Method for manufacturing glass film laminate and method for cleaning glass sheet

Abstract

The present application provides a method for manufacturing a glass film laminate capable of handling a small-sized glass film that cannot be handled by a conventional cleaning device and supporting a glass to thereby manufacture a small-sized glass film laminate, without changing the interval of the handling rollers of the conventional cleaning device. The method for manufacturing a glass film laminate (1) includes: a first laminating step (S2) of laminating a glass film (2) to a first carrier glass (4) to thereby manufacture a first laminate (6); a second laminating step (S3) of laminating a support glass (3) to a second carrier glass (5) to thereby manufacture a second laminate (7); a first cleaning step (S4) of cleaning the first laminate (6); a second cleaning step (S5) of cleaning the second laminate (7); a first peeling step (S6) of peeling the glass film (2) from the first laminate (6); a second peeling step (S7) of peeling the support glass (3) from the second laminate (7); and a third laminating step (S8) of joining a cleaned surface of the glass film (2) to a cleaned surface of the support glass (3) to thereby manufacture the glass film laminate (1).

Description

Technical Field

[0001] This invention relates to a method for manufacturing glass film laminates and a method for cleaning glass plates. Background Technology

[0002] In recent years, there has been a growing demand for thinner and more flexible substrates and cover glass used in electronic devices such as flat panel displays. To impart flexibility to glass substrates, thinning the glass substrate is effective, leading to the development of glass films with thicknesses below 200 μm.

[0003] Various manufacturing-related processes, such as processing and cleaning, are performed on glass substrates. However, when glass substrates are made thinner, glass, being a brittle material, can break due to stress changes, posing a challenge in handling these processes during the manufacturing of various electronic devices.

[0004] Therefore, to improve the processability of thinner glass films, a glass film laminate (see Patent Document 1) has been proposed, in which the glass film is stacked on a supporting glass. According to this glass film laminate, even when using a single glass film that lacks strength and rigidity, the high rigidity of the supporting glass makes it easy to process the glass film laminate as a whole during processing. Furthermore, the glass film can be peeled off from the supporting glass after processing. If the thickness of the glass film laminate is the same as the thickness of a conventional glass substrate, electronic devices can be manufactured using conventional electronic device production lines for glass substrates.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent Document 1: International Publication No. 2015 / 056602 Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] In order to laminate a glass film onto a support glass, the surfaces where the support glass and the glass film are to be bonded need to be clean, and both the support glass and the glass film need to be cleaned before bonding. When the dimensions of various glass film laminates are required according to the size of various electronic devices, it has been found that when manufacturing small-sized glass film laminates for small electronic devices, the following problems arise if the cleaning equipment used in the production line of large glass film laminates is used.

[0010] Inside the cleaning device, a conveying device with multiple conveying rollers spaced at certain intervals is used to move the glass film and support the glass in order to allow the cleaning fluid to flow smoothly.

[0011] However, when using existing cleaning equipment for large glass film laminates, the spacing between the multiple transport rollers is too wide, causing smaller glass films and support glass pieces with shorter spacing to detach, resulting in problems such as inability to transport them. Therefore, a new cleaning equipment with narrower spacing between transport rollers must be prepared to clean smaller glass films and support glass, leading to large-scale changes.

[0012] The object of this invention is to provide a method for manufacturing a glass film laminate that, without changing the existing cleaning apparatus with a relatively wide spacing of the transfer rollers, can handle small-sized glass films that cannot be handled by the existing cleaning apparatus, and a method for manufacturing a glass film laminate that supports the glass and enables the fabrication of small-sized glass film laminates. Furthermore, the object of this invention is to provide a method for cleaning small-sized glass plates that, without changing the existing cleaning apparatus with a relatively wide spacing of the transfer rollers, can handle small-sized glass plates that cannot be handled by the existing cleaning apparatus.

[0013] Solution for solving the problem

[0014] This invention relates to a method for manufacturing a glass film laminate, wherein the glass film laminate has a glass film laminated on a supporting glass. The method comprises: a preparation step, preparing the glass film, the supporting glass, a first carrier glass with an area larger than the glass film, and a second carrier glass with an area larger than the supporting glass; a first lamination step, laminating the glass film onto the first carrier glass to form a first laminate; a second lamination step, laminating the supporting glass onto the second carrier glass to form a second laminate; a first cleaning step, cleaning the glass film side of the first laminate; a second cleaning step, cleaning the supporting glass side of the second laminate; a first peeling step, peeling the glass film from the first laminate after the first cleaning step; a second peeling step, peeling the supporting glass from the second laminate after the second cleaning step; and a third lamination step, bonding the cleaned surfaces of the glass film after the first peeling step and the supporting glass after the second peeling step together to form the glass film laminate.

[0015] Based on the above structure, by placing a small-sized glass film and a supporting glass on a large-sized first carrier glass and a second carrier glass, even with an existing cleaning device with a wide spacing between the transport rollers, transport can be carried out without changing the cleaning device, and a small-sized glass film laminate can be produced.

[0016] In the above-described method for manufacturing a glass film laminate, preferably, the cleaning apparatus used in the first cleaning step and the second cleaning step comprises: a plurality of transport rollers that transport the first laminate and the second laminate while supporting their lower surfaces; a cleaning member that cleans the upper surfaces of the first laminate and the second laminate; a first pair of clamping rollers disposed upstream of the cleaning member in the transport direction and transporting the first laminate and the second laminate while clamping their upper and lower surfaces; and a second pair of clamping rollers disposed downstream of the cleaning member in the transport direction and transporting the first laminate and the second laminate while clamping their upper and lower surfaces, wherein the distance between the first pair of clamping rollers and the second pair of clamping rollers is less than or equal to the length of the first carrier glass and the second carrier glass in the transport direction.

[0017] According to the above structure, during the cleaning performed by the cleaning member, at least one of the first clamping roller pair and the second clamping roller pair can clamp the first stack and the second stack, so that during the cleaning performed by the cleaning member, the first stack and the second stack can be fixed by any clamping roller pair.

[0018] Furthermore, in the above-described method for manufacturing a glass film laminate, it is preferable that, in the first laminate, a portion of the glass film protrudes from the upstream end of the transport direction of the first carrier glass, and in the second laminate, a portion of the supporting glass protrudes from the upstream end of the transport direction of the second carrier glass.

[0019] According to the above structure, in the first and second peeling processes, by holding and peeling off the protruding portions of the glass film and the supporting glass, the glass film and the supporting glass can be easily peeled off. Furthermore, since the protruding portions are on the upstream side of the transport direction, they will not get caught on the cleaning components.

[0020] Furthermore, in the above-described method for manufacturing glass film laminates, it is preferable that the first laminate is manufactured by laminating multiple glass films at different positions on one side of the first carrier glass, and the second laminate is manufactured by laminating multiple supporting glasses at different positions on one side of the second carrier glass.

[0021] Based on the above structure, multiple glass films and multiple supporting glass can be cleaned at once, thus resulting in high production efficiency.

[0022] In addition, the present invention discloses a method for manufacturing a glass film laminate, wherein the glass film laminate has a glass film laminated on a support glass. The method for manufacturing the glass film laminate is characterized by comprising: a preparation step, preparing a glass film, a support glass, and a carrier glass with an area larger than the glass film and the support glass; a first lamination step, laminating the glass film and the support glass at different positions on one side of the carrier glass to form a laminate; a cleaning step, cleaning the glass film and the support glass side of the laminate; a peeling step, peeling the glass film and the support glass from the laminate after the cleaning step; and a second lamination step, bonding the cleaned surfaces of the glass film and the support glass after the peeling step together to form the glass film laminate.

[0023] Based on the above structure, by placing a small-sized glass film and a supporting glass on a large-sized carrier glass, even existing cleaning devices with wide-spaced transfer rollers can be used for transfer without changing the cleaning device, enabling the production of small-sized glass film laminates. Furthermore, the glass film and supporting glass can be cleaned in one step, resulting in high production efficiency.

[0024] In addition, the glass plate cleaning method of the present invention includes: a preparation step, preparing a plurality of glass plates and a carrier glass with an area larger than the glass plates; a stacking step, stacking a plurality of glass plates at different positions on one side of the carrier glass to form a laminate; a cleaning step, cleaning the glass plate side of the laminate; and a peeling step, peeling the glass plates from the laminate after the cleaning step.

[0025] Based on the above structure, by carrying multiple small glass plates on a large carrier glass, even existing cleaning devices with wide-spaced transfer rollers can be used without modifying the cleaning device, enabling the cleaning of small glass plates. Furthermore, multiple glass plates can be cleaned at once, resulting in high production efficiency.

[0026] Invention Effects

[0027] According to the glass film laminate manufacturing method of the present invention, small-sized glass films and supporting glass that cannot be handled by existing cleaning apparatuses with wider spacing of the transport rollers can be handled without changing the existing cleaning apparatus, thereby enabling the production of small-sized glass film laminates. Furthermore, according to the glass plate cleaning method of the present invention, small-sized glass plates that cannot be handled by existing cleaning apparatuses with wider spacing of the transport rollers can be handled without changing the existing cleaning apparatus, thereby enabling the cleaning of small-sized glass plates. Attached Figure Description

[0028] Figure 1 This figure illustrates the manufacturing method of the glass film laminate according to the first embodiment.

[0029] Figure 2 This is a top view of the first and second laminates of the first embodiment.

[0030] Figure 3 These are top views of the first and second stacked bodies of the modified examples.

[0031] Figure 4 This is a schematic diagram of the cleaning apparatus according to the first embodiment.

[0032] Figure 5 This figure illustrates the manufacturing method of the glass film laminate according to the second embodiment. Detailed Implementation

[0033] Hereinafter, the manufacturing method of the glass film laminate 1 of the present invention will be described using the first embodiment and the second embodiment as examples.

[0034] [First Implementation Method]

[0035] like Figure 1 As shown, the manufacturing method of the first embodiment includes: a preparation step S1, preparing a glass film 2, a support glass 3, a first carrier glass 4 with an area larger than the glass film 2, and a second carrier glass 5 with an area larger than the support glass 3; a first lamination step S2, laminating the glass film 2 onto the first carrier glass 4 to form a first laminate 6; a second lamination step S3, laminating the support glass 3 onto the second carrier glass 5 to form a second laminate 7; a first cleaning step S4, cleaning the glass film 2 side of the first laminate 6; a second cleaning step S5, cleaning the support glass 3 side of the second laminate 7; a first peeling step S6, peeling the glass film 2 from the first laminate 6 after the first cleaning step S4; a second peeling step S7, peeling the support glass 3 from the second laminate 7 after the second cleaning step S5; and a third lamination step S8, bonding the cleaned surfaces of the glass film 2 after the first peeling step S6 and the support glass 3 after the second peeling step S7 together to form a glass film laminate 1.

[0036] According to this manufacturing method, the cleaning device 8 used in the first cleaning step S4 and the second cleaning step S5 (see reference) remains unchanged. Figure 4 It can transport small-sized glass film 2 and supporting glass 3 that cannot be transported by the cleaning device 8, and can produce small-sized glass film laminates 1.

[0037] [Preparation Process]

[0038] In the preparation step S1, silicate glass, silica glass, borosilicate glass, alkali-free glass, etc., can be used as the material for the prepared glass film 2. The thickness of the glass film 2 is preferably 300 μm or less. It should be noted that the thickness of the glass film 2 is more preferably 200 μm or less, and even more preferably 100 μm or less. From the viewpoint of ensuring the strength of the glass film 2, the thickness of the glass film 2 is preferably 5 μm or more.

[0039] The glass film 2 is preferably transported by the cleaning device 8 in a transport direction A with a length L1 that is less than the interval D1 of the transport rollers 81 (refer to...). Figure 4 There are no particular limitations on the shape of the glass film 2; for example, it can be rectangular or square. In this embodiment, the glass film 2 is a square with a length of 100 mm and a width of 100 mm, and a thickness of 100 μm.

[0040] The material for the prepared support glass 3 is the same as that for the glass film 2, and can be silicate glass, silica glass, borosilicate glass, alkali-free glass, etc. Regarding the support glass 3, it is preferable to use a material whose coefficient of thermal expansion at 30–380°C differs from that of the glass film 2 by 5 × 10⁻⁶. -7 Glass with a temperature range of / ℃ or less. From the viewpoint of suppressing the difference in expansion rate, the supporting glass 3 is preferably made of the same material as the glass film 2.

[0041] The thickness of the supporting glass 3 is preferably 300 μm or more. It should be noted that the thickness of the supporting glass 3 is more preferably 300 to 700 μm, and even more preferably 300 to 500 μm. Thus, the supporting glass 3 can support the glass film 2, and the breakage of the glass film 2 during peeling off from the supporting glass 3 can be effectively suppressed.

[0042] The supporting glass 3 is preferably larger than the glass film 2, and its length L2 in the transport direction A during transport by the cleaning device 8 is less than the interval D1 of the transport rollers 81. The shape of the supporting glass 3 is not particularly limited; for example, it can be rectangular or square. In this embodiment, the supporting glass 3 is a square with a length of 104 mm and a width of 104 mm, and a thickness of 500 μm.

[0043] The materials used for the first carrier glass 4 and the second carrier glass 5 can be silicate glass, silica glass, borosilicate glass, alkali-free glass, etc., similar to those used for the glass film 2 and the supporting glass 3. The thickness of the first carrier glass 4 and the second carrier glass 5 is preferably 300 μm or more, similar to that of the supporting glass 3. It should be noted that the thickness of the first carrier glass 4 and the second carrier glass 5 is more preferably 300–700 μm, and even more preferably 300–500 μm.

[0044] Therefore, the first carrier glass 4 can be used to support the glass film 2, and damage to the glass film 2 caused when it is peeled off from the first carrier glass 4 can be effectively suppressed. In addition, the second carrier glass 5 can be used to support the support glass 3, and damage to the support glass 3 caused when it is peeled off from the second carrier glass 5 can be effectively suppressed.

[0045] The lengths L3 and L4 of the first carrier glass 4 and the second carrier glass 5 during transport in the transport direction A of the cleaning device 8 are preferably greater than or equal to the interval D1 of the transport rollers 81 and greater than or equal to the interval D2 of the first clamping roller pair 85 and the second clamping roller pair 86 of the cleaning device 8. The shape of the first carrier glass 4 and the second carrier glass 5 is not particularly limited; for example, they can be rectangular or square. In this embodiment, the first carrier glass 4 and the second carrier glass 5 are rectangular with a length of 370 mm and a width (transport direction A) of 470 mm, and a thickness of 500 μm. Thus, the area of ​​the first carrier glass 4 is larger than that of the glass film 2, and the area of ​​the second carrier glass 5 is larger than that of the supporting glass 3.

[0046] [First layer stacking process]

[0047] like Figure 1 as well as Figure 2 As shown, in the first lamination process S2, a glass film 2 is laminated onto a first carrier glass 4 to form a first laminate 6. The lower surface 2a of the glass film 2 in the first laminate 6 is a contact surface in the first lamination process S2 and becomes a retaining surface in the third lamination process S8. The contact surface is the side that faces and contacts the first carrier glass 4. The retaining surface is the side on which manufacturing-related processes such as component formation are performed in the manufacture of products such as electronic devices. On the other hand, the upper surface 2b of the glass film 2 in the first laminate 6 is a cleaning surface that constitutes part of the upper surface 6b of the first laminate 6. The cleaning surface is the side that is cleaned in the first cleaning process S4.

[0048] The lower surface 4a of the first carrier glass 4 in the first laminate 6 is the transport surface constituting the lower surface 6a of the first laminate 6. The transport surface is supported by the transport roller 81 (see reference 81) during transport by the cleaning device 8. Figure 4 On the other hand, a portion of the upper surface 4b of the first carrier glass 4 in the first laminate 6 constitutes a portion of the upper surface 6b of the first laminate 6, and another portion of the upper surface 4b is the contact surface. The contact surface is the side of the glass film 2 that is opposite to and in contact with it.

[0049] When the glass film 2 and the first carrier glass 4 are tightly bonded in the first lamination process S2, a first laminate 6 is formed by fixing them in contact without adhesive to a degree that allows for peeling. This phenomenon is believed to be due to the hydrogen bonding of hydroxyl groups formed on the contact surfaces of the glass film 2 and the first carrier glass 4, thus fixing them in contact with each other. Alternatively, it can be believed to be due to water molecules present at the interface between the glass film 2 and the first carrier glass 4 being trapped and forming hydrogen bonds, thus fixing them in contact with each other.

[0050] In the first laminate 6, a portion of the glass film 2 protrudes from the end of the first carrier glass 4, forming a protrusion 2c. This end is the upstream end in the transport direction when transported by the cleaning device 8. The protrusion amount of the protrusion 2c can be set, for example, to 1 to 10 mm. In the first cleaning step S4, the protrusion 2c is located on the upstream side in the transport direction, so that even if the cleaning member 82 is reversed (in... Figure 1 (Clockwise), and the protruding part 2c will not get stuck on the cleaning component 82 (refer to...) Figure 4 Furthermore, in the first peeling process S6, the glass film 2 can be easily peeled off by holding the protruding portion 2c of the glass film 2 and peeling it off.

[0051] It should be noted that in the first laminate 6, the position of the glass film 2 relative to the first carrier glass 4 is not limited to the position described above. For example, the glass film 2 can also be laminated in the center of the first carrier glass 4.

[0052] Alternatively, as a variation of the first layer 6, it could also be Figure 3 The first laminate 61 is shown as described. That is, the first laminate 61 is made by laminating multiple glass films 2 at different positions on one side (upper surface 4b) of the first carrier glass 4. As a result, multiple glass films 2 can be cleaned at once in the first cleaning process S4, thus improving production efficiency.

[0053] It should be noted that by setting the first carrier glass 4 to a larger area, more glass films 2 can be stacked. Furthermore, the stacking position of the glass films 2 relative to the first carrier glass 4 is not particularly limited, but is preferably as follows: Figure 3 As shown, the protruding part 2c is formed at that position.

[0054] [Second layer stacking process]

[0055] like Figure 1 as well as Figure 2As shown, in the second lamination process S3, a second laminate 7 is formed by laminating a support glass 3 onto a second carrier glass 5. The lower surface 3a of the support glass 3 in the second laminate 7 is a contact surface. The contact surface is the side that faces and contacts the second carrier glass 5. On the other hand, the upper surface 3b of the support glass 3 in the second laminate 7 is a cleaning surface that forms part of the upper surface 7b of the second laminate 7. The cleaning surface is the side that is cleaned in the second cleaning process S5.

[0056] The lower surface 5a of the second carrier glass 5 in the second laminate 7 is a transport surface constituting the lower surface 7a of the second laminate 7. The transport surface is the side supported by the transport roller 81 when transported by the cleaning device 8. On the other hand, a portion of the upper surface 5b of the second carrier glass 5 in the second laminate 7 constitutes a portion of the upper surface 7b of the second laminate 7, and another portion of the upper surface 5b is a contact surface. The contact surface is the side that is opposite to and in contact with the support glass 3.

[0057] When the support glass 3 and the second carrier glass 5 are pressed together in the second lamination process S3, as described above, the second laminate 7 is formed by fixing them in contact without adhesive to a degree that allows for peeling. Similar to the first laminate 6, in the second laminate 7, a portion of the support glass 3 protrudes from the end of the second carrier glass 5, forming a protruding portion 3c. This end is the upstream end in the transport direction when transported by the cleaning device 8. The protrusion amount of the protruding portion 3c can be set, for example, to 1 to 10 mm. Through this protruding portion 3c, the same effect as the protruding portion 2c described above is obtained.

[0058] It should be noted that in the second laminate 7, the stacking position of the support glass 3 relative to the second carrier glass 5 is not limited to the position described above. For example, the support glass 3 can also be stacked in the center of the second carrier glass 5.

[0059] Alternatively, as a variation of the second layer 7, it could also be... Figure 3 The second laminate 71 is shown as described. That is, the second laminate 71 is made by stacking multiple support glass 3 at different positions on one side (upper surface 5b) of the second carrier glass 5. As a result, multiple support glass 3 can be cleaned at once in the second cleaning process S5, thus improving production efficiency.

[0060] It should be noted that by setting the second carrier glass 5 to a larger area, more support glass 3 can be stacked. Furthermore, the stacking position of the support glass 3 relative to the second carrier glass 5 is not particularly limited, but is preferably as follows: Figure 3 As shown, the protruding part 3c is formed at that position.

[0061] [First Cleaning Step]

[0062] The first cleaning step S4 is a process of cleaning the glass film 2 side of the first laminate 6. Through the first cleaning step S4, foreign matter on the upper surface 2a of the glass film 2 can be removed, reducing the possibility of air bubbles being generated between the glass film 2 and the supporting glass 3 in the third lamination step S8.

[0063] Figure 4 This is a side view of the main part of the cleaning apparatus 8 used in the first cleaning process S4. The cleaning apparatus 8 includes multiple conveying rollers 81, cleaning components 82, multiple cleaning nozzles 83, a pair of air knives 84, a first pair of clamping rollers 85, and a second pair of clamping rollers 86.

[0064] The transport roller 81 is a roller that transports the first laminate 6 while supporting its lower surface 6a. The transport roller 81 is arranged at intervals D1 throughout the entire area from the starting point to the ending point of the cleaning device 8, except between the first clamping roller pair 85 and the second clamping roller pair 86. The transport roller 81 has a shaft portion 811 that rotates in the transport direction A and a plurality of disc bodies 812 fixed to the shaft portion 811 at equal intervals. A resin-made annular cushioning member (not shown) is mounted on the outer periphery of the disc bodies 812. By inputting a driving force from a drive source (not shown) to the shaft portion 811, the shaft portion 811 and the disc bodies 812 rotate in the transport direction A, and the first laminate 6 supported on the disc bodies 812 is transported in the transport direction A.

[0065] The cleaning member 82 is a member for cleaning the upper surface 6b of the first laminate 6. The cleaning member 82 is positioned above the transport roller 81. As the cleaning member 82, for example, a cleaning brush such as a brush roller or a cleaning sponge such as a sponge roller can be used. The cleaning member 82 of this embodiment is composed of a brush roller having a shaft portion 821 that rotates in the opposite direction to the transport direction A and a cylindrical brush 822 fixed to the shaft portion 821. By inputting a driving force from a drive source (not shown) to the shaft portion 821, the shaft portion 821 and the brush 822 rotate in the opposite direction to the transport direction A, and the brush 822 contacts the upper surface 6b of the first laminate 6 to scrape off foreign objects.

[0066] The cleaning nozzle 83 is a component that sprays cleaning agent. The cleaning nozzle 83 is configured above the transport roller 81 and is capable of spraying cleaning agent between the first clamping roller pair 85 and the cleaning component 82, and between the cleaning component 82 and the second clamping roller pair 86. The cleaning agent sprayed from the cleaning nozzle 83 is applied to the upper surface 6b of the first laminate 6. Foreign matter on the upper surface 6b of the first laminate 6 is easily removed by the cleaning agent.

[0067] The air knife 84 is a component that ejects compressed air. The air knife 84 is positioned opposite each other downstream of the second clamping roller pair 86 in the transport direction, at a position above and below the transport roller 81. The compressed air ejected from the air knife 84 blows across the upper surface 6b and lower surface 6a of the first laminate 6. This removes cleaning agent droplets remaining on the upper surface 6b and lower surface 6a of the first laminate 6. It should be noted that the air knife 84 positioned below the transport roller 81 can also be omitted.

[0068] The first clamping roller pair 85 is positioned upstream of the cleaning member 82 in the transport direction, and is a roller pair that transports the first laminate 6 while clamping its upper surface 6b and lower surface 6a. It should be noted that no transport roller 81 is disposed between the first clamping roller pair 85 and the cleaning member 82. The first clamping roller pair 85 includes: an upper roller 851, which is positioned above the transport roller 81 and abuts against the upper surface 6b of the first laminate 6; and a lower roller 852, which is positioned at the same height as the transport roller 81 and abuts against the lower surface 6a of the first laminate 6.

[0069] The upper roller 851 and the lower roller 852 have a shaft portion 853 that rotates in the transport direction A and a plurality of rubber rollers 854 fixed at equal intervals to the shaft portion 853. It should be noted that the rubber roller 854 may also be a relatively long roller arranged along the shaft portion 853. In addition, the rubber roller 854 may also be other rollers using resin or the like, as long as it can clamp the first laminate 6 without damaging it.

[0070] By inputting a driving force from a drive source (not shown) to the shaft 853, the shaft 853 and the rubber roller 854 rotate in the transport direction A. The first stack 6 is held by the upper and lower rubber rollers 854 and transported in the transport direction A. The first stack 6 is transported while being held by the first clamping roller pair 85, so that the first stack 6 is not pushed back by the cleaning member 82 rotating in the opposite direction of the transport direction A before it reaches the second clamping roller pair 86.

[0071] The second clamping roller pair 86 is positioned downstream of the cleaning member 82 in the transport direction, and is a roller pair that transports the first laminate 6 while simultaneously clamping its upper surface 6b and lower surface 6a. It should be noted that no transport roller 81 is disposed between the cleaning member 82 and the second clamping roller pair 86. The second clamping roller pair 86 has the same structure as the first clamping roller pair 85, that is, it has an upper roller 861 and a lower roller 862. Furthermore, the upper roller 861 and the lower roller 862 have a shaft portion 863 and a plurality of rubber rollers 864.

[0072] A driving force from a drive source (not shown) is input to the shaft 863, causing the shaft 863 and the rubber roller 864 to rotate in the transport direction A. The first stack 6 is transported in the transport direction A while being held by the upper and lower rubber rollers 864. The first stack 6 is transported while being held by the second clamping roller pair 86, so that after the first stack 6 passes through the first clamping roller pair 85, the first stack 6 will not be pushed back by the cleaning member 82 rotating in the opposite direction of the transport direction A, but will be transported instead.

[0073] As described above, no transport roller 81 is arranged between the first clamping roller pair 85 and the second clamping roller pair 86. Therefore, the gap D2 between the first clamping roller pair 85 and the second clamping roller pair 86 tends to be wider than the gap D1 of the transport roller 81. Even when the length L1 of the glass film 2 and the length L2 of the supporting glass 3 are longer than the gap D1 of the transport roller 81, it is still difficult to transport the glass film 2 and the supporting glass 3 individually when the length L1 of the glass film 2 and the length L2 of the supporting glass 3 are shorter than the gap D2 between the first clamping roller pair 85 and the second clamping roller pair 86.

[0074] However, as in this embodiment, by stacking a first carrier glass 4 whose length L3 in the transport direction A is longer than the intervals D1 and D2, and a second carrier glass 5 whose length L4 in the transport direction A is longer than the intervals D1 and D2, the glass film 2 and the support glass 3 can be transported.

[0075] That is, the lengths L3 and L4 of the first carrier glass 4 and the second carrier glass 5 in the transport direction A are greater than or equal to the distance D2 between the first clamping roller pair 85 and the second clamping roller pair 86, thereby enabling the first laminate 6 to be clamped simultaneously by the first clamping roller pair 85 and the second clamping roller pair 86. Therefore, the first laminate 6 can be transferred from the first clamping roller pair 85 to the second clamping roller pair 86 without detachment. In other words, the first laminate 6 being cleaned by the cleaning component 82 is fixed by either the first clamping roller pair 85 or the second clamping roller pair 86 because it is clamped by at least one of the roller pairs 85 and 86. Therefore, even with a conventional cleaning device 8 where the distance D2 between the first clamping roller pair 85 and the second clamping roller pair 86 is relatively wide, small-sized glass films 2 and supporting glass 3 can be transported without modifying the cleaning device 8.

[0076] It should be noted that, from the viewpoint of improving the cleaning effect, the first cleaning step S4 may also include a step of rinsing with pure water before the above-described steps and rinsing with alkaline ionized water after the above-described steps. The same apparatus as the cleaning device 8 described above can also be used in these steps.

[0077] [Second Cleaning Step]

[0078] The second cleaning step S5 is a process of cleaning the supporting glass 3 side of the second laminate 7. The second cleaning step S5 can be performed in the same way as the first cleaning step S4 using the cleaning device 8 described above, so detailed description is omitted.

[0079] It should be noted that the cleaning methods used in the first cleaning step S4 and the second cleaning step S5 are not limited to the methods described above, as long as the method of transporting the glass product using transfer rollers is employed. General methods used in cleaning glass products can be used. For example, ultrasonic cleaning, photochemical cleaning using ultraviolet light or ozone, and physical cleaning using plasma can be used individually or in appropriate combinations. In particular, in the first cleaning step S4 and the second cleaning step S5, while the first laminate 6 and the second laminate 7 are held by the first clamping roller pair 85 and the second clamping roller pair 86, the cleaning member 82 is used for wiping and cleaning. However, if rinsing with cleaning water is performed without using the cleaning member 82, the first clamping roller pair 85 and the second clamping roller pair 86 can be omitted.

[0080] [First stripping process]

[0081] like Figure 1 As shown, the first peeling step S6 is the process of peeling the glass film 2 off the first laminate 6 after the first cleaning step S4. In the first peeling step S6, the glass film 2 can be easily peeled off from the first carrier glass 4 by holding the protruding portion 2c of the glass film 2 and peeling it off.

[0082] [Second stripping process]

[0083] like Figure 1 As shown, the second peeling step S7 is the process of peeling the support glass 3 from the second laminate 7 after the second cleaning step S5. In the second peeling step S7, the support glass 3 is easily peeled from the second carrier glass 5 by holding the protruding portion 3c of the support glass 3 and peeling it off.

[0084] It should be noted that the first carrier glass 4 after the first peeling process S6 and the second carrier glass 5 after the second peeling process S7 can be reused in the first lamination process S2 and the second lamination process S3.

[0085] [Third layer stacking process]

[0086] like Figure 1As shown, the third lamination process S8 is a process of bonding the cleaned surface of the glass film 2 after the first peeling process S6 with the cleaned surface of the support glass 3 after the second peeling process S7 to form a glass film laminate 1. In the third lamination process S8, the glass film 2 is placed on a flat bonding table 9 with the cleaned surface (upper surface 2b) facing upwards, and the support glass 3 is tightly bonded to the glass film 2 with the cleaned surface (upper surface 3b) facing downwards. Thus, the glass film 2 and the support glass 3, like the first laminate 6 and the second laminate 7 described above, are in fixed contact without adhesive and to a degree that allows for peeling, thereby forming the glass film laminate 1.

[0087] It should be noted that the third lamination process S8 can also be performed under reduced pressure. This reduces the number of air bubbles generated between the glass film 2 and the supporting glass 3.

[0088] [Second Implementation]

[0089] Next, the manufacturing method of the second embodiment will be described. Components that are the same as those used in the first embodiment will be labeled with the same reference numerals, and detailed descriptions thereof will be omitted.

[0090] like Figure 5 As shown, the manufacturing method of the second embodiment includes: a preparation step S11, preparing a glass film 2, a support glass 3, and a carrier glass 12 with an area larger than the glass film 2 and the support glass 3; a first lamination step S12, laminating the glass film 2 and the support glass 3 at different positions on one side of the carrier glass 12 to form a laminate 13; a cleaning step S13, cleaning the glass film 2 and support glass 3 sides of the laminate 13; a peeling step S14, peeling the glass film 2 and the support glass 3 from the laminate 13 after the cleaning step S13; and a second lamination step S15, bonding the cleaned surfaces of the glass film 2 and the support glass 3 after the peeling step S14 together to form a glass film laminate 1.

[0091] According to this manufacturing method, the same effects as those of the manufacturing method in the first embodiment are obtained. Furthermore, it allows for the cleaning of both the glass film 2 and the supporting glass 3 in one step, thus resulting in high production efficiency.

[0092] [Preparation Process]

[0093] In preparation step S11, the glass film 2 and the supporting glass 3 prepared are the same as in the first embodiment. Furthermore, the carrier glass 12 prepared is the same as the first carrier glass 4 in the first embodiment.

[0094] [First layer stacking process]

[0095] In the first lamination process S12, a laminate 13 is formed by laminating a glass film 2 and a support glass 3 at different positions on one side of a carrier glass 12. This is a carrier glass obtained by using the first carrier glass 4 and the second carrier glass 5 in the first embodiment as a single carrier glass 12.

[0096] In the laminate 13, a portion of the glass film 2 and the supporting glass 3 protrudes from the end of the carrier glass 12, forming protruding portions 2c and 3c. This end is the upstream end in the transport direction when transported by the cleaning device 8. It should be noted that the stacking position of the glass film 2 and the supporting glass 3 relative to the carrier glass 12 in the laminate 13 is not limited to the position described above. For example, the glass film 2 and the supporting glass 3 may be stacked side by side in the center of the carrier glass 12.

[0097] Furthermore, by setting the carrier glass 12 to a larger area, more glass films 2 and supporting glass 3 can be stacked. That is, one or more glass films 2 and supporting glass 3 can be stacked on a single carrier glass. By stacking more glass films 2 and supporting glass 3 on a single carrier glass, the cleaning process becomes more efficient.

[0098] [Cleaning Process]

[0099] Cleaning step S13 is a process of cleaning the glass film 2 and the supporting glass 3 side of the laminate 13. Cleaning step S13 can be performed using the cleaning apparatus 8 of the first embodiment and in the same manner as the first cleaning step S4 of the first embodiment. By cleaning one laminate 13 using cleaning step S13, foreign matter on the upper surface 2b of the glass film 2 and the upper surface 3b of the supporting glass 3 can be removed in one step.

[0100] [Stripping Process]

[0101] The peeling process S14 is the process of peeling the glass film 2 and the support glass 3 from the laminate 13 after the cleaning process S13. In the peeling process S14, the protruding portions 2c of the glass film 2 and 3c of the support glass 3 are held and peeled off separately, making peeling easy. It should be noted that the carrier glass 12 after the peeling process S14 can be reused in the first lamination process S12.

[0102] [Second layer stacking process]

[0103] The second lamination process S15 is a process of bonding the cleaned surface of the glass film 2 after the peeling process S14 with the cleaned surface of the supporting glass 3 to form a glass film laminate 1. The second lamination process S15 can be performed in the same way as the third lamination process S8 in the first embodiment.

[0104] In the above embodiments, processing the glass film 2 as a single unit is difficult, therefore it is necessary to construct a glass film laminate 1 to facilitate processing. Conversely, when using a glass plate of the same size as the glass film 2 but thicker, which can be processed as a single unit, it is not necessary to construct a glass film laminate. That is, there is no need to support the glass 3; it is sufficient to clean the protective surface of the glass plate.

[0105] Therefore, the cleaning method for the glass plate includes the following steps: a preparation step, preparing multiple glass plates and a carrier glass with an area larger than the glass plates; a stacking step, stacking multiple glass plates at different positions on one side of the carrier glass to create a laminate; a cleaning step, cleaning the glass plate side of the laminate; and a peeling step, peeling the glass plates from the laminate after the cleaning step. The preparation step, stacking step, cleaning step, and peeling step can be achieved by replacing the glass film 2 and the support glass 3 with glass plates in the preparation step S11, the first stacking step S12, the cleaning step S13, and the peeling step S14 of the second embodiment. It should be noted that in this embodiment, the guaranteed surface of the glass plate becomes the upper surface side of the glass plate stacked in the laminate.

[0106] Based on the cleaning method for this glass plate, the cleaning device 8 used in the cleaning process (see reference) remains unchanged. Figure 4 It can handle small glass plates that cannot be handled by the cleaning device 8, and can clean small glass plates. In addition, it can clean multiple glass plates at once, so the production efficiency is good.

[0107] It should be noted that in this specification, the component laminated on the carrier glass is described as a glass plate, taking into account the materials, size, and application, as it can be processed as a single unit. Therefore, even if the glass plate is within the thickness range of the aforementioned glass film 2, it can be used as a glass plate if it can be processed as a single unit.

[0108] Explanation of reference numerals in the attached figures

[0109] 1 Glass film laminate

[0110] 2. Glass film

[0111] 3-support glass

[0112] 4. First carrier glass

[0113] 5. Second carrier glass

[0114] 6 First layer

[0115] 7. Second layer stack

[0116] 8 Cleaning devices

[0117] 12 carrier glass

[0118] 13-layer stack

[0119] 81 conveying rollers

[0120] 82 Cleaning Components

[0121] 85 First clamping roller pair

[0122] 86 Second clamping roller pair

[0123] A. Direction of transport

[0124] D1 interval

[0125] D2 interval

[0126] S1 Preparation Process

[0127] S2 First Layer Stacking Process

[0128] S3 Second Layer Stacking Process

[0129] S4 First Cleaning Process

[0130] S5 Second Cleaning Process

[0131] S6 First Stripping Process

[0132] S7 Second Stripping Process

[0133] S8 Third Layer Stacking Process

[0134] S11 Preparation Process

[0135] S12 First Layer Stacking Process

[0136] S13 Cleaning Process

[0137] S14 Stripping Process

[0138] S15 Second Layer Stacking Process.

Claims

1. A method for manufacturing a glass film laminate, wherein the glass film laminate has a glass film laminated on a supporting glass. The method for manufacturing the glass film laminate is characterized by comprising: The preparation process includes preparing the glass film, the supporting glass, a first carrier glass with an area larger than the glass film and a flat shape, and a second carrier glass with an area larger than the supporting glass and a flat shape. In the first lamination process, the glass film is laminated on the upper surface of the first carrier glass to form a first laminate. In the second lamination process, the supporting glass is laminated on the upper surface of the second carrier glass to create a second laminate. The first cleaning step involves cleaning the glass film side of the first laminate. The second cleaning process involves cleaning the supporting glass side of the second laminate. The first peeling process involves peeling the glass film from the first laminate after the first cleaning process. The second peeling process involves peeling the supporting glass from the second laminate after the second cleaning process. as well as In the third lamination process, the glass film after the first peeling process is bonded to the cleaned surface of the supporting glass after the second peeling process to form the glass film laminate. The cleaning apparatus used in the first cleaning process and the second cleaning process includes: Multiple transport rollers, which transport materials while supporting the lower surfaces of the first and second laminates; and The cleaning component cleans the upper surfaces of the first and second laminates and rotates in the opposite direction to the transport direction. In the first laminate, a portion of the glass film protrudes from the upstream end in the transport direction of the first carrier glass. In the second laminate, a portion of the supporting glass protrudes from the upstream end of the second carrier glass in the transport direction.

2. The method for manufacturing the glass film laminate according to claim 1, characterized in that, The cleaning apparatus used in the first cleaning process and the second cleaning process further includes: A first pair of clamping rollers is positioned upstream in the transport direction of the cleaning member and transports the material while clamping the upper and lower surfaces of the first laminate and the upper and lower surfaces of the second laminate; and The second pair of clamping rollers is positioned downstream of the cleaning member in the transport direction and transports the material while clamping the upper and lower surfaces of the first and second laminates. The distance between the first clamping roller pair and the second clamping roller pair is less than or equal to the length of the first carrier glass and the second carrier glass in the transport direction.

3. The method for manufacturing the glass film laminate according to claim 1 or 2, characterized in that, The first laminate is fabricated by stacking multiple glass films at different positions on one side of the first carrier glass. The second laminate is made by stacking multiple support glass layers at different positions on one side of the second carrier glass.

4. A method for manufacturing a glass film laminate, wherein the glass film laminate has a glass film laminated on a supporting glass. The method for manufacturing the glass film laminate is characterized by comprising: The preparation process includes preparing a glass film, a supporting glass, and a carrier glass with an area larger than the glass film and the supporting glass and which is flat. In the first lamination process, the glass film and the supporting glass are laminated at different positions on the upper surface of the carrier glass to create a laminate. The cleaning process involves cleaning the glass film and the supporting glass side of the laminate. The peeling process involves peeling the glass film and the supporting glass from the laminate after the cleaning process; as well as In the second lamination process, the glass film after the peeling process and the cleaned surface of the supporting glass are bonded together to form the glass film laminate. The cleaning apparatus used in the cleaning process includes: Multiple transport rollers, which transport the material while supporting the lower surface of the laminate; and The cleaning component cleans the upper surface of the laminate and rotates it in the opposite direction to the transport direction. In the laminate, a portion of the glass film and a portion of the supporting glass protrude from the upstream end of the carrier glass in the transport direction.

5. A method for cleaning a glass plate, characterized in that, The cleaning method for the glass plate includes: Preparation process: Prepare multiple glass plates and a flat carrier glass with an area larger than the glass plates; The lamination process involves stacking multiple glass plates at different positions on the upper surface of the carrier glass to create a laminate. The cleaning process includes cleaning the glass plate side of the laminate; and The peeling process involves peeling the glass plate from the laminate after the cleaning process. The cleaning apparatus used in the cleaning process includes: Multiple transport rollers, which transport the material while supporting the lower surface of the laminate; and The cleaning component cleans the upper surface of the laminate and rotates it in the opposite direction to the transport direction. In the laminate, a portion of each of the plurality of glass plates protrudes from the upstream end of the carrier glass in the transport direction.

Images