JP3863245B2 - Method and apparatus for assembling flat panel display - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method and an apparatus for assembling a flat panel display such as a liquid crystal display device.
[0002]
[Prior art]
In general, a liquid crystal display device is configured by bonding two glass substrates through a spacer and enclosing liquid crystal molecules between these glass substrates. Usually, a liquid crystal display device is assembled by the following processes.
[0003]
That is, first, glass substrates are sucked and held on a pair of upper and lower stages facing each other. In this case, a large number of electrodes are formed on the surface of the glass substrate held on the lower stage, and a gap between the two glass substrates and a rectangular frame-shaped sealing material that defines the display area is formed. A spacer for holding is disposed. Further, a counter electrode, a color filter, and the like are provided on the glass substrate held on the upper stage.
[0004]
In this state, after lowering the upper stage so that the two glass substrates are opposed to each other with a predetermined gap, the upper stage is moved in the X and Y directions and rotated around the Z axis. The glass substrates are aligned based on a predetermined alignment mark or the like.
[0005]
Subsequently, the upper stage is lowered to a position where the upper glass substrate contacts the sealing material and the spacer on the lower glass substrate. In this case, it is caused by resistance when two glass substrates are brought into contact with each other through a spacer or a seal material, rigidity and parallelism of vertical driving of the upper and lower stages, and backlash in the X, Y, and θ driving mechanisms. As a result, a slight misalignment occurs between the glass substrates.
[0006]
Therefore, in a state where the two glass substrates are in contact with each other via the sealant and the spacer, the upper stage is moved again in the X, Y, and θ directions to perform alignment. After the alignment is completed, pressure is applied so that the gap between the two glass substrates becomes a predetermined value, and liquid crystal molecules are sealed between these glass substrates.
[0007]
[Problems to be solved by the invention]
However, when positioning is performed by moving one glass substrate in a state where the two glass substrates are in contact with each other via the spacer as described above, the spacer rubs the surface of the glass substrate strongly and scratches it. At the same time, there is a possibility that the color filter layer on the surface of the glass substrate may be sunk.
[0008]
In addition, even when the stage interval is widened so that the two glass substrates do not come into contact with each other through the spacer, the flatness of the stage and the substrate is limited, and dust or the like is sandwiched between the stage and the substrate. A part of the two substrates comes into contact with each other, resulting in the same problem.
[0009]
The above-described problem is particularly likely to occur when a columnar spacer fixedly formed at a predetermined position on one substrate by a lithography process is used as the spacer.
In recent liquid crystal display devices, since there is a strong demand for improvement in image quality, even slight scratches that occur during the manufacturing process are raised as image quality defects, and this causes a reduction in manufacturing yield.
[0010]
The present invention has been made in view of the above points, and its purpose is as follows. substrate Improved image quality without scratching Flat panel display A flat panel display assembling method and an assembling apparatus capable of assembling a flat panel display.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, a flat panel display assembling method according to claim 1 of the present invention includes a sealing material provided so as to surround the display area and a plurality of spacers provided in the display area. 1 transparent substrate and 2nd transparent substrate are arranged oppositely,
In a state where the display area of at least one of the first and second transparent substrates is bent in a direction away from the display area of the other transparent substrate, the peripheral portions of the first and second transparent substrates Are bonded together through the sealing material,
Move and align at least one of the bonded first and second transparent substrates,
After the alignment is completed, the display regions of the first and second transparent substrates are brought into contact with each other through the spacer, except for the bending of the transparent substrate.
[0012]
According to a second aspect of the present invention, there is provided a flat panel display assembly method comprising: a first transparent substrate provided with a sealing material so as to surround a display area; and a plurality of spacers provided in the display area. The second transparent substrate is disposed oppositely,
In a state where the display areas of the first and second transparent substrates are bent in directions away from each other, the peripheral portions of the first and second transparent substrates are bonded together via the sealing material,
Move and align at least one of the bonded first and second transparent substrates,
After the alignment is completed, the display areas of the first and second transparent substrates are brought into contact with each other through the spacer except for the bending of the first and second transparent substrates.
[0013]
According to the assembling method of the above configuration, the peripheral edge of the transparent substrate is bonded by bonding the two transparent substrates in a state where the display area of one transparent substrate or both transparent substrates is bent in a direction away from the other transparent substrate. Only the portions are bonded together via a sealing material, and the display areas are held apart from each other. In this state, the transparent substrates are aligned to prevent the spacer from scratching the substrate surface. Then, after the alignment is completed, the transparent substrate is removed from bending, and the transparent substrates are brought into contact with each other through a spacer and are opposed to each other with a predetermined gap.
[0014]
A method for assembling a flat panel display according to a third aspect of the present invention is as follows.
A sealing material is provided so as to surround the display area, and a first transparent substrate having a plurality of spacers provided in the display area and a second transparent substrate are arranged to face each other, and the first and second With the display area of at least one of the transparent substrates bent in a direction away from the display area of the other transparent substrate, the first and second transparent substrates are brought close to each other and the first and second transparent substrates are brought close to each other. Move and align at least one of the transparent substrates,
The peripheral portions of the aligned first and second transparent substrates are bonded together via the sealing material,
After the alignment is completed, the display regions of the first and second transparent substrates are brought into contact with each other through the spacer, except for the bending of the transparent substrate.
[0015]
The assembly method of the flat panel display of this invention which concerns on Claim 4 is
A sealing material is provided so as to surround the display area, and a first transparent substrate having a plurality of spacers provided in the display area and a second transparent substrate are arranged to face each other, and the first and second In a state where the display area of the transparent substrate is bent in a direction away from each other, the first and second transparent substrates are brought close to each other and at least one of the first and second transparent substrates is moved for alignment. Done
The peripheral portions of the aligned first and second transparent substrates are bonded together via the sealing material,
After the alignment is completed, the display areas of the first and second transparent substrates are brought into contact with each other through the spacer except for the bending of the first and second transparent substrates.
[0016]
According to the assembling method of the above configuration, at least after the two transparent substrates are brought close to each other in a state where the display area of one transparent substrate or both transparent substrates is bent in a direction away from the other transparent substrate. One transparent substrate is moved to align the substrates. At the time of alignment, since the display areas of the two transparent substrates are held apart from each other, the substrate surface is prevented from being damaged by the spacer. Then, after the alignment is completed, the transparent substrates are bonded to each other via a sealing material, and further, the transparent substrates are brought into contact with each other with a predetermined gap therebetween by removing the deflection of the transparent substrates.
[0017]
According to a sixth aspect of the present invention, there is provided an assembling apparatus having an upper stage and a lower stage each having a substrate holding surface for holding a transparent substrate constituting a flat panel display, wherein the substrate holding surfaces are arranged to face each other. A position adjusting mechanism that adjusts the position of at least one of the upper stage and the lower stage with respect to the other stage, and a suction unit that sucks the transparent substrate onto the substrate holding surface of the upper stage and the lower stage. I have.
[0018]
At least one of the upper stage and the lower stage has a recess formed on the substrate holding surface and facing the display area of the transparent substrate, and the suction means exhausts the inside of the recess to A suction means for deflecting the display area of the transparent substrate into the recess is provided.
[0019]
Claims 7 With the assembling apparatus according to the above, both the upper stage and the lower stage include the recess formed in the substrate holding surface.
According to the assembling apparatus having the above configuration, by sucking the transparent substrate onto the substrate holding surface having the recess, the display area can be sucked and held in a state where the display area is bent away from the other transparent substrate.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an assembling apparatus 10 according to an embodiment of the present invention for assembling a liquid crystal display device as a flat panel display. The assembling apparatus 10 includes a bonding mechanism unit 12 that bonds two glass substrates of a liquid crystal display device, which will be described later, and a supply mechanism unit 14 that supplies the glass substrate to the bonding mechanism unit 12. The alignment mechanism section and the supply mechanism section are installed on the main body frame 16.
[0021]
The bonding mechanism unit 12 includes an upper stage 18 and a lower stage 20 that are arranged to face each other. These stages 18 and 20 are formed in a rectangular plate shape and are arranged almost horizontally. The lower stage 20 is fixedly disposed on the main body frame 16.
[0022]
The upper stage 18 is attached to an XY-θ stage 22 that functions as a position adjustment mechanism. The XY-θ stage 22 is movable in the X direction and the Y direction in a horizontal plane, and is rotatable about a vertical axis. The XY-θ stage 22 is supported and guided by a guide 25 provided on the main body frame 16 so as to be movable up and down along the vertical direction, and is driven up and down by a drive mechanism 24 provided on the upper portion of the main body frame 16. Is done.
[0023]
The upper stage 18 can be adjusted in position with respect to the lower stage 20 by operating the XY-θ stage 22, and is moved up and down by the drive mechanism 24. , Moved in the direction of contact with and away from the lower stage.
[0024]
As shown in FIG. 2A, the lower surface of the upper stage 18 constitutes a substrate holding surface 18a, and a rectangular recess 26 is formed at the center of the substrate holding surface. The recess 26 is formed in a shape and size substantially corresponding to an effective area of a glass substrate to be described later, and has a depth of 50 μm or more. Further, an exhaust port 28 is opened at the center of the bottom surface of the recess 26. The exhaust port 28 is connected to the first vacuum pump 32 via the suction tube 30.
[0025]
In addition, a large number of suction holes 34 are formed in the upper stage 18, and these suction holes open to the substrate holding surface 18 a and are provided side by side along the peripheral edge of the recess 26. These suction holes 34 are connected to a second vacuum pump 36 via a suction tube 35.
[0026]
As shown in FIG. 2B, the upper surface of the lower stage 20 constitutes a substrate holding surface 20a, and a rectangular recess 38 is formed at the center of the substrate holding surface. The recess 38 is formed in a shape and size substantially corresponding to an effective area of a glass substrate described later. In addition, a large number of suction holes 40 are formed in the lower stage 20, and these suction holes open to the substrate holding surface 20 a and are provided along the peripheral edge of the recess 38. These suction holes 40 are connected to a third vacuum pump 43 through a suction tube 42.
[0027]
As shown in FIG. 1, the first to third vacuum pumps 32, 36, and 42 are disposed on the main body frame 16 below the lower stage 20, and constitute suction means and suction means in the present invention. Yes.
[0028]
As shown in FIG. 1, the supply mechanism unit 14 that supplies the glass substrate to the upper stage 18 and the lower stage 20 of the bonding mechanism unit 12 includes an XY table 44 provided substantially horizontally on the main body frame 16, And a support post 46 erected vertically on an XY table, and a movable table 48 that can be moved up and down along the vertical direction is attached to the support post. Further, the movable base 48 is provided with a support arm 50 that is extendable and rotatable in the horizontal direction, and a holding portion 52 that holds the glass substrate by suction is provided at the extended end of the support arm.
[0029]
Then, the supply mechanism unit 14 moves the moving table 48 up and down and expands and contracts and rotates the support arm 50 in a state where the glass substrate is sucked and held by the holding unit 52, thereby moving the glass substrate to the upper stage 18 and the lower stage 20. To supply each.
[0030]
On the other hand, the liquid crystal display device assembled using the assembly apparatus configured as described above includes an array substrate 60 and a counter substrate 62 each functioning as a rectangular transparent substrate, as shown in FIG. The array substrate 60 has a rectangular display region 60a configured by forming signal lines 61, scanning lines 63, pixel electrodes 65, and the like on the surface of the glass substrate. A sealing material 64 is applied on the array substrate 60 so as to surround the display region 60a, and a large number of spherical spacers 66 are dispersed on the surface region 60a. The height of the sealing material 64 is set to, for example, 15 μm, and the spacer diameter is set to about 5 μm.
[0031]
The counter substrate 62 is made of a glass substrate, and a rectangular display region 62a formed with a counter electrode 68, a color filter 70, and the like is provided on the lower surface thereof. The display area 62a has a size corresponding to the display area 60a on the array substrate 60 side.
[0032]
The liquid crystal display device is configured by adhering the array substrate 60 and the counter substrate 62 through a sealing material 64 and enclosing liquid crystal molecules between these substrates.
[0033]
Next, a method for assembling a liquid crystal display device using the assembly apparatus configured as described above will be described. As shown in FIG. 4A, first, a pre-formed array substrate 60 is supplied to the lower stage 20 of the bonding mechanism section 12 by the supply mechanism 14, and placed on the lower stage with the display area 60a facing up. To do. At this time, the array substrate 60 is placed so that the display region 60a faces the recess 38 of the lower stage 20 and the peripheral edge of the array substrate is in contact with the substrate holding surface 20a. In this state, the third vacuum pump 43 is operated, and the peripheral portion of the array substrate 60 is sucked and held on the substrate holding surface 20 a of the lower stage 20 by the suction holes 40.
[0034]
Subsequently, the counter substrate 62 is supplied to the upper stage 18 by the same process as described above, and is held by suction on the substrate holding surface 18a of the upper stage with the effective area 62a facing downward. In this case, the second vacuum pump 36 is operated in a state where the display area 62a of the counter substrate 62 is opposed to the recess 26 of the upper stage 18 and the peripheral portion of the counter substrate is in contact with the substrate holding surface 18a, The peripheral edge portion of the counter substrate is sucked and held on the substrate holding surface 18 a by the suction holes 34. Thereby, the array substrate 60 and the counter substrate 62 are arranged in a state where the display areas 60a and 62a face each other.
[0035]
Subsequently, as shown in FIG. 4B, the upper stage 18 is lowered together with the XY-θ stage 22 by the drive mechanism 24, and the counter substrate 62 is moved in a direction approaching the array substrate 60. Meanwhile, the first vacuum pump 32 is operated, and the inside of the recess 26 of the upper stage 18 is exhausted to a predetermined pressure through the exhaust port 28. Then, the display area 62 a of the counter substrate 62 is attracted to the bottom surface side of the recess 26 and slightly bends in a direction away from the array substrate 60. The amount of deflection of the counter substrate 60 is adjusted to a predetermined value, for example, about 50 μm, by controlling the exhaust pressure.
[0036]
Then, as shown in FIG. 4C, the upper stage 18 is further lowered to a position where the peripheral portion of the counter substrate 62 contacts the sealing material 64 on the array substrate 60 with the counter substrate 62 being bent by a predetermined amount. Let At this time, since the display area 62a of the counter substrate 62 is bent in a direction away from the display area 60a of the array substrate 60, the display area 62a is held without contacting the spacer 66 on the array substrate.
[0037]
In this state, the XY-θ stage 22 is operated to move the upper table 18 and the counter substrate 18 in the X, Y, and θ directions, and the counter substrate 62 is aligned with a predetermined position with respect to the array substrate 60. .
[0038]
After completion of the alignment, as shown in FIG. 4D, the first vacuum pump 32 is stopped and the inside of the recess 26 of the upper stage 18 is returned to the atmospheric pressure. As a result, the counter substrate 62 is returned to its original state, that is, a flat state after the bending is removed. As a result, the display area 62a of the counter substrate 62 contacts the spacer 66 on the array substrate 60, and the counter substrate and the array substrate 60 are pasted with a predetermined gap, for example, 5 μm.
[0039]
At this time, pressurized air may be supplied into the recess 26 from the exhaust port 28 of the upper stage 18 to correct the gap between the array substrate 60 and the counter substrate 62.
[0040]
After completion of alignment or at the time of completion of bonding, the substrates are temporarily fixed with a temporary fixing agent such as a UV curing agent while the array substrate 60 and the counter substrate 62 are pressed, and the temporary fixing agent is cured. Let
[0041]
Thereafter, the second and third vacuum pumps 36 and 43 are stopped to release the adsorption of the array substrate 60 and the counter substrate 62, and the upper stage 18 is raised together with the XY-θ stage 22. Subsequently, the bonded array substrate 60 and counter substrate 62 are taken out from the lower stage by a transport mechanism (not shown), and then transported in a process of curing the sealing material.
[0042]
According to the assembling method and the assembling apparatus of the liquid crystal display device configured as described above, the display area 60a of the counter substrate 60 is bent in a direction away from the array substrate 62, and only the peripheral portion of the counter substrate has the sealing material 64. Therefore, the alignment can be performed in a state in which the display area of the counter substrate is not in contact with the spacer 66. Further, since the recess 38 is also provided in the substrate holding surface 20a of the lower stage 20, it is possible to prevent the effective area 60a of the array substrate 60 from being bent toward the counter substrate 62 due to dust or the like adhering to the substrate holding surface. At the same time, the effective area 60a of the array substrate 60 is slightly bent toward the recess 38 due to its own weight and separated from the counter substrate 62.
[0043]
Therefore, during the alignment, the display area 60a, 62a of the array substrate 60 and the counter substrate 62 can be prevented from being scratched by the spacer 66. As a result, the occurrence of orientation failure and image failure due to the scratch can be prevented. A liquid crystal display device with improved image quality can be provided. Further, by performing alignment in a state where the array substrate 60 and the counter substrate 62 are not in contact with each other via the spacer 66, highly accurate alignment is possible, and image quality can be further improved.
[0044]
In addition, since the alignment of the glass substrates is performed in a state in which the counter substrate 60 is bent, it is also possible that when the counter substrate is removed after the alignment is completed, the position of the counter substrate may be displaced. When the amount of bending is about 50 μm, the positional deviation amount is about 0.02 to 0.05 μm even in a normal 300 × 300 mm glass substrate, and there is no practical problem.
[0045]
FIG. 5 schematically shows an assembling apparatus and assembling method according to the second embodiment of the present invention. According to the second embodiment, the exhaust port 70 is also provided in the recess 38 of the lower stage 20, and a fourth vacuum pump (not shown) is connected to the exhaust port. In this case, the recess 38 is formed to a depth of 50 μm or more.
[0046]
As in the above-described embodiment, after the opposing substrate 62 and the array substrate 60 are sucked and held on the upper stage 18 and the lower stage 20, respectively, the first and fourth vacuum pumps are operated to activate the effective area of the opposing substrate. 62a and the effective area 60a of the array substrate are bent in directions away from each other. At this time, the amount of deflection is the same value for both substrates.
[0047]
In this state, the peripheral portions of the counter substrate 62 and the array substrate 60 are bonded together via the sealing material 64, and then the substrates are aligned by the XY-θ stage 22. Thereafter, the first and fourth vacuum pumps are stopped and the recesses 26 and 38 are returned to the atmospheric pressure to remove the deflection of the counter substrate 62 and the array substrate 60. Thus, the counter substrate 62 and the array substrate 60 are in contact with each other via the spacer 66 and are bonded together with a predetermined gap.
[0048]
Other configurations are the same as those of the above-described embodiment, and the same reference numerals are given to the same portions, and detailed description thereof is omitted.
Even in the second embodiment configured as described above, the same effect as that of the above-described embodiment can be obtained, and the two glass substrates are aligned in a state where they are bent by the same amount. Since the configuration is such that the deflection is removed, the misalignment due to the deflection can be made substantially zero.
[0049]
6 to 9 show modified examples of the upper stage 18 and the lower stage 20.
According to the first modification shown in FIG. 6, a plurality of elongated ribs 72 extending in parallel to each other are formed on the bottom surfaces of the recesses 26 and 38 of the upper and lower stages. The height of each rib 72 is set to 50 μm, for example.
[0050]
In the first modification, by evacuating the recesses 26 and 38 with a predetermined pressure, the counter substrate 62 and the array substrate 60 are bent to the bottom side of the recess and are held in contact with the upper surfaces of the ribs 72. The In the case of such a configuration, by adjusting the height of the rib 72, the amount of bending of the glass substrate can be made constant at all times, and the exhaust pressure can be easily controlled.
[0051]
According to the second modification shown in FIG. 7, the bottom surfaces of the recesses 26 and 38 of each stage are formed in a gentle spherical shape that is continuous with the substrate holding surface of the stage. According to such a configuration, when the glass substrate is bent, it is possible to prevent the bending of the glass substrate from being concentrated on the boundary portion between the substrate holding surface and the recess of the stage. Thereby, adsorption | suction holding | maintenance of a glass substrate peripheral part can remove | deviate, and it can prevent that a peripheral part jumps up from a board | substrate holding surface.
[0052]
Since it is very difficult to process a recess having a spherical bottom surface as described above, a plurality of elongated ribs extending parallel to each other on the bottom surface of the recess as in the third modification shown in FIG. 72, and the height of these ribs is the lowest at the rib located at the center of the recess and higher as it goes to the periphery of the recess, thereby forming a pseudo curved surface shape. Also good.
[0053]
Further, as in the fourth modification shown in FIG. 9, a plurality of independent prismatic protrusions 74 are formed on the bottom surface of the recess in place of the rib, and the protrusion located at the center of the recess is the lowest. Alternatively, a pseudo curved surface shape may be formed by forming it higher toward the peripheral edge of the recess.
[0054]
Even when the stages according to the first to fourth modifications configured as described above are used, the same operational effects as those of the above-described embodiment can be obtained. In addition, when the stage according to these modified examples is used, the glass substrate is held in contact with the rib 72, the bottom surface of the recess, and the protrusion in a state where the glass substrate is bent. It is possible to omit the exhaust system for adsorbing the part on the substrate holding surface of the stage, and to adsorb and hold the glass substrate only by the exhaust system for bending the glass substrate.
[0055]
The present invention is not limited to the above-described embodiments and modifications, and various modifications can be made within the scope of the present invention. For example, the shape and dimensions of the recesses formed in the upper stage and the lower stage, the dimensions of the glass substrate, and the like can be variously modified as necessary. The present invention is not limited to a liquid crystal display device having a spherical spacer, but can also be applied to an assembly of a liquid crystal display device having columnar spacers erected on an effective area by a lithography process.
[0056]
In the above-described embodiment, at least one of the array substrate and the counter substrate is bonded with a sealant in a bent state, and then one substrate is moved to perform alignment. Not limited to this, the following assembly method may be used. That is, the substrates are brought close to each other in a state where at least one of the array substrate and the counter substrate is bent, and the substrates are aligned by moving at least one substrate in the close state. Then, after the alignment is completed, the array substrate and the counter substrate are bonded to each other through a sealant, and then the display areas of the array substrate and the counter substrate are brought into contact with each other via a spacer by removing the bending of the substrate. It may be.
[0057]
According to such a configuration, even when the substrates are aligned with the array substrate and the counter substrate being very close to each other, the display regions do not contact each other via the spacers, Damage can be prevented. Therefore, it is possible to provide a liquid crystal display device with improved image quality by preventing the occurrence of orientation failure and image failure due to scratches. Further, by performing alignment in a state where the array substrate and the counter substrate are very close to each other, it is possible to perform alignment with high accuracy and to further improve the image quality.
[0058]
Further, in the above-described embodiment, the configuration in which the liquid crystal display device is assembled using a substrate in which one effective area is provided on one glass substrate has been described. However, a plurality of effective devices are provided on one glass substrate. A plurality of liquid crystal display devices may be assembled at the same time using a substrate provided with a region. In this case, at least one stage is provided with a plurality of recesses corresponding to each effective area, or a single recess is formed and a plurality of protrusions are formed in the recess, It can be set as the structure which formed the protrusion part high so that the protrusion part which opposes a center part is the lowest, and it goes to the peripheral part of each effective area | region.
[0059]
As detailed above, according to the present invention, substrate Improved image quality without scratching Flat panel display A flat panel display assembling method and an assembling apparatus capable of assembling can be provided.
[Brief description of the drawings]
FIG. 1 is a side view showing an entire assembly apparatus according to an embodiment of the present invention.
FIG. 2 is a perspective view showing an upper stage and a lower stage of the assembly apparatus.
FIG. 3 is an exploded perspective view and a side view of a liquid crystal display device assembled by the assembly device.
FIG. 4 is a diagram showing an assembly configuration for assembling a liquid crystal display device using the assembly apparatus.
FIG. 5 is a diagram schematically showing an assembling apparatus and assembling method according to a second embodiment of the present invention.
FIG. 6 is a cross-sectional view and a perspective view showing a first modification of the upper stage and the lower stage.
FIG. 7 is a cross-sectional view showing a second modification of the upper stage and the lower stage.
FIG. 8 is a cross-sectional view showing a third modification of the upper stage and the lower stage.
FIG. 9 is a perspective view showing a fourth modification of the upper stage and the lower stage.
[Explanation of symbols]
10 ... Assembly equipment
12 ... Bonding mechanism
14 ... Supply mechanism
16 ... Body frame
18… Upper stage
18a: substrate holding surface
20 ... Lower stage
20a ... Substrate holding surface
22 ... XY-Θ stage
26, 38 ... recess
28 ... Exhaust port
32. First vacuum pump
34, 40 ... Adsorption holes
36 ... second vacuum pump
43 ... Third vacuum pump
60 ... Array substrate
62 ... Counter substrate
60a, 62a ... Effective area
64 ... Sealing material
66 ... Spacer

Claims (18)

A sealing material is provided so as to surround the display area, and a first transparent substrate provided with a plurality of spacers in the display area and a second transparent substrate are arranged to face each other.
In a state where the display area of at least one of the first and second transparent substrates is bent in a direction away from the display area of the other transparent substrate, the peripheral portions of the first and second transparent substrates Are bonded together through the sealing material,
Move and align at least one of the bonded first and second transparent substrates,
An assembly method of a flat panel display, wherein after the alignment is completed, the display areas of the first and second transparent substrates are brought into contact with each other through the spacers except for the bending of the transparent substrate. A sealing material is provided so as to surround the display area, and a first transparent substrate provided with a plurality of spacers in the display area and a second transparent substrate are arranged to face each other.
In a state where the display areas of the first and second transparent substrates are bent in directions away from each other, the peripheral portions of the first and second transparent substrates are bonded together via the sealing material,
Move and align at least one of the bonded first and second transparent substrates,
After the alignment is completed, the flat panel is characterized in that the display areas of the first and second transparent substrates are brought into contact with each other through the spacer except for the bending of the first and second transparent substrates. Display assembly method. A sealing material is provided so as to surround the display area, and a first transparent substrate provided with a plurality of spacers in the display area and a second transparent substrate are arranged to face each other.
While the display area of at least one of the first and second transparent substrates is bent in a direction away from the display area of the other transparent substrate, the first and second transparent substrates are brought close to each other. Move and align at least one of the first and second transparent substrates;
The peripheral portions of the aligned first and second transparent substrates are bonded together via the sealing material,
An assembly method of a flat panel display, wherein after the alignment is completed, the display areas of the first and second transparent substrates are brought into contact with each other through the spacers except for the bending of the transparent substrate. A sealing material is provided so as to surround the display area, and a first transparent substrate provided with a plurality of spacers in the display area and a second transparent substrate are arranged to face each other.
In a state where the display areas of the first and second transparent substrates are bent in directions away from each other, the first and second transparent substrates are brought close to each other and at least one of the first and second transparent substrates is Move and align,
The peripheral portions of the aligned first and second transparent substrates are bonded together via the sealing material,
After the alignment is completed, the flat panel is characterized in that the display areas of the first and second transparent substrates are brought into contact with each other through the spacer except for the bending of the first and second transparent substrates. Display assembly method. The flat panel display assembly according to any one of claims 1 to 4, wherein the flat panel display is bent so that a difference in height between a peripheral edge portion of the transparent substrate and a central portion of the display area is 50 µm or more. Method. An upper stage and a lower stage, each having a substrate holding surface for holding a transparent substrate constituting a flat panel display, the substrate holding surfaces being arranged in a state of facing each other;
A position adjusting mechanism for adjusting the position of at least one of the upper stage and the lower stage with respect to the other stage;
A suction means for sucking and holding the transparent substrate on the substrate holding surfaces of the upper stage and the lower stage,
At least one of the upper stage and the lower stage has a recess formed on the substrate holding surface and facing the display area of the transparent substrate, and the suction means exhausts the inside of the recess to An assembling apparatus for a flat panel display, comprising suction means for bending the display area into the recess. 7. The flat panel display assembling apparatus according to claim 6, wherein each of the upper stage and the lower stage includes the recess formed in the substrate holding surface. 8. The flat panel display assembling apparatus according to claim 6, wherein the depth of the central portion of the recess is set to 50 μm or more. The suction means includes first vacuum suction means for sucking a peripheral edge portion of the transparent substrate to the substrate holding surface, and the suction means suctions a display area of the transparent substrate through the recess. 8. The flat panel display assembling apparatus according to claim 6, further comprising two vacuum suction means. 7. The flat according to claim 6, wherein the at least one stage has a plurality of projecting portions protruding from a bottom surface of the recess and capable of contacting the surface of the bent transparent substrate. Panel display assembly equipment. 8. The first and second stages respectively have a plurality of protrusions protruding from the bottom surface of the recess and capable of contacting the surface of the bent transparent substrate. An apparatus for assembling a flat panel display. 12. The flat according to claim 10, wherein the plurality of protrusions are formed such that a protrusion located at a central portion of the recess is the lowest, and increases toward a peripheral edge of the recess. Panel display assembly equipment. 13. The flat panel display assembly apparatus according to claim 10, wherein the recess is formed in a rectangular shape having a size corresponding to a display area of the transparent substrate. The flat panel display according to claim 6 or 7, wherein the recess is formed in a rectangular shape having a size corresponding to a display area of the transparent substrate and has a spherical bottom surface. Assembly equipment. An upper stage and a lower stage, each having a substrate holding surface for holding a substrate constituting a flat panel display, wherein the substrate holding surfaces are arranged in opposition to each other;
A position adjusting mechanism for adjusting the position of at least one of the upper stage and the lower stage with respect to the other stage;
A mechanism in which at least one substrate surface of the first and second substrates is bent in a direction away from the other substrate surface;
An apparatus for assembling a flat panel display. An upper stage and a lower stage, each having a substrate holding surface for holding a substrate constituting a flat panel display, wherein the substrate holding surfaces are arranged in opposition to each other;
A position adjustment mechanism for adjusting the position of at least one of the upper stage and the lower stage with respect to the other stage,
At least one of the upper stage and the lower stage has a recess formed on the substrate holding surface and facing a display area of the substrate, and a peripheral portion of the substrate is held by the substrate holding surface. Flat panel display assembly equipment. A sealing material is provided so as to surround the display area, and a first substrate provided with a plurality of spacers in the display area and a second substrate are arranged to face each other.
In a state where the display area of at least one of the first and second substrates is bent in a direction away from the display area of the other substrate, the peripheral portions of the first and second substrates are bonded to the sealing material. Pasted through,
A method of assembling a flat panel display, wherein positioning is performed by moving at least one of the bonded first and second substrates. 18. The method of assembling a flat panel display according to claim 17, wherein the spacer is fixedly disposed on at least one of the first and second substrates.

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