JP2007125854A - Sheet member with reinforcing member and method for producing display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet member with a reinforcing member which hardly causes a defect and is easy in handling. <P>SOLUTION: The sheet member with a reinforcing member is provided in which a laminated sheet 11 is reinforced by a reinforcing plate 30 to thereby suppress a deformation or bending of the laminated sheet 11, so that a defect such as a folded mark can be prevented from occurring on the laminated sheet 11 and handling of the laminated sheet 11 becomes easy, wherein the reinforcing plate 30 and the laminated sheet 11 are superimposed to each other with length directions aligned to thereby reinforce the laminated sheet 11 in a longitudinal direction in which it is easily deformed, so that deformation or bending can be effectively prevented. The reinforcing plate 30 sticks to a release sheet 14 covering a surface of an adhesive layer 13 provided on a surface of a polarizing plate 12, the reinforcing plate 30 is applied on a corner 14A of the release sheet 14, and one end in a length direction of the reinforcing plate 30 protrudes outside from a side edge 11B on a short side of the laminated sheet 11 to form a protruding portion 31. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sheet member with a reinforcing member and a method for manufacturing a display panel.

  The manufacturing process of the liquid crystal panel constituting the liquid crystal display device is roughly as follows. After forming switching elements, pixel electrodes, and the like on the surfaces of the pair of glass substrates, the glass substrates are bonded to each other with a predetermined gap therebetween. Next, liquid crystal is filled between both glass substrates. Then, a polarizing plate is affixed on the outer surface of both glass substrates, respectively. Here, the process of attaching the polarizing plate to the glass substrate is usually performed by a fully automatic attaching apparatus.

In addition, what was described in following patent document 1 is known as an example of the above liquid crystal display devices.
JP 2001-91947 A

  However, when manufacturing a large liquid crystal panel, the large-size sticking device, the cassette that stocks the polarizing plate before use, and the transport device that transports the polarizing plate from the cassette to the sticking device are all panel size. In addition, it is necessary to increase the size, and an extremely large space is taken up in the production line. For this reason, a semi-manual manufacturing process that manually sets the polarizing plate to the attaching device and reduces stock space or the like may be employed. In such a case, the operation of transporting the polarizing plate from a separate storage location to the installation location of the affixing device and setting it on the affixing device is performed manually. Here, since the polarizing plate is a flexible thin sheet, if it is handled carelessly, it may bend and bend, so that the image quality of the liquid crystal panel may be deteriorated. For this reason, transportation has to be carefully performed by a plurality of people, and there is a limit to the efficiency of the manufacturing process.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a sheet member that is less likely to cause defects such as folds and is easy to handle.

  The sheet member with a reinforcing member of the present invention includes a sheet part and a reinforcing member that is laminated on the sheet part and has higher rigidity than the sheet part. Here, the reinforcing member is “laminated” on the sheet portion, and the sheet portion is composed only of the exposed sheet main body, and not only the reinforcing member is directly stacked on the sheet main body. It is intended to include a sheet body and any intermediate member stacked on the surface of the sheet body, and a reinforcing member laminated on the intermediate member.

  In addition, the display panel manufacturing method of the present invention includes a pair of glass substrates, an optical substance that is sealed between the pair of glass substrates and whose optical characteristics are changed by applying an electric field, and laminated on the outer surfaces of the pair of glass substrates. And a polarizing plate, an adhesive layer formed on one side of the polarizing plate, and a covering sheet covering the surface of the adhesive layer. A reinforcing step of attaching a reinforcing member to the outer surface of the covering sheet in the sheet portion to obtain a sheet member with a reinforcing member, and affixing to the glass substrate while holding a region where the reinforcing member exists in the sheet portion A conveying step of conveying the sheet member with the reinforcing member to a work place to be performed, a peeling step of peeling the covering sheet together with the reinforcing member, and the polarizing plate, the adhesive layer being present A laminating step of laminating the side on the glass substrate toward the glass substrate that is intended to run.

  In the present invention, the reinforcing member is preferably laminated so that the length direction thereof is along the longitudinal direction of the sheet portion. This is because if it is reinforced along the longitudinal direction where bending is easy, bending and bending can be prevented more effectively.

The sheet portion includes a sheet body and a covering sheet that is detachably stacked on the sheet body and covers the surface of the sheet body, and a reinforcing member is stacked on the surface of the covering sheet. It is preferable. According to such a configuration, the surface of the sheet main body is not damaged with the attaching and peeling operations of the reinforcing member. Moreover, when performing the operation | work which peels a coating sheet, it can carry out using a reinforcement member.
At this time, it is preferable that the reinforcing member is provided with a protruding portion that protrudes outward from the edge of the sheet portion in a state of being laminated on the sheet portion. This is because, when the peeling operation is performed, the protruding portion can be easily performed by using the protruding portion as a holding unit that is held by hand or machine. Furthermore, it is preferable that the reinforcing member is addressed to the corner of the covering sheet. This is because when the covering sheet is peeled off using the reinforcing member, the corners can be easily peeled off and the initial operation of the peeling work is facilitated. The reinforcing member has a fold portion that can be bent in a direction in which the end portion of the reinforcing member is separated from the sheet portion, and at least a part of the fold portion is sandwiched between two sides constituting the corner portion of the covering sheet. You may provide so that it may be located. Even with such a configuration, it is possible to easily create a trigger for peeling at the corners by bending the reinforcing member along the crease, and the initial operation of the peeling work is facilitated.

  Moreover, it is preferable that the reinforcing member is laminated so as to be peelable from the sheet portion. This is because the used reinforcing member can be reused.

  According to the present invention, since the sheet portion is reinforced by the reinforcing member, bending and bending of the sheet portion are suppressed. Thereby, it can prevent that defects, such as a crease, arise in a sheet part, and handling of a sheet member becomes easy.

<First Embodiment>
Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS. In the present embodiment, a laminated sheet 10 with a reinforcing plate having a polarizing plate 12 (corresponding to the sheet member with a reinforcing member of the present invention), and a liquid crystal panel 1 for a liquid crystal display device using the laminated sheet 10 with a reinforcing plate ( The present invention relates to a method for assembling a display panel.

  Here, as shown roughly in FIG. 8, the liquid crystal panel 1 is filled between a pair of glass substrates 21 and 21, which are bonded together with a predetermined gap therebetween, and both the glass substrates 21 and 21. A panel body 20 (see also a partially enlarged view in a broken-line circle in FIG. 8) composed of a liquid crystal 22 (corresponding to “an optical material whose optical characteristics change by application of an electric field”) of the present invention. Yes. The liquid crystal 22 filled between the glass substrates 21 and 21 is sealed with a sealing agent 23 around the liquid crystal 22. Further, polarizing plates 12 and 12 are respectively attached to the outer surfaces (surfaces opposite to the liquid crystal 22 side) of the glass substrates 21 and 21. Although not shown in detail, the glass substrate 21 on the backlight device side of both glass substrates 21 and 21 has a switching element (for example, TFT) connected to a source wiring and a gate wiring orthogonal to each other. The glass substrate 21 on the surface side is provided with R, G, and B pixel electrodes in a matrix.

  FIG. 1 shows a surface view of the laminated sheet 10 with a reinforcing plate, and FIG. 2 shows a side view of the laminated sheet 10 with a reinforcing plate as viewed from the short side edge. This laminated sheet 10 with a reinforcing plate includes a polarizing plate 12 including a polarizer capable of limiting the vibration of a passing light wave in a predetermined direction (in combination with a partially enlarged view in a chain line circle in FIGS. 2 and 3). reference). The polarizing plate 12 is formed in a rectangular shape that is substantially the same shape as the corresponding glass substrate 21.

  An adhesive layer 13 for adhering the polarizing plate 12 to the glass substrate 21 is formed on the entire surface of the front and back surfaces of the polarizing plate 12. The surface of the adhesive layer 13 is covered over the entire surface by a release sheet 14 (corresponding to the covering sheet of the present invention) formed in substantially the same shape as the polarizing plate 12. On the other hand, the other surface side of the polarizing plate 12 is covered over the entire surface by a protective sheet 15 made of resin formed in substantially the same shape as the polarizing plate 12. The protective sheet 15 is provided for the purpose of protecting the surface of the polarizing plate 12 in steps such as transporting the polarizing plate 12 and attaching it to the glass substrate 21, and is peeled off after the assembly of the liquid crystal panel 1 is completed. The laminated sheet 11 composed of the polarizing plate 12, the adhesive layer 13, the release sheet 14, and the protective sheet 15 corresponds to the sheet portion of the present invention.

  In the laminated sheet 11, a long plate-like reinforcing plate 30 (corresponding to the reinforcing member of the present invention) can be re-peeled on the outer surface of the release sheet 14 (surface opposite to the surface on the adhesive layer 13 side). It is pasted through an adhesive 32. The reinforcing plate 30 is made of synthetic resin, and has a rigidity higher than that of the laminated sheet 11, for example, by appropriately setting the material or thickness thereof. The length dimension of the reinforcing plate 30 is substantially equal to or slightly longer than the length of the laminated sheet 11 in the long side direction.

  The reinforcing plate 30 and the laminated sheet 11 are stacked with the long side edges 30A and 11A aligned. Further, one end portion in the length direction of the reinforcing plate 30 protrudes outward from the short side edge 11 </ b> B of the laminated sheet 11. Thereby, the lamination sheet 11 is reinforced along the longitudinal direction which is more flexible. At the same time, the reinforcing plate 30 is assigned to the corner portion 14A of the release sheet 14 and the protruding portion 31 protruding from the edge of the laminated sheet 11 peels the release sheet 14 from the polarizing plate 12 during the peeling operation. It functions as a holding part.

  Next, a method for assembling the liquid crystal panel 1 using the above-described laminated sheet 10 with a reinforcing plate will be described.

  First, the laminated sheet 11 is reinforced by sticking the reinforcing plate 30, and the laminated sheet 10 with a reinforcing plate is obtained (reinforcing process). An adhesive 32 is applied to one side of the reinforcing plate 30 except for the region that becomes the protruding portion 31. Then, the reinforcing plate 30 is overlaid on the laminated sheet 11 while the surface on which the adhesive 32 is applied is opposed to the outer surface of the release sheet 14 in the laminated sheet 11, and the two are bonded together. At this time, the long side edge 30 </ b> A of the reinforcing plate 30 is aligned with the long side edge 11 </ b> A of the laminated sheet 11. At the same time, the short side edge 30B of the reinforcing plate 30 is shifted outward from the short side edge 11B of the laminated sheet 11 by the length of the protruding portion 31 (the portion where the adhesive 32 is not applied). deep.

  Next, the laminated sheet 10 with the reinforcing plate is transported to a work place where the pasting work to the panel body 20 is performed (transport process). The transportation is performed by the operator carrying the laminated sheet 11 by hand. At this time, since the laminated sheet 11 is reinforced by the reinforcing plate 30, bending and bending of the laminated sheet 11 are suppressed. In particular, since the reinforcing plate 30 is arranged so that its longitudinal direction is along the longitudinal direction of the laminated sheet 11 and is reinforced along the longitudinal direction that is more flexible, bending and bending of the laminated sheet 11 are effective. To be suppressed. Moreover, since handling becomes easy by reinforcement, an operator can carry the laminated sheet 10 with a reinforcement board alone. Thereby, efficiency improvement of a conveyance work can be achieved.

  When arriving at the work place, a peeling process is performed to peel off the release sheet 14 from the polarizing plate 12. First, the laminated sheet 10 with a reinforcing plate is set in an attaching device (not shown in detail) with the release sheet 14 side facing upward. Next, the holding suction pad P1 provided in the attaching device is directed to the lower surface side (protective sheet 15 side) of the laminated sheet 10 with the reinforcing plate, and the air in the pad is sucked to reinforce the holding suction pad P1. The laminated sheet 10 with a plate is vacuum-adsorbed (FIG. 3). Then, the holding suction pad P1 is operated to turn the laminated sheet 10 with the reinforcing plate upside down and hold the release sheet 14 side downward (FIG. 4).

  Next, the peeling suction pad P2 is assigned to the lower surface side of the protrusion 31 in the reinforcing plate 30, and the reinforcing plate 30 is vacuum-sucked to the peeling suction pad P2 by sucking the air in the pad (FIG. 5). . In this state, the peeling suction pad P2 is pulled obliquely downward (in the direction of the chain line arrow in FIG. 5). Thereby, the edge part of the reinforcement board 30 leaves | separates from the lamination sheet 11, bending. The reinforcing plate 30 is made of resin and bends to some extent although it is more rigid than the laminated sheet 11. Therefore, the reinforcing plate 30 can be pulled away from the laminated sheet 11 while being bent in this way.

  When the reinforcing plate 30 is pulled away from the laminated sheet 11 in this way, the release sheet 14 adhered to the reinforcing plate 30 is pulled together with the reinforcing plate 30 and peeled off from the adhesive layer 13 (part in the chain line circle in FIG. 5). See also enlarged view). At this time, since the reinforcing plate 30 is assigned to the corner portion 14A of the release sheet 14, the release sheet 14 is peeled off from the corner portion 14A. In this way, by pulling the reinforcing plate 30, it is possible to easily create a trigger for peeling at the corner portion 14 </ b> A of the release sheet 14, so that the initial operation of the peeling work is facilitated.

  When the corner portion 14 </ b> A of the release sheet 14 is peeled off, the peeling suction pad P <b> 2 is pulled obliquely downward, and the entire release sheet 14 is peeled off together with the reinforcing plate 30. Thereby, it will be in the state where the adhesive bond layer 13 was exposed (refer also to the partial expanded view in the upper side dashed line circle in Drawing 6).

  When the adhesive layer 13 is thus exposed, the polarizing plate 12 is attached to the panel body 10 (attaching step). First, the polarizing plate 12 is conveyed onto the attachment base B on which the panel body 20 is placed (FIG. 6). Then, the polarizing plate 12 is lowered while being aligned, and is superimposed on the panel body 20 (FIG. 7). In this state, the roller R is pressed against the upper surface of the polarizing plate 12 (the surface on the protective sheet 15 side) to run. Thereby, the polarizing plate 12 is bonded to the glass substrate 21 of the panel body 20 via the adhesive layer 13. (See also a partially enlarged view in a chain line circle in FIG. 7). In this manner, the work of attaching the polarizing plate 12 to one outer surface of the pair of glass substrates 21 and 21 of the panel body 20 is completed.

  Thereafter, the polarizing plate 12 is similarly attached to the outer surface of the other glass substrate 21 in the panel body 20. In this way, the liquid crystal panel 1 is completed (FIG. 8). The completed liquid crystal panel 1 is transported to the next process, and after the protective sheet 15 is peeled off, a backlight device, a vessel, and the like are assembled.

  In addition, since the reinforcement board 30 was affixed on the peeling sheet 14 by the adhesive 32 which can be removed again, it can peel from the peeling sheet 14 after use, and can be reused.

  As described above, according to the present embodiment, since the laminated sheet 11 is reinforced by the reinforcing plate 30, bending and bending of the laminated sheet 11 are suppressed. Thereby, it can prevent that defects, such as a fold, arise in the lamination sheet 11, and the handling of the lamination sheet 11 becomes easy. At this time, the reinforcing plate 30 and the laminated sheet 11 are overlapped in the longitudinal direction so that the laminated sheet 11 is reinforced along the longitudinal direction, which is more flexible, so that the bending and bending can be effectively performed. Can be prevented.

  The reinforcing plate 30 is attached to the release sheet 14 that covers the surface of the adhesive layer 13 provided on the polarizing plate 12. If it does in this way, the operation | work which peels the peeling sheet 14 can be performed using the reinforcement board 30. FIG. In addition, if the reinforcing plate 30 is directly attached to the polarizing plate 12, there is a concern about damage to the surface of the polarizing plate 12 due to the attaching and peeling operations of the reinforcing plate 30. Such worry is unnecessary.

  Further, since the reinforcing plate 30 is assigned to the corner portion 14A of the release sheet 14, when the release sheet 14 is peeled off using the reinforcing plate 30, it is easy to cause the corner portion 14A of the release sheet 14 to be peeled off. Therefore, the initial operation of the peeling work is facilitated.

  Further, one end portion in the length direction of the reinforcing plate 30 is a protruding portion 31 that protrudes outward from the short side edge 11 </ b> B of the laminated sheet 11. Thereby, when this peeling part 31 peels the peeling sheet 14, it can function as a holding part hold | maintained by the adsorption pad P2 for peeling. In this case, when the peeling suction pad P2 is applied, the peeling suction pad P2 collides with the laminated sheet 11, and the risk of damaging the polarizing plate 12 is reduced. Therefore, the peeling workability is improved. be able to.

Second Embodiment
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. 9 and 10. The main difference between this embodiment and the first embodiment is that the reinforcing plate 41 is separated into a main body 44 and a separation piece 45 by a cutting line 43 (corresponding to a crease part of the present invention), and is bent from the cutting line 43. It is in the point that it is possible. In addition, the same code | symbol is attached | subjected to the structure similar to 1st Embodiment, and description is abbreviate | omitted.

  The laminated sheet 40 with a reinforcing plate of the present embodiment includes a laminated sheet 11 having the same configuration as that of the first embodiment, and a reinforcing plate 41 that reinforces the laminated sheet 11 by being attached to the outer surface of the release sheet 14 in the laminated sheet 11. (FIG. 9). The reinforcing plate 41 is formed in a long plate shape with a metal having rigidity higher than that of the laminated sheet 11, and is attached to the release sheet 14 via a releasable adhesive (not shown). As in the first embodiment, the reinforcing plate 41 and the laminated sheet 11 are stacked with the long side edges 41A and 11A aligned with each other, and one end portion in the length direction of the reinforcing plate 41 is the laminated sheet 11. The projecting portion 42 projects outward from the short side edge 11B.

  The reinforcing plate 41 reaches the long side edge 41A (side along the long side edge 11A of the laminated sheet 11) starting from the short side edge 41B on the side protruding from the laminated sheet 11. It is cut by the cutting line 43 to the position. Thus, the reinforcing plate 41 is divided into a separating piece 45 that is a small triangular piece on the short side edge 41 </ b> B side and the remaining main body 44. The end point of the cutting line 43 is in a region overlapping the long side edge 11A of the laminated sheet 11 at the long side edge 41A, and a part of the cutting line 43 is connected to the long side edge 11A of the laminated sheet 11 It is located in a region sandwiched by the short side edge 11B (which coincides with the two sides constituting the corner 14A of the release sheet 14). In other words, the cutting line 43 is provided across both the region protruding from the laminated sheet 11 and the region overlapping the laminated sheet 11 in the reinforcing plate 41. Thereby, the area | region which overlaps with the separation piece 45 in the peeling sheet 14 is made to contain the corner | angular part 14A. The separation piece 45 and the main body portion 44 are connected by a hinge 46 so that the separation piece 45 can be rotated with respect to the main body portion 44 in a direction away from the laminated sheet 11 with the cutting line 43 as a rotation axis. It is connected.

  In order to assemble the liquid crystal panel 1 using the laminated sheet 40 with the reinforcing plate, first, the laminated sheet 11 is reinforced by attaching the reinforcing plate 41 (reinforcing step). At this time, similarly to the first embodiment, the long side edge 41A of the reinforcing plate 30 is aligned with the long side edge 11A of the laminated sheet 11. At the same time, the short side edge 41B on the side of the reinforcing plate 30 where the separation piece 45 is formed is shifted outward from the short side edge 11B of the laminated sheet 11 by the length of the protruding portion 42. At this time, the cutting line 43 straddles the short side edge 11B of the laminated sheet 11 so that a part of the cutting line 43 overlaps the release sheet 14. Thereby, the area | region which overlaps with the separation piece 45 in the peeling sheet 14 is made to contain the corner | angular part 14A.

  Next, the laminated sheet 40 with a reinforcing plate is transported to a predetermined work place as in the first embodiment (transport process). At this time, since the laminated sheet 11 is reinforced by the reinforcing plate 41 as in the first embodiment, bending and bending of the laminated sheet 11 are suppressed. Moreover, since handling becomes easy by reinforcement, an operator can carry the laminated sheet 40 with a reinforcement board alone.

  Next, the peeling process which peels off the peeling sheet 14 from the polarizing plate 12 is performed. Similarly to the first embodiment, the laminated sheet 40 with the reinforcing plate is vacuum-sucked by the holding suction pad P1 of the attaching device, and is held with the release sheet 14 side facing downward.

  Next, an operator picks up the separation piece 45 of the reinforcement board 41 by hand, and raises it in the direction away from the lamination sheet 11 (FIG. 10). Then, the corners 14 </ b> A of the release sheet 14 that adheres to the reinforcing plate 41 are peeled off from the adhesive layer 13 together with the reinforcing plate 41. Here, since the reinforcing plate 41 is formed of a metal having high rigidity, it is difficult to separate the reinforcing plate 41 from the laminated sheet 11 while being bent as in the first embodiment. For this reason, in the present embodiment, the reinforcing plate 41 is separated by the cutting line 43 and the separating piece 45 is rotatably connected to the main body 44 so that the reinforcing plate 41 can be bent from the cutting line 43. At the same time, the separation piece 45 is overlapped with the corner portion 14 </ b> A of the release sheet 14. According to such a configuration, by bending the reinforcing plate 41 from the cutting line 43, the corner 14A of the release sheet 14 can be easily triggered, and the initial operation of the peeling operation is facilitated. Moreover, since the part which arrives at the protrusion part 42 in the isolation | separation piece 45 can be pinched and operated with a finger | toe, workability | operativity is good.

  Next, the entire main body 44 of the reinforcing plate 41 is peeled off from the polarizing plate 12 together with the release sheet 14 so as to be raised in the width direction (the direction along the short direction of the laminated sheet 11; the thick arrow direction in FIG. 10). And the main-body part 44 is pulled in the direction along the transversal direction of the lamination sheet 11 as it is, and the whole peeling sheet 14 is peeled off from the adhesive bond layer 13. FIG.

  When the adhesive layer 13 is thus exposed, the panel body 20 is carried under the polarizing plate 12, and the polarizing plate 12 is attached to the outer surfaces of the glass substrates 21 and 21 in the same manner as in the first embodiment. Attaching process).

  In this embodiment, since the reinforcing plate 41 is attached to the release sheet 14 with a peelable adhesive, the reinforcing plate 41 can be peeled from the release sheet 14 and reused after use.

  As described above, according to this embodiment, the same operational effects as those of the first embodiment can be obtained. That is, since the laminated sheet 11 is reinforced by the reinforcing plate 41, bending and bending of the laminated sheet 11 are suppressed. In addition, since the reinforcing plate 41 is attached to the release sheet 14 that covers the surface of the adhesive layer 13 provided on the surface of the polarizing plate 12, the operation of peeling the release sheet 14 is performed using the reinforcing plate 41. Reinforcement can be performed without damaging the surface of the polarizing plate 12. Furthermore, since one end portion in the length direction of the reinforcing plate 41 protrudes outward from the short side edge of the laminated sheet 11, the protruding portion 42 functions as a holding portion that is picked by hand during the peeling operation. Can do.

  In addition, the reinforcing plate 41 is divided into two pieces by a cutting line 43, and the separation piece 45 is connected to the main body 44 so as to be rotatable. Thereby, the reinforcing plate 41 can be bent from the cutting line 43. And it is made for a part of cutting line 43 to be located in an inner area | region rather than two sides (long side edge 11A, short side edge 11B) which comprise the corner | angular part 14A of the peeling sheet 14 in the lamination sheet 11. FIG. Thus, a part of the separation piece 45 folded from the cutting line 43 overlaps the release sheet 14. According to such a configuration, it is possible to easily create a trigger for peeling on the release sheet 14 by bending the reinforcing plate 41 from the cutting line 43. In particular, by causing a part of the separation piece 45 to overlap the corner portion 14A of the release sheet 14, it is possible to easily create the trigger for the corner portion 14A of the release sheet 14, and the initial operation of the release operation can be performed. It becomes easy.

The technical scope of the present invention is not limited by the above-described embodiments, and, for example, those described below are also included in the technical scope of the present invention. In addition, the technical scope of the present invention extends to an equivalent range.
(1) According to each of the above embodiments, the reinforcing plates 30 and 41 are attached on the release sheet 14, but the reinforcing member is attached directly to the sheet main body without an intermediate member such as a release sheet. It does not matter. In this case, it is preferable that the reinforcing member is detachably attached, or is attached to a portion that does not hinder the use of the reinforcing member while being attached (for example, in the case of a display panel, a portion that is out of the display region).
(2) When an intermediate member such as a release sheet is interposed between the reinforcing member and the sheet main body as in each of the above embodiments, it is sufficient that the intermediate member can be peeled from the sheet main body. The reinforcing member may be bonded to the intermediate member so as not to be peeled off.
(3) In each of the above embodiments, the protective sheet 15 also functions as the covering sheet of the present invention. Therefore, the reinforcing plates 30 and 41 may be attached to the protective sheet 15. In this case, if the reinforcing plates 30 and 41 are attached to the protective sheet 15 with a releasable adhesive, the reinforcing plates 30 and 41 can be peeled off from the protective sheet 15 after use and reused. Bonding is impossible.
(4) The attachment position of the reinforcing member is not limited to the above embodiment, and for example, the short side edge 30B of the reinforcing plate 30 may be aligned with the short side edge 11B of the laminated sheet 11, and the laminated sheet 11 may be located inside the short side edge 11B. Alternatively, the long side edge 30 </ b> A of the reinforcing plate 30 may be positioned outside the long side edge 11 </ b> A of the laminated sheet 11, or may be positioned inside the short side edge 11 </ b> B.
(5) You may arrange | position a reinforcement member so that the elongate direction may follow the transversal direction of a sheet | seat part. Even in this case, the position where the reinforcing member is attached to the sheet portion is not particularly limited, but it is preferable that one end portion of the reinforcing member in the length direction protrudes outward from the side edge of the sheet portion.
(6) When the reinforcing member is made of resin as in the first embodiment, the reinforcing member may be provided with a fold. Further, even when the reinforcing member is made of metal as in the second embodiment, the folding portion is not necessarily provided.
(7) In 1st Embodiment, although the reinforcement board 30 and the peeling sheet 14 were peeled by operation of the adsorption pad P2 for peeling, you may perform a peeling operation | work manually. In this case, since the protrusion 30A can be picked and operated by a finger, workability is good. On the other hand, in 2nd Embodiment, you may perform a peeling operation | work automatically by a sticking apparatus.
(8) In each of the above embodiments, the present invention is applied to the laminated sheet 10 with a reinforcing plate including the polarizing plate 12 for a liquid crystal display device. However, the present invention is not limited to the above embodiment, and the present invention requires prevention of bending and damage. Can be applied to the sheet in general.

Surface view of laminated sheet with reinforcing plate in the first embodiment Side view of laminated sheet with reinforcing plate in the first embodiment The side view which shows a mode that the suction pad for holding was vacuum-sucked to the laminated sheet with a reinforcement board in 1st Embodiment. The side view which shows a mode that the laminated sheet with a reinforcement board was turned upside down in 1st Embodiment The side view which shows a mode that a peeling sheet is peeled using a reinforcement board in 1st Embodiment. The side view which shows a mode that a polarizing plate is laminated | stacked on a panel main body through an adhesive bond layer in 1st Embodiment. The side view which shows a mode that a polarizing plate is pressed on a panel main body with a roller in 1st Embodiment. Side view of the liquid crystal panel of the first embodiment Surface view of laminated sheet with reinforcing plate in the second embodiment The partial enlarged view which looked at the mode which peels a peeling sheet using a reinforcement board in 2nd Embodiment from the surface at the side of a peeling sheet

Explanation of symbols

1 ... Liquid crystal panel (display panel)
10, 40 ... Laminated sheet with reinforcing plate (sheet member with reinforcing member)
11 ... Laminated sheet (sheet part)
12 ... Polarizing plate (sheet body)
13 ... Adhesive layer 14 ... Release sheet (coating sheet)
14A ... Corner 21 ... Glass substrate 22 ... Liquid crystal (optical material)
30, 41 ... Reinforcing plate (reinforcing member)
31, 42 ... Projection 43 ... Cutting line (crease)

Claims (8)

A seat part;
A reinforcing member laminated on the sheet portion and having higher rigidity than the sheet portion;
A sheet member with a reinforcing member.   The sheet | seat member with a reinforcement member of Claim 1 in which the said reinforcement member is laminated | stacked so that the length direction may follow the longitudinal direction of the said sheet | seat part. The sheet portion includes a sheet body, and a covering sheet that is detachably stacked on the sheet body and covers the surface of the sheet body,
The sheet member with a reinforcing member according to claim 1 or 2, wherein the reinforcing member is laminated on a surface of the covering sheet.   The sheet member with a reinforcing member according to claim 3, wherein the sheet main body and the covering sheet are formed in a rectangular shape, and the reinforcing member is addressed to a corner portion of the covering sheet.   The sheet | seat member with a reinforcement member of Claim 3 or Claim 4 with which the said reinforcement member is provided with the protrusion part which protrudes outside from the edge of the said sheet | seat part in the state laminated | stacked on the said sheet | seat part.   The reinforcing member has a fold portion that can be bent in a direction away from the sheet portion, and at least a part of the fold portion is sandwiched between two sides constituting the corner portion of the covering sheet. The sheet | seat member with a reinforcement member of Claim 4 or Claim 5 provided so that it may be located in the area | region to be.   The sheet | seat member with a reinforcement member in any one of Claims 1-6 by which the said reinforcement member is laminated | stacked so that peeling with respect to the said sheet | seat part. A method of manufacturing a display panel, comprising: a pair of glass substrates; an optical substance that is sealed between the pair of glass substrates and changes optical characteristics when an electric field is applied; and a polarizing plate that is laminated on the outer surfaces of the pair of glass substrates. Because
Reinforcing by attaching a reinforcing member to the outer surface of the covering sheet in a sheet portion comprising the polarizing plate, an adhesive layer formed on one side of the polarizing plate, and a covering sheet covering the surface of the adhesive layer A reinforcing step for obtaining a sheet member with a member;
A transporting step of transporting the sheet member with the reinforcing member to a work place for attaching to the glass substrate while holding the region where the reinforcing member is present in the sheet part,
A peeling step of peeling the covering sheet together with the reinforcing member;
A laminating step of laminating the polarizing plate on the glass substrate with the side on which the adhesive layer is present facing the glass substrate;
The manufacturing method of the display panel which performs.

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