KR20140010367A - Method for manufacturing liquid-crystal display elements and system for manufacturing liquid-crystal display elements - Google Patents

Abstract

Provided is a method for producing a liquid crystal display device in which the pressure-sensitive adhesive (exposure) of the adhesive between the laminated sheet pieces is not generated. A sheet laminated subsequently on two or more sheet pieces laminated on one side of the liquid crystal panel as a method for producing a liquid crystal display device in which two or more sheet pieces are laminated on the liquid crystal panel side in order for each sheet piece to form a liquid crystal display element. The film width of the optical film wound on the two or more continuous rolls is set so that each of the four sides of the convenience is smaller than the corresponding side in the laminated state among the four sides of the sheet piece laminated immediately before, and in the cutting substep The cutting interval of is set.

Description

The manufacturing method of a liquid crystal display element, and the manufacturing system of a liquid crystal display element {METHOD FOR MANUFACTURING LIQUID-CRYSTAL DISPLAY ELEMENTS AND SYSTEM FOR MANUFACTURING LIQUID-CRYSTAL DISPLAY ELEMENTS}

This invention relates to the manufacturing method of a liquid crystal display element, and a manufacturing system of a liquid crystal display element.

Patent document 1 describes the method of manufacturing a liquid crystal display element by laminating | stacking several optical films in order for every optical film in a liquid crystal panel. Specifically, the carrier film is released from the continuous roll wound around the carrier film on which the optical film is laminated, and the optical film is cut (half-cut) to a predetermined size in the film width direction leaving the carrier film to form a sheet piece. It is a manufacturing method which sticks the sheet piece which peeled the film to a liquid crystal panel, and laminates and forms the sheet piece of the next optical film sequentially on the optical film laminated | stacked on the said liquid crystal panel.

Japanese Patent Publication No. 2009-271516

In the case of the said patent document 1, in order to laminate | stack the sheet piece of several optical film sequentially, high precision bonding is calculated | required. However, in patent document 1, it is necessary to continuously convey the optical film and carrier film of the continuous wave form extracted from the continuous roll to the adhesion position with a liquid crystal panel, and the half cut processing mechanism of an optical film, and the peeling processing mechanism of a carrier film Due to the influence of various mechanical errors and control errors such as the transfer processing mechanism, the sheet piece adhesion processing mechanism, and the carrier film transfer processing mechanism of the liquid crystal panel, it was not easy to perform the lamination of the sheet pieces strictly at the plane position. In order to reduce the amount of adhesion deviating between sheets, it is also possible to slow down the manufacturing speed and cope with it. However, the lower the production speed, the lower the productivity.

For example, when lamination | stacking of sheet pieces shifts | deviates, the adhesive formed in the optical film may be exposed, and a foreign material may adhere to this exposed adhesive and may deteriorate display quality. In addition, it is also concerned that the exposed and exposed pressure-sensitive adhesive is in contact with the outside at the time of conveyance to become a pressure-sensitive adhesive mass, and the pressure-sensitive adhesive mass may be a foreign matter at the time of bonding. In addition, when the deviation is large, there is a fear that it is laminated without covering the display area of the liquid crystal panel.

And each sheet piece needs to be laminated | stacked so that it may cover at least the display area (liquid crystal cell) of a liquid crystal panel, Furthermore, it is not preferable to be laminated | stacked out of the edge of a liquid crystal panel. When a sheet piece protrudes from the tip of a liquid crystal panel and is laminated | stacked, it is necessary to cut off the protruding part.

This invention is made | formed in view of said situation, and the manufacturing method of the liquid crystal display element which made it not generate | occur | produce (expose) the adhesive between the sheet pieces laminated | stacked in consideration of the adhesion shift amount, without slowing down a manufacturing speed, and Provided is a manufacturing system for a liquid crystal display device.

In order to solve the above problems, as a result of intensive studies, the present invention has been completed as follows.

This invention is a carrier film conveyance substep which conveys the said carrier film from the continuous roll which winds up the carrier film in which the optical film of the predetermined film width containing an adhesive is laminated | stacked, and leaves the said carrier film, From the said carrier film, the cutting substep which cut | disconnects the said optical film at a predetermined | prescribed cutting interval in the film width direction orthogonal, and forms the sheet piece of an optical film, the conveyance substep which conveys a liquid crystal panel, and the said liquid crystal panel Two or more sheet pieces are laminated | stacked by the said two or more sheet piece laminating step, including two or more sheet piece laminating steps of the optical film containing the adhesive substep which laminates the said peeled sheet piece to the said liquid crystal panel side via the said adhesive. The liquid which laminates a piece to the liquid crystal panel side in order for every sheet piece, and forms a liquid crystal display element. As a manufacturing method of a positive display element,

In the two or more sheet pieces laminated on one side of the liquid crystal panel, each of the four sides of the subsequently stacked sheet pieces is smaller than the corresponding side in the laminated state among the four sides of the sheet pieces stacked immediately before. The film width of the optical film wound on the continuous roll is set, and the cutting interval in the cutting substep is set.

In this structure, in consideration of adhesion misalignment, each of the four sides of the sheet pieces on the side laminated next (after) is smaller than the corresponding side in the laminated state among the four sides of the sheet pieces stacked immediately before, in order. No sticking (exposure) of the adhesive between the sheet pieces to be laminated also occurs.

In the said invention, the side corresponded to the film width of the optical film wound by the said continuous roll in the said sheet piece is called a 1st side, and orthogonal to the said 1st side, and removes the side corresponded to the length of the said cutting | disconnection interval. 2 sides,

The first side of the next sheet piece to be stacked next corresponds to the first side of the previous sheet piece to be stacked first, and the second side of the next sheet piece corresponds to the second side of the immediately preceding sheet piece, so as to correspond to the first side. A first lamination process (first sheet piece laminating step) in which the next sheet piece is laminated on a sheet piece,

Immediately before the first side of the next sheet piece to be laminated, the second side of the next sheet piece to be stacked corresponds to the first side of the immediately preceding sheet piece, and the first side of the next sheet piece corresponds to the second side of the immediately preceding sheet piece. You may perform both with the 2nd lamination process (2nd sheet piece lamination step) in which the said next sheet piece is laminated | stacked on a sheet piece, or may perform either lamination process. The order of the first lamination process and the second lamination process is not particularly limited. In addition, after performing the 1st lamination process once or once or more, you may perform the 2nd lamination process once or once or vice versa. In addition, the second stacking process may be performed during the first stacking process performed a plurality of times, or vice versa.

As one Embodiment of the said invention, the said sheet piece WHEREIN: The side corresponded to the film width of the optical film wound by the said continuous roll is called a 1st side, and is orthogonal to the said 1st side, and corresponds to the length of the said cutting | disconnection interval. When the side to be called is a 2nd side, the said 1st side of the next sheet piece laminated | stacked corresponds with respect to the said 1st side of the immediately previous sheet piece laminated | stacked, and the said next sheet | seat with respect to the said 2nd side of the said immediately previous sheet piece. The next sheet piece is laminated on the immediately preceding sheet piece so that the second side of the bias corresponds,

In the two or more sheet pieces laminated | stacked on one side of the said liquid crystal panel, in the said 2 or more continuous rolls so that the film width of the sheet piece laminated | stacked first is the largest, and the film width which is the sheet piece laminated | stacked afterwards may become small one by one. The film width of the wound optical film is set,

The said optical film is cut | disconnected in the said cutting substep so that the cutting interval of the sheet piece laminated | stacked initially at the said cutting substep is largest, and the cutting interval of the sheet piece laminated | stacked after this is sequentially small, and a sheet piece is formed.

In this configuration, the film width and the predetermined cutting interval (the length in the direction orthogonal to the film width direction) of the sheet piece first laminated on the liquid crystal panel are the largest, and the film width and the predetermined cutting interval of the second and subsequent sheet pieces are the largest. By sequentially decreasing the size, the sheet pieces after the second sheet are not protruded from the sheet pieces stacked earlier, and are not laminated, so that the pressure-sensitive adhesive (exposure) between the laminated sheet pieces is not generated.

It is preferable to measure the adhesion shift amount which arises by the machine etc. error of each sheet piece laminating apparatus beforehand, and to set the film width and cutting | disconnection space | interval of a sheet piece so that it may become smaller than the adhesion shift amount.

As an embodiment of the present invention, the liquid crystal panel in which the sheet pieces are laminated by the adhesive substep is horizontally rotated 90 ° with respect to the conveying direction of the liquid crystal panel before laminating the next sheet piece by the next adhesive substep. Further comprising a rotation process,

The said sheet piece WHEREIN: The side corresponded to the film width of the optical film wound by the said continuous roll is called a 1st side, and the side orthogonal to the said 1st side and corresponded to the length of the said cutting interval is called said 2nd side. When doing so, the second side of the next sheet piece corresponds to the first side of the immediately preceding sheet piece laminated before the horizontal rotation step, and the first side of the next sheet piece corresponds to the second side of the immediately preceding sheet piece. The next sheet piece is laminated on the immediately preceding sheet piece,

The film width of the optical film wound around the continuous roll for forming the next sheet piece is set so that the first side of the next sheet piece becomes smaller than the second side of the immediately preceding sheet piece,

The cutting interval is set so that the second side of the next sheet piece is smaller than the first side of the immediately preceding sheet piece, and the optical film is cut at the cutting substep based on the cutting gap to form the next sheet piece. .

In this structure, as shown in FIG.6, FIG.7, after the adhesion process of the immediately preceding sheet piece, a liquid crystal panel is rotated 90 degrees horizontally with respect to the conveyance direction D, and the next sheet piece is adhesively processed. As the film width (first side) of the next sheet piece is smaller than the cutting interval (second side) of the immediately preceding sheet piece, the cutting interval (second side) of the next sheet piece is smaller than the film width (first side) of the immediately preceding sheet piece. There is no protruding of the next sheet piece, and the protruding (exposure) of the adhesive between the sheet pieces to be laminated also does not occur. In the present invention, "90 degrees" of "90 degrees horizontal rotation" includes a variation range.

Moreover, it is preferable that the area of all the sheet pieces laminated | stacked on a liquid crystal panel is more than the display area (liquid crystal cell area) of a liquid crystal panel, and it is below the surface area of a liquid crystal panel. Moreover, it is preferable that the film width and cutting | disconnection interval of the sheet piece of the outermost surface laminated | stacked on a liquid crystal panel are set based on the display area (liquid crystal cell area) and adhesion shift amount of a liquid crystal panel. The amount of adhesion shift | deviation is the sheet piece at the time of adhesion with respect to the X direction shift amount which is the conveyance direction of a liquid crystal panel, the Y direction shift amount (film width direction) of the direction orthogonal to a X direction, and the conveyance direction axis (X axis) of a liquid crystal panel. Θ shift amount and the like which are rotation shift shifts of the feed direction axis are exemplified.

As one Embodiment of the said invention, the adhesion substep of the said sheet piece lamination | stacking step for laminating | stacking the sheet piece after 2nd sheet | seat is the central axis of the width direction center axis line of the 1st sheet piece, and the direction orthogonal to the width direction It is preferable to stack the sheet pieces so that the crossing lines of the lines and the crossing lines of the central axis line in the width direction of the second and subsequent sheet pieces and the central axis line in the direction orthogonal to the width direction coincide with each other (FIGS. 4A to 4C). Reference). By this structure, since sheet pieces can be laminated | stacked so that the crossing line of sheet pieces may coincide or substantially coincide, the sheet piece laminated | stacked next does not protrude from the sheet piece laminated | stacked immediately before.

In order to laminate | stack so that the intersecting line of sheet pieces may correspond, it is preferable to stick and arrange the laminated sheet piece on the basis of the alignment mark attached to the liquid crystal panel, or the edge part or corner part of a liquid crystal panel. The distance from the alignment mark or the like to the end line of the sheet piece increases in proportion to the order of the stacked sheet pieces. That is, all the sheet pieces laminated can be bonded by the alignment method of the panel reference | standard based on the alignment mark etc. of a panel. Moreover, as another alignment system, the alignment system of the sheet piece reference | standard can be employ | adopted. In the alignment method based on this sheet piece, the first sheet piece to be laminated is aligned and bonded to each other based on an alignment mark or the like, and the sheet pieces to be laminated after the second sheet are the ends of the sheet pieces bonded one sheet earlier than that or It is a method of aligning and joining corner parts. The alignment method of the sheet piece reference | standard is preferable because it can join in the sheet piece bonded more reliably earlier than the alignment method of a panel reference | standard.

As one Embodiment of the said invention, it is preferable that the said 2 or more sheet piece laminating step is performed continuously. Thereby, since the liquid crystal display element which laminates the sheet piece of an optical film sequentially on a liquid crystal panel can be manufactured continuously, productivity can be improved. In addition, as another embodiment, two sheet piece laminating steps may be performed continuously, and one or more sheet piece laminating steps may be performed continuously after that.

Moreover, as one Embodiment of the said invention, one of the said optical films is a two-color polarizing film, and the other of the optical films is a reflective polarizing film,

The sheet piece laminating step of a two-color polarizing film laminates the sheet piece of the said two-color polarizing film to the said liquid crystal panel,

In the sheet piece laminating step of the reflective polarizing film, the sheet piece of the reflective polarizing film is the two-color polarizing film so that the transmission axis of the sheet piece of the two-color polarizing film and the transmission axis of the sheet piece of the reflective polarizing film are in the same direction. The sheet piece of the said reflective polarizing film is laminated | stacked on the said liquid crystal panel by sticking to the sheet piece of. In this structure, it is preferable that the said bipolar polarizing film to which the said reflective polarizing film and the said reflective polarizing film adheres has a transmission axis in the longitudinal direction orthogonal to a film width direction.

Thereby, the bicolor polarizing film which has a transmission axis in a longitudinal direction (MD direction) and an absorption axis in a film width direction can be used. Since the transmission axis of a two-color polarizing film is in the longitudinal direction (MD direction), and the transmission axis of a reflective polarizing film is in the longitudinal direction (MD direction), the conveyance direction of a two-color polarizing film, a reflective polarizing film, and a liquid crystal panel Since it can be made into the same direction, a manufacturing line can be made into a straight line, without employing complicated mechanisms, such as a rotating mechanism.

Moreover, as one Embodiment of the said invention, after laminating the sheet piece of a two-color polarizing film on both surfaces of the said liquid crystal panel by the sheet piece lamination step of two said two-color polarizing films, the said liquid crystal panel is optically inspected. Further comprising an inspection step,

The sheet piece lamination step of a reflective polarizing film is a transmission axis direction and the reflection polarization of the sheet piece of the said two-color polarizing film to the sheet piece of the two-color polarizing film laminated | stacked on one side of the said liquid crystal panel after the test by the said inspection step. The sheet piece of the said reflective polarizing film is stuck so that the transmission axis direction of the sheet piece of a film may be the same. Thereby, a reflective polarizing film is laminated | stacked on a liquid crystal panel through a two-color polarizing film.

In this structure, before laminating | stacking a reflective polarizing film, the liquid crystal panel which laminated | stacked the two-color polarizing film on both surfaces was examined, the reflective polarizing film was laminated | stacked on the liquid crystal panel judged by good quality, and a reflective polarizing film was carried out to the liquid crystal panel where the defective article was determined. Since it is not necessary to laminate, the yield of the reflective polarizing film is increased.

Moreover, another invention is the length of an optical film leaving the carrier film conveying means which conveys the said carrier film, and the said carrier film from the continuous roll which winds up the carrier film in which the optical film of the predetermined film width containing an adhesive was laminated | stacked. Cutting means for cutting the optical film at a predetermined cutting interval in a film width direction orthogonal to a direction to form a sheet piece of the optical film, a conveying means for conveying a liquid crystal panel, and the carrier film while conveying the liquid crystal panel. Two or more sheet pieces are provided with the sheet piece lamination apparatus of the optical film provided with the adhesive means which laminates the said peeled sheet piece to the said liquid crystal panel side via the said adhesive, and the said two or more sheet piece lamination apparatus The liquid crystal display element which forms a liquid crystal display element by laminating | stacking on the liquid crystal panel side in order for every sheet piece As a manufacturing system of the above, in two or more sheet pieces laminated on one side of the liquid crystal panel, each of the four sides of the sheet pieces to be laminated next is smaller than the corresponding side in the laminated state among the four sides of the sheet pieces stacked immediately before. The film width of the optical film wound around the two or more continuous rolls is set, and the said cutting | disconnection gap in the said cutting means is set.

In this structure, in consideration of adhesion misalignment, each of the four sides of the sheet pieces on the side laminated next (after) is smaller than the corresponding side in the laminated state among the four sides of the sheet pieces stacked immediately before, in order. No sticking (exposure) of the adhesive between the sheet pieces to be laminated also occurs.

As one Embodiment of the said invention, the said sheet piece WHEREIN: The side corresponded to the film width of the optical film wound by the said continuous roll is called a 1st side, and is orthogonal to the said 1st side, and corresponds to the length of the said cutting | disconnection interval. When the side to be called is a 2nd side, the said 1st side of the next sheet piece laminated | stacked corresponds with respect to the said 1st side of the immediately previous sheet piece laminated | stacked, and the said next sheet | seat with respect to the said 2nd side of the said immediately previous sheet piece. The next sheet piece is laminated on the immediately preceding sheet piece so that the second side of the bias corresponds,

In the two or more sheet pieces laminated | stacked on one side of the said liquid crystal panel, it winds up to the said 2 or more continuous rolls so that the film width of the sheet piece laminated | stacked initially is largest, and the film width of the sheet piece laminated | stacked afterwards may become small sequentially. The film width of the optical film which there is is set,

The cutting means of the sheet piece laminating apparatus cuts the optical film to form a sheet piece so that the cutting interval of the sheet piece to be laminated first is the largest, and the cutting interval of the sheet piece to be subsequently laminated is sequentially reduced.

In this structure, the film width and cutting interval (length in the direction orthogonal to the width direction) of the sheet piece laminated | stacked initially on a liquid crystal panel are made into the largest, and the film width and cutting gap of the sheet piece after the 2nd sheet are made small sequentially The sheet pieces after the second sheet are not protruded from the sheet pieces laminated before that, and the laminated sheets are not laminated, and the sticking of the adhesive between the stacked sheet pieces does not occur (exposure).

Moreover, as one Embodiment of the said invention, you may have a control part which controls the cutting means and carrier film conveying means of two or more said sheet piece laminating apparatus. The control part controls all the cutting means and the carrier film conveying means so that the cutting interval of the sheet piece laminated | stacked first is the largest, and the cutting interval of the sheet piece laminated | stacked afterwards becomes small sequentially.

It is preferable to measure the adhesion shift amount which arises by the machine etc. error of each sheet piece laminating apparatus beforehand, and to set the film width and cutting | disconnection space | interval of a sheet piece so that it may become smaller than the adhesion shift amount. These cutting intervals are previously memorize | stored in the memory of a control part, and a control part controls the feed amount of a carrier film, and a cutting means so that it may cut | disconnect at this cutting interval. You may measure a conveyance amount by detection of the encoder which measures the rotation amount of feed rollers etc. which comprise a part of carrier film conveyance means, for example.

Moreover, as one Embodiment of the said invention, the horizontal which rotates 90 degrees horizontally with respect to the conveyance direction of the said liquid crystal panel before laminating | stacking the liquid crystal panel by which the sheet piece was laminated | stacked by the said adhesion means by the next adhesive means. With more rotating parts,

In the said sheet piece, the side corresponded to the film width of the optical film wound by the said continuous roll was called the 1st side, and the side orthogonal to the said 1st side, and corresponded to the length of the said cutting | disconnection gap was called the said 2nd side. At this time, the second side of the next sheet piece corresponds to the first side of the immediately preceding sheet piece laminated before the rotation by the horizontal rotating part, and the first side of the next sheet piece is different relative to the second side of the immediately preceding sheet piece. Correspondingly, the next sheet piece is laminated on the immediately preceding sheet piece,

The film width of the optical film wound around the continuous roll for forming the next sheet piece is set so that the first side of the next sheet piece becomes smaller than the second side of the immediately preceding sheet piece,

The cutting interval is set so that the second side of the next sheet piece is smaller than the first side of the immediately preceding sheet piece, and the cutting means cuts the optical film based on the cutting gap to form the next sheet piece. .

In this structure, as shown in FIG.6, FIG.7, after the adhesion process of the immediately preceding sheet piece, a liquid crystal panel is rotated 90 degrees horizontally with respect to the conveyance direction D, and the next sheet piece is adhesively processed. As the film width (first side) of the next sheet piece is smaller than the cutting interval (second side) of the immediately preceding sheet piece, the cutting interval (second side) of the next sheet piece is smaller than the film width (first side) of the immediately preceding sheet piece. There is no protruding of the next sheet piece, and the protruding (exposure) of the adhesive between the sheet pieces to be laminated also does not occur.

As one Embodiment of the said invention, the adhesion means of the said sheet piece laminating apparatus for laminating | stacking the sheet piece after a 2nd sheet is the center of the film width direction center axis line of the 1st sheet piece, and the direction orthogonal to the film width direction It is preferable to laminate | stack the said sheet piece so that the intersection line of the axial line and the cross section of the film width direction center axis line of the sheet piece after 2nd sheet | seat, and the center axis line of the direction orthogonal to the film width direction may correspond. By this structure, since sheet pieces can be laminated | stacked so that the crossing line of sheet pieces may coincide or substantially coincide, the sheet piece laminated | stacked next does not protrude from the sheet piece laminated | stacked immediately before.

The adhesive means can apply any of the alignment method of the said panel reference | standard, and the alignment method of a sheet piece reference | standard, and can stick a sheet piece.

Moreover, as one Embodiment of the said invention, the said 2 or more sheet piece laminating apparatus is arrange | positioned in a continuous manufacturing line. Thereby, since the liquid crystal display element which laminates the sheet piece of an optical film sequentially on a liquid crystal panel can be manufactured continuously, productivity can be improved. Moreover, as another embodiment, you may arrange | position two sheet piece laminating apparatus on a continuous manufacturing line, and may arrange | position one or more sheet piece laminating apparatus different from this to another (continuous) manufacturing line.

Moreover, as one Embodiment of the said invention, one of the said optical films is a two-color polarizing film, and one of the other optical films is a reflective polarizing film,

The sheet piece laminating apparatus of a two-color polarizing film laminates the sheet piece of the said two-color polarizing film to the said liquid crystal panel,

The sheet piece laminating device of the said reflection polarizing film is made into the said 2 color polarizing film so that the transmission axis of the sheet piece of the said two-color polarizing film and the transmission axis of the sheet piece of the said reflection polarizing film may become the same direction. The sheet piece of the said reflective polarizing film is laminated | stacked on the said liquid crystal panel by sticking to the sheet piece of. In this structure, it is preferable that the said bipolar polarizing film to which the said reflective polarizing film and the said reflective polarizing film adheres has a transmission axis in the longitudinal direction orthogonal to a film width direction.

Thereby, the bicolor polarizing film which has a transmission axis in a longitudinal direction (MD direction) and an absorption axis in a film width direction can be used. Since the transmission axis of a two-color polarizing film and a reflective polarizing film is set to the longitudinal direction (MD direction), the conveyance direction of a two-color polarizing film, a reflective polarizing film, and a liquid crystal panel can be made into the same direction, and a rotation mechanism etc. The production line can be a straight line without employing a complicated mechanism.

Moreover, as one Embodiment of the said invention, it is a sheet piece laminating apparatus of two said two-color polarizing films, and after laminating the sheet piece of a two-color polarizing film on both surfaces of the said liquid crystal panel, optically inspecting the said liquid crystal panel. Have more inspection devices,

The sheet piece laminating apparatus of the said reflective polarizing film is a transmission axis direction and reflection of the sheet piece of the said two-color polarizing film to the sheet piece of the two-color polarizing film laminated | stacked on one side of the said liquid crystal panel after the test | inspection by the said inspection apparatus. The sheet piece of the said reflective polarizing film is stuck so that the transmission axis direction of the sheet piece of a polarizing film may become the same. Thereby, a reflective polarizing film is laminated | stacked on a liquid crystal panel through a two-color polarizing film.

In this structure, before laminating | stacking a reflective polarizing film, the liquid crystal panel which laminated | stacked the two-color polarizing film on both surfaces was examined, the reflective polarizing film was laminated | stacked on the liquid crystal panel judged by good quality, and a reflective polarizing film was carried out to the liquid crystal panel where the defective article was determined. Since it solves without laminating, the yield of a reflective polarizing film becomes high.

Moreover, another this invention is a carrier film conveyance substep which conveys the said carrier film from the continuous roll which the sheet piece of the optical film of the predetermined film width containing an adhesive winds adjacently stacked in multiple numbers, and a liquid crystal panel The sheet piece lamination step of the optical film containing the conveyance substep which conveys the said, and the adhesive substep which laminates the said sheet piece peeled from the said carrier film to the said liquid crystal panel side via the said adhesive agent, conveying the said liquid crystal panel. It is a manufacturing method of the liquid crystal display element which includes two or more, and forms two or more sheet pieces by the said two or more sheet piece laminating step in order for every sheet piece on the liquid crystal panel side, and forms a liquid crystal display element, In two or more sheet pieces laminated on one side, each of the four sides of the sheet piece laminated next is directly Of the sheet stacked on the four sides convenience, is smaller than the corresponding side in the laminated structure, the length in a direction perpendicular to the rolled sheet width and convenience film that the film width of the optical film in at least two successive roll is set. Thereby, since the so-called continuous roll containing a perforated line can be used, the cutting substep as mentioned above can be omitted.

As one Embodiment of the said invention, in the said sheet piece, the side corresponded to the film width of the sheet piece of the optical film wound by the said continuous roll is called 1st side, and corresponds to the length of the direction orthogonal to the film width. When a side is called a 2nd side, the said 1st side of the next sheet piece laminated | stacked next corresponds with respect to the said 1st side of the immediately previous sheet piece laminated | stacked, and with respect to the said 2nd side of the immediately preceding sheet piece, The next sheet piece is laminated on the immediately preceding sheet piece so that the second side corresponds, and in two or more sheet pieces laminated on one side of the liquid crystal panel, the film width of the sheet piece first laminated and the direction perpendicular to the film width Is rolled up to the two or more continuous rolls so that the length of is largest, and the film width of the sheet piece laminated | stacked after this and the length of the direction orthogonal to the film width become small sequentially. The film width of the sheet piece of an optical film and the length of the direction orthogonal to this film width are set.

As an embodiment of the present invention, the liquid crystal panel in which the sheet pieces are laminated by the adhesive substep is horizontally rotated 90 ° with respect to the conveying direction of the liquid crystal panel before laminating the next sheet piece by the next adhesive substep. Further comprising a rotation process,

In the said sheet piece, when the side corresponded to the film width of the optical film wound by the said continuous roll to a 1st side, and the side corresponded to the length of the direction orthogonal to the said film width, said said 2nd side, Immediately before the first side of the next sheet piece corresponding to the second side of the next sheet piece corresponding to the first side of the previous sheet piece stacked before the horizontal rotation step, and corresponding to the second side of the immediately preceding sheet piece. The film width | variety of the sheet piece of the optical film wound by the said continuous roll is set so that the said next sheet piece is laminated | stacked on a sheet piece, and the said 1st side of the next sheet piece becomes smaller than the said 2nd side of the immediately preceding sheet piece, The length of the direction orthogonal to the film width of the sheet piece of the optical film wound by the said continuous roll so that the said 2nd side of a sheet piece may become smaller than the said 1st side of the said immediately preceding sheet piece It is positive.

Moreover, another this invention is carrier film conveyance means which conveys the said carrier film from the continuous roll which the sheet piece of the optical film of the predetermined film width containing an adhesive winds adjacently stacked in multiple numbers, and a liquid crystal panel Two or more sheet piece laminating apparatuses of the optical film provided with the conveyance means to convey and the adhesive means which laminates the said sheet piece peeled from the said carrier film on the said liquid crystal panel side via the said adhesive agent, conveying the said liquid crystal panel. And a manufacturing system of a liquid crystal display element in which two or more sheet pieces are laminated on the liquid crystal panel side in order for each sheet piece by the two or more sheet piece laminating apparatuses to form a liquid crystal display element, on one side of the liquid crystal panel. In two or more sheet pieces to be laminated, each of the four sides of the sheet pieces to be laminated next is laminated immediately before Of the bit four sides convenience, is smaller than the corresponding side in the laminated structure, the length in a direction perpendicular to the rolled sheet width and convenience film that the film width of the optical film in at least two successive roll is set. Thereby, since the so-called continuous roll containing a perforated line can be used, the cutting substep as mentioned above can be omitted.

As one Embodiment of the said invention, the side corresponded to the film width of the sheet piece of the optical film wound by the said continuous roll in the said sheet piece is called the 1st side, and the side corresponded to the length of the direction orthogonal to the said film width. Is a second side, the first side of the next sheet piece to be laminated corresponds to the first side of the immediately preceding sheet piece, and the second side of the immediately preceding sheet piece corresponds to the first side of the next sheet piece. In the direction of orthogonal to the film width and the film width of the sheet piece initially laminated | stacked in the 2 or more sheet pieces laminated | stacked on the immediately preceding sheet piece, and laminated | stacked on one side of the said liquid crystal panel so that a 2nd side may correspond. It is wound by the said 2 or more continuous rolls so that the length is largest and the film width of the sheet piece laminated | stacked afterwards, and the length of the direction orthogonal to the film width become small sequentially. The sheet convenience film width and the film width of the optical film and the length of the orthogonal direction to be set.

As one embodiment of the present invention, the horizontal rotating portion for rotating the liquid crystal panel in which the sheet pieces are laminated by the adhesive means is rotated 90 ° horizontally with respect to the conveying direction of the liquid crystal panel before laminating the next sheet piece by the next adhesive means. The sheet piece further includes a side corresponding to the film width of the optical film wound around the continuous roll as a first side, and a side corresponding to a length in a direction orthogonal to the film width is referred to as the second side. The second side of the next sheet piece corresponds to the first side of the immediately preceding sheet piece laminated before the rotation by the horizontal rotating part, and the first side of the next sheet piece is relative to the second side of the immediately preceding sheet piece. The next sheet piece is laminated on the immediately preceding sheet piece so that the sides correspond, and the first side of the next sheet piece becomes smaller than the second side of the immediately preceding sheet piece. The film width of the sheet piece of the optical film wound on the continuous roll is set so that the film width of the sheet piece of the optical film wound on the continuous roll is set, and the second side of the next sheet piece is smaller than the first side of the immediately preceding sheet piece. The length in the direction orthogonal to the width is set.

Moreover, as one Embodiment of any one of said manufacturing methods, the said sheet piece laminating step further includes the film | membrane inspection substep which inspects an optical film,

It is preferable that the said cutting substep cuts the said optical film according to the inspection result of a film inspection substep. Inspection means inspection about the fault of an optical film. Moreover, when cut | disconnecting an optical film according to a test result, it can be comprised so that a defect part may be cut | disconnected. It is preferable to cut | disconnect a fault part to predetermined size as a defective article, and to exclude it, for example with an exclusion apparatus etc. so that it may not adhere to a liquid crystal panel.

Moreover, in said embodiment, in the said film | membrane inspection substep, the said optical film is inspected in the state which peeled the said carrier film from the said optical film, and after a test | inspection, a carrier film is interposed the said optical film via the said adhesive. It is preferable to join to. Thereby, the defect inspection of an optical film can be performed, without having to consider the faults, such as the phase difference inherent in a carrier film, and the foreign material and a flaw which are affixed or inherent in a carrier film.

Moreover, in said embodiment, the said cutting substep cuts the optical film judged as defective goods as a result of the test | inspection of a film inspection substep, and removes the exclusion substep which excludes the sheet piece of the optical film judged defective goods. It is preferable to have more. In the case where defectiveness is determined in the defect inspection, the sheet piece containing the defectiveness determined defect is cut, for example, cut into a predetermined size to avoid a defect portion of the optical film (sometimes referred to as a skip cut). Excluded (removed) by the exclusion device. Thereby, the yield of an optical film improves significantly.

1 is a flowchart of a manufacturing method of the liquid crystal display device according to the first embodiment.
2 is a flowchart of a manufacturing method of the liquid crystal display device according to the second embodiment.
3 is a view for explaining a manufacturing system for a liquid crystal display device according to the first embodiment.
It is a schematic diagram of the state which laminated | stacked the 1st sheet piece in Embodiment 1 on the liquid crystal panel.
It is a schematic diagram of the state which laminated | stacked the 2nd sheet piece in Embodiment 1 on the liquid crystal panel.
It is a schematic diagram of the state which laminated | stacked the 1st sheet | seat and the 2nd sheet piece on liquid crystal panel in Embodiment 1. FIG.
FIG. 5 is a diagram for explaining a manufacturing system for a liquid crystal display device according to the second embodiment. FIG.
It is a figure for demonstrating the manufacturing system of the liquid crystal display element of Embodiment 3. FIG.
It is a schematic diagram of the state which laminated | stacked the 1st sheet piece in Embodiment 3 on the liquid crystal panel.
It is a schematic diagram of the state which laminated | stacked the 2nd sheet piece on Embodiment 3 (the liquid crystal panel was laminated | stacked after 90 degree horizontal turning) in Embodiment 3, and FIG.
It is a schematic diagram of the state which laminated | stacked the sheet piece of the 1st sheet and the 2nd sheet in the liquid crystal panel in Embodiment 3. FIG.
It is a figure for demonstrating the film width and cutting | disconnection spacing of an optical film.

The optical film may be one including an adhesive layer in the outermost layer, and may be a single layer optical film or a laminated optical film in which an optical film is laminated. Moreover, the structure which the other film member was laminated | stacked on the optical film may be sufficient. Moreover, as an optical film, a polarizer and a polarizing film are mentioned, for example, The polarizing film consists of a polarizer protective film laminated | stacked on a polarizer and its both surfaces or one side. Moreover, the surface protection film for protecting a polarizer or a polarizing film from the damage of a transport phase, etc. may be laminated | stacked. Moreover, as another optical film, optical compensation films, such as a retardation film and a brightness improving film, are illustrated. As a laminated optical film, the retardation film and / or the brightness improving film may be laminated | stacked on a polarizer or a polarizing film.

As a polarizing film, a 2-color polarizing film is mentioned, for example. The two-color polarizing film is a step of drying a polyvinyl alcohol-based film subjected to (A) dyeing, crosslinking and stretching to obtain a polarizer, (B) a step of bonding a protective layer to one or both sides of the polarizer, and (C) It is manufactured by the manufacturing method including the process of heat processing after bonding. Each process of dyeing, crosslinking, and extending | stretching of a polyvinyl alcohol-type film may be performed simultaneously, without needing to carry out separately, and each process order may also be arbitrary. Moreover, you may use the polyvinyl alcohol-type film which performed the swelling process as a polyvinyl alcohol-type film. Generally, the polyvinyl alcohol-based film is immersed in a solution containing iodine or a dichroic dye, adsorbed and dyed by adsorbing the iodine or a dichroic dye, and drawn in a solution containing boric acid, borax, or the like. It uniaxially stretches by 7 times, and it drys. After stretching in a solution containing iodine or a dichroic dye, further stretching (two-stage stretching) in a solution containing boric acid, borax, and the like, and then drying to increase the orientation of the iodine to improve the polarization degree characteristics. Particularly preferred.

As a brightness enhancement film, the reflective polarizing film which has a reflection axis and a transmission axis is mentioned, for example. The reflective polarizing film is obtained by laminating and stretching a plurality of polymer films A and B of two different materials, for example, alternately. The refractive index of only the material A increases and changes in the stretching direction, birefringence is expressed, the stretching direction with the difference in refractive index of the material AB interface becomes the reflection axis, and the direction in which the refractive index difference does not occur (non-stretching direction) becomes the transmission axis.

Moreover, although the adhesive in particular in an optical film is not restrict | limited, For example, an acrylic adhesive, silicone pressure sensitive adhesive, a urethane type adhesive etc. are mentioned. As a carrier film, films, such as a plastic film (for example, a polyethylene terephthalate film, a polyolefin film, etc.), can be used. Moreover, as needed, suitable things, such as a silicone type | system | group, a long-chain alkyl type, the thing coat-processed by appropriate peeling agents, such as a fluorine type and molybdenum sulfide, can be used.

(Optical film and continuous roll)

In the present embodiment, the form in which the optical film is formed on the carrier film is not particularly limited. For example, you may be comprised by the continuous roll wound by roll shape. As a continuous roll, the thing which wound the optical film laminated body which has (1) carrier film and an optical film containing the adhesive formed on the said carrier film in roll shape is mentioned, for example. In this case, in order to form the sheet piece of an optical film from an optical film, the manufacturing system of a liquid crystal display element cut | disconnects the said optical film (including an adhesive) at predetermined | prescribed cutting intervals, without cutting | disconnecting a carrier film. Cutting means). In this cutting | disconnection, cutting may be performed so that the sheet piece of a good article and the sheet piece of a defective article may be distinguished, for example based on the inspection result of the defect inspection apparatus in a manufacturing system.

Moreover, as a continuous roll, (2) wound the optical film laminated body which has a sheet piece of the optical film containing the carrier film and the adhesive formed on the said carrier film in roll shape (so-called of an optical film with a cut line) Continuous rolls').

(Liquid crystal display element)

The liquid crystal display element is a sheet piece of at least (two-color) polarizing film formed on one side or both sides of a liquid crystal panel, and a drive circuit is incorporated as needed. The liquid crystal panel can use arbitrary types, such as a vertical alignment (VA) type and an in-plane switching (IPS) type, for example. The liquid crystal panel 4 shown in FIG. 1 has a structure in which a liquid crystal layer is sealed between a pair of substrates (first substrate and second substrate) that are arranged to face each other.

[Embodiment 1]

(Method of Manufacturing Liquid Crystal Display Element)

Embodiment 1 is demonstrated below. The manufacturing method of a liquid crystal display element is optical, leaving the carrier film conveyance substep which conveys the said carrier film from the continuous roll which winds the carrier film which the optical film of the predetermined film width containing an adhesive is laminated, and the said carrier film. The cutting substep which cut | disconnects the said optical film at predetermined cutting | disconnection interval in the film width direction orthogonal to the longitudinal direction of a film, and forms the sheet piece of an optical film, the conveyance substep which conveys a liquid crystal panel, and the said liquid crystal panel are conveyed While including the sheet piece lamination step of the optical film containing the adhesive substep which laminates the said sheet piece peeled from the said carrier film to the said liquid crystal panel side via the said adhesive agent, The said two or more sheet piece lamination step is included. Thereby, two or more sheet pieces are laminated on the liquid crystal panel side in order for each sheet piece, and the liquid crystal table To form a device. And in the two or more sheet pieces laminated | stacked on one side of the said liquid crystal panel, the 2 or more continuous rolls so that the film width of the sheet piece laminated | stacked first is largest, and the film width of the sheet piece laminated | stacked afterwards may become small sequentially. The film width of the optical film wound around is set. The said cutting substep is performed so that the cutting | disconnection gap of the sheet piece laminated | stacked initially at the said cutting substep will be largest, and the cutting interval of the sheet piece laminated | stacked after this becomes small sequentially. In this embodiment, in the sheet piece, a side corresponding to the film width of the optical film wound on the continuous roll is called a first side, and a side corresponding to the length of the cutting interval orthogonal to the first side is second. When it is a side, the said 1st side of the next sheet piece laminated | stacked corresponds with respect to the said 1st side of the immediately previous sheet piece laminated | stacked, and the said 2nd side of the said next sheet piece with respect to the said 2nd side of the said immediately previous sheet piece. Correspondingly, the next sheet piece is laminated on the immediately preceding sheet piece.

Below, one of the optical films is a two-color polarizing film, and one of the other optical films is demonstrated as a reflective polarizing film. In addition, the optical film laminated | stacked on a liquid crystal panel is not limited to this, Another optical film may be sufficient, and the 3rd (after) optical film may also be laminated by the same sheet piece lamination step.

The sheet piece laminating step of a two-color polarizing film laminates the sheet piece of a two-color polarizing film to a liquid crystal panel, The sheet piece laminating step of a reflective polarizing film makes the sheet piece of a reflective polarizing film the sheet piece of the said two-color polarizing film Lay on. In this case, a two-color polarizing film and a reflective polarizing film are demonstrated as having a transmission axis in the longitudinal direction orthogonal to the said film width direction. In addition, in this embodiment, the sheet piece lamination step of a two-color polarizing film and the sheet piece lamination step of a reflective polarizing film are performed continuously.

The flowchart of an example of the manufacturing method of a liquid crystal display element is shown in FIG. The sheet piece laminating step of the 2 color polarizing film laminated | stacked on a liquid crystal panel initially is demonstrated. The continuous roll of a 2 color polarizing film is prepared (S1). Film width W1 of a two-color polarizing film is larger than film width W2 of the reflective polarizing film laminated | stacked on this two-color polarizing film (W1> W2). A two-color polarizing film and a carrier film are unwound from a continuous roll and conveyed to a downstream side (carrier film conveyance substep, S2). As this conveying means, it is comprised, for example by a feed roller, a tension roller, a dancer roller, the sensor for detecting a conveyance amount, the control part which controls those conveyance speeds, an conveyance amount, etc.

The said 2 color polarizing film is cut | disconnected by predetermined | prescribed cutting | interval L1 in the film width direction orthogonal to the longitudinal direction of a 2 color polarizing film leaving a carrier film, and a sheet piece of a 2 color polarizing film is formed (cutting substep, S3). As a cutting means, a laser device, a cutter, other cutting means, etc. are mentioned, for example.

The carrier film is turned inward, and the sheet piece of the two-color polarizing film is peeled off from the carrier film, and the sheet piece is fed to the adhesive position. And the sheet piece of the 2 color polarizing film peeled from the carrier film is laminated | stacked on the liquid crystal panel side through an adhesive, conveying a liquid crystal panel (adhesive substep, S4). As an adhesion means, the adhesion roller pair is mentioned, for example. Moreover, there exists a winding substep by which the carrier film in which the sheet piece was peeled off, and the conveyance substep which conveys a liquid crystal panel to an adhesion position. In addition, a conveyance substep conveys the liquid crystal panel with which the 2 color polarizing film was stuck to the adhesion position with the next reflective polarizing film. As a conveying means of a liquid crystal panel, it consists of a control roller for controlling a pair of adhesive rollers, a roller for conveyance, an adsorption plate, those conveyance speeds, an amount of conveyance, etc., for example.

Next, the sheet piece lamination step of the reflective polarizing film laminated | stacked on a 2 color polarizing film is demonstrated. The continuous roll of a reflective polarizing film is prepared (S11). The film width W2 of the reflective polarizing film is smaller than the width W1 of the two-color polarizing film which is already laminated (refer FIG. 4A, FIG. 4B, W2 <W1). A reflective polarizing film and a carrier film are unwound from a continuous roll and conveyed to a downstream side (carrier film conveyance substep, S12).

The reflective polarizing film is cut at a predetermined cutting interval L2 in the film width direction perpendicular to the longitudinal direction of the reflective polarizing film leaving the carrier film to form a sheet piece of the reflective polarizing film (cutting substep, S13). Here, the cutting interval L2 of the reflective polarizing film is smaller than the cutting interval L1 of the two-color polarizing film (see FIGS. 4A and 4B, L2 <L1).

The carrier film is turned inward, and the sheet piece of the reflective polarizing film is peeled from the carrier film, and the sheet piece is peeled off at the distal end of the carrier. And the sheet piece of the reflective polarizing film peeled from the carrier film is stuck to a two-color polarizing film through an adhesive, conveying a liquid crystal panel (adhesive substep, S14). The adhesion means is the same as the said adhesion means. A conveyance substep conveys the liquid crystal panel with which the reflective polarizing film was stuck by the next process.

As another embodiment of the said embodiment, when laminating | stacking the reflective polarizing film which has a transmission axis in the longitudinal direction orthogonal to a film width direction, the conveyance line of a liquid crystal panel is L-shaped in the 2-color polarizing film which has a transmission axis in a film width direction After constructing and laminating the sheet piece of a 2 color polarizing film to a liquid crystal panel, the said liquid crystal panel is conveyed along an L-shaped conveyance line, and the sheet piece of a reflective polarizing film is a sheet piece of the said 2 color polarizing film. The layers are laminated so that their transmission axis directions are the same.

Moreover, as another embodiment of the said embodiment, a sheet piece lamination | stacking step further contains the film | membrane inspection substep which inspects an optical film, and a cutting | substrate substep cut | disconnects the said optical film according to the inspection result of a film inspection substep. do. In addition, the cutting substep cuts the optical film determined as defective in the inspection result of the film inspection substep to a predetermined size (cutting to avoid defects (so-called 'skip cut')), and the sheet of the defective optical film determined as defective. It further has an exclusion substep of excluding a piece. In addition, the film inspection substep may read out defect information previously provided to an optical film or a carrier film, and may cut | disconnect so that a fault may be avoided based on the defect information. As a fault inspection method, there exists a method of image | photographing the image by transmitted light or reflected light with respect to an optical film, image-processing the said image, and analyzing a fault, and determining whether it is a good or defective product. In addition, the algorithm of an image processing can apply a well-known method, for example, can detect a fault by the light and shade determination by a binarization process. The defect information obtained by the defect test | inspection is attached with the said positional information (for example, position coordinate), is transmitted to a control apparatus (not shown), and contributes to the cutting process of a cutting substep.

Moreover, as another embodiment, in a film inspection substep, it is preferable to test an optical film in the state which peeled the carrier film from the optical film, and after a test | inspection, bonding a carrier film to an optical film via an adhesive. .

In addition, although the said embodiment demonstrated the method of laminating | stacking a two-color polarizing film and a reflective polarizing film in this order on one side of a liquid crystal panel, this embodiment is not limited to this structure. On the other side of a liquid crystal panel, a 2 color polarizing film can be laminated similarly. In this case, the transmission axis of the two-color polarizing film laminated on one side of the liquid crystal panel and the transmission axis of the two-color polarizing film laminated on the other side are laminated so as to have a cross nicol relationship.

(Manufacturing System of Liquid Crystal Display Element)

The manufacturing system of the liquid crystal display element of Embodiment 1 is demonstrated referring FIG. The manufacturing system of a liquid crystal display element is an optical film leaving the carrier film conveyance means which conveys the said carrier film from the continuous roll which winds up the carrier film in which the optical film of the predetermined film width containing an adhesive was laminated | stacked, and the said carrier film. The carrier while cutting the optical film at a predetermined cutting interval in a film width direction orthogonal to the longitudinal direction of the cross section, a conveying means for conveying a liquid crystal panel, and the carrier while conveying the liquid crystal panel. Two or more sheet piece laminating apparatus of the optical film provided with the adhesive means which laminates the said sheet piece peeled from the film to the said liquid crystal panel side via the said adhesive. By this two or more sheet piece laminating apparatus, two or more sheet pieces are laminated | stacked on the liquid crystal panel side in order for every sheet piece, and a liquid crystal display element is formed. And a manufacturing system has a control part which controls the said cutting means and a carrier film conveying means so that the said cutting interval of the sheet piece laminated | stacked initially is the largest, and the cutting interval of the sheet piece laminated | stacked afterwards may become small sequentially, The cutting means of a sheet piece laminating apparatus cut | disconnects an optical film so that the said cutting interval of the sheet piece laminated | stacked initially is the largest, and the cutting interval of the sheet piece laminated | stacked after that becomes small sequentially. That is, the magnitude relation of the sheet strip being laminated in order on the liquid crystal panel of the cutting interval (one piece, two piece, n th, n + 1 th, ‥) L is a L _n> L _{n +1.}

Below, the two sheet pieces laminated | stacked on one side of a liquid crystal panel are two-color polarizing films and a reflective polarizing film, but are not limited to this, Another optical film may be sufficient, and the 3rd (after) optical film You may laminate by the same sheet piece laminating apparatus.

Two sheet piece laminating apparatus is a sheet piece laminating apparatus for laminating the sheet piece laminating apparatus 301 for laminating the sheet piece of a two-color polarizing film, and the sheet piece of a reflective polarizing film to the sheet piece of a two-color polarizing film. 302. In this embodiment, the sheet piece laminating apparatus 301 of a two-color polarizing film and the sheet piece laminating apparatus 302 of a reflective polarizing film are arrange | positioned at a continuous manufacturing line. The film width W1 of the two-color polarizing film is larger than the film width W2 of the reflective polarizing film (see FIGS. 4A to 4B). In this embodiment, the two-color polarizing film has a transmission axis in the longitudinal direction, and has an absorption axis in the film width direction. Moreover, the reflective polarizing film has a transmission axis in the longitudinal direction, and has a reflection axis in the film width direction. And it is a relationship of the film width W2 of the film width W1> reflective polarizing film of a two-color polarizing film.

The sheet piece laminating apparatus 301 of the two-color polarizing film shown in FIG. 3 is carrier film conveyance means 101, liquid crystal panel conveyance means 102, adhesion means 103 (adhesive roll 50a, drive) Roll 50b). In addition, the sheet piece laminating apparatus 302 of a reflective polarizing film has a liquid crystal panel conveying means 202, the carrier film conveying means 201, and the adhesion means 203 (adhesive roll, drive roll). In this embodiment, the sheet piece 131 of the two-color polarizing film is stuck from the upper side of the liquid crystal panel 4, and the sheet piece 231 of the reflective polarizing film is subsequently stuck from the upper side of the liquid crystal panel 4. have. Moreover, it is not limited to this adhesion method, For example, the sheet piece of a 2 color polarizing film may be stuck from the lower side of a liquid crystal panel, and the sheet piece of a reflective polarizing film may be stuck from the lower side of a liquid crystal panel, and one optical film may be a liquid crystal. You may adhere from the panel upper side, and you may adhere the other optical film from the lower side of a liquid crystal panel.

(Liquid crystal panel conveyance means)

The liquid crystal panel conveyance means 102 supplies the liquid crystal panel 4 to the adhesion means 103, and conveys it. In this embodiment, the liquid crystal panel conveyance means 102 is comprised with the conveyance roller 80, an adsorption plate, etc. By rotating the conveyance roller 80 or conveying an adsorption plate, the liquid crystal panel 4 is conveyed to a manufacturing line downstream side.

(Carrier film conveying means)

The carrier film conveying means 101 unwinds the carrier film 12 in which the two-color polarizing film 13 containing an adhesive was laminated | stacked from the continuous roll 1, leaving the carrier film 12, and left the two-color polarizing film 13 ) Is cut at a predetermined cutting interval L1 to form the sheet piece 131 of the two-color polarizing film on the carrier film 12, and the carrier film 12 is folded inward at the distal end of the peeling means 40 to form a carrier. The sheet piece 131 (including an adhesive) of the two-color polarizing film is peeled from the film 12, and it supplies to the adhesion means 103. Therefore, the carrier film conveying means 101 has the cutting means 20, the dancer roll 30, the peeling means 40, and the winding means 60. As shown in FIG.

The cutting means 20 fixes the carrier film 12 by the adsorption means 20a, cuts the two-color polarizing film 13 at predetermined intervals L1 leaving the carrier film, and polarizes the two colors on the carrier film 12. The sheet piece 131 of the film is formed. As the cutting means 20, a cutter, a laser device, etc. are mentioned, for example.

The dancer roll 30 has a function of holding the tension of the carrier film 12. The carrier film conveying means 101 conveys the carrier film 12 via the dancer roll 30.

When the peeling means 40 adheres the sheet piece 131 to the liquid crystal panel 4, the peeling means 40 folds the carrier film 12 inward at the distal end thereof and peels the sheet piece 131 from the carrier film 12. do. In the present embodiment, as the peeling means 40, a sharp knife edge portion is used at the tip portion, but the present invention is not limited thereto.

The winding means 60 winds up the carrier film 12 from which the sheet piece 131 was peeled off. In addition, a feed roller may be further provided between the adhesion means 103 and the winding means 60.

(Adhesive means)

The adhesion means 103 interposes the sheet piece 131 of the two-color polarizing film supplied by the carrier film conveyance means 101 from the upper side of the liquid crystal panel 4 supplied by the liquid crystal panel conveyance means 102 via an adhesive. To adhere. In this embodiment, the adhesion means 103 is comprised from the adhesion roller 50a and the drive roller 50b.

(Control section)

The control part 300 controls the cutting means 20 and the carrier film conveying means 101, and controls the cutting space L1 of the sheet piece 131 of a 2-color polarizing film. Cutting interval L1 becomes the length of the direction orthogonal to the film width direction of the sheet piece 131 of a 2 color polarizing film (refer FIG. 4A-FIG. 4C). The control unit 300 controls the cutting means 20 and the carrier film conveying means 101 so that the cutting interval L1 of the two-color polarizing film is the largest, and then the cutting interval L2 of the reflective polarizing film to be laminated becomes smaller than L1. For example, the predetermined intervals L1 and L2 of cutting are previously stored in the memory of the control unit 300, and the control unit 300 controls the transfer amount and cutting processing of the carrier film so as to cut at the predetermined intervals L1 and L2. . You may measure a conveyance amount by detection of the encoder which measures the rotation amount of feed rollers etc. which comprise a part of carrier film conveyance means 101 and 201, for example.

Next, the sheet piece laminating apparatus 302 of a reflective polarizing film is demonstrated. The sheet piece laminating device 302 of the reflective polarizing film is a device that adheres the sheet piece 231 of the reflective polarizing film to the sheet piece 131 of the two-color polarizing film laminated on the liquid crystal panel 4, but the two-color polarized light Since it is the same structure as the sheet piece laminating apparatus of a film, it demonstrates briefly.

The liquid crystal panel conveying means 202 conveys the liquid crystal panel 4 to which the sheet piece 131 was stuck by the adhesive means 103, and supplies it to the adhesive means 203.

The carrier film conveyance means 201 can be comprised with the apparatus similar to the carrier film conveyance means 101, and the adhesion means 203 can be comprised with the apparatus similar to the adhesion means 103. As shown in FIG. For example, the dancer roll can be comprised by the apparatus similar to the dancer roll 30, the winding means can be comprised by the apparatus similar to the winding means 60, and the adhesion roller and the drive roller are the adhesion roller 50a. ) And the driving roller 50b.

The cutting means 20 fixes the carrier film 22 by the adsorption means 20a, leaves the carrier film 22, and cuts the reflective polarizing film 23 at predetermined intervals L2 (L1 > L2). The sheet piece 231 of the reflective polarizing film is formed on (22).

The adhesion means 203 is an adhesive through the sheet piece 231 of the reflective polarizing film supplied by the carrier film conveyance means 201 from the upper side of the liquid crystal panel 4 supplied by the liquid crystal panel conveyance means 202 via an adhesive. It adheres to the sheet piece 131 of a two-color polarizing film. The adhesion means 203 is a cross-section line (dashed line P1 in FIG. 4A) of the width direction central axis line of the sheet piece 131 of the two-color polarizing film and the direction perpendicular to the width direction, and the reflection polarizing film. The sheet piece 231 of the reflective polarizing film so as to coincide or substantially coincide with the cross line (dashed line P2 in FIG. 4B) of the width direction central axis line of the sheet piece 231 and the center axis line in the direction orthogonal to the width direction. It is preferable to laminate | stack on the sheet piece 131 of a 2-color polarizing film. It is because it is preferable to laminate | stack sheet pieces in consideration of the adhesion | attachment shift | offset | difference amount (shift | deviation in a X direction, shift | deviation in a Y direction, and (theta) shift | offset).

The control part 300 controls the cutting means 20 and the carrier film conveying means 201, and controls the cutting space L2 of the sheet piece 231 of a reflective polarizing film. Cutting interval L2 becomes the length of the direction orthogonal to the film width direction of the sheet piece 231 of a reflective polarizing film (refer FIG. 4A-4C). The control part 300 controls the cutting means 20 and the carrier film conveying means 201 so that L2 of a reflective polarizing film may become smaller than L1 of a two-color polarizing film.

The liquid crystal panel conveying means 204 conveys the liquid crystal panel in which the sheet piece 131 of a 2 color polarizing film and the sheet piece 231 of a reflective polarizing film were laminated | stacked downstream.

Moreover, you may stick optical films, such as a sheet piece of a two-color polarizing film, to another surface of the liquid crystal panel in which the sheet piece is not laminated on the conveyance downstream side using another sheet piece laminating apparatus.

In addition, the inspection apparatus for inspecting the liquid crystal display element in which the two-color polarizing film etc. were laminated | stacked on both surfaces may be provided in the conveyance downstream. The inspection purpose and inspection method of this inspection device are not particularly limited.

[Embodiment 2]

In the manufacturing method of Embodiment 2, after laminating the sheet piece of a two-color polarizing film on both surfaces of a liquid crystal panel by the sheet piece lamination step of two two-color polarizing films, the inspection step which optically inspects the said liquid crystal panel is carried out. Run And after the inspection by the inspection step, the sheet piece lamination step of a reflective polarizing film is performed, and the transmission axis direction of the sheet piece of the said two-color polarizing film is carried out to the sheet piece of the two-color polarizing film laminated | stacked on one side of the liquid crystal panel. The sheet piece of the reflective polarizing film which has the transmission axis of the same direction is laminated | stacked. In this embodiment, although the sheet piece lamination step of the said two-color polarizing film, the said inspection step, and the sheet piece lamination step of the said reflection polarizing film are performed continuously, it is not specifically limited to this, As another embodiment, it is 2 The sheet piece laminating step of two two-color polarizing films may be performed continuously, the sheet piece laminating step and two inspection steps of two two-color polarizing films may be performed continuously, and the sheet piece laminating step of an inspection step and a reflective polarizing film is performed. You may carry out continuously.

The manufacturing flowchart of Embodiment 2 is shown in FIG. First, the sheet piece of a 2 color polarizing film is stuck to one surface of a liquid crystal panel (sheet piece lamination step of S2 color polarizing film, S21). Subsequently, the sheet piece of a two-color polarizing film is stuck to the other surface of a liquid crystal panel (sheet piece lamination step, S22 of a two-color polarizing film). The sheet piece lamination step of a two-color polarizing film is the same as each process of step S1-step S4 of the said Embodiment 1. In addition, the transmission axis of the two-color polarizing film laminated on one side of the liquid crystal panel and the transmission axis of the two-color polarizing film laminated on the other side are laminated so as to have a cross nicol relationship.

Subsequently, light is irradiated to the two-color polarizing film surface used as the back side (backlight side) with respect to the liquid crystal panel by which the sheet piece of the two-color polarizing film was stuck on both surfaces, and the reflected light image is imaged. Moreover, light is irradiated to the 2 color polarizing film surface used as a backlight side (back side), and the image of the transmitted light is imaged. The image data obtained by imaging is image-processed, and the presence or absence of defects, such as a foreign material or air bubbles interposed between a 2-color polarizing film or between a 2-color polarizing film and a liquid crystal panel, is determined (inspection step, S23). When it determines with good quality (regular goods), a liquid crystal display panel is conveyed to the adhesion position with a reflective polarizing film. And the sheet piece of a reflective polarizing film is stuck to the two-color polarizing film used as the back side of a liquid crystal panel (sheet piece lamination step of S-reflective polarizing film, S25). The sheet piece laminating step of a reflective polarizing film is the same as each process of step S11-step S14 of the said Embodiment 1. Moreover, it is laminated so that the transmission axis of a two-color polarizing film and the transmission axis of a reflective polarizing film laminated | stacked on this two-color polarizing film become the same direction. On the other hand, when it determines with a defective article, a liquid crystal panel is conveyed to a defective article pot and removed (exclusion step, S26).

(Manufacturing system)

The manufacturing system of Embodiment 2 is demonstrated referring FIG. In this embodiment, although the sheet piece laminating apparatus of two two-color polarizing films, the inspection apparatus, and the sheet piece laminating apparatus of a reflective polarizing film are arrange | positioned in a continuous manufacturing line, it does not specifically limit to this, Two two-color polarizing films Sheet piece laminating apparatus may be arranged in a continuous manufacturing line, the sheet piece laminating apparatus and the inspection apparatus of two two-color polarizing films may be arrange | positioned in a continuous manufacturing line, and the sheet piece laminating apparatus of an inspection apparatus and a reflective polarizing film is continuous You may arrange in a manufacturing line.

The sheet piece laminating apparatus 501,502 shown in FIG. 5 is the same structure as the sheet piece laminating apparatus of the 2 color polarizing film of Embodiment 1. FIG. The sheet piece laminating apparatus 501 laminates the sheet piece 131 of a two-color polarizing film on the visual recognition side of a liquid crystal panel, and the sheet piece laminating apparatus 502 is a two-color polarizing film on the back side (backlight side) of a liquid crystal panel. Sheet pieces 131 are laminated. As for the sheet piece laminating apparatus 501, 502, when the transmission axis of the sheet pieces of the two-color polarizing film laminated | stacked on both surfaces of a liquid crystal panel is made into cross nicol, even if it laminate | stacks a sheet piece from the liquid crystal panel upper side like Example 1, You may laminate | stack a sheet piece from the lower side of a liquid crystal panel. You may have a 90 degree horizontal rotation mechanism, an up-down inversion mechanism, etc. as needed.

The liquid crystal panel in which the sheet piece of the two-color polarizing film was laminated | stacked on both surfaces is conveyed to the test | inspection apparatus 400 by the liquid crystal panel conveyance means 202. The inspection apparatus 400 optically inspects the liquid crystal panel. The inspection apparatus 400 irradiates light perpendicularly to the surface (from top to bottom in FIG. 5) to be the back side of the liquid crystal panel which has been conveyed. Light from the irradiation unit 401 is reflected by a half mirror (not shown) to irradiate the liquid crystal panel. The reflected light image by this irradiation is imaged by the imaging means 402. The transmitted light image is captured by the imaging means 403. The image data obtained by imaging is image-processed by the information processing part of the test | inspection apparatus 400, and analyzes a fault and determines whether it is a good or defective product by the determination part.

Subsequently, the sheet piece laminating apparatus 503 of the reflective polarizing film which is the structure similar to Embodiment 1 is the sheet piece of the 2 color polarizing film laminated | stacked on the surface used as the back side of a liquid crystal panel after the test | inspection by the test | inspection apparatus 400. The sheet piece 231 of the reflective polarizing film is attached to 131 so that the transmission axis direction of the sheet piece 131 of the two-color polarizing film and the transmission axis direction of the sheet piece 232 of the reflective polarizing film are the same. Stick. The sheet piece laminating apparatus 503 adheres the sheet piece 231 of the reflective polarizing film to the sheet piece 131 of the two-color polarizing film with respect to the liquid crystal panel judged good quality by the test result. The liquid crystal panel determined as defective in the inspection result is removed and returned to the defective port. In addition, you may convey the defective liquid crystal panel by the liquid crystal panel conveyance means 202, the adhesion means 203, and the conveyance means 204 to the defective article port.

The operation timing of each said means and apparatus is computed by the method which arrange | positions and detects a sensor in a predetermined position, for example, or calculates it by detecting the rotating member of a conveying means or a conveyance mechanism with a rotary encoder. The control unit may be realized by a cooperative action between a software program and hardware resources such as a CPU and a memory. In this case, the memory is stored in advance in the program software, processing procedures, and various settings. Moreover, it can be comprised by dedicated circuits, firmware, etc.

[Embodiment 3]

The manufacturing method and manufacturing system of Embodiment 3 are based on the structure of the said Embodiment 1, Moreover, after the adhesion substep (adhesive means 103) of the 1st sheet piece, a 2nd sheet piece is adhere | attached Before this, it has the horizontal rotation process (horizontal rotation part 90) which makes the liquid crystal panel 4 rotate 90 degrees horizontally with respect to the conveyance direction D (refer FIG. 6, FIG. 7). Each component of Embodiment 3 has the components similar to Embodiment 1, and each component of FIG. 6, FIG. 7A-FIG. 7C has the each of FIG. 3, FIG. Since it is the same as a component, description of each component is abbreviate | omitted and a different structure is demonstrated below.

As shown to FIG. 6, FIG. 7A-FIG. 7C, the 1st sheet piece 131 is laminated | stacked on the liquid crystal panel 4. As shown in FIG. And before laminating the 2nd sheet piece 231 to the 1st sheet piece 131, the liquid crystal panel 4 is rotated 90 degrees horizontally with respect to the conveyance direction D. FIG. Subsequently, the second sheet piece 231 is laminated on the first sheet piece 131. When this adhesion is performed, the first side (the film width of the optical film wound around the continuous roll) of the first sheet piece 131 and the second side (the predetermined cut by the cutting means) of the second sheet piece 231 The side cut | disconnected by the space | interval corresponds to up-down (thickness direction of lamination), and the 2nd side (side cut | disconnected by predetermined | prescribed cutting interval by the cutting means) of the 1st sheet piece 131, and the 2nd sheet piece The 1st side (film width of the optical film wound by the continuous roll) of 231 respond | corresponds up and down (thickness direction of lamination).

The horizontal rotating part 90 moves the liquid crystal panel 4 upward, for example, separates it from the liquid crystal panel conveying means (for example, the conveyance roller 80), and continues horizontally rotating 90 degrees, and continues Although the mechanism to mount on the conveyance roller 80 is illustrated, it is not limited to this, Another mechanism may be sufficient.

After the 2nd sheet piece 231 is laminated | stacked, the 3rd sheet piece may be laminated | stacked. In this case, before laminating the third sheet piece, the liquid crystal panel may be rotated 90 ° horizontally again.

[Example]

Using the sheet piece laminating apparatus of the first embodiment, the sheet piece (first sheet) of the retardation film, the sheet piece (second sheet) of the two-color polarizing film, and the reflective polarizing film on one surface of the liquid crystal panel (32 inches) It laminated | stacked in the order of the sheet piece (3rd sheet). In each of Examples 1 and 2 and Comparative Example 1, the number of evaluation samples was set to 100 sheets (n = 100). Film width W1, W2, W3 of each of the 1st retardation film laminated | stacked directly on the liquid crystal panel in Example 1 and 2, the comparative example 1, the 2nd color polarizing film, and the 3rd reflective polarizing film, cutting | disconnection The magnitude relationship between the intervals L1, L2, and L3 is shown in Table 1, and their actual dimensions are shown in Table 2. In addition, in Table 2, the maximum value (width direction (Y direction which is the film width direction), longitudinal direction (X direction which is the conveyance direction of a liquid crystal panel) of the adhesion shift | offset | difference amount, and the defect generation rate (%) by visual inspection were shown. . As for the amount of shift, length (adhesive exposure amount) that the third sheet piece protrudes from the second sheet piece, and the adhesive (paste) of the third sheet piece is exposed, or the second sheet piece is empty from the first sheet piece It was the maximum amount of the length which the adhesive (paste) of the 2nd sheet piece pulled out and exposed, and measured by the digital caliper. The evaluation item of the defect determination was made into adhesive shortage, contamination, and a foreign material.

From the result of Example 1, when the magnitude | size relationship of the film width and cutting spacing of a sheet piece is W1> W2> W3, L1> L2> L3, the 3rd sheet piece is not protruded from the 2nd sheet piece, It was confirmed that the second sheet piece was adhered without protruding from the first sheet piece. On the other hand, from the result of the comparative example 1, when the film width (W1 = W2 = W3) and the cutting | disconnection spacing (L1 = L2 = L3) of the 1st, 2nd, and 3rd sheet piece are the same, the 2nd sheet piece is 1 It could not stick without protruding from a sheet piece of the sheet | seat, and the 3rd sheet piece did not protrude from the sheet piece of 2nd sheet, and it was a result which could not stick. In addition, in the comparative example 2, although the 3rd sheet piece does not protrude from the 1st sheet piece, it is protruded than the 2nd sheet piece. Therefore, in Example 1 in which the adhesive was not exposed, the defective occurrence rate was 0%, whereas in Comparative Examples 1 and 2 in which the adhesive was exposed, defects such as insufficient adhesive, contamination, and foreign matter were observed.

In addition, from the results of Example 1, it is preferable to set the film widths and cutting intervals of the first, second and third sheets in consideration of the maximum shift amount in the film width direction and the direction orthogonal to the film width direction. (W1 ≥ (W2 + maximum deviation in width direction) ≥ (W3 + maximum deviation in width direction), L1 ≥ (L2 + maximum deviation in length direction ≥ (L3 + maximum deviation in length direction)). The amount can be set from the result of the long run operation of a manufacturing system.

1, 2: continuous roll
4: liquid crystal panel
20: cutting means
40: peeling means
90: horizontal rotating part
101, 201: carrier film conveying means
102 and 202: liquid crystal panel conveying means
103, 203: adhesive means
131: Sheet piece of a two-color polarizing film
231: sheet piece of reflective polarizing film
300:

Claims (20)

Carrier film conveyance substep which conveys the said carrier film, and the film orthogonal to the longitudinal direction of an optical film leaving the said carrier film from the continuous roll which winds up the carrier film in which the optical film of the predetermined film width containing an adhesive was laminated | stacked The cutting substep which cut | disconnects the said optical film at predetermined | prescribed cutting interval in the width direction, and forms the sheet piece of an optical film, the conveyance substep which conveys a liquid crystal panel, and the said peeling from the said carrier film, conveying the said liquid crystal panel Two or more sheet pieces laminating steps of the optical film containing the adhesive substep which laminates a sheet piece to the said liquid crystal panel side via the said adhesive agent, Two or more sheet pieces are comprised by the said two or more sheet piece laminating steps, Liquid crystal display element which forms a liquid crystal display element by laminating | stacking on the liquid crystal panel side in order for every sheet piece. As a method of manufacturing a ruler,
In the two or more sheet pieces laminated on one side of the liquid crystal panel, each of the four sides of the subsequently stacked sheet pieces is smaller than the corresponding side in the laminated state among the four sides of the sheet pieces stacked immediately before. The film width of the optical film wound by the continuous roll is set, and the said cutting space | interval in the said cutting substep is set, The manufacturing method of the liquid crystal display element. The method of claim 1,
In the said sheet piece, when the side corresponded to the film width of the optical film wound by the said continuous roll is called a 1st side, and the side which is orthogonal to the said 1st side, and corresponds to the length of the said cutting interval is called a 2nd side. And the first side of the next sheet piece to be laminated corresponds to the first side of the immediately preceding sheet piece laminated first, and the second side of the next sheet piece corresponds to the second side of the immediately preceding sheet piece, The next sheet piece is laminated on the immediately preceding sheet piece,
In two or more sheet pieces laminated | stacked on one side of the said liquid crystal panel, it winds around the said 2 or more continuous rolls so that the film width of the sheet piece laminated | stacked first may become largest, and the film width which is the sheet piece laminated | stacked afterwards may become small sequentially. The film width of the optical film which there is is set,
The liquid crystal in which the optical film is cut in the cutting substep so that the sheet piece is formed so that the cutting interval of the sheet piece to be laminated firstly formed in the cutting substep is the largest, and the cutting interval of the sheet piece to be laminated later is sequentially smaller. The manufacturing method of a display element. 3. The method according to claim 1 or 2,
Further comprising a horizontal rotation step of rotating the liquid crystal panel in which the sheet pieces are laminated by the adhesive substep, by 90 ° horizontally with respect to the conveyance direction of the liquid crystal panel, before laminating the next sheet piece by the next adhesive substep,
In the said sheet piece, the side corresponded to the film width of the optical film wound by the said continuous roll was called the 1st side, and the side orthogonal to the said 1st side, and corresponded to the length of the said cutting | disconnection gap was called the said 2nd side. In this case, the second side of the next sheet piece corresponds to the first side of the previous sheet piece stacked before the horizontal rotation step, and the first side of the next sheet piece corresponds to the second side of the previous sheet piece. The next sheet piece is laminated on the immediately preceding sheet piece,
The film width of the optical film wound around the continuous roll for forming the next sheet piece is set so that the first side of the next sheet piece becomes smaller than the second side of the immediately preceding sheet piece,
The cutting interval is set so that the second side of the next sheet piece is smaller than the first side of the immediately preceding sheet piece, and the optical film is cut at the cutting substep based on the cutting gap to form the next sheet piece. The manufacturing method of a liquid crystal display element. 4. The method according to any one of claims 1 to 3,
The manufacturing method of the liquid crystal display element in which the said 2 or more sheet piece laminating step is performed continuously. 5. The method according to any one of claims 1 to 4,
One of the optical films is a two-color polarizing film, the other of the optical films is a reflective polarizing film,
The sheet piece laminating step of a 2 color polarizing film laminates the sheet piece of the said 2 color polarizing film to the said liquid crystal panel,
In the sheet piece laminating step of the reflective polarizing film, the sheet piece of the reflective polarizing film is the two-color polarizing film so that the transmission axis of the sheet piece of the two-color polarizing film and the transmission axis of the sheet piece of the reflective polarizing film are in the same direction. The manufacturing method of the liquid crystal display element which laminates the sheet piece of the said reflective polarizing film to the said liquid crystal panel by sticking to the sheet piece of the said. The method of claim 5,
The said two-color polarizing film to which the said reflective polarizing film and the said reflective polarizing film adhere is a manufacturing method of the liquid crystal display element which has a transmission axis in the longitudinal direction orthogonal to a film width direction. The method according to claim 5 or 6,
By laminating | stacking the sheet piece of a 2 color polarizing film on both surfaces of the said liquid crystal panel by the sheet piece lamination step of two said two-color polarizing films, the test step of optically inspecting the said liquid crystal panel is further included,
The sheet piece lamination step of a reflective polarizing film is a transmission axis direction and the reflection polarization of the sheet piece of the said two-color polarizing film to the sheet piece of the two-color polarizing film laminated | stacked on one side of the said liquid crystal panel after the test by the said inspection step. The manufacturing method of the liquid crystal display element which sticks the sheet piece of the said reflective polarizing film so that the transmission axis direction of the sheet piece of a film may become the same. Carrier film conveying means which conveys the said carrier film, and the film width orthogonal to the longitudinal direction of an optical film leaving the said carrier film from the continuous roll which winds up the carrier film in which the optical film of the predetermined film width containing an adhesive was laminated | stacked Cutting means for cutting the optical film at a predetermined cutting interval in the direction to form a sheet piece of the optical film, a conveying means for conveying the liquid crystal panel, and the sheet piece peeled from the carrier film while conveying the liquid crystal panel. Two or more sheet piece laminating apparatuses of the optical film provided with the adhesive means laminated | stacked on the said liquid crystal panel side via the said adhesive are provided, and two or more sheet pieces are ordered for every sheet piece by the said two or more sheet piece laminating apparatus. As a manufacturing system of a liquid crystal display element which is laminated on the liquid crystal panel side as such to form a liquid crystal display element. Standing,
In the two or more sheet pieces laminated on one side of the liquid crystal panel, each of the four sides of the subsequently stacked sheet pieces is smaller than the corresponding side in the laminated state among the four sides of the sheet pieces stacked immediately before. The manufacturing system of the liquid crystal display element in which the film width of the optical film wound by the continuous roll is set, and the said cutting interval in the said cutting means is set. 9. The method of claim 8,
In the said sheet piece, when the side corresponded to the film width of the optical film wound by the said continuous roll is called a 1st side, and the side which is orthogonal to the said 1st side, and corresponds to the length of the said cutting interval is called a 2nd side. And the first side of the next sheet piece to be laminated corresponds to the first side of the immediately preceding sheet piece laminated first, and the second side of the next sheet piece corresponds to the second side of the immediately preceding sheet piece, The next sheet piece is laminated on the immediately preceding sheet piece,
In the two or more sheet pieces laminated | stacked on one side of the said liquid crystal panel, the film width of the sheet piece laminated | stacked first is largest and wound by the said 2 or more continuous rolls so that the film width of the sheet piece laminated | stacked afterwards may become small sequentially. The film width of the optical film is set,
Liquid crystal which the cutting means of the said sheet piece laminating apparatus cut | disconnects the said optical film, and forms a sheet piece so that the said cutting space | interval of the sheet piece laminated | stacked initially is the largest, and the cutting interval of the sheet piece laminated | stacked after this becomes small sequentially. Manufacturing system of display element. 10. The method according to claim 8 or 9,
It further has a horizontal rotation part which rotates 90 degrees horizontally with respect to the conveyance direction of the said liquid crystal panel, before laminating | stacking the next sheet piece by the next adhesion means the liquid crystal panel which the sheet piece was laminated by the said adhesion means,
In the said sheet piece, the side corresponded to the film width of the optical film wound by the said continuous roll was called the 1st side, and the side orthogonal to the said 1st side, and corresponded to the length of the said cutting | disconnection gap was called the said 2nd side. In this case, the second side of the next sheet piece corresponds to the first side of the immediately preceding sheet piece stacked before the rotation by the horizontal rotating part, and the first side of the next sheet piece relates to the second side of the immediately preceding sheet piece. The next sheet piece is laminated on the immediately preceding sheet piece so that a side corresponds.
The film width of the optical film wound around the continuous roll for forming the next sheet piece is set so that the first side of the next sheet piece becomes smaller than the second side of the immediately preceding sheet piece,
The cutting interval is set so that the second side of the next sheet piece is smaller than the first side of the immediately preceding sheet piece, and the cutting means cuts the optical film based on the cutting gap to form the next sheet piece. Manufacturing system of liquid crystal display element. 11. The method according to any one of claims 8 to 10,
The manufacturing system of the liquid crystal display element which arrange | positioned the said 2 or more sheet piece laminating apparatus in a continuous manufacturing line. The method according to any one of claims 8 to 11,
One of the optical films is a two-color polarizing film, the other of the optical films is a reflective polarizing film,
The sheet piece laminating apparatus of a 2 color polarizing film laminates the sheet piece of the said 2 color polarizing film to the said liquid crystal panel,
The sheet piece lamination apparatus of the said reflection polarizing film has the sheet piece of the said two-color polarizing film so that the transmission axis of the sheet piece of the said two-color polarizing film and the transmission axis of the sheet piece of the said reflection polarizing film may be the same direction. The manufacturing system of the liquid crystal display element which laminates the sheet piece of the said reflective polarizing film to the said liquid crystal panel by sticking to a sheet piece. The method of claim 12,
The reflective polarizing film and the two-color polarizing film to which the reflective polarizing film is attached have a transmission axis in a longitudinal direction perpendicular to the film width direction. The method according to claim 12 or 13,
As a sheet piece laminating apparatus of two said two-color polarizing films, After laminating | stacking the sheet piece of a two-color polarizing film on both surfaces of the said liquid crystal panel, it further has a test | inspection apparatus which optically inspects the said liquid crystal panel,
The sheet piece laminating apparatus of the said reflective polarizing film is a transmission axis direction and reflection of the sheet piece of the said two-color polarizing film to the sheet piece of the two-color polarizing film laminated | stacked on one side of the said liquid crystal panel after the test | inspection by the said inspection apparatus. The manufacturing system of the liquid crystal display element which sticks the sheet piece of the said reflective polarizing film so that the transmission axis direction of the sheet piece of a polarizing film may become the same. Carrier film conveyance substep which conveys the said carrier film, and conveyance substep which conveys the said carrier film from the continuous roll which the sheet piece of the optical film of the predetermined film width containing an adhesive winds adjacently stacked in multiple numbers, and a liquid crystal panel. And two or more sheet piece laminating steps of an optical film including an adhesive substep of laminating the sheet piece peeled from the carrier film to the liquid crystal panel side via the pressure sensitive adhesive while conveying the liquid crystal panel, and As a manufacturing method of the liquid crystal display element which forms a liquid crystal display element by laminating | stacking two or more sheet pieces in order for every sheet piece in order by two or more sheet piece lamination steps,
In the two or more sheet pieces laminated on one side of the liquid crystal panel, each of the four sides of the subsequently stacked sheet pieces is smaller than the corresponding side in the laminated state among the four sides of the sheet pieces stacked immediately before. The manufacturing method of the liquid crystal display element by which the film width of the sheet piece of the optical film wound by a continuous roll, and the length of the direction orthogonal to this film width are set. 16. The method of claim 15,
In the said sheet piece, when the side corresponded to the film width of the sheet piece of the optical film wound by the said continuous roll is called a 1st side, and the side corresponded to the length of the direction orthogonal to the said film width, the 2nd side, The first side of the next sheet piece to be stacked next corresponds to the first side of the previous sheet piece to be stacked first, and the second side of the next sheet piece corresponds to the second side of the immediately preceding sheet piece, so as to correspond to the first side. The next sheet piece is laminated on the sheet piece,
In the two or more sheet pieces laminated | stacked on one side of the said liquid crystal panel, the film width of the sheet piece laminated | stacked initially and the length of the direction orthogonal to the film width are largest, and the film width and the film width of the sheet piece laminated | stacked after that The manufacturing method of the liquid crystal display element in which the film width of the sheet piece of the optical film wound on the said 2 or more continuous rolls, and the length of the direction orthogonal to this film width are set so that the length of the direction orthogonal to it may become small sequentially. 17. The method according to claim 15 or 16,
Further comprising a horizontal rotation step of rotating the liquid crystal panel in which the sheet pieces are laminated by the adhesive substep, by 90 ° horizontally with respect to the conveyance direction of the liquid crystal panel, before laminating the next sheet piece by the next adhesive substep,
In the said sheet piece, when the side corresponded to the film width of the optical film wound by the said continuous roll to a 1st side, and the side corresponded to the length of the direction orthogonal to the said film width, said said 2nd side, Immediately before the second side of the next sheet piece corresponds to the first side of the previous sheet piece stacked before the horizontal rotation step, and the first side of the next sheet piece corresponds to the second side of the immediately preceding sheet piece. The next sheet piece is laminated on the sheet piece,
The film width of the sheet piece of the optical film wound on the said continuous roll is set so that the said 1st side of the said next sheet piece may become smaller than the said 2nd side of the immediately preceding sheet piece,
The manufacturing method of the liquid crystal display element in which the length of the direction orthogonal to the film width of the sheet piece of the optical film wound by the said continuous roll is set so that the said 2nd side of the said next sheet piece may become smaller than the said 1st side of the said immediately preceding sheet piece. Carrier film conveyance means which conveys the said carrier film from the continuous roll which the sheet piece of the optical film of the predetermined film width containing an adhesive winds adjacently stacked in multiple numbers, and conveyance means which conveys a liquid crystal panel, At least two sheet piece laminating apparatus of the optical film provided with the adhesive means which laminates the said sheet piece peeled from the said carrier film on the said liquid crystal panel side via the said adhesive agent, conveying the said liquid crystal panel, The said two or more sheet As a manufacturing system of the liquid crystal display element which forms a liquid crystal display element by laminating | stacking two or more sheet pieces in order for every sheet piece in order by a piece lamination apparatus,
In the two or more sheet pieces laminated on one side of the liquid crystal panel, each of the four sides of the subsequently stacked sheet pieces is smaller than the corresponding side in the laminated state among the four sides of the sheet pieces stacked immediately before. The manufacturing system of the liquid crystal display element in which the film width of the sheet piece of the optical film wound by a continuous roll, and the length of the direction orthogonal to this film width are set. 19. The method of claim 18,
In the said sheet piece, when the side corresponded to the film width of the sheet piece of the optical film wound by the said continuous roll is called a 1st side, and the side corresponded to the length of the direction orthogonal to the said film width, the 2nd side, The first side of the next sheet piece to be stacked next corresponds to the first side of the previous sheet piece to be stacked first, and the second side of the next sheet piece corresponds to the second side of the immediately preceding sheet piece, so as to correspond to the first side. The next sheet piece is laminated on the sheet piece,
In the two or more sheet pieces laminated | stacked on one side of the said liquid crystal panel, the film width of the sheet piece laminated | stacked initially and the length of the direction orthogonal to the film width are largest, and the film width and the film width of the sheet piece laminated | stacked after that The manufacturing system of the liquid crystal display element in which the film width of the sheet piece of the optical film wound by the said 2 or more continuous rolls, and the length of the direction orthogonal to this film width are set so that the length of the direction orthogonal to it may become small sequentially. 20. The method according to claim 18 or 19,
Further comprising a horizontal rotating part for horizontally rotating the liquid crystal panel in which the sheet pieces are laminated by the adhesion means, 90 degrees horizontally with respect to the conveyance direction of the liquid crystal panel before laminating the next sheet piece by the next adhesion means,
In the said sheet piece, when the side corresponded to the film width of the optical film wound by the said continuous roll to a 1st side, and the side corresponded to the length of the direction orthogonal to the said film width, said said 2nd side, The second side of the next sheet piece corresponds to the first side of the previous sheet piece stacked before the rotation by the horizontal rotating part, and the first side of the next sheet piece corresponds to the second side of the previous sheet piece, The next sheet piece is laminated on the immediately preceding sheet piece,
The film width of the sheet piece of the optical film wound on the said continuous roll is set so that the said 1st side of the said next sheet piece may become smaller than the said 2nd side of the immediately preceding sheet piece,
The manufacturing system of the liquid crystal display element in which the length of the direction orthogonal to the film width of the sheet piece of the optical film wound by the said continuous roll is set so that the said 2nd side of the said next sheet piece may become smaller than the said 1st side of the said immediately preceding sheet piece.

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