panel. A continuous roll comprises an optical film laminate ( | 05-30-2013 |
20130135729 | CONTINUOUS ROLL OF OPTICAL FUNCTION FILM, METHOD OF MANUFACTURE OF LIQUID CRYSTAL DISPLAY ELEMENT EMPLOYING SAME, AND OPTICAL FUNCTION FILM LAMINATING DEVICE - An objective of the present invention is to alleviate streaky display unevenness that occurs in liquid crystal display elements when feeding optical function film from a continuous roll having score lines in the width direction thereof and bonding the optical function film on a liquid crystal panel. A continuous roll comprises an optical film laminate ( | 05-30-2013 |
20130153155 | SYSTEM FOR MANUFACTURING LIQUID CRYSTAL DISPLAY DEVICE - A system for manufacturing a liquid crystal display device, comprising a panel turning mechanism that has: a long side-supporting part for supporting the liquid crystal panel by coming into contact with an end face along at least one long side of the liquid crystal panel; and a short side-supporting part for supporting the liquid crystal panel by coming into contact with an end face along at least one short side of the liquid crystal panel and is configured to turn over the liquid crystal panel about an axis not parallel to any of the long and short sides of the liquid crystal panel in such a manner that the positional relationship between the long and short sides is reversed while both the long and short sides are supported. | 06-20-2013 |
20130163080 | METHOD FOR PRODUCING THIN POLARIZING FILM - The present invention provides a method of producing a thin polarizing film having both excellent optical characteristics and excellent in-plane uniformity. | 06-27-2013 |
20130269869 | METHOD AND SYSTEM FOR CONTINUOUSLY MANUFACTURING OPTICAL DISPLAY PANEL - A method for continuously manufacturing an optical display panel includes a velocity control step includes setting a bonding velocity and a carrier film feed velocity in such a manner that during a period from the start of the bonding of the sheet piece to the end of the bonding, the bonding velocity is higher than the carrier film feed velocity is fed and in such a manner that slack formed in the sheet piece is eliminated between the bonding position and the front end of the peeling unit; and performing control in such a manner that during a period from the start of the bonding to the end of the bonding, the distance (L) is longer than the distance (Ls), while the bonding velocity in the bonding step is higher than the velocity at which the carrier film is fed. | 10-17-2013 |
20140085723 | OPTICAL FILM ROLL SET, AND METHOD FOR PRODUCING OPTICAL FILM ROLL SET - A set of optical film rolls for use in a process including supplying films and bonding the films, in directions relatively perpendicular to one another, to an optical cell, wherein a direction in which each film is bonded to the optical cell is equal to a direction in which each film is supplied, and the films are laminated to one side of the optical cell, the set of optical film rolls includes:
| 03-27-2014 |
20140090779 | METHOD FOR CONTINUOUSLY PRODUCING OPTICAL DISPLAY PANEL, AND SYSTEM FOR CONTINUOUSLY PRODUCING OPTICAL DISPLAY PANEL - A method includes a first bonding step including providing a first polarizing film obtained by transversely cutting a first long polarizing film having an absorption axis in its longitudinal direction, supplying the first polarizing film from a first optical film roll, and bonding the first polarizing film to a back side of the optical cell while feeding the optical cell; and a second bonding step including providing a linearly polarized light separating film obtained by transversely cutting a long linearly polarized light separating film having a reflection axis in its transverse direction, supplying the linearly polarized light separating film from a second optical film roll, and bonding the linearly polarized light separating film onto the first polarizing film bonded to the back side of the optical cell, while feeding the optical cell. | 04-03-2014 |
20140124966 | METHOD AND DEVICE FOR MANUFACTURING TREATED FILM - A method for manufacturing a treated resin film from a long resin film, the method including at least treatment steps each including treating the long resin film by bringing the long resin film into contact with a treatment liquid in a treatment tank, while feeding the long resin film, wherein at least one of the treatment steps is a one-side contact step including bringing a lower surface of the resin film into contact with a surface of the treatment liquid in the treatment tank that is filled with the treatment liquid, and nip rolls are placed downstream of at least one one-side treatment tank for the one-side treatment step. The method is capable of satisfying the properties required of the treated film and also capable of reducing the occurrence of scratches, dents, and other defects. | 05-08-2014 |
20140125925 | OPTICAL LAMINATED BODY, OPTICAL LAMINATED BODY SET, AND LIQUID CRYSTAL PANEL USING OPTICAL LAMINATED BODY OR OPTICAL LAMINATED BODY SET - There is provided an optical laminate that significantly suppresses the warping of a liquid crystal panel and can realize high contrast. An optical laminate of the present invention includes: a polarizing film having a thickness of 10 μm or less; and a reflective polarization film. A liquid crystal panel of the present invention includes: a liquid crystal cell; and the optical laminate of the present invention. According to another aspect of the present invention, an optical laminate set is provided. The optical laminate set includes: a first optical laminate that is the optical laminate of the present invention as described above; and a second optical laminate including a polarizing film having a thickness larger than the thickness of the polarizing film of the first optical laminate by 5 μm or more. | 05-08-2014 |
20140378020 | MANUFACTURING METHOD FOR LIQUID CRYSTAL DISPLAY - A manufacturing method for a liquid crystal display panel includes the steps of slitting a first optical film which includes a polarizing film having an absorption axis in its width direction, the polarizing film including a polyvinyl alcohol-based resin film containing a dichromatic substance and has an Nz coefficient of 1.10 or more, and rolling the slit first optical film in its width direction; slitting a second optical film, which includes a polarizing film having an absorption axis in its longitudinal direction, and rolling the slit second optical film in its width direction; bonding the cut first optical film onto one surface of the liquid crystal cell; and bonding the cut second optical film onto another surface of the liquid crystal cell. | 12-25-2014 |
20150020960 | OPTICAL DISPLAY PANEL PRODUCTION METHOD AND OPTICAL DISPLAY PANEL PRODUCTION SYSTEM - An object of the invention is to provide a method for manufacturing an optical display panel. The method includes a feeding step including feeding an optical cell with a thickness of 0.2 mm to 1.0 mm by means of a feed roller unit arranged perpendicular to a direction in which the optical cell is fed; a bonding step including feeding a long carrier film from a continuous roll and bonding a sheet piece of the optical film to a lower surface of the optical cell with the pressure-sensitive adhesive interposed therebetween, wherein the lower surface is on a side in contact with the feed roller unit; and a rotation step including rotating the optical cell by 90° with respect to the direction in which the optical cell is fed which is bonded in the bonding step. | 01-22-2015 |
20150027626 | MANUFACTURING METHOD FOR LIQUID CRYSTAL DISPLAY - A manufacturing method for a liquid crystal display panel includes slitting a first optical film having an elongate shape, to have a width corresponding to a pair of opposing sides of a liquid crystal cell, and by rolling the slit first optical film in its width direction to have a length corresponding to another pair of opposing sides of the liquid crystal cell; slitting a second optical film having an elongate shape, to have a width corresponding to a pair of opposing sides of the liquid crystal cell, and by rolling the slit second optical film in its width direction to have a length corresponding to another pair of opposing sides of the liquid crystal cell; bonding the cut first optical film onto one surface of the liquid crystal cell; and bonding the cut second optical film onto another surface of the liquid crystal cell. | 01-29-2015 |
20150029447 | OPTICAL FILM ROLL - An optical film roll is disclosed capable of realizing excellent display characteristics while maintaining manufacturing efficiency. The optical film roll has a width corresponding to a pair of opposite sides of a liquid crystal cell and is used by being cut to a length corresponding to another pair of opposite sides of the liquid crystal cell to be continuously attached to a surface of the liquid crystal cell. The optical film roll includes a long optical film wound into a roll shape, the long optical film being obtained by subjecting a long optical raw film, which includes a polarizing film having an absorption axis in its width direction, to a slitting process in a machine direction while conveying the long optical raw film in its lengthwise direction. The polarizing film includes a polyvinyl alcohol-based resin film that contains a dichromatic substance and has an Nz coefficient of 1.10 or more. | 01-29-2015 |