CN110646960B - Crimping device and manufacturing method of display device - Google Patents
Crimping device and manufacturing method of display device Download PDFInfo
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- CN110646960B CN110646960B CN201910555132.3A CN201910555132A CN110646960B CN 110646960 B CN110646960 B CN 110646960B CN 201910555132 A CN201910555132 A CN 201910555132A CN 110646960 B CN110646960 B CN 110646960B
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- front panel
- elastic body
- display panel
- display
- workpiece
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000002788 crimping Methods 0.000 title claims description 54
- 238000000034 method Methods 0.000 claims abstract description 34
- 238000002360 preparation method Methods 0.000 claims description 33
- 230000015556 catabolic process Effects 0.000 abstract description 6
- 238000006731 degradation reaction Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 49
- 239000012790 adhesive layer Substances 0.000 description 32
- 238000010586 diagram Methods 0.000 description 30
- 238000007789 sealing Methods 0.000 description 16
- 230000004048 modification Effects 0.000 description 12
- 238000012986 modification Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- 239000000758 substrate Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 230000006837 decompression Effects 0.000 description 5
- 230000003028 elevating effect Effects 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 244000043261 Hevea brasiliensis Species 0.000 description 3
- 238000004590 computer program Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920003052 natural elastomer Polymers 0.000 description 3
- 229920001194 natural rubber Polymers 0.000 description 3
- 229920003051 synthetic elastomer Polymers 0.000 description 3
- 239000005061 synthetic rubber Substances 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000006059 cover glass Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- 229920003217 poly(methylsilsesquioxane) Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
Abstract
The present invention provides at least one of a pressure bonding device capable of suppressing a difference in local elongation generated in a 2 nd work and a method for manufacturing a display device capable of suppressing a display quality degradation of a display panel even when a plurality of plate-shaped 2 nd works smaller than the 1 st work are bonded to the 1 st work having a curved surface portion. The press-bonding device is configured to bond a plate-like 2 nd work smaller than the 1 st work to the 1 st work having a curved surface portion. The press-bonding device includes a vacuum chamber, a stage disposed in the vacuum chamber and on which the 1 st workpiece is placed, and an elastic body having elasticity higher than that of the stage. The press-bonding device brings the distance between the elastic body and the carrier close to each other, thereby press-bonding the 2 nd workpiece to the 1 st workpiece.
Description
Technical Field
The present invention relates to a crimping device and a method for manufacturing a display device.
Background
Display devices having curved surfaces are known. For example, patent document 1 discloses a technique of using a cover glass having a curved surface as a front panel.
A bonding method for bonding a display panel to a cover glass is roughly classified into a roller type shown in patent document 2 and a diaphragm type shown in patent document 3.
Prior art literature
Patent literature
Patent document 1: japanese patent application laid-open No. 2015-92422
Patent document 2; japanese patent laid-open publication 2016-179600
Patent document 3: japanese patent application laid-open No. 2015-79587
In the roller technology disclosed in patent document 2, if a plurality of display panels are bonded to one front panel, the rollers are pressed against the surface curved from the end of the display panel, and there is a possibility that the display quality of the display panel is lowered because the display panel has a difference in local elongation.
In the diaphragm technique disclosed in patent document 3, when a diaphragm having a plurality of display panels attached thereto is used for bonding, the display panel disposed at the center with respect to the convex portion or concave portion of the front panel is not pressed against the surface curved from the end portion of the display panel. However, the display panel disposed at a position facing the end side of the convex portion or the concave portion of the front panel is pressed against the surface curved from the end portion of the display panel, and a difference in local elongation occurs in the display panel, so that there is a possibility that the display quality of the display panel is lowered.
Disclosure of Invention
The present invention aims to provide a press-bonding device capable of suppressing a difference in local elongation generated in a 2 nd workpiece even when a plurality of plate-shaped 2 nd workpieces smaller than the 1 st workpiece are bonded to the 1 st workpiece having a curved surface portion, and a method for manufacturing a display device capable of suppressing a display quality degradation of a display panel.
A crimping apparatus according to an aspect is a crimping apparatus for bonding a plurality of plate-like 2 nd workpieces smaller than the 1 st workpiece to the 1 st workpiece having a curved surface portion, the crimping apparatus including: a vacuum chamber; a stage disposed in the vacuum chamber for placing the 1 st workpiece thereon; and an elastic body that is more elastic than the stage, wherein the 2 nd workpiece is pressed against the 1 st workpiece by bringing a distance between the elastic body and the stage closer to each other.
A method for manufacturing a display device according to an aspect is a method for manufacturing a display device in which a plurality of display panels smaller than a front panel are bonded to the front panel having a curved surface portion and light transmittance, the method including: a preparation step of mounting the front panel on a stage facing an elastic body, and mounting the display panel on a carrier sheet interposed between the elastic body and the front panel; and a pressure bonding step of, after the preparation step, holding the carrier sheet and the display panel by the elastic body and the carrier, thereby pressure bonding the display panel to the front panel.
Another method for manufacturing a display device, in which a plurality of display panels smaller than a front panel are bonded to the front panel having a curved surface portion and light transmittance, includes: a preparation step of mounting the display panel on an elastic body and mounting the front panel on a stage facing the elastic body; and a pressure bonding step of, after the preparation step, holding the display panel between the elastic body and the stage, thereby pressure bonding the display panel to the front panel
Drawings
Fig. 1 is a schematic cross-sectional view of a display device of embodiment 1.
Fig. 2 is a schematic plan view of the display device of embodiment 1.
Fig. 3 is a configuration diagram of a crimping apparatus according to embodiment 1.
Fig. 4 is a plan view illustrating the holding of the carrier sheet in the crimping apparatus of embodiment 1.
Fig. 5 is a configuration diagram for explaining the operation of the crimping device according to embodiment 1.
Fig. 6 is a configuration diagram for explaining the operation of the crimping device according to embodiment 1.
Fig. 7 is a configuration diagram for explaining the operation of the crimping device according to embodiment 1.
Fig. 8 is an explanatory view for explaining a diaphragm of the crimping apparatus of the comparative example.
Fig. 9 is a configuration diagram for explaining the operation of the pressure bonding apparatus according to modification 1 of embodiment 1.
Fig. 10 is a configuration diagram for explaining the operation of the pressure bonding apparatus according to modification 1 of embodiment 1.
Fig. 11 is a configuration diagram for explaining the operation of the pressure bonding apparatus according to modification 1 of embodiment 1.
Fig. 12 is a schematic cross-sectional view of the display device of embodiment 2.
Fig. 13 is a schematic plan view of the display device of embodiment 2.
Fig. 14 is a configuration diagram of a crimping apparatus according to embodiment 2.
Fig. 15 is a configuration diagram for explaining the operation of the crimping device according to embodiment 2.
Fig. 16 is a configuration diagram for explaining the operation of the crimping device according to embodiment 2.
Fig. 17 is a configuration diagram for explaining the operation of the crimping device according to embodiment 2.
Fig. 18 is a configuration diagram of a crimping apparatus according to embodiment 3.
Fig. 19 is a configuration diagram for explaining the operation of the crimping device according to embodiment 3.
Fig. 20 is a configuration diagram of a crimping apparatus according to embodiment 4.
Fig. 21 is a configuration diagram for explaining the operation of the crimping device according to embodiment 4.
Fig. 22 is a configuration diagram of a crimping apparatus according to embodiment 5.
Fig. 23 is a configuration diagram for explaining the operation of the crimping device according to embodiment 5.
Fig. 24 is a configuration diagram for explaining the operation of the crimping device according to embodiment 5.
Fig. 25 is a configuration diagram for explaining the operation of the crimping device according to embodiment 5.
Wherein reference numerals are as follows:
1. front panel
1F 1 st side
1R 2 nd side
2. Display panel
3. Display device
4. Carrier sheet
5. Vacuum chamber
6. Sealing member
7. Diaphragm
8. Attaching unit
9. Mask film
10. Carrier table
20. 21, 22, 23, 24, 25, 26, 27, 28, 29 elastomer
30. Control device
65. 66 lifting device
100. Crimping device
Detailed Description
The mode (embodiment) for carrying out the present invention will be described in detail with reference to the accompanying drawings. The present invention is not limited to the following embodiments. The constituent elements described below include substantially the same elements that can be easily understood by those skilled in the art. The following components may be appropriately combined. The disclosure is merely an example, and any suitable modification having the gist of the present invention that is easily understood by those skilled in the art is certainly included in the scope of the present invention. The drawings are for clarity of description, and the width, thickness, shape, and the like of each portion are schematically shown as compared with the actual embodiment, but are merely examples, and do not limit the explanation of the present invention. In the present specification and the drawings, elements related to the conventional drawings and identical to those described above are given the same reference numerals, and detailed description thereof may be omitted as appropriate.
(embodiment 1)
Fig. 1 is a schematic cross-sectional view of a display device of embodiment 1. Fig. 2 is a schematic plan view of the display device of embodiment 1. FIG. 1 is a section I-I' of FIG. 2. As shown in fig. 1, the display device 3 of embodiment 1 includes a front panel 1 and three display panels 2. The front panel 1 is bonded with three display panels 2 at intervals Δl shown in fig. 2. The display panel 2 is smaller than the front panel 1 in plan view.
The front panel 1 is a cover member for protecting the display panel 2. The display panel 2 is disposed on one side of the front panel 1, and is mounted on the front panel 1 through an adhesive layer, not shown. The front panel 1 is rectangular when viewed from the front as shown in fig. 2, but the shape is not limited thereto.
As shown in fig. 1, the front panel 1 is entirely curved with a curvature R1. The front panel 1 is made of glass or synthetic resin having light transmittance. Therefore, light from the display panel 2 is transmitted through the front panel 1. Further, a video is displayed on a display surface along the front surface of the front panel 1 as viewed from the viewer.
The display panel 2 is, for example, a liquid crystal panel or an organic light emitting diode panel (hereinafter referred to as an OLED panel). The liquid crystal panel or the OLED panel may also include a touch panel. In the case where the display panel 2 is a liquid crystal panel, a backlight is provided on the back side of the display panel 2. The display panel 2 includes a 1 st substrate and a 2 nd substrate formed of glass or the like and a liquid crystal layer sandwiched between the 1 st substrate and the 2 nd substrate.
For example, the display panel 2 is rectangular when viewed from the front. The display panel 2 is curved, and both ends of the display panel 2 in one direction are located on the front side than the center in one direction as seen from the viewer.
As shown in fig. 1, the curvature of the curved surface portion of the front panel 1 is fixed in the entire surface. The front surface of the display panel 2 is attached to the 2 nd surface 1R of the front panel 1.
In order to manufacture the display device 3 described above, the crimping device 100 is prepared in embodiment 1. Fig. 3 is a configuration diagram of a crimping apparatus according to embodiment 1. Fig. 4 is an explanatory view illustrating holding of a carrier sheet in the crimping apparatus of embodiment 1. Fig. 5 is a configuration diagram for explaining the operation of the crimping device according to embodiment 1. The pressure bonding apparatus 100 includes a vacuum chamber 5, a vacuum source 51, a stage 10, an elastic body 20, a fixing stage 62, setting stages 61, 63, a lifting device 65, a pipe 52, and a control device 30.
The vacuum chamber 5 is a container for accommodating the stage 10, the fixing stage 62, the setting stages 61, 63, and the elevating device 65. The vacuum source 51 is a pump, and discharges air in the vacuum chamber 5 through a pipe 52 to lower the pressure in the vacuum chamber 5 to the atmosphere.
The stage 10 is disposed in the vacuum chamber 5, and is a jig for fixing the front panel 1 in a state of being closely attached to the fixing portion 11 along the surface of the curved surface portion. The setting table 61 is provided for the carrier 10. The distance between the fixing table 62 and the installation table 61 can be appropriately changed by the elevating device 65. The lifting device 65 lifts the installation table 61 relative to the fixed table 62 by driving of a driving mechanism such as a hydraulic pressure or a motor based on a control command of the control device 30.
The elastic body 20 is a base having elasticity. The elastic body 20 is formed of a sheet-like synthetic rubber, an elastic body, or the like having a uniform film thickness when no pressure is applied. The elastic member may be natural rubber. The elastic body 20 is fixed to the surface of the installation table 63 on the installation table 61 side. As shown in fig. 3, the elastic body 20 has a concave pressure receiving surface 20F along the fixing surface 11F of the fixing portion 11.
The carrier sheet 4 is an elastic member. The elastic member is formed of a sheet-like synthetic rubber, an elastomer, or the like having a uniform film thickness when no pressure is applied. The elastic member may be natural rubber.
As shown in fig. 4, the carrier sheet 4 is supported at both ends by a support plate 40. Thereby, the carrier sheet 4 covers a part of the front panel 1 in a plan view. The display panel 2 is attached to the carrier sheet 4 by an adhesive layer or the like in advance. The carrier sheet 4 is positioned at a predetermined position where the display panel 2 overlaps the front panel 1 in a plan view.
As shown in fig. 3, the carrier sheet 4 is sandwiched between the elastic body 20 and the stage 10 in a noncontact manner. The cross-sectional line L1 of the mounting surface of the carrier sheet 4 on which the display panel 2 is mounted is along a tangent line L2 of the front panel 1 opposed at a minimum distance.
In this way, the mounting surface of the carrier sheet 4 on which the display panel 2 is mounted is inclined at an angle along the tangent line of the fixing surface 11F of the stage 10 facing at the minimum distance.
The control device 30 is a computer including at least a CPU (Central Processing Unit: central processing unit) as an arithmetic device and a memory as a storage device, for example. The control device 30 can also implement various functions by executing a computer program using these hardware resources.
Specifically, control device 30 reads a computer program stored in a predetermined storage unit (not shown) and expands the computer program in the memory, and causes the CPU to execute a command included in the program expanded in the memory. In embodiment 1, control device 30 controls the operation of vacuum source 51 to control the pressure in vacuum chamber 5. The control device 30 controls the operation of the lifting device 65 to control the distance between the installation table 61 and the installation table 63. Thereby, the distance between the elastic body 20 and the stage 10 is changed by driving the elevating device 65.
Next, a method for manufacturing a display device using the pressure bonding apparatus 100 will be described. First, in the preparation step, as shown in fig. 3, the first display panel 2 is mounted on the carrier sheet 4 in the vacuum chamber 5 via the adhesive layer. At this time, an adhesive layer is also previously attached to the side of the display panel 2 opposite to the front panel 1. The adhesive force of the adhesive layer on the carrier sheet 4 side is smaller than that of the adhesive layer on the side opposite to the front panel 1.
In the preparation step, the front panel 1 is fixed in a state of being in close contact with the fixing portion 11, and the front panel 1 is mounted on the stage 10 via an adhesive layer. In this way, the front panel 1 is mounted on the stage 10. The front panel 1 may be mounted on the stage 10 before or after the first display panel 2 is mounted on the carrier sheet 4.
After the preparation step, a decompression step of decompressing the inside of the vacuum chamber 5 is performed. The control device 30 controls the operation of the vacuum source 51 to control the pressure in the vacuum chamber 5.
After the pressure in the vacuum chamber 5 reaches a predetermined pressure, a pressure bonding step of bonding the display panel 2 to the front panel 1 is performed. As shown in fig. 5, control device 30 sets lifting device 65 to the raised state, and reduces the distance between installation table 61 and installation table 63.
As a result, the distance between the carrier sheet 4 and the fixing portion 11 of the stage 10 approaches, and the first display panel 2 mounted on the carrier sheet 4 is in contact with the front panel 1. In the pressure bonding step, when the front panel 1 is in contact with the first display panel 2, the first display panel 2 is sandwiched between the elastic body 20 and the front panel 1 together with the carrier sheet 4.
After the pressure bonding step, in the peeling step, as shown in fig. 6, the controller 30 sets the lifting device 65 to a lowered state, and increases the distance between the installation table 61 and the installation table 63. Thereby, the carrier sheet 4 is peeled from the first display panel 2 while the first display panel 2 is bonded to the front panel 1.
Next, as shown in fig. 6, a second display panel 2 is mounted on the carrier sheet 4 via an adhesive layer. The carrier sheet 4 is positioned at a predetermined position different from the position where the first display panel 2 is mounted and where the second display panel 2 overlaps the front panel 1 in a plan view. Next, although not shown, in the pressure bonding step, the controller 30 sets the lifting device to the raised state, and reduces the distance between the installation table 61 and the installation table 63.
After the pressure bonding step, in the peeling step, as shown in fig. 7, the controller 30 sets the lifting device to a lowered state, and increases the distance between the installation table 61 and the installation table 63. Thereby, the carrier sheet 4 is peeled from the second display panel 2 while the second display panel 2 is bonded to the front panel 1.
Next, as shown in fig. 7, a third display panel 2 is mounted on the carrier sheet 4 via an adhesive layer. The carrier sheet 4 is positioned at a predetermined position different from the position where the first display panel 2 and the second display panel are mounted and where the third display panel 2 overlaps the front panel 1 in a plan view. Next, although not shown, as described above, the process of the crimping step is performed. Then, the peeling process is performed.
Next, the pressure in the vacuum chamber 5 is restored to the atmospheric pressure, and the display device 3 shown in fig. 1 and 2 is taken out.
Fig. 8 is an explanatory view for explaining a diaphragm of the crimping apparatus of the comparative example. As shown in fig. 8, when the bonding is performed using the separator 7 to which the plurality of display panels 2 are attached, the display panel 2 disposed at the center with respect to the convex or concave portion of the front panel 1 is not pressed against the surface curved from the end portion of the display panel 2. However, the display panels 2 disposed at positions facing the end sides of the convex portions or concave portions of the front panel 1 are pressed against the surfaces curved from the end portions of the display panels 2, and the gap G is generated at one side of each display panel 2. As a result, a difference in local elongation occurs in the display panel 2 disposed at a position facing the end side of the convex portion or concave portion of the front panel 1, and therefore there is a possibility that the display quality of the display panel 2 is degraded.
In contrast, as shown in fig. 5, 6, and 7, in embodiment 1, the plurality of display panels 2 (three display panels 2) are not pressed against the surface curved from the end of the display panel 2. The display panel 2 is attached to the front panel 1 from the center to both ends of the display panel 2. As a result, the difference in local elongation is generated on both sides of the display panel 2 across the center of the display panel 2, and the difference is canceled. As a result, the display quality of the display panel 2 is suppressed from being lowered.
In embodiment 1, the manufactured display device 3 is mounted on, for example, an instrument panel of a vehicle. The display device 3 has an advantage that the curved interior of the vehicle is smoothly connected to the surface of the display device 3 by bending the surface of the front panel 1. On the display panel 2, for example, a navigator, a speedometer, a tachometer, a fuel gauge, a water thermometer, and the like are displayed.
The display device 3 is not necessarily mounted on a vehicle, and may be applied to other electronic devices such as a mobile terminal. Even when the display device 3 is mounted on a vehicle, the image displayed by the display device 3 is not limited to the meter class of the vehicle, and may be, for example, a map for car navigation.
The display panel 2 may be an organic EL panel. In the case where the display panel 2 is an organic EL panel, a backlight is not required. The display panel 2 may have a touch detection function. That is, a touch panel may be provided inside the display panel 2 or on the surface of the display panel 2.
The front panel 1 is not necessarily formed of glass. The front panel 1 may be formed of, for example, a light-transmitting synthetic resin.
As described above, the pressure bonding apparatus 100 includes the elastic body 20, the stage 10, and the carrier sheet 4 interposed between the elastic body 20 and the stage 10. The stage 10 is fixed to the 1 st surface 1F of the curved surface portion of the front panel 1 so as to overlap with the 1 st surface 1F. The carrier sheet 4 holds the display panel 2 and brings the elastic body 20 closer to the stage 10, thereby pressing the display panel 2 as the 2 nd workpiece against the 2 nd surface 1R of the front panel 1 as the 1 st workpiece.
Thereby suppressing the difference in local elongation generated on the display panel 2. The press-bonding device 100 is capable of simultaneously bonding a plurality of plate-shaped display panels 2 as the 2 nd work pieces to a plate-shaped front panel 1 as the 1 st work piece having a curved surface portion. This shortens the manufacturing time of the display device 3 and reduces the cost of the display device 3.
In addition, as long as the pressure bonding device 100 of embodiment 1 is used, the display panel 2 can be attached to an arbitrary position according to the size of the front panel 1 depending on the position of the carrier sheet 4.
In addition, according to the method of manufacturing the display device 3 described above, the pressure for pressing the display panel 2 against the front panel 1 can be sufficiently applied. As a result, the state in which the display panel 2 is bonded to the front panel 1 is stable, and degradation of display quality can be suppressed. In addition, the display panel 2 is not easily detached from the front panel 1.
In addition, when the display panel 2 is a liquid crystal panel, the difference in local elongation occurring in the display panel 2 can be suppressed, and therefore, misalignment between the array substrate and the counter substrate can be suppressed. As a result, degradation of display quality can be suppressed.
(modification 1 of embodiment 1)
Fig. 9 to 11 are configuration diagrams for explaining the operation of the pressure bonding device according to modification 1 of embodiment 1. In the description of modification 1 of embodiment 1, the same reference numerals are given to the same constituent elements as those of embodiment 1, and detailed description thereof is omitted.
In the same manner as in the pressure bonding apparatus of embodiment 1, in the pressure bonding apparatus 100 of modification 1 of embodiment 1, the fixing surface 11F of the stage 10 has a curved surface portion. The stage 10 according to modification 1 of embodiment 1 has the fixing portion 11 described in embodiment 1.
Unlike the pressure bonding apparatus of embodiment 1, the pressure bonding apparatus 100 of modification 1 of embodiment 1 includes elastic bodies 21, 22, and 23 different from each of the preparation steps. As shown in fig. 9, the elastic body 21 is mounted on the setting table 63. The elastic body 21 has a size facing a part of the fixing surface 11F of the stage 10. As shown in fig. 10, the elastic body 22 is mounted on the setting table 63. The elastic body 22 has a size facing a part of the fixing surface 11F of the stage 10. As shown in fig. 11, the elastic body 23 is mounted on the setting table 63. The elastic body 23 has a size facing a part of the fixing surface 11F of the stage 10.
As shown in fig. 9, the elastic body 21 has a concave pressure receiving surface 21F along the fixing surface 11F of the fixing portion 11. As shown in fig. 10, the elastic body 22 has a concave pressure receiving surface 22F along the fixing surface 11F of the fixing portion 11. As shown in fig. 11, the elastic body 23 has a concave pressure receiving surface 23F along the fixing surface 11F of the fixing portion 11.
Since the elastic bodies 21, 22, and 23 are smaller than the elastic body 20 of embodiment 1, the display panel 2 can be bonded to the front panel 1 even if the pressure for pressing the stage 10 against the elastic bodies 21, 22, and 23 is small.
According to this configuration, the same operational effects as those of embodiment 1 are obtained. As in the pressure bonding apparatus of embodiment 1, the pressure bonding apparatus 100 of modification 1 of embodiment 1 can bond a plurality of display panels 2 to the front panel 1 by repeating the preparation step, the pressure bonding step, and the peeling step.
(embodiment 2)
Fig. 12 is a schematic cross-sectional view of the display device of embodiment 2. Fig. 13 is a schematic plan view of the display device of embodiment 2. Fig. 12 is a cross-sectional view of XII-XII' in fig. 13. In the description of embodiment 2, the same components as those of embodiment 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in fig. 12, the front panel 1 of embodiment 2 includes a curved surface portion 15 having a curvature R2, a curved surface portion 16 having a curvature R3 different from the curvature R2, and a connecting portion 17 connecting the curved surface portion 15 and the curved surface portion 16. That is, the curved portion 16 is curved so as to be concave when the curved portion 15 is convex when viewed from the display panel 2 side, and the curved portion 16 is curved so as to be convex when the curved portion 15 is concave when viewed from the viewer side. In this way, the front panel 1 has a plurality of curved surface portions 15, 16, and the curvatures of the curved surface portions 15, 16 are different.
As shown in fig. 12 and 13, the display panel 2 is curved. The two ends in the direction of the display panel 2 attached to the curved surface portion 15 are located on the near front side from the center of the length as seen from the viewer. In addition, both ends in one direction of the display panel 2 attached to the curved surface portion 16 are located on the rear side from the center in one direction as viewed from the viewer.
Fig. 14 is a configuration diagram of a crimping apparatus according to embodiment 2. Fig. 15 to 17 are configuration diagrams for explaining the operation of the crimping device according to embodiment 2. As shown in fig. 14 to 17, the pressure bonding apparatus 100 includes a vacuum chamber 5, a vacuum source 51, a stage 10, elastic bodies 24, 25, fixing stages 62, 64, setting stages 61, 63, lifting devices 65, 66, a pipe 52, and a control device 30.
The stage 10 is a jig disposed in the vacuum chamber 5 for fixing the front panel 1 in a state of being closely adhered to the fixing portions 11, 12 along the 1 st surface 1F of the curved surface portions 15, 16. The fixing portion 11 has a convex shape in which the installation base 63 side bulges, and the fixing portion 12 has a concave shape in which the installation base 61 side is recessed.
As shown in fig. 14, the elastic body 24 has a concave pressure receiving surface 24F along the fixing surface 11F of the fixing portion 11. As shown in fig. 16, the elastic body 25 has a convex pressure receiving surface 25F along the fixing surface 12F of the fixing portion 12.
The setting table 61 sets the stage 10. The distance between the fixing table 62 and the installation table 61 can be appropriately changed by the elevating device 65. The setting table 63 sets the elastic bodies 24, 25. The distance between the fixing table 64 and the installation table 63 can be appropriately changed by the elevating device 66. The lifting device 66 lifts the installation table 63 relative to the fixed table 64 by driving a driving mechanism such as a hydraulic pressure or a motor based on a control command from the control device 30.
As shown in fig. 14, the carrier sheet 4 is sandwiched between the elastic body 24 and the stage 10 in a noncontact manner. The section line L3 of the mounting surface of the carrier sheet 4 on which the display panel 2 is mounted is along a tangent line L4 of the front panel 1 opposed at a minimum distance.
As shown in fig. 16, the carrier sheet 4 is sandwiched between the elastic body 25 and the stage 10 in a noncontact manner. The section line L5 of the mounting surface of the carrier sheet 4 on which the display panel 2 is mounted is along the tangent line L6 of the front panel 1 which is opposed at the greatest distance. The maximum normal line distance between the display panel 2 and the front panel 1 on the normal line of the fixing surface 12F shown in fig. 16 is equal to the minimum normal line distance between the display panel 2 and the front panel 1 on the normal line of the fixing surface 11F shown in fig. 14.
Next, a method for manufacturing a display device using the above-described crimping apparatus 100 will be described. First, in the preparation step, as shown in fig. 14, the first display panel 2 is mounted on the carrier sheet 4 in the vacuum chamber 5 via the adhesive layer. In this case, it is preferable that an adhesive layer is also attached to the side of the first display panel 2 opposite to the front panel 1. The adhesive force of the adhesive layer on the carrier sheet 4 side is smaller than that of the adhesive layer on the side opposite to the front panel 1.
In the preparation step, the front panel 1 is fixed in a state of being in close contact with the fixing portions 11 and 12, and the front panel 1 is mounted on the stage 10 via an adhesive layer. The front panel 1 may be mounted on the stage 10 before or after the first display panel 2 is mounted on the carrier sheet 4.
After the preparation step, a decompression step of decompressing the inside of the vacuum chamber 5 is performed. The control device 30 controls the operation of the vacuum source 51 to control the pressure in the vacuum chamber 5.
After the pressure in the vacuum chamber 5 reaches a predetermined pressure, a pressure bonding step of bonding the display panel 2 to the front panel 1 is performed. As shown in fig. 15, control device 30 sets lifting device 65 to a raised state, and reduces the distance between installation table 61 and installation table 63.
As a result, the distance between the carrier sheet 4 and the fixing portion 11 of the stage 10 is reduced, and the display panel 2 attached to the carrier sheet 4 is brought into contact with the front panel 1. In the pressure bonding step, when the front panel 1 is in contact with the first display panel 2, the first display panel 2 is sandwiched between the elastic body 24 and the front panel 1 together with the carrier sheet 4.
After the pressure bonding step, in the peeling step, as shown in fig. 16, the controller 30 sets the lifting device 65 to a lowered state, and increases the distance between the installation table 61 and the installation table 63. Thereby, the carrier sheet 4 is peeled from the first display panel 2 while the first display panel 2 is bonded to the front panel 1.
Next, as shown in fig. 16, a second display panel 2 is mounted on the carrier sheet 4 via an adhesive layer. The carrier sheet 4 is positioned at a predetermined position different from the position where the first display panel 2 is mounted and where the second display panel 2 overlaps the front panel 1 in a plan view.
Next, a press-bonding process for bonding the display panel 2 to the front panel 1 is performed. As shown in fig. 17, control device 30 sets lifting device 66 to a lowered state, and reduces the distance between installation table 61 and installation table 63.
As a result, the distance between the carrier sheet 4 and the fixing portion 12 of the stage 10 is reduced, and the display panel 2 attached to the carrier sheet 4 is brought into contact with the front panel 1. In the pressure bonding step, when the front panel 1 is in contact with the second display panel 2, the second display panel 2 is sandwiched between the elastic body 25 and the front panel 1 together with the carrier sheet 4.
After the pressure bonding step, although not shown in the drawing, the controller 30 sets the lifting device 66 to a raised state, and increases the distance between the installation table 61 and the installation table 63. Thereby, the carrier sheet 4 is peeled from the second display panel 2 while the second display panel 2 is bonded to the front panel 1.
Next, the pressure in the vacuum chamber 5 is returned to the atmospheric pressure, and the display device 3 shown in fig. 12 and 13 is taken out.
In embodiment 2, the two display panels 2 are not pressed against the surface curved from the end portions of the display panels 2. The display panel 2 is gradually attached to the front panel 1 from the center to both ends of the display panel 2. Thus, the difference in local elongation occurs on both sides of the display panel 2 across the center of the display panel 2, and the differences cancel each other. As a result, the display quality of the display panel 2 is suppressed from being lowered.
As described above, the pressure bonding device 100 can bond the display panel 2 to an arbitrary position according to the position of the carrier sheet 4, corresponding to the front panel 1 including the curved surface portion 15 having the curvature R2 and the curved surface portion 16 having the curvature R3 different from the curvature R2. The pressure bonding device 100 is capable of bonding the display panel 2 to an arbitrary position corresponding to the front panel 1 including the concave surface and the convex surface according to the position of the carrier sheet 4.
This can suppress the difference in local elongation occurring in the display panel 2. The press-bonding device 100 is capable of simultaneously bonding a plurality of plate-shaped display panels 2 as the 2 nd work pieces to a plate-shaped front panel 1 as the 1 st work piece having a curved surface portion. This shortens the manufacturing time of the display device 3 and reduces the cost of the display device 3.
By changing the thicknesses of the elastic body 24 and the elastic body 25, it is possible to sufficiently apply the pressing force for pressing the display panel 2 against the curved surface portion 15 and the curved surface portion 16, respectively, which are different in distance from the setting table 61. As a result, even the front panel 1 having the concave-convex shape can be attached with the plurality of display panels 2. In addition, the display panel 2 is not easily detached from the front panel 1.
Embodiment 3
Fig. 18 is a configuration diagram of a crimping apparatus according to embodiment 3. Fig. 19 is a configuration diagram for explaining the operation of the crimping device according to embodiment 3. In the description of embodiment 3, the same components as those of embodiment 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
The pressure bonding apparatus 100 includes a vacuum chamber 5, a vacuum source 51, a stage 10, an elastic body 20, a fixing stage 62, setting stages 61, 63, a lifting device 65, a pipe 52, and a control device 30. In the crimping apparatus of embodiment 3, the carrier sheet 4 described in embodiment 1 is not used. The display panel 2 is directly mounted to the elastic body 20.
Next, a method for manufacturing a display device using the crimping apparatus 100 of embodiment 3 will be described. First, in the preparation step, as shown in fig. 18, three display panels 2 are mounted on the pressure receiving surface 20F of the elastic body 20 in the vacuum chamber 5 via an adhesive layer. At this time, an adhesive layer is also previously attached to the side of the display panel 2 opposite to the front panel 1. The adhesive force of the adhesive layer on the pressure receiving surface 20F side is smaller than that of the adhesive layer on the side facing the front panel 1.
In the preparation step, the front panel 1 is fixed in a state of being in close contact with the fixing portion 11, and the front panel 1 is mounted on the stage 10 via an adhesive layer. The front panel 1 may be mounted on the stage 10 before or after the first display panel 2 is mounted on the carrier sheet 4.
As shown in fig. 18, the elastic body 20 has a concave pressure receiving surface 20F along the fixing surface 11F of the fixing portion 11. Accordingly, the distances D1, D2, and D3 between the display panels 2 and the front panel 1 are the same.
After the preparation step, a decompression step of decompressing the inside of the vacuum chamber 5 is performed. The control device 30 controls the operation of the vacuum source 51 to control the pressure in the vacuum chamber 5.
After the pressure in the vacuum chamber 5 reaches a predetermined pressure, a pressure bonding step of bonding the display panel 2 to the front panel 1 is performed. As shown in fig. 19, control device 30 sets lifting device 65 to a raised state, and reduces the distance between installation table 61 and installation table 63.
As a result, the distance between the elastic body 20 and the fixing portion 11 of the stage 10 is reduced, and the three display panels 2 are brought into contact with the front panel 1. In the pressure bonding step, when the front panel 1 is in contact with the first display panel 2, the display panel 2 is sandwiched between the elastic body 20 and the front panel 1.
After the pressure bonding step, in the peeling step, the controller 30 sets the lifting device 65 to a lowered state, and increases the distance between the installation table 61 and the installation table 63. Thereby, the elastic body 20 is peeled from the three display panels 2 while the three display panels 2 are bonded to the front panel 1.
Next, the pressure in the vacuum chamber 5 is restored to the atmospheric pressure, and the display device 3 shown in fig. 1 and 2 is taken out.
As described above, the pressure bonding apparatus 100 holds the display panel 2 by the elastic body 20 and brings the elastic body 20 and the stage 10 closer together, thereby pressure bonding the display panel 2 to the 2 nd surface 1R of the front panel 1.
As described above, according to the method of manufacturing the display device 3, the plurality of display panels 2 smaller than the front panel 1 can be bonded to the front panel 1 having the curved surface portion and being light-transmissive. The method for manufacturing the display device 3 includes a preparation step, a pressure bonding step, and a peeling step. The preparation step is to mount the display panel 2 on at least one elastic body 20 having elasticity, and mount the front panel 1 on the stage 10 facing the elastic body 20. After the preparation step, the display panels 2 are sandwiched between the elastic body 20 and the stage 10, and the display panels 2 are respectively pressed against the front panel 1 at different positions. In the peeling step, the distance between the elastic body 20 and the stage 10 is increased, and the display panel 2 is peeled from the elastic body 26.
This can suppress the difference in local elongation occurring in the display panel 2. The pressure bonding apparatus 100 simultaneously bonds a plurality of display panels 2, which are the 2 nd workpieces, to a front panel 1, which is the 1 st workpiece, which is a plate having a curved surface portion. This shortens the manufacturing time of the display device 3 and reduces the cost of the display device 3.
Alternatively, as shown in the modification of embodiment 1, the display panel 2 as the 2 nd workpiece may be pressed against the 2 nd surface 1R of the front panel 1 as the 1 st workpiece one by one using the elastic bodies 21, 22, and 23.
By deforming the plurality of display panels 2 one by one, the attachment position accuracy can be improved and the display quality can be suppressed from being lowered. And the difference in local elongation occurring on the display panel 2 can be suppressed.
According to embodiment 3, it is possible to improve the attachment position accuracy of the plurality of display panels 2 and suppress degradation of display quality. And the difference in local elongation occurring on the display panel 2 can be suppressed.
Embodiment 4
Fig. 20 is a configuration diagram of a crimping apparatus according to embodiment 4. Fig. 21 is a configuration diagram for explaining the operation of the crimping device according to embodiment 4. In the description of embodiment 4, the same components as those of embodiment 2 are denoted by the same reference numerals, and detailed description thereof is omitted.
In embodiment 3, an example in which the curvature of the curved surface portion of the front panel 1 is fixed over the entire surface has been described, but the curved surface portion of the front panel 1 may be plural. In addition, the front panel 1 may be provided with curved surface portions having different curvatures. The front panel 1 may be provided with a plurality of curved portions, and these curved portions may be a curved portion including a concave surface and a convex surface.
The pressure bonding apparatus 100 includes a vacuum chamber 5, a vacuum source 51, a stage 10, an elastic body 26, fixing stages 62 and 64, setting stages 61 and 63, lifting devices 65 and 66, a pipe 52, and a control device 30. The carrier sheet 4 described in embodiment 1 is not used in the crimping device of embodiment 4. The display panel 2 is directly mounted to the elastic body 26.
Next, a method for manufacturing a display device using the crimping apparatus 100 of embodiment 4 will be described. First, in the preparation step, as shown in fig. 20, two display panels 2 are mounted on the pressure receiving surfaces 26FA, 26FB of the elastic body 26 in the vacuum chamber 5 via the adhesive layer. At this time, an adhesive layer is also attached to the display panel 2 on the side facing the front panel 1. The adhesive force of the adhesive layers on the pressure receiving surfaces 26FA, 26FB side is smaller than that of the adhesive layer on the side facing the front panel 1.
In the preparation step, the front panel 1 is fixed in a state of being in close contact with the fixing portion 11, and the front panel 1 is mounted on the stage 10 via an adhesive layer. The front panel 1 may be mounted on the stage 10 before or after the display panel 2 is mounted on the carrier sheet 4.
As shown in fig. 20, the elastic body 26 has a concave pressure receiving surface 26FA along the fixing surface 11F of the fixing portion 11. As shown in fig. 20, the elastic body 26 has a convex pressure receiving surface 26FB along the fixing surface 12F of the fixing portion 12. Accordingly, the distances D5 and D6 between the display panels 2 and the front panel 1 are the same.
After the preparation step, a decompression step of decompressing the inside of the vacuum chamber 5 is performed. The control device 30 controls the operation of the vacuum source 51 to control the pressure in the vacuum chamber 5.
After the pressure in the vacuum chamber 5 reaches a predetermined pressure, a pressure bonding step of bonding the display panel 2 to the front panel 1 is performed. As shown in fig. 21, control device 30 sets lifting device 65 to a raised state, and reduces the distance between installation table 61 and installation table 63.
As a result, the distance between the elastic body 26 and the fixing portion 11 of the stage 10 is reduced, and the two display panels 2 are brought into contact with the front panel 1. In the pressure bonding step, when the front panel 1 and the display panel 2 are in contact with each other, the display panel 2 is sandwiched between the elastic body 26 and the front panel 1.
After the pressure bonding step, in the peeling step, the controller 30 sets the lifting device 65 to a lowered state, and increases the distance between the installation table 61 and the installation table 63. Thereby, the elastic body 26 is peeled from the display panel 2 while the display panel 2 and the front panel 1 are bonded to each other.
Next, the pressure in the vacuum chamber 5 is restored to the atmospheric pressure, and the display device 3 shown in fig. 1 and 2 is taken out.
In the pressure bonding step, the controller 30 may set the lifting device 66 to a lowered state to reduce the distance between the installation table 61 and the installation table 63. In this case, in the peeling step, control device 30 sets lifting device 66 to the raised state, and increases the distance between installation table 61 and installation table 63.
As described above, the pressure bonding apparatus 100 holds the display panel 2 by the elastic body 26 and brings the elastic body 20 closer to the stage 10, thereby pressure bonding the display panel 2 to the 2 nd surface 1R of the front panel 1.
This can suppress the difference in local elongation occurring in the display panel 2. The pressure bonding apparatus 100 simultaneously bonds a plurality of display panels 2, which are the 2 nd workpieces, to a front panel 1, which is the 1 st workpiece, which is a plate having a curved surface portion. This shortens the manufacturing time of the display device 3 and reduces the cost of the display device 3.
As described above, according to the method of manufacturing the display device 3, the plurality of display panels 2 smaller than the front panel 1 can be bonded to the front panel 1 having the curved surface portion and being light-transmissive. The manufacturing method of the display device 3 includes a preparation process, a pressure bonding process, and a peeling process. In the preparation step, the display panel 2 is mounted on at least one elastic body 26, and the front panel 1 is mounted on the flat stage 10 facing the elastic body 26. In the pressure bonding step, after the preparation step, the display panels 2 are sandwiched between the elastic body 26 and the stage 10, and the display panels 2 are respectively pressure bonded to different positions of the front panel 1. In the peeling step, the distance between the elastic body 26 and the stage 10 is increased, and the display panel 2 is peeled from the elastic body 26.
According to embodiment 4, it is possible to improve the attachment position accuracy of the plurality of display panels 2 and suppress degradation of display quality. Further, the difference in local elongation occurring in the display panel 2 can be suppressed.
Embodiment 5
Fig. 22 is a configuration diagram of a crimping apparatus according to embodiment 5. Fig. 23 is a configuration diagram for explaining the operation of the crimping device according to embodiment 5. In the description of embodiment 5, the same components as those of embodiment 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
The pressure bonding apparatus 100 includes a vacuum chamber 5, a vacuum source 51, a pressure source 34, a stage 10, an attaching unit 8, setting stages 61 and 63, a control valve 31, pipes 36, 35, 52 and 53, and a control device 30.
The attaching unit 8 includes a setting table 63, a sealing member 6, and a diaphragm 7. The sealing member 6 is provided around the diaphragm 7 and seals the space between the mounting table 63 and the diaphragm 7.
The diaphragm 7 is an elastic member. The elastic member is formed of a sheet-like synthetic rubber, an elastomer, or the like having a uniform film thickness when no pressure is applied. The elastic member may be natural rubber.
The control valve 31 is a solenoid valve having a solenoid, and the solenoid is operated to switch between a depressurized state and a pressurized state based on a command from the control device 30. The control valve 31 is a two-position three-way valve, but is not limited thereto. For example, the control valve 31 may be of a three-position three-way type capable of selecting any one of a depressurized state, a closed state, and a pressurized state.
The control valve 31 connects a space surrounded by the diaphragm 7, the sealing member 6, and the installation table 63 to the vacuum source 51 via the pipe 36 and the pipe 53 in a depressurized state. In the depressurized state, the control valve 31 does not supply the gas from the pressure source 34 to the space surrounded by the diaphragm 7, the sealing member 6, and the installation table 63.
In the pressurized state, the control valve 31 connects the space surrounded by the diaphragm 7, the sealing member 6, and the installation table 63 to the pressure source 34 via the pipe 36 and the pipe 35. The control valve 31 supplies gas from the pressure source 34 to a space surrounded by the diaphragm 7, the sealing member 6, and the installation table 63 in a pressurized state.
Next, a method for manufacturing a display device using the above-described crimping apparatus 100 will be described. First, in the preparation step, as shown in fig. 22, an elastic body 27 is attached to the stage 10 side of the diaphragm 7 in the vacuum chamber 5. The periphery of the elastic body 27 is covered with a mask 9 formed of a plate material having higher rigidity than the diaphragm 7, such as metal. The display panel 2 is mounted to the elastic body 27 via an adhesive layer. At this time, an adhesive layer is also attached to the display panel 2 in advance on the side facing the front panel 1. The adhesive force of the adhesive layer on the separator 7 side is smaller than that of the adhesive layer on the side opposite to the front panel 1.
In the preparation step, the front panel 1 is fixed in a state of being in close contact with the fixing portion 11, and the front panel 1 is mounted on the stage 10 via an adhesive layer. The front panel 1 may be attached to the stage 10 before or after the display panel 2 is attached to the elastic body 27.
After the preparation step, a decompression step of decompressing the inside of the vacuum chamber 5 is performed. The control device 30 sets the control valve 31 to a depressurized state, drives the vacuum source 51, and controls the operation of the vacuum source 51 to control the pressure in the vacuum chamber 5.
After the pressure in the vacuum chamber 5 reaches a predetermined pressure, a pressure bonding step of bonding the display panel 2 to the front panel 1 is performed. As shown in fig. 23, the control device 30 sets the control valve 31 in a pressurized state, and increases the pressure in the space surrounded by the diaphragm 7, the sealing member 6, and the installation table 63. In the pressure bonding step, a pressure difference is generated between the pressure in the vacuum chamber 5 and the pressure in the space surrounded by the diaphragm 7, the sealing member 6, and the installation table 63, and the diaphragm 7 deforms. Thereby, the diaphragm 7 not covered with the mask 9 is deformed, and the volume of the space surrounded by the diaphragm 7, the sealing member 6, and the mounting table 63 increases.
As a result, the distance between the elastic body 27 and the fixing portion 11 of the stage 10 is reduced, and the display panel 2 attached to the elastic body 27 is brought into contact with the front panel 1.
After the pressure bonding process, in the peeling process, the control valve 31 is switched from the pressurized state to the depressurized state to peel the elastic body 27 from the display panel 2. After the elastic body 27 is peeled off from the display panel 2, the pressure in the vacuum chamber 5 is restored to the atmospheric pressure.
Next, as shown in fig. 24, an elastic body 28 is attached to the stage 10 side of the diaphragm 7 at a position different from the elastic body 27 shown in fig. 23. The periphery of the elastic body 28 is covered with a mask 9 formed of a plate material having higher rigidity than the diaphragm 7, such as metal. The display panel 2 is mounted to the elastic body 28 via an adhesive layer. The above-described depressurizing step is performed after the preparation step.
After the pressure in the vacuum chamber 5 reaches a predetermined pressure, a pressure bonding step of bonding the display panel 2 to the front panel 1 is performed. As shown in fig. 24, the control device 30 sets the control valve 31 in a pressurized state, and increases the pressure in the space surrounded by the diaphragm 7, the sealing member 6, and the installation table 63. In the pressure bonding step, a pressure difference is generated between the pressure in the vacuum chamber 5 and the pressure in the space surrounded by the diaphragm 7, the sealing member 6, and the installation table 63, and the diaphragm 7 deforms. Thereby, the diaphragm 7 not covered with the mask 9 is deformed, and the volume of the space surrounded by the diaphragm 7, the sealing member 6, and the mounting table 63 increases.
As a result, the distance between the elastic body 28 and the fixing portion 11 of the stage 10 is reduced, and the display panel 2 attached to the elastic body 28 is brought into contact with the front panel 1.
After the pressure bonding process, the control valve 31 is switched from the pressurized state to the depressurized state to peel the elastic body 28 from the display panel 2 in the peeling process. After the elastic body 28 is peeled off from the display panel 2, the pressure in the vacuum chamber 5 is restored to the atmospheric pressure.
Next, as shown in fig. 25, an elastic body 29 is attached to the stage 10 side of the diaphragm 7 at a position different from the elastic body 27 shown in fig. 23 and the elastic body 28 shown in fig. 24. The periphery of the elastic body 29 is covered with a mask 9 formed of a plate material having higher rigidity than the diaphragm 7, such as metal. The display panel 2 is mounted to the elastic body 29 via an adhesive layer. The above-described depressurizing step is performed after the preparation step.
After the pressure in the vacuum chamber 5 reaches a predetermined pressure, a pressure bonding step of bonding the display panel 2 to the front panel 1 is performed. As shown in fig. 25, the control device 30 sets the control valve 31 in a pressurized state, and increases the pressure in the space surrounded by the diaphragm 7, the sealing member 6, and the installation table 63. In the pressure bonding step, a pressure difference is generated between the pressure in the vacuum chamber 5 and the pressure in the space surrounded by the diaphragm 7, the sealing member 6, and the installation table 63, and the diaphragm 7 deforms. Thereby, the diaphragm 7 not covered with the mask 9 is deformed, and the volume of the space surrounded by the diaphragm 7, the sealing member 6, and the mounting table 63 increases.
As a result, the distance between the elastic body 29 and the fixing portion 11 of the stage 10 is reduced, and the display panel 2 attached to the elastic body 29 is brought into contact with the front panel 1.
After the pressure bonding process, the control valve 31 is switched from the pressurized state to the depressurized state so as to peel the elastic body 29 from the display panel 2 in the peeling process. After the elastic body 29 is peeled off from the display panel 2, the pressure in the vacuum chamber 5 is restored to the atmospheric pressure. Then, the display device 3 shown in fig. 1 and 2 is taken out.
As described above, the crimping apparatus 100 includes the vacuum chamber 5, the stage 10, and the attaching unit 8. The stage 10 is disposed in the vacuum chamber 5, and has a shape that is overlapped and fixed with the 1 st surface 1F of the front panel 1 and that is along the 1 st surface 1F. The attaching units 8 deform the elastic diaphragms 7 by the internal pressure, respectively. The distance between one of the elastic bodies 27, 28, 29 and the stage 10 varies in accordance with the deformation of the diaphragm 7. Thereby, the display panel 2 attached to the elastic bodies 27, 28, 29 is pressure-bonded to the 2 nd surface 1R of the front panel 1.
According to this configuration, the same operational effects as those of embodiment 1 are obtained. In addition, in the pressure bonding apparatus 100 according to embodiment 5, the display panel 2 can be attached to an arbitrary position in accordance with the sizes of the front panel 1.
Further, other operational effects of the embodiments described in the present embodiment are, of course, understood to be obtained by the present invention, as will be apparent from the description of the present specification or as will be appropriately understood by those skilled in the art.
Claims (12)
1. A crimping apparatus for bonding a plurality of plate-like 2 nd workpieces smaller than a plate-like 1 st workpiece having a curved surface portion to the 1 st workpiece in a manner arranged to be spaced apart from each other, the crimping apparatus comprising:
a vacuum chamber;
a stage disposed in the vacuum chamber for placing the 1 st workpiece thereon; and
a plurality of elastic bodies which are more elastic than the carrier,
the carrier comprises a fixing part with a curved fixing surface, the fixing part is used for fixing the 1 st workpiece,
the elastic body is provided with a pressed surface on the surface opposite to the carrying platform, the pressed surface is a curved surface along the fixed surface,
the 1 st workpiece is fixed in a state of being closely attached to the fixing surface,
a plurality of the 2 nd workpieces are respectively mounted in such a manner as to be held by the pressure receiving surfaces of the respective plurality of the elastic bodies,
and bringing the elastic body and the carrier closer together, so that the plurality of 2 nd workpieces are respectively pressed against the 1 st workpiece from the center to both ends of the 2 nd workpiece.
2. A crimping apparatus as claimed in claim 1, wherein,
the curvature of the curved surface portion of the 1 st workpiece is fixed in the whole surface.
3. A crimping apparatus as claimed in claim 1, wherein,
the 1 st workpiece has a plurality of curved surface portions, and the curvature of each curved surface portion is different.
4. A crimping apparatus as claimed in claim 1, wherein,
the 1 st workpiece has a plurality of curved surface portions including a concave curved surface portion and a convex curved surface portion.
5. A crimping apparatus as claimed in claim 1, wherein,
the device is also provided with a lifting device, and the distance between the elastic body and the carrying platform is changed by driving the lifting device.
6. A crimping apparatus as claimed in claim 1, wherein,
the carrier plate is inserted between the elastic body and the carrier plate, and the 2 nd workpiece attached to the carrier plate and the carrier plate are clamped between the elastic body and the carrier plate.
7. The crimping device as claimed in any one of claims 1 to 6, wherein,
the 1 st workpiece is a light-transmitting front panel, and the 2 nd workpiece is a display panel.
8. A method for manufacturing a display device, in which a plurality of display panels smaller than a light-transmissive front panel having a curved surface portion are bonded to the front panel so as to be arranged in a spaced-apart relation, the method comprising:
A preparation step of fixing the front panel to a carrier having a curved fixing surface opposed to a plurality of elastic bodies in a state of being in close contact with the fixing surface, and attaching each of the plurality of display panels to a carrier interposed between the elastic bodies having a pressure receiving surface along the fixing surface on the surface opposed to the carrier and the front panel; and
and a pressure bonding step of, after the preparation step, holding the carrier sheet and the display panel between the pressure receiving surface of the elastic body and the carrier, and bringing the elastic body and the carrier closer together to each other, thereby pressure bonding the display panels to the front panel from the center to both ends of the display panel.
9. A method for manufacturing a display device, in which a plurality of display panels smaller than a light-transmissive front panel having a curved surface portion are bonded to the front panel so as to be arranged in a spaced-apart relation, the method comprising:
a preparation step of mounting each of the plurality of display panels on a pressure receiving surface of each of a plurality of elastic bodies, and mounting the front panel on a stage having a curved fixing surface opposed to the elastic bodies; and
And a pressure bonding step of, after the preparation step, holding the display panel between the pressure receiving surface of the elastic body and the stage, and bringing the elastic body and the stage closer together to each other, thereby pressure bonding the display panels to the front panel from the center to both ends of the display panel, wherein the pressure receiving surface is a curved surface along the fixing surface.
10. The method for manufacturing a display device according to claim 8 or 9, wherein,
the curvature of the curved surface portion of the front panel is fixed in the entire surface.
11. The method for manufacturing a display device according to claim 8 or 9, wherein,
the front panel has a plurality of curved surface portions, each of which has a different curvature.
12. The method for manufacturing a display device according to claim 8 or 9, wherein,
the front panel has a plurality of curved portions including a concave curved portion and a convex curved portion.
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| JP2018-121261 | 2018-06-26 | ||
| JP2018121261A JP7166807B2 (en) | 2018-06-26 | 2018-06-26 | Crimping device |
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| CN113968066A (en) * | 2020-07-24 | 2022-01-25 | 盟立自动化股份有限公司 | Laminating device and compound curved surface laminating tool |
| CN114255662B (en) * | 2022-02-11 | 2023-05-12 | 武汉天马微电子有限公司 | Attaching jig and attaching method of flexible display panel |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110646960A (en) | 2020-01-03 |
| JP2020001223A (en) | 2020-01-09 |
| JP7425156B2 (en) | 2024-01-30 |
| JP7166807B2 (en) | 2022-11-08 |
| JP2023015124A (en) | 2023-01-31 |
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