WO2012002281A1 - Substrate laminate body - Google Patents

Abstract

Disclosed is a substrate laminate body capable of simply protecting the substrates. The laminate body (100), in which the substrates (10) and a substrate protective members (20) are stacked alternately, is provided with substrates (10) and with substrate protective members (20) sandwiched between the substrates (10). The substrate protective members (20) are rod-shaped, and a plurality of said rod-shaped members (20) is positioned between the substrates (10).

Description

Substrate stack

The present invention relates to a substrate stack in which substrates are stacked. In particular, the present invention relates to a stack in which liquid crystal panels or glass substrates for liquid crystal panels are stacked. The present invention also relates to a protective material in a substrate stack.
Note that this application claims priority based on Japanese Patent Application No. 2010-148904 filed on June 30, 2010, the entire contents of which are incorporated herein by reference. .

A liquid crystal panel, which is a component of a liquid crystal display device (LCD), has a structure in which a pair of glass substrates are opposed to each other with a predetermined gap secured. Conventionally, a resin case provided with grooves for inserting glass substrates one by one has been used for transporting and storing glass substrates constituting a liquid crystal panel. However, in this case, since the substrates are stored in a state where a gap is generated between the substrates, there is a problem that the storage efficiency is poor (for example, Patent Document 1).

Therefore, a packaging form in which a plurality of glass substrates and slip sheets are alternately stacked and obliquely stacked on an oblique pallet has been proposed (Patent Document 2). Also, a packaging form (Patent Document 3) in which a plurality of glass substrates and frame-shaped spacing members that contact the edges of the glass substrates are alternately stacked, and obliquely stacked on an obliquely stacked pallet, and each glass substrate is a PET film. A packaging form (Patent Document 4) is also proposed in which these are sealed and stacked. Further, a packaging form (Patent Document 5) is proposed in which glass substrates are packaged one by one in a bag-like body made of a laminate film having an unevenly processed inner wall and packed in a case.

However, all of the packaging forms proposed in Patent Documents 2 to 5 have problems. In the method of stacking obliquely as shown in Patent Documents 2 and 3, when the size of the glass substrate is large, the glass substrate may be bent due to its own weight, which may cause damage. On the other hand, the packaging forms disclosed in Patent Documents 4 and 5 have a problem that the packaging of the glass substrate takes a lot of man-hours and the packaging cost increases.

FIG. 1 shows a configuration of a stack 1000 in which substrates 110 and interleaf sheets 120 are alternately stacked. The substrate 110 is a glass substrate used for a color filter, a thin film transistor, etc. of a liquid crystal panel. An interleaf paper 120 is sandwiched between the substrate 110 and the substrate 110. Patent Document 1 discloses a double-layered substrate storage container including an inner box that stores the stack 1000 and an outer box that stores the inner box. And in the board | substrate storage container disclosed by patent document 1, a uniform pressure is made to act on the upper surface whole area of the stacking body 1000 with an airbag, and each board | substrate 110 is clamped and fixed with the uniform pressure in the whole area | region. And the movement of the substrate 110 during transportation can be suppressed.

JP 2006-327642 A JP 2000-351449 A JP 2000-203679 A JP 2003-237833 A Japanese Patent Laid-Open No. 11-1205

The inventor of the present application examined a stack 2000 in which substrates 210 and interleaf sheets 220 as shown in FIG. 2 were alternately stacked. When the stacked body 2000 as shown in FIG. 2 is manufactured, a sheet-like slip sheet (glass protective material) 220 is stacked on the substrate 210, and the substrate 210 is placed on the slip sheet 220. Here, it has been found that the following problems occur when the stack 2000 is manufactured by machine automation.

First, as shown in FIG. 2, the slip sheet 220a may be bent, in which case it is difficult for the machine to place the bent slip sheet 220a on the substrate 210 (arrow 230). In addition, as shown in FIG. 3, when the substrate 210a is taken out from the stack 2000 (arrow 250), the substrate 210a and the slip sheet 220b may not be separated, and the slip sheet 220c may stick to the substrate 210a due to static electricity. . The interleaf 220 is often treated with an antistatic agent, but it is difficult to prevent the interleaf 220 from sticking to the substrate 210 every time.

In order to prevent sticking, it is possible to process an air vent hole or the like in the interleaf paper 220, but it is not preferable because the processing requires cost. In addition, the slip sheet 220 needs to be created according to the size of the substrate 210, and therefore, a storage place for the slip sheet 220 corresponding to each size is necessary.

On the other hand, other methods, that is, a method using a resin case provided with a groove for inserting substrates one by one, a method of stacking diagonally, and a method of packaging substrates one by one have drawbacks. Therefore, even if there is a defect in the method of stacking the substrates and the interleaving paper alternately to form the stacked body, it is the actual situation to accept the defect while accepting the defect. Under such circumstances, the inventor of the present application tried to solve the problem of protecting the substrate during transportation instead of the conventional extension.

The present invention has been made in view of this point, and a main object of the present invention is to provide a substrate stack that can easily protect a substrate.

The stack according to the present invention is a stack in which substrates and substrate protection materials are alternately stacked, and includes a substrate and a substrate protection material sandwiched between the substrates, and the substrate protection material is a rod-shaped member. Yes, a plurality of the rod-shaped members are arranged between the substrates.

In a preferred embodiment, the substrate is a liquid crystal panel, the bar-shaped member has a columnar shape, and the bar-shaped member is disposed along the short side direction of the liquid crystal panel.

In a preferred embodiment, the substrate is a glass substrate constituting a liquid crystal panel.

In a preferred embodiment, the stack includes at least 10 substrates.

In a preferred embodiment, the plurality of rod-like members are arranged at unequal intervals between the substrates.

The substrate protection material according to the present invention is a substrate protection material used for a stacked body in which substrates are stacked, and the substrate protection material is a rod-shaped member.

The substrate storage container according to the present invention includes a stacked body in which substrates and substrate protective materials are alternately stacked, and a container portion that stores the stacked body, and the substrate protective material is a rod-shaped member.

In a preferred embodiment, a support portion that suppresses the movement of the stack is provided on the inner wall of the container portion.

In a preferred embodiment, the container portion is formed with a groove for accommodating the rod-shaped member.

The method for manufacturing a stacked body according to the present invention is a method for manufacturing a stacked body in which substrates are stacked. A step of preparing a first substrate, and a plurality of first rod-shaped members are disposed on the first substrate. And a step of disposing a second substrate on the first substrate with the plurality of first rod-shaped members interposed therebetween.

In a preferred embodiment, a step of arranging a plurality of second rod-shaped members on the second substrate, and a third on the second substrate with the plurality of second rod-shaped members interposed therebetween. Placing the substrate.

In a preferred embodiment, the step of arranging the plurality of first rod-shaped members includes a step of preparing a supply device in which the first rod-shaped members are arranged in parallel, and the supply device above the first substrate. And arranging the first rod-shaped member on the surface of the first substrate from the supply device.

The method for taking out a substrate according to the present invention is a method for taking out a substrate from a stacked body in which substrates are stacked, a step of preparing a stacked body in which substrates and rod-like members are alternately stacked, and a position on the uppermost layer in the stacked body Removing the first substrate, and removing the rod-shaped member disposed on the second substrate by tilting the second substrate located below the first substrate.

In a preferred embodiment, the rod-shaped member disposed on the third substrate is removed by further removing the second substrate and tilting the third substrate located below the second substrate. Including the step of.

In a preferred embodiment, in the step of removing the bar-shaped member, the bar-shaped member that moves by tilting the second substrate is collected in a receiving container.

According to the present invention, since the substrate protective material is a rod-shaped member in the stacked body in which the substrate and the substrate protective material are alternately stacked, the substrate is easily protected as compared with the case where the slip sheet is used as the substrate protective material. A substrate stack that can be provided can be provided.

It is sectional drawing which shows the structure of the laminated body. It is sectional drawing which shows the structure of the stack body 2000 in case the interleaving paper 220a is bent. It is sectional drawing which shows the structure of the laminated body 2000 in case the interleaving paper 220c sticks. It is sectional drawing which shows typically the structure of the stacked body 100 which concerns on embodiment of this invention. 2 is a cross-sectional view schematically showing a configuration of a liquid crystal panel as a substrate 10. It is a perspective view of the stacked body 100 which shows the state which removed the board | substrate 10a. 5 is a perspective view for explaining a method of arranging the substrate protection material 20. FIG. FIG. 6 is a perspective view for explaining a method for collecting the substrate protection material 20. It is sectional drawing which shows the example of a modification of the stacking body 100 typically. 4 is a top view schematically showing a configuration of a substrate storage container 80. FIG. 4 is a top view schematically showing a configuration of a substrate storage container 80. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, components having substantially the same function are denoted by the same reference numerals for the sake of brevity. In addition, this invention is not limited to the following embodiment.

FIG. 4 schematically shows the configuration of the stack 100 according to the embodiment of the present invention. The stacked body 100 of the present embodiment has a structure in which the substrates 10 and the substrate protective material 20 are alternately stacked, and is configured by the substrate 10 and the substrate protective material 20 sandwiched between the substrates 10. . The substrate protection member 20 of the present embodiment is a rod-shaped member, and a plurality of rod-shaped members 20 are arranged between the substrates 10.

Each rod-shaped member 20 in the present embodiment has a cylindrical shape, and the diameter of each rod-shaped member 20 is equal (or substantially equal). The material which comprises the rod-shaped member 20 is resin, for example. The diameter of the rod-shaped member 20 of the present embodiment is, for example, 1 mm to 2 mm, and the material is, for example, polyethylene, polystyrene, polypropylene, glass fiber, or the like. As the number, the diameter, the material, and the like of the rod-shaped member 20, a suitable one can be adopted as appropriate.

The substrate 10 of this embodiment is, for example, a liquid crystal panel. The liquid crystal panel 10 generally has a rectangular shape as a whole, and includes a pair of translucent substrates (glass substrates) 11 and 12 as shown in FIG. Both substrates 11 and 12 are cut from a large base material called mother glass in the manufacturing process. Both the substrates 11 and 12 are arranged to face each other, and a liquid crystal layer 14 is provided between them. The liquid crystal layer 14 is made of a liquid crystal material whose optical characteristics change with application of an electric field between the substrates 11 and 12. A sealing agent 15 is provided on the outer edge portions of the substrates 11 and 12 to seal the liquid crystal layer 13. Further, polarizing plates 17 and 18 are attached to the outer surfaces of both the substrates 11 and 12, respectively.

In the present embodiment, the front side of both the substrates 11 and 12 is the color filter substrate (CF substrate) 11, while the back side is the array substrate 12. Note that the substrate 10 shown in FIG. 4 is not limited to a liquid crystal panel, and may be a CF substrate (including a product being manufactured) or an array substrate (including a product being manufactured).

FIG. 6 is a perspective view of the stacked body 100 showing a state in which the substrate 10a located at the uppermost layer is removed. Here, the substrate 10 a is adsorbed by the substrate adsorbing device 30 and can be moved as indicated by an arrow 35. The substrates 10 in the stack 100 are stacked along a vertical direction (gravity direction) 90, and a substrate protection member 20 made of a rod-shaped member is disposed between the substrates 10 and 10. In the example shown in FIG. 4, the substrate protective material 20 is arranged evenly (equally spaced) between the substrates 10, but the substrate 10 is held with the space between the substrate 10 and the substrate 10. 6 can be arranged at unequal intervals as shown in FIG. In the example shown in FIG. 6, the substrate 10 has a rectangular shape, and the substrate protection members 20 are arranged in parallel along the short side direction 92 of the substrate 10.

In the configuration of the present embodiment, the substrate 10 can be sequentially taken out from the stack 100 using the substrate suction device 30. In addition, in the state shown in FIG. 6, the substrate 10 can be stacked by stacking the substrate 10 a on the substrate protective material 20 disposed on the surface of the substrate 10 b. In the stacked body 100 of the present embodiment, for example, five or more substrates 10 are included, and from the viewpoint of storage efficiency, preferably ten or more substrates 10 are included.

Next, an arrangement method of the substrate protection material 20 sandwiched between the substrates 10 will be described. As shown in FIG. 7, the substrate protection member (bar-shaped member) 20 is housed in a bar-shaped member supply device 40. The supply device 40 includes a support member 42 that supports the rod-shaped members 20 so as to be arranged in parallel. Here, the term “parallel” is not limited to a strict parallel in the geometrical sense, but includes a substantially parallel one including a case where a displacement occurs when the rod-shaped member 20 is supplied. When the supply device 40 is tilted obliquely as shown in the drawing, the rod-shaped member 20 moves from the support member 42 of the supply device 40 to the surface of the substrate 10 as indicated by an arrow 45. Then, if the rod-shaped member 20 is supplied over the entire surface of the substrate 10 while moving the supply device 40 in sequence, the arrangement of the rod-shaped member 20 on the substrate 10 ends.

Next, further substrates 10 are stacked so as to sandwich the bar-shaped member 20 disposed on the surface of the substrate 10. The stacking of the substrates 10 can be performed using, for example, the substrate suction device 30 shown in FIG. In addition, the stack member 100 of this embodiment is produced by supplying the rod-shaped member 20 again on the further substrate 10 and repeating the process.

Next, a method for collecting the rod-shaped member 20 will be described. As shown in FIG. 8, when the horizontal substrate 10 s is tilted obliquely, the rod-shaped member 20 moves downward as indicated by an arrow 56 and can be collected. In the example shown in FIG. 8, the receiving container 50 is disposed in the direction of pulling the substrate 10 t inclined by lifting one side as indicated by an arrow 55, and the rod-shaped member 20 is collected in the receiving container 50. An opening 52 is formed on the upper surface of the receiving container 50, and the rod-shaped member 20 that has moved on the surface of the substrate 10 in the direction of the arrow 56 passes through the opening 52 as indicated by the arrow 58 and receives the receiving container 50. It is collected at. The collected rod-shaped member 20 is again used for the stack 100 of the present embodiment.

In the configuration of the present embodiment, the substrate protective material 20 is a rod-shaped member in the stacked body 100 in which the substrates 10 and the substrate protective material 20 are alternately stacked. Therefore, it is possible to realize the substrate stack 100 that can easily protect the substrate 10 as compared with the stack 2000 in which the substrates 210 and the interleaf paper 220 are alternately stacked as shown in FIG. That is, in the case of the stack 2000 shown in FIG. 2, the slip sheet 220 a may be bent, and it is difficult to place the bent slip sheet 220 a on the substrate 210. On the other hand, in the configuration of the present embodiment, since the substrate protection member 20 is a rod-shaped member, such a problem of bending can be avoided.

In addition, as shown in FIG. 3, when the substrate 210a is taken out, the interleaf paper 220c may stick due to static electricity, which may cause a problem in taking out the substrate 210. On the other hand, in the configuration of the present embodiment, since the substrate protection member 20 is a rod-shaped member, such a problem of sticking due to static electricity can be avoided.

Furthermore, since it is necessary to make the interleaf paper 220 according to the size of the substrate 210, a storage place for the interleaf paper 220 corresponding to each size is necessary. On the other hand, since the substrate protection member 20 is a rod-shaped member in the configuration of the present embodiment, even if the rod-shaped member 20 corresponding to each size is made separately, the storage place is significantly larger than that of the interleaf paper 220. Can be small. In addition, even when the rod-shaped member 20 corresponding to each size is manufactured, it can be basically handled by changing the length of the rod-shaped member 20, so that there is also a technical advantage in that respect. . For example, even when the size corresponds to the size of a substrate 10 (for example, a 108 inch liquid crystal panel) 10 inches or more, a rod-like member 20 having a length corresponding to the size may be produced and used as the substrate protective material 20.

In addition, in the configuration shown in FIG. 3, a high-function suction device that includes both a suction portion that sucks the glass substrate 210 and a suction portion that sucks the slip sheet 220 is necessary, and the device cost is high. Become. On the other hand, in the configuration of the present embodiment, since an adsorption device including a portion that adsorbs the substrate (glass substrate) 10 can be used, there is also a technical advantage in that respect. And compared with the method of using the resin-made case provided with the groove | channel which inserts a board | substrate one by one, in the structure of this embodiment, there exists an advantage that the accommodation efficiency of the board | substrate 10 is high.

In the configuration example shown in FIG. 6, the rod-like members 20 are arranged in parallel (or substantially parallel) on the substrate 10, but not limited thereto, as shown in FIG. 9, they are arranged in parallel. A rod-shaped member 20t deviating from parallelism may exist together with the rod-shaped member 20s. This is because even if such a rod-shaped member 20t deviating from parallel (non-parallel) exists, the distance between the substrate 10 and the substrate 10 can be maintained and the substrate 10 can be protected.

Further, the stack 100 of the present embodiment can be stored in the substrate storage container 80 as shown in FIG. The substrate storage container 80 includes a stacked body 100 in which the substrates 10 and the substrate protection material (bar-shaped member) 20 are alternately stacked, and a container portion 82 that stores the stacked body 100. In the example shown in FIG. 10, a support portion 84 that suppresses the movement of the stack 100 is provided on the inner wall of the container portion 82. Specifically, the support portion 84 is configured to face the end portion (side) 100e of the stack 100 with an interval S (for example, several millimeters). By providing the support part 84 in the container part 82, it is possible to suppress the stacked body 100 from moving in the container part 82 during transportation of the substrate storage container 80.

It is also possible to modify the substrate storage container 80 as shown in FIG. In the container portion 82 of the substrate storage container 80 shown in FIG. 11, a groove 85 for storing the substrate protection material (bar-shaped member) 20 is formed. When the container portion 82 is configured such that the grooves 85 are equally spaced, when the rod-shaped member 20 is supplied using the container portion 82, the rod-shaped members 20 are equally spaced on the substrate 10. It becomes possible to arrange. In this case, the length of the rod-shaped member 20 is set to be longer than the length in the short side direction of the substrate 10 and to be accommodated in the groove 85.

In the above-described embodiment, the substrate 10 is described as an example of a liquid crystal panel (for example, 30 inches to 60 inches) as shown in FIG. 5, but is not limited thereto. The substrate 10 is not limited to the size of the glass substrate after being cut out to the dimensions of the liquid crystal panel, and may be the size of the mother glass before being cut out. In addition, the substrate 10 is not limited to a liquid crystal panel, but may be used for other purposes (for example, a PDP or other flat panel display), or may be a substrate other than a glass substrate (for example, a resin substrate). There may be.

In the above-described embodiment, the rod-shaped member 20 has been described as an example of a cylindrical shape, but is not limited thereto. As the rod-shaped member 20, for example, a circular tube-shaped member can be used. Alternatively, as the rod-shaped member 20, for example, a member having a hexagonal cross section may be used.

As mentioned above, although this invention has been demonstrated by suitable embodiment, such description is not a limitation matter and, of course, various modifications are possible.

According to the present invention, it is possible to provide a substrate stack that can easily protect a substrate.

10 Substrate (LCD panel)
11 CF substrate 12 Array substrate 14 Liquid crystal layer 15 Sealant 17, 18 Polarizing plate 20 Substrate protective material (bar-shaped member)
DESCRIPTION OF SYMBOLS 30 Substrate adsorption | suction apparatus 40 Supply apparatus 42 Support member 50 Reception container 52 Opening part 80 Substrate storage container 82 Container part 84 Support part 85 Groove 100 Stack body 110 Substrate 120 Interleaf paper 210 Substrate sheet 220 Interleaf paper 1000 Stack body 2000 Stack body

Claims (15)

A stacked body in which substrates and substrate protection materials are alternately stacked,
A substrate,
A substrate protective material sandwiched between the substrates,
The substrate protective material is a rod-shaped member,
A stack in which a plurality of the rod-shaped members are arranged between the substrates. The substrate is a liquid crystal panel;
The rod-shaped member has a cylindrical shape,
The stack according to claim 1, wherein the rod-shaped member is disposed along a short side direction of the liquid crystal panel. The stack according to claim 1, wherein the substrate is a glass substrate constituting a liquid crystal panel. The stack according to claim 1, wherein at least ten of the substrates are included in the stack. The stack according to any one of claims 1 to 4, wherein the plurality of rod-shaped members are arranged at unequal intervals between the substrates. A substrate protective material used for a stack of stacked substrates,
The substrate protection material is a substrate protection material which is a rod-shaped member. A stacked body in which substrates and substrate protection materials are alternately stacked;
A container portion for storing the stack,
A substrate storage container, wherein the substrate protective material is a rod-shaped member. The substrate storage container according to claim 7, wherein a support part for suppressing movement of the stacked body is provided on an inner wall of the container part. The substrate storage container according to claim 7, wherein a groove for storing the rod-shaped member is formed in the container part. A method of manufacturing a stack of stacked substrates,
Preparing a first substrate;
Disposing a plurality of first rod-shaped members on the first substrate;
Placing the second substrate on the first substrate across the plurality of first rod-shaped members. A step of arranging a plurality of second rod-shaped members on the second substrate;
The method for manufacturing a stack according to claim 10, further comprising: placing a third substrate on the second substrate across the plurality of second rod-shaped members. The step of arranging the plurality of first rod-shaped members includes
Preparing a supply device in which the first rod-like members are arranged in parallel;
The method for manufacturing a stack according to claim 10, further comprising: arranging the first bar-like member on the surface of the first substrate from the supply device after disposing the supply device above the first substrate. . A method of removing a substrate from a stack of stacked substrates,
Preparing a stacked body in which substrates and rod-like members are alternately stacked;
Removing the first substrate located in the uppermost layer in the stack;
Removing the rod-shaped member disposed on the second substrate by inclining the second substrate located under the first substrate. And removing the second substrate;
The method according to claim 13, further comprising: removing a rod-shaped member disposed on the third substrate by inclining a third substrate located under the second substrate. 14. The method for removing a substrate according to claim 13, wherein, in the step of removing the rod-shaped member, the rod-shaped member that moves by tilting the second substrate is collected in a receiving container.

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