JP5506511B2 - Film laminating device - Google Patents

Description

  The present invention relates to a film laminating apparatus for laminating a film and a glass substrate in a vacuum state, and particularly to a film laminating apparatus in which a driving source for moving a laminating table is shared with a vacuum source and the apparatus is downsized. .

  In a liquid crystal display or a plasma display, a high-functional film such as a polarizing film or an electromagnetic field shielding film is bonded to a glass substrate.

  As a film laminating apparatus, a polarizing plate and a glass substrate are fixed to the inner surface of a vacuum container by a suction force so as to face each other in parallel, and a laminating table (referred to as a backup plate in Patent Document 1) to which the glass substrate is fixed is parallel. There has been proposed one that keeps the posture and moves it against the polarizing plate so that bubbles do not enter the bonded surface (see, for example, Patent Document 1). In this film laminating apparatus, the thickness of the vacuum container is reduced by laminating by a vertical movement of the laminating table.

  As another film laminating apparatus, an apparatus in which a laminating table is pressed against a metal thin film (referred to as a laminating diaphragm in Patent Document 2) so that air bubbles do not enter the laminating surface has been proposed (for example, , See Patent Document 2). In this film laminating apparatus, the laminating table is pressed against a metal thin film that has been expanded and deformed in a salient arc shape, and the air remaining on the laminating surface is forced by laminating from the central part of the work toward the peripheral part. Removed.

JP 2003-121111 (paragraphs 0014, 0047, FIG. 3) Japanese Patent Laying-Open No. 2009-294551 (paragraphs 0010 and 0016, FIG. 1)

  In recent years, in order to make it easy to assemble a film laminating apparatus to other apparatuses, a film laminating apparatus that is smaller than the conventional one has been desired.

  However, in the film bonding apparatus according to Patent Document 1, since the bonding table is moved up and down by the actuator, an actuator is required separately from the vacuum container and the vacuum pump. Therefore, although the film bonding apparatus according to Patent Document 1 can reduce the capacity of the vacuum vessel, it is still large when an actuator is included.

  Even in the film laminating apparatus according to Patent Document 2, since the laminating table is moved up and down by the air cylinder, an air cylinder is required separately from the vacuum container and the vacuum pump, and the film laminating apparatus is large.

  In particular, in the film bonding apparatus according to Patent Document 2, since the metal thin film is provided in the vacuum container, the capacity of the vacuum container is increased. Therefore, in the film bonding apparatus according to Patent Document 2, it takes time for vacuuming as the capacity of the vacuum container increases, and the time required for bonding also increases.

  Therefore, an object of the present invention is to solve the above-described problems and provide a film laminating apparatus in which the apparatus is miniaturized.

  In order to solve the above-mentioned problems, in the invention according to claim 1, the film laminating apparatus is composed of a lid (lid) body, a frame body, and a main body, and a film body is connected to each facing surface of the lid body and the main body through a vacuum source. In addition, an adsorption member for sucking and fixing the plate body is provided, and an elastic body is provided in a gap (gap) between the frame body and the main body. Then, the lid body and the frame body move toward the main body as the inside of the film laminating apparatus (hereinafter also referred to as the apparatus) is depressurized, and the film body or plate body is moved by the operation of bringing the opposing surfaces into contact with each other. I made it stick together.

  In the invention according to claim 2, an exhaust passage for exhausting the inside of the apparatus from a portion other than the adsorbing member is provided.

  In the invention according to claim 3, the adsorption member of the main body is held so as to fall down toward the adsorption member of the lid, and an elastic body is provided in the gap between the back surface of the adsorption member of the main body and the main body.

  According to the first aspect of the present invention, since the suction member for sucking and fixing the membrane body and the plate body through the vacuum source is provided on each facing surface of the lid and the main body, The film body or plate can be easily positioned by simply placing the film body or plate at the position. According to the first aspect of the present invention, since the film body and the plate body are bonded together while being sucked, the film body and the plate body are not displaced in the process of bonding.

  According to the invention of claim 1, since the elastic body is provided in the gap between the frame body and the main body, when the inside of the apparatus is exhausted, the lid body and the main body are attracted, and the elastic body is crushed and the frame is crushed. The gap between the body and the body is narrowed. Then, when the elastic body is crushed, the lid body and the frame body move so as to be drawn toward the main body, and the operation is performed such that the opposing surfaces of the lid body and the main body are brought into contact with each other. As a result, the film body and the plate body fixed to the adsorption member are brought into contact with each other, and the film body and the plate body can be bonded together.

  As described above, as a matter of course, according to the invention of claim 1, since the film body and the plate body are bonded together in a vacuum state, bubbles and dust do not enter the bonded surface.

  According to the first aspect of the invention, the lid corresponding to the bonding table can be moved toward the main body by evacuating the inside of the apparatus, so that a driving source for moving the bonding table becomes unnecessary. . That is, according to the invention according to claim 1, since the driving source for moving the bonding table can be shared with the vacuum source, the conventional film bonding which requires an actuator and an air cylinder separately from the vacuum vessel and the vacuum pump. The device can be made smaller than the device.

  In addition, according to the first aspect of the present invention, the lid and the frame move toward the main body as the inside of the apparatus is depressurized, and the volume in the apparatus becomes small. The time required for the alignment can be shortened.

  According to the second aspect of the present invention, the exhaust passage for exhausting the interior of the apparatus from a portion other than the adsorbing member is provided. Can be shortened.

  According to the invention of claim 3, the main body adsorption member is held so as to be able to fall down toward the cover adsorption member, and the elastic body is provided in the gap between the back surface of the main body adsorption member and the main body. Then, the main body adsorption member can be brought into contact with the lid adsorption member from one side provided with the elastic body, and the air can be bonded together while pushing out the air on the bonding surface from the first one. Therefore, according to the invention according to claim 3, it is possible to more reliably prevent bubbles from remaining on the bonding surface as compared with the invention according to claim 1 in which the film body and the plate body are applied in parallel. In particular, according to the third aspect of the present invention, when a plurality of bonding processes are performed simultaneously, it is possible to more reliably prevent bubbles from remaining on the bonding surfaces.

It is a disassembled perspective view of the film bonding apparatus which concerns on embodiment. It is the disassembled perspective view seen from the downward direction of the film bonding apparatus which concerns on embodiment. It is a perspective view of the film bonding apparatus which concerns on embodiment. (A) is a figure which shows the state before bonding among sectional drawings of the film bonding apparatus which concerns on embodiment, (b) is the time of bonding among sectional drawings of the film bonding apparatus which concerns on embodiment. It is a figure which shows the state of. It is sectional drawing of the film bonding apparatus which concerns on other embodiment.

  First, a basic matter of creation of the present invention will be briefly described. The inventor has focused on downsizing the apparatus, focusing on the desire for a smaller film laminating apparatus than the prior art in order to facilitate the assembly of the film laminating apparatus to other apparatuses. The inventor considered that there is a limit to downsizing the apparatus because a driving source for moving the bonding table is indispensable in the structure in which the bonding table is separately provided in the vacuum vessel as in the conventional device.

  Then, the inventor generally forms a vacuum vessel, particularly a container main body in consideration of airtightness, and divides the container main body into a frame body and a main body, and is configured so that the frame body and the main body slide. As the inside of the vacuum vessel is depressurized, it has been found that the opposing surfaces of the vacuum vessel can be moved to contact each other, and the present invention has been created.

  Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. FIG. 1 is an exploded perspective view of the film bonding apparatus according to the embodiment, and FIG. 2 is an exploded perspective view of the film bonding apparatus according to the embodiment as viewed from below.

  As shown in FIG. 1, the film laminating apparatus 1 includes a lid body 2, a frame body 3, and a main body 4. The film laminating apparatus 1 is configured to apply a negative pressure by a vacuum source (not shown) to suck and fix the film body F and the plate body P to the opposing surfaces of the lid body 2 and the main body 4. And in this film bonding apparatus 1, the cover body 2 and the frame 3 move toward the main body 4 as the inside of the film bonding apparatus 1 is depressurized, and the facing surfaces of the lid body 2 and the main body 4 are brought into contact with each other. By such an operation, the film body F and the plate body P are configured to be bonded together.

  The lid body 2 is a quadrangular plate body, and as shown in FIG. 2, a convex portion is formed on the back surface thereof, in other words, at the center of the surface facing the main body 4. An adsorbing member 2a that leads to a vacuum source (not shown) is attached to the convex portion. The adsorbing member 2a is a quadrangular pad made of a porous material such as carbon or ceramic, or a metal material provided with a plurality of holes, and is made of carbon here. The lid 2 is provided with an exhaust path (not shown) for exhausting the inside of the film laminating apparatus 1 from the adsorbing member 2a, and a vacuum joint 2b is attached to an end of the exhaust path.

  As shown in FIG. 1, the frame 3 has a groove 3 a that extends around the edge of the surface, in other words, the edge of the surface facing the lid 2. A packing 5 is fitted into the groove 3 a, and the lid 2 and the frame 3 are sealed by the packing 5. Further, as shown in FIG. 2, the frame 3 has a plurality of holes 3b at predetermined intervals extending around the edge of the back surface, in other words, the edge of the surface facing the main body 4. Yes. An elastic body, here, a spring 6 is fitted into the hole 3 b, and the frame body 3 and the main body 4 are assembled in a state where elasticity is applied by the plurality of springs 6. The frame body 3 is provided with an exhaust path (not shown) for exhausting the film laminating apparatus 1 from the inner peripheral surface of the frame body 3, and a vacuum joint 3 c is attached to an end path of the exhaust path. Yes.

  The main body 4 is a quadrangular plate body, and as shown in FIG. 1, a convex portion is formed on the surface thereof, in other words, the center of the surface facing the lid body 2. An adsorbing member 4a leading to a vacuum source (not shown) is attached to the convex portion. The adsorbing member 4a is a quadrangular pad made of a porous material such as carbon or ceramic, or a metal material provided with a plurality of holes, and is made of carbon here. In the main body 4, a groove 4b is formed on the side surface of the convex portion over the entire circumference. A packing 7 is fitted in the groove 4 b, and the frame 3 and the main body 4 are sealed by the packing 7. The main body 4 is formed with a plurality of holes 4c at predetermined intervals extending around the edge of the surface, in other words, the edge of the surface facing the frame 3. An elastic body, here, a spring 6 is fitted into the hole 4c, and the frame body 3 and the main body 4 are assembled in a state where elasticity is applied by the plurality of springs 6. Further, the main body 4 is provided with an exhaust path (not shown) for exhausting the inside of the film laminating apparatus 1 from the adsorbing member 4a, and a vacuum joint 4d is attached to an end path of the exhaust path.

  FIG. 3 is a perspective view of the film bonding apparatus 1 according to the embodiment. As shown in FIG. 3, the film bonding apparatus 1 is configured by assembling a lid body 2, a frame body 3, and a main body 4. In this film laminating apparatus 1, the lid 2 and the frame 3 are sealed by the packing 5 (see FIG. 1), and the frame 3 and the main body 4 are sealed by the packing 7 (see FIG. 1). The inside of the film bonding apparatus 1 is sealed. The film laminating apparatus 1 is fitted with the frame 3 and the main body 4 so that the inner peripheral surface of the frame 3 and the convex outer peripheral surface of the main body 4 slide in more detail. 3 and the main body 4 are assembled in a state where elasticity is applied by a spring 6.

  In the film laminating apparatus 1 configured as described above, when a vacuum source (not shown) is operated to reduce the pressure in the film laminating apparatus 1, a force attracting the lid 2 and the main body 4 is generated. Then, in the film laminating apparatus 1, the spring 6 is crushed when the lid 2 and the main body 4 are attracted, and the lid 2 and the frame 3 are moved toward the main body 4 so that the adsorbing members 2a and 4a are brought into contact with each other. Move.

  FIG. 4 is a cross-sectional view of the film bonding apparatus 1 according to the embodiment. 4A shows a state before bonding, and FIG. 4B shows a state at the time of bonding.

  As shown in FIG. 4A, in a state before bonding, a vacuum source (not shown) is operated to suck and fix the film body F to the suction member 2a and the plate body P to the suction member 4a. . In order to determine the positions of the film body F and the plate body P on the adsorption members 2a and 4a, for example, if positioning pins are provided at the respective positions, the film body F and the plate body P can be easily positioned. Further, if the lid 2 and the frame 3 are connected by a hinge, the lid 2 can be opened 180 degrees and the film body F can be placed on the adsorption member 2a in the upward state.

  As shown in FIG. 4B, in the state at the time of bonding, the inside of the film bonding apparatus 1 is exhausted from the adsorbing members 2a and 4a and other portions, here the inner peripheral surface of the frame 3. As the inside of the film laminating apparatus 1 is depressurized, the lid 2 and the main body 4 are attracted and the spring 6 is crushed. Then, the adsorbing members 2a and 4a move so as to contact each other, and the film body F and the plate body P are bonded together. After pasting, the vacuum source is stopped, air is introduced into the film laminating apparatus 1 to return to normal pressure, the lid 2 is opened, and the plate body P on which the film body F is pasted is taken out. Here, the inside of the film laminating apparatus 1 is exhausted from the inner peripheral surfaces of the adsorbing members 2a and 4a and the frame 3, but the inside of the film laminating apparatus 1 is exhausted only from the adsorbing members 2a and 4a. However, similarly, the adsorption members 2a and 4a move so as to contact each other, and the film body F and the plate body P are bonded together.

  In the film laminating apparatus 1 according to the embodiment, the film body F or the plate body P is sucked until the film body F or the plate body P is bonded after being positioned. The plate body P is not displaced. Further, when the film bonding apparatus 1 is evacuated, the lid 2 corresponding to the bonding table moves toward the main body 4, so that the driving source for moving the bonding table can be shared with the vacuum source, and the film bonding The volume in the film bonding apparatus 1 can be reduced as the pressure in the bonding apparatus 1 is reduced.

  Moreover, in the film bonding apparatus 1 which concerns on embodiment, since the inside of the film bonding apparatus 1 is exhausted also from site | parts other than adsorption member 2a, 4a, and the internal peripheral surface of the frame 3 here, adsorption member 2a. , 4a can be evacuated more quickly than when the inside of the film laminating apparatus 1 is exhausted.

  Next, another embodiment of the present invention will be described focusing on the differences. FIG. 5 is a cross-sectional view of a film bonding apparatus according to another embodiment. As shown in FIG. 5, in the film laminating apparatus 1 ′ according to another embodiment, the adsorption member 4 a ′ is held so as to be able to rise and fall toward the adsorption member 2 a, and the back surface of the adsorption member 4 a ′ and the main body 4 ′ A spring 8 is provided on one of the gaps, more specifically, the gap between the back surface of the adsorbing member 4a ′ and the main body 4 ′, which is not held so as to fall down.

  In the film laminating apparatus 1 ′ according to another embodiment configured as described above, the suction member 4 a ′ is brought into contact with the suction member 2 a from one side provided with the spring 8.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. For example, the elastic body according to the present invention is not limited to the springs 6 and 8, and may be rubber or cylinder. The springs 6 and 8 are not limited to coil springs, and may be leaf springs.

  The lid 2, the frame 3, and the main body 4 according to the present invention are not limited to a quadrangle, and may be appropriately changed according to the shape of the film body F or the plate body P.

  The portions other than the adsorbing members 2a and 4a according to the present invention are not limited to the inner peripheral surface of the frame 3, and the edge of the convex portion to which the adsorbing members 2a and 4a of the lid 2 and the main body 4 are not attached. It doesn't matter.

  Moreover, in the said embodiment, although the cover body 2 and the frame 3 are assembled | attached in the state sealed by the packing 5, even if it assembled | attached by welding etc. without the packing 5, the cover 2 and the frame 3 May be molded integrally.

  In the present invention, the film bonding is not limited to bonding the film body F and the plate body P, but also includes the case where the film bodies F or the plate bodies P are bonded together.

  In the present invention, the operation of bringing the opposing surfaces into contact with each other means a movement in which the interval between the adsorbing members 2a and 4a is narrowed.

DESCRIPTION OF SYMBOLS 1 Film bonding apparatus 2 Lid 2a Adsorption member 3 Frame 4 Main body 4a Adsorption member 5 Packing 6 Spring (elastic body)
7 Packing F Film body P Plate body

Claims (3)

A film laminating apparatus comprising a lid, a frame and a main body,
An adsorbing member for sucking and fixing a membrane body or a plate body through a vacuum source on each facing surface of the lid body and the main body;
A packing for sealing each other between the lid, the frame and the main body;
An elastic body is provided in the gap between the frame body and the main body,
The film characterized in that the lid and the frame are moved toward the main body as the inside of the film laminating apparatus is depressurized, and the film body or the plate body is bonded together by an operation of bringing the opposing surfaces into contact with each other. Bonding device.   The film bonding apparatus according to claim 1, wherein the film bonding apparatus includes an exhaust path that exhausts the film bonding apparatus from a portion other than the adsorption member.   2. The suction member of the main body is held so as to fall down toward the suction member of the lid, and an elastic body is provided in a gap between the back surface of the suction member of the main body and the main body. Or the film bonding apparatus of Claim 2.

Images