KR102561496B1 - Apparatus for processing ultra thin glass and method for processing ultra thin glass - Google Patents

Abstract

The present invention relates to an ultra-thin glass processing device and an ultra-thin glass processing method, and more particularly, to an ultra-thin glass processing device and ultra-thin glass processing method for laminating a plurality of ultra-thin glasses.
An ultra-thin glass processing apparatus according to an embodiment of the present invention includes a stage supporting ultra-thin glass; a conveying unit for conveying the ultra-thin glass onto the stage; an adhesive providing unit providing adhesive on the ultra-thin glass supported on the stage; and a pressing unit providing a pressing force to the plurality of ultra-thin glasses stacked with the adhesive interposed therebetween, wherein the pressing unit may include an elastic membrane that presses the ultra-thin glass by elastic deformation.

Description

Ultra-thin glass processing device and ultra-thin glass processing method {Apparatus for processing ultra thin glass and method for processing ultra thin glass}

The present invention relates to an ultra-thin glass processing device and an ultra-thin glass processing method, and more particularly, to an ultra-thin glass processing device and ultra-thin glass processing method for laminating a plurality of ultra-thin glasses.

In recent years, display products have continued to change and innovate to achieve rapid technological development. We continued to develop products that are easy to carry and convenient by diversifying usability and evolving in product shape. Future product changes will also be constantly developed to reflect these multifunction and product shape simplicity and convenience, and the goal is bendable, foldable, and rollable ( rollable) form of display products will continue to develop.

In order to realize flexible display products such as bendable, foldable, and rollable displays, display parts that can maintain product performance while being bent are first and foremost required. come. However, high-strength film products have disadvantages in that they can only be used up to 100,000 times or less in a bending test, and their transmittance is 96% or less. Accordingly, in recent years, there has been a focus on the development of ultra-thin glass (UTG), which is very thin, can be folded and unfolded more than 100,000 times, and has a transmittance of 98% or more.

Such ultra-thin glass (UTG) is too thin, less than 150 μm, so it is difficult to handle during processing such as cutting or edge processing that cuts into a predetermined size or shape, and it is easily broken. there is

Accordingly, there is a demand for a method and apparatus for processing ultra-thin glass capable of stably manufacturing such ultra-thin glass without breaking defects according to various product sizes and uses.

Korean Registered Patent Publication No. 10-1334406

The present invention relates to an ultra-thin glass processing apparatus and an ultra-thin glass processing method for laminating a plurality of ultra-thin glasses while preventing adhesive leakage.

An ultra-thin glass processing apparatus according to an embodiment of the present invention includes a stage supporting ultra-thin glass; a conveying unit for conveying the ultra-thin glass onto the stage; an adhesive providing unit providing adhesive on the ultra-thin glass supported on the stage; and a pressing unit providing a pressing force to the plurality of ultra-thin glasses stacked with the adhesive interposed therebetween, wherein the pressing unit may include an elastic membrane that presses the ultra-thin glass by elastic deformation.

A first light source unit irradiating light in a lateral direction of the plurality of ultra-thin glasses, and the adhesive providing unit may provide the first adhesive cured by the first light source unit to an edge portion of the ultra-thin glass.

A first light source driver for moving the first light source unit in a stacking direction of the plurality of ultra-thin glasses may be further included.

A second light source unit provided on the stage and irradiating light; and the adhesive providing unit may provide the second adhesive cured by the second light source unit to the central portion of the ultra-thin glass.

The pressing unit may further include a body portion to which an edge portion of the elastic membrane is fixed and supported, and the elastic membrane may be inflated by a fluid supplied between a surface of the body portion and the body portion.

The fluid may be supplied to the central portion of the elastic membrane.

It may further include a gap adjusting unit configured to move at least one of the stage and the pressing unit to adjust a gap between the stage and the pressing unit.

A processing unit for processing the ultra-thin glass laminate in which the plurality of ultra-thin glasses are stacked may be further included.

The ultra-thin glass may have a thickness of 10 to 150 μm, and the ultra-thin glass laminate may be formed by stacking 2 to 50 sheets of the ultra-thin glass.

An ultra-thin glass processing method according to another embodiment of the present invention includes supporting a first ultra-thin glass on a stage; providing an adhesive on the first ultra-thin glass supported on the stage; providing a second ultra-thin glass on the adhesive; and providing a pressing force on the second ultra-thin glass using a pressing unit, wherein the providing of the pressing force may include elastically deforming the elastic membrane of the pressing unit.

The process of providing the pressing force further includes a process of bringing the elastic film into contact with the second ultra-thin glass, and the process of elastically deforming the elastic film is the process of supplying fluid between the body of the pressing unit and the elastic film to form the elastic film. It can be done by inflating.

In the process of elastically deforming the elastic membrane, the fluid may be supplied to the central portion of the elastic membrane.

The process of providing the adhesive includes providing a first adhesive to an edge portion of the first ultra-thin glass or the second ultra-thin glass, wherein the ultra-thin glass is laminated with the first ultra-thin glass and the second ultra-thin glass. A process of curing the first adhesive by irradiating light in the lateral direction of the body; may further include.

The process of curing the first adhesive may be performed before the process of elastically deforming the elastic film or concurrently with the process of elastically deforming the elastic film.

The method may further include moving a first light source unit for irradiating light in a lateral direction of the ultra-thin glass laminate in a lamination direction of the ultra-thin glass laminate.

The process of providing the adhesive further includes providing a second adhesive to the central portion of the first ultra-thin glass or the second ultra-thin glass, and after the process of curing the first adhesive, light is emitted from the top of the stage. A process of curing the second adhesive by irradiating; may further include.

The method may further include a step of narrowing a gap between the stage and the pressing part after elastically deforming the elastic membrane.

The method may further include processing an ultra-thin glass laminate in which the first ultra-thin glass and the second ultra-thin glass are stacked.

An ultra-thin glass processing apparatus according to an embodiment of the present invention is a laminate of ultra-thin glass (UTG) by bonding a plurality of ultra-thin glasses through an adhesive between a plurality of ultra-thin glasses (UTG) through an adhesive supply unit. can be formed, thereby facilitating processing such as cutting and edge processing for ultra-thin glass, and ultra-thin glass in the desired size and shape without breaking defects to suit the use of various products. Glass can be treated.

In addition, a plurality of ultra-thin glasses can be simultaneously processed through the ultra-thin glass laminate, and accordingly, processing of ultra-thin glass having excellent processing uniformity such as size can be performed, and the number of times of processing can be the number of ultra-thin glasses processed. The process time (tact time) for processing the ultra-thin glass can be shortened.

In addition, by pressurizing the ultra-thin glass through elastic deformation of the elastic membrane by fluid supply, a uniform pressure can be provided over the entire surface of the ultra-thin glass, and accordingly, the height (or thickness) of the ultra-thin glass laminate can be uniform throughout. A uniform pressure can be provided on the plurality of ultra-thin glass as a whole, and leakage of the ultra-thin glass out of the ultra-thin glass while the adhesive interposed between the plurality of ultra-thin glasses is spread by the pressing force can be suppressed or prevented.

In addition, the first adhesive provided on the edge of the ultra-thin glass is first cured by irradiating light from the side of the plurality of ultra-thin glass through the first light source unit before or during pressing the ultra-thin glass, thereby curing the ultra-thin glass. It is possible to prevent a portion of the first adhesive provided on the edge portion from being uncured, and to effectively prevent leakage of the second adhesive spreading from the central portion to the periphery between the plurality of ultra-thin glasses.

In addition, by moving the first light source unit in the stacking direction of the plurality of ultra-thin glasses, the newly applied and uncured first adhesive may be irradiated with light according to the number of stacked layers of the plurality of ultra-thin glasses, and thus the uncured portion. It is possible to effectively cure the first adhesive of any height (or number of layers) without In addition, it is also possible to prevent deterioration in adhesive strength due to overcuring of the first adhesive by continuously irradiating light to the already cured first adhesive.

1 is a schematic cross-sectional view showing an ultra-thin glass processing apparatus according to an embodiment of the present invention.
Figure 2 is a conceptual diagram for explaining the provision of the first adhesive and the second adhesive of the adhesive providing unit according to an embodiment of the present invention.
3 is a conceptual diagram illustrating a second light source unit according to an embodiment of the present invention;
Figure 4 is a conceptual diagram for explaining the cutting process by the processing unit according to an embodiment of the present invention.
5 is a flow chart showing an ultra-thin glass processing method according to another embodiment of the present invention.
6 is a view sequentially showing some of ultra-thin glass processing methods according to another embodiment of the present invention.
7 is a view sequentially showing the remaining part of the ultra-thin glass processing method according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, only these embodiments will complete the disclosure of the present invention, and will fully cover the scope of the invention to those skilled in the art. It is provided to inform you. During the description, the same reference numerals are assigned to the same components, and the drawings may be partially exaggerated in size in order to accurately describe the embodiments of the present invention, and the same numerals refer to the same elements in the drawings.

1 is a schematic cross-sectional view showing an ultra-thin glass processing apparatus according to an embodiment of the present invention.

Referring to FIG. 1 , an ultra-thin glass processing apparatus 100 according to an embodiment of the present invention includes a stage 110 supporting the ultra-thin glass 10; a transfer unit 120 for transferring the ultra-thin glass 10 onto the stage 110; an adhesive providing unit 130 providing adhesive 20 on the ultra-thin glass 10 supported on the stage 110; and a pressing unit 140 providing a pressing force on the plurality of ultra-thin glasses 10 stacked with the adhesive 20 interposed therebetween.

The stage 110 can support ultra-thin glass (UTG, 10), and the ultra-thin glass (UTG) laminate 50 is formed by interposing an adhesive 20 between the plurality of ultra-thin glasses 10. During the formation of the ultra-thin glass 10 of the lowermost layer can be fixed so as not to move. For example, the stage 110 may support and fix the ultra-thin glass 10 on a porous surface. At this time, the thickness of the ultra-thin glass 10 (Thickness ; T) or less. Here, when the size of the pore(s) is not constant, the width of the largest pore may be less than or equal to the thickness of the ultra-thin glass 10 .

The transfer unit 120 may transfer the ultra-thin glass 10 onto the stage 110, and may support and transfer one of the opposing surfaces of the ultra-thin glass 10. For example, the transfer unit 120 may support and transfer the ultra-thin glass 10 in a suction fixing method, and may be configured as a transfer robot. At this time, the porosity of the transfer unit 120 for suction fixation may also have a width (or diameter) less than or equal to the thickness of the ultra-thin glass 10 like the stage 110 . Here, the transfer unit 120 may transfer (or provide) the ultra-thin glass 10 of the lowest layer in contact with the stage 110, or may transfer the ultra-thin glass 10 onto the adhesive 20 provided on the ultra-thin glass 10. It may be provided, and it is sufficient if the ultra-thin glass 10 can be transferred on the stage 110 so that the surface facing the stage 110 is exposed. Meanwhile, the ultra-thin glass 10 of the lowest layer may be supported on the stage 110 by a device other than the transfer unit 120 and provided to a process position by moving the stage 110 .

The adhesive providing unit 130 may provide the adhesive 20 on the ultra-thin glass 10 supported on the stage 110, and is in contact with the ultra-thin glass 10 exposed on the top of the stage 110 to form the adhesive 20. ), and the plurality of ultra-thin glasses 10 can be bonded through the adhesive 20. At this time, the adhesive providing unit 130 may apply and provide the liquid adhesive 20 having viscosity on the ultra-thin glass 10, and may apply the liquid adhesive 20 such as resin to the ultra-thin glass 10. It can be printed on. Here, the adhesive 20 may be photo-cured by light such as UV (Ultra-Violet), and when cured, adhesive force may be improved.

For example, the adhesive 20 may be rapidly cured when light of a predetermined wavelength is irradiated, and the light of the predetermined wavelength may be ultraviolet (UV) or visible light of a specific wavelength range. At this time, the adhesive 20 may be a light cure adhesive or an ultra-violet ray adhesive that is cured by ultraviolet rays of a wavelength of 254 nm or 365 nm, and a photoinitiator is included in the adhesive 20 ( Photoinitiator) may be contained.

The pressing unit 140 may provide a pressing force on the plurality of ultra-thin glasses 10 stacked with the adhesive 20 interposed therebetween, and bring the plurality of ultra-thin glasses 10 facing (or in contact with) close to each other so that the adhesive ( 20) can be uniformly diffused between the plurality of ultra-thin glasses 10. For example, the pressing unit 140 may be provided on the stage 110 and gradually pressurize the upper ultra-thin glass 10 exposed on the stage 110 so that the liquid adhesive 20 is formed into a plurality of ultra-thin glass. It can be uniformly diffused between the glass 10.

Since the ultra-thin glass (UTG, 10) is very thin, less than about 150 μm, a cutting process for cutting into a predetermined size or shape or an edge process for trimming the edge surface of the ultra-thin glass 10 are used. During processing, the left/right shaking was inevitably severe due to difficulty in handling, which made precise processing difficult and damage to the ultra-thin glass 10, such as being easily broken.

Therefore, in the present invention, the ultra-thin glass laminate 50 is formed by laminating a plurality of ultra-thin glasses 10 through the adhesive 20, thereby increasing the thickness to a thickness exceeding 150 μm, and cutting or edging, etc. During processing, gripping may be facilitated, and stable gripping may be performed to enable precise processing, and it may be possible to prevent the ultra-thin glass 10 from being damaged during processing. In addition, a plurality of ultra-thin glass 10 can be processed at one time, and accordingly, processing of ultra-thin glass 10 having excellent processing uniformity such as size can be performed, and the number of cutting processes can be reduced to reduce ultra-thin glass. The process time for processing the glass 10 may be shortened.

Also, the pressing unit 140 may include an elastic membrane 141 that presses the ultra-thin glass 10 by elastically deforming it. The elastic film 141 has elasticity and can be deformed by an external force, and can press the ultra-thin glass 10 by this deformation and can selectively come into contact with the ultra-thin glass 10 . For example, the elastic film 141 may be made of a rubber material, has a balloon (or bag) shape, and can be expanded by supplying a fluid such as air. can be pressed while pushing towards the stage. At this time, the elastic film 141 has a certain degree (or predetermined) of cushioning and softness to prevent damage (or defects) such as scratches to the ultra-thin glass 10. In addition, the adhesive 20 can be spread with a constant thickness between the plurality of ultra-thin glasses 10 .

Here, the contact surface (or pressing surface) of the elastic membrane 141 with the ultra-thin glass 10 may include a curved surface, the entire contact surface with the ultra-thin glass 10 may form one curved surface, or the ultra-thin glass 10 ) and a part of the contact surface may form a curved surface. At this time, the elastic membrane 141 may have a circular shape with a curved surface, or may be elastically deformed to form a curved surface and then brought into contact with the ultra-thin glass 10 . In addition, the elastic membrane 141 may have a curved shape as the central portion sags due to its own weight as the edges (or both sides) are fixed. If the contact surface of the elastic membrane 141 with the ultra-thin glass 10 has a curved surface, the central portion of the ultra-thin glass 10 can be pressed first, and the adhesive 20 does not gather in the central portion between the plurality of ultra-thin glass 10. It is possible to spread the adhesive 20 from the central portion to the edge (portion) between the plurality of ultra-thin glasses 10 so that they do not form (or pool), and thus the plurality of ultra-thin glasses 10 are bonded at a uniform thickness (or height). (or conjugated). In addition, the dam or seal part of the edge (part) of the ultra-thin glass 10 is supported, so that the pressure is not well transmitted when the contact surface with the ultra-thin glass 10 is flat Ultra-thin glass 10 Pressing force can be well transmitted to the center of the .

Figure 2 is a conceptual diagram for explaining the provision of the first adhesive and the second adhesive of the adhesive providing unit according to an embodiment of the present invention, Figure 2 (a) shows the provision of the first adhesive, Figure 2 (b) Indicates the provision of a second adhesive.

Referring to FIGS. 1 and 2 , the ultra-thin glass processing apparatus 100 according to the present invention may further include a first light source unit 151 radiating light from the plurality of ultra-thin glasses 10 in a lateral direction. The first light source unit 151 can irradiate light in the lateral direction of the plurality of ultra-thin glasses 10, and uses the adhesive 20 provided on the edges (parts) between the plurality of ultra-thin glasses 10 (that is, the first light source unit 151). 1 The adhesive can be cured (or temporarily cured). For example, the first light source unit 151 may be provided toward the side (or side) of the adhesive 20 exposed between the plurality of ultra-thin glasses 10 in which the adhesive 20 is interposed, and a predetermined wavelength (eg, For example, the adhesive 20 provided at the edge (portion) between the plurality of ultra-thin glasses 10 may be cured by irradiating light of the first wavelength. At this time, while the adhesive 20 is cured, the adhesive force between the plurality of ultra-thin glasses 10 may be improved. Here, the adhesive 20 provided on the edge (part) between the plurality of ultra-thin glasses 10 prevents the adhesive 20 interposed between the plurality of ultra-thin glasses 10 from leaking out of the ultra-thin glass 10. Alternatively, the dam part or the seal part may be formed to prevent it, and the viscosity (degree) may be high.

In the present invention, the upper ultra-thin glass 10 is pressed through the first light source unit 151, and the plurality of ultra-thin glass 10 It is possible to (temporarily) harden the adhesive 20 provided at the edges (parts) between them, and form a dam that does not collapse under pressure to prevent the spreading adhesive 20 from leaking out of the ultra-thin glass 10. In addition, it is possible to prevent gaps between the plurality of ultra-thin glasses 10 by closely adhering the plurality of ultra-thin glasses 10 to each other.

In addition, by irradiating light from the side of the plurality of ultra-thin glasses 10 with the first light source unit 151, the plurality of ultra-thin glasses are formed inward from the side surface of the outermost adhesive 20 (ie, the side surface of the first adhesive). The side of the outermost adhesive 20 that can cure the adhesive 20 provided on the edge (part) between (10) and must have sufficient rigidity without deformation to effectively perform the function of the dam or the seal. can be cured effectively. That is, the side surface of the outermost adhesive 20 is effectively hardened, can sufficiently perform the role of a dam (or wall) without deformation, and can have sufficient rigidity not to collapse under pressure.

Also, the adhesive providing unit 130 may provide the first adhesive 21 cured by the first light source unit 151 to the edge of the ultra-thin glass 10 . The adhesive providing unit 130 may provide the adhesive 20 by separating the edge portion and the central portion of the ultra-thin glass 10, and the adhesive 20 may adhere to the ultra-thin glass 10 at the edge portion of the ultra-thin glass 10. The dam part or the seal part can be formed to suppress or prevent leakage, and the dam part or the seal part diffuses in the space surrounding the central part of the ultra-thin glass 10 to stably pass between the plurality of ultra-thin glasses 10. It is possible to provide an adhesive 20 that adheres to. Here, the first adhesive 21 may be the adhesive 20 forming the dam or the seal, and a highly viscous adhesive 20 may be used to effectively form the dam or the seal.

For example, the adhesive providing unit 130 may include a first adhesive dispensing unit 131 providing the first adhesive 21 to the edge of the ultra-thin glass 10, and the first adhesive dispensing unit 131 ), the liquid first adhesive 21 having viscosity may be applied on the edge of the ultra-thin glass 10 and provided. Here, the first adhesive discharge unit 121 prints the first adhesive 21 along (or around) the edge of the ultra-thin glass 10 so that the adhesive 20 (ie, the second adhesive and/or the first adhesive 21) The dam portion or the seal portion may be formed to suppress or prevent the adhesive from leaking out of the ultra-thin glass 10 . At this time, the first adhesive 21 may be cured or temporarily cured by light of a predetermined wavelength irradiated from the first light source unit 151 .

The ultra-thin glass processing apparatus 100 according to the present invention may further include a first light source driving unit 155 that moves the first light source unit 151 in the stacking direction of the plurality of ultra-thin glasses 10 .

The first light source driver 155 may move the first light source unit 151 in the stacking direction of the plurality of ultra-thin glasses 10, and according to the height (or number of layers) of the ultra-thin glass 10, the first light source unit ( 151) may be adjusted, and the first light source unit 151 is placed between the (outside) side of the stage 110 and the side of the plurality of ultra-thin glasses 10 (ie, the side of the first adhesive). It is also possible to perform an on/off function of light of a predetermined wavelength for curing the first adhesive 21 by reciprocating (or scanning) in. Accordingly, the first adhesive 21 of all heights (or number of layers) can be effectively cured without an uncured portion by irradiating light of a predetermined wavelength by concentrating on (only) the first adhesive 21 to be cured. In addition, by irradiating light to the first adhesive 21 only when light irradiation is necessary through the movement of the first light source unit 151, light is continuously irradiated to the first adhesive 21a that has already been cured, and thus the first adhesive (21) can also be prevented from deteriorating adhesive strength due to over-curing.

Meanwhile, the first light source unit 151 may scan the side of the first adhesive 21 through the first light source driving unit 155 to cure the first adhesive 21 .

3 is a conceptual diagram illustrating a second light source unit according to an embodiment of the present invention.

Referring to FIG. 3 , the ultra-thin glass processing apparatus 100 according to the present invention may further include a second light source unit 152 provided on the stage 110 to emit light.

The second light source unit 152 may be provided on the stage 110 and irradiate light to cure the adhesive 20 (ie, the second adhesive) provided in the central portion between the plurality of ultra-thin glasses 10 ( or temporary hardening). For example, the second light source unit 152 may be provided from the top of the stage 110 toward the upper ultra-thin glass 10, and irradiates light of a predetermined wavelength (eg, the second wavelength) to generate a plurality of light sources. The adhesive 20 provided in the central portion between the ultra-thin glass 10 can be cured. At this time, the second light source unit 152 may include a surface light source or a bar-type light source, and the entire surface of the adhesive 20 provided in the central portion between the plurality of ultra-thin glasses 10 is covered at once (or simultaneously) with the surface light source. ), or may be cured while scanning the entire surface of the adhesive 20 provided in the central portion between the plurality of ultra-thin glasses 10 with a bar-type light source. As the adhesive 20 provided in the central portion between the plurality of ultra-thin glasses 10 is cured through the second light source unit 152 , adhesion between the plurality of ultra-thin glasses 10 may be improved. Here, the adhesive 20 provided in the central portion between the plurality of ultra-thin glasses 10 is applied to the plurality of ultra-thin glasses 10 in the space surrounded by the dam or the seal for effective bonding between the plurality of ultra-thin glasses 10. It may have low viscosity so that it can be effectively diffused between the glass 10.

Also, the adhesive providing unit 130 may provide the second adhesive 22 cured by the second light source unit 152 to the central portion of the ultra-thin glass 10 . Here, the second adhesive 22 may be the adhesive 20 that spreads in the space surrounded by the dam part or the seal part by pressurization by the pressing part 140, and is effectively diffused between the plurality of ultra-thin glasses 10. An adhesive 20 having lower viscosity than the first adhesive 21 may be used.

For example, the adhesive providing unit 130 may include a second adhesive dispensing unit 132 providing the second adhesive 22 to the central portion of the ultra-thin glass 10, and the second adhesive dispensing unit 132 Through this, it is possible to provide by applying the liquid second adhesive 22 having viscosity on the central portion of the ultra-thin glass 10 . Here, the second adhesive discharge unit 122 may print the second adhesive 22 on the central portion of the ultra-thin glass 10, and the empty space where the adhesive 20 (ie, the first adhesive) is not provided. The second adhesive 22 may be printed at a position where the second adhesive 22 can be well spread by the pressure by the pressing unit 140 instead of filling the second adhesive 22 with the second adhesive 22 . At this time, the second adhesive 22 may be cured or temporarily cured by light of a predetermined wavelength irradiated from the second light source unit 152 .

On the other hand, in the second light source unit 152, the second adhesive 22 provided in the central portion between the plurality of ultra-thin glasses 10 is effectively ( Alternatively, the second adhesive 22 between the plurality of ultra-thin glasses 10 may be cured after being spread evenly.

In addition, the first adhesive 21 and the second adhesive 22 may be different, and at least one of viscosity, material (or composition), density, and material state (eg, liquid, gel, solid) may be different. can For example, the first adhesive 21 and the second adhesive 22 may have different viscosities, and thus may have different materials and/or densities. At this time, the wavelength at which the adhesive 20 can be cured may vary depending on the material (or composition), density and/or thickness.

In addition, the first adhesive 21 and/or the second adhesive 22 may be cured by ultraviolet (UV) or visible light of a specific wavelength range, and the first light source unit 151 and/or the second light source unit 152 may be cured. may include an ultraviolet irradiation unit for irradiating ultraviolet rays of an appropriate wavelength range. Here, when the first adhesive 21 and the second adhesive 22 are different, the curing wavelength may be different, and the first light source unit 151 irradiates light of the first wavelength to cure the first adhesive 21. and the second light source unit 152 may irradiate light of a second wavelength different from the first wavelength to cure the second adhesive 22 .

That is, the dam part or the seal part is formed at the edge of the ultra-thin glass 10 with the first adhesive 21 having high viscosity, and the second adhesive having low viscosity so as to be easily spread in the space surrounded by the dam part or the seal part ( 22), the material, density and / or thickness may vary between the first adhesive 21 and the second adhesive 22, and each position through the first light source unit 151 and the second light source unit 152 The first and second wavelengths suitable for curing of the first adhesive 21 or the second adhesive 22 are irradiated, respectively, so that the first adhesive 21 and the second adhesive 22 are uniformly cured as a whole. It can be done. For example, the first wavelength may be a longer wavelength than the second wavelength, the first light source unit 151 emits light of the first wavelength, which is a relatively long wavelength, and the second light source unit 152 emits light having a relatively long wavelength. It is possible to irradiate light of the second wavelength, which is a short wavelength.

The pressing portion 140 may further include a body portion 142 in which an edge portion of the elastic membrane 141 is fixed and supported. The body portion 142 may support the elastic membrane 141 , and may fix and support an edge portion of the elastic membrane 141 . Through this, a gap (or space) through which fluid can be supplied may be formed between the surface of the body portion 142 and the elastic membrane 141 . In addition, a path through which fluid can be supplied may be formed between the surface of the body portion 142 and the elastic membrane 141 in the body portion 142, and the fluid supplied to the passage may be discharged again. And, the fluid supplied to the separate discharge passage may be discharged. In addition, the body portion 142 fixes the edge of the elastic membrane 141 so that the central portion of the elastic membrane 141 can sag due to its own weight, and accordingly, the central portion of the elastic membrane 141 can be bent over the ultra-thin glass 10 at the top. , and can hold the upper ultra-thin glass 10 so that it does not move between the stage 110 and the stage 110 by the weight of the elastic film 141 . Through this, it is possible to prevent the ultra-thin glass 10 from moving while curing the first adhesive 21 from the outermost side to the inside using the first light source unit 151 . That is, while the first adhesive 21 is cured by the curing direction (or curing sequence) in which the first adhesive 21 is cured from the outermost side to the inside, the upper ultra-thin glass 10 can move, but the elastic film ( This can be prevented by holding the ultra-thin glass 10 on the upper side by its own weight.

In addition, the elastic membrane 141 may be expanded by fluid supplied between the surface and the body portion 142 . Through this, the ultra-thin glass 10 may be pressed toward the stage 110 while the elastic film 141 is in contact with the ultra-thin glass 10 . For example, the pressing unit 140 may further include a fluid supply unit 143 that expands the elastic membrane 141 by supplying fluid between the surface of the body portion 142 and the elastic membrane 141 . The fluid supply unit 143 may expand the elastic membrane 141 by supplying fluid between the surface of the body 142 and the elastic membrane 141, and the stage 110 may be moved through the expansion of the elastic membrane 141. It is possible to press the ultra-thin glass 10 toward.

Here, the fluid may include a compressive fluid such as air, and the elastic membrane 141 presses the ultra-thin glass 10 with a uniform pressure on the entire surface so that the plurality of ultra-thin glasses 10 are uniformly distributed over the entire surface. can be joined.

On the other hand, the fluid may include an incompressible fluid such as water, and the incompressible fluid refers to a fluid whose density is maintained constant even when the volume changes (or there is no volume change due to volume change). When the incompressible fluid is used, the fluid maintains a constant density so that the expansion force (or deformation force) caused by the fluid can be uniformly and well transmitted to the entire surface of the ultra-thin glass 10 . That is, in the case of using the incompressible fluid, there is no difference in density between the contacted and compressed portion and the non-contacted and unstressed portion, so that the expansion force by the fluid can be uniformly and effectively transmitted to the entire surface of the ultra-thin glass 10. .

For example, the fluid supply unit 143 may include a connection pipe connected to the body 142 (that is, the flow path of the body); And it may include a pump (not shown) for supplying the fluid through the connection pipe. The connection pipe may be connected to the body portion 142 and communicate with a flow path of the body portion 142 . At this time, the connection pipe may be connected to and communicated with the flow path of the body portion 142, or may be inserted into the flow path of the body portion 142 and communicated therewith.

A pump (not shown) may supply the fluid between the surface of the body portion 142 and the elastic membrane 141 through the connection pipe by mechanical operation. Supply of the fluid may be turned on/off through a pump (not shown).

In the present invention, by pressurizing the upper ultra-thin glass 10 by expanding the elastic membrane 141 through the fluid, a uniform pressure can be generated on the contact surface with the ultra-thin glass 10, and thus a plurality of ultra-thin glasses. (10) can be uniformly adhered to each other, and the thickness (or height) of the plurality of ultra-thin glasses 10 can be uniformly adhered as a whole.

Also, the fluid may be supplied to the central portion of the elastic membrane 141 . That is, the fluid supply unit 143 may supply the fluid to the central portion of the elastic membrane 141 . Accordingly, through the expansion of the elastic membrane 141, the central portion of the ultra-thin glass 10, which is not supported by the dam portion or the seal portion, is first pressed, and then (a) pressure is transmitted to the outer direction (or edge portion) to form the ultra-thin glass ( 10) can be pressurized. When pressing from the edge (portion) of the ultra-thin glass 10 supported by the dam or the seal, the pressing force is not properly transmitted to the second adhesive 22 in the space surrounded by the dam or the seal, and the dam or the seal The pressing force is transmitted only to the first adhesive 21 of the portion, so that the dam or the seal may collapse, and the second adhesive 22 and/or the first adhesive 21 may leak out of the ultra-thin glass 10. In addition, the second adhesive 22 in the space surrounded by the dam part or the seal part is pushed in only one direction and may flow over (or overflow) the dam part or the seal part, and uniformly between the plurality of ultra-thin glass 10 The flatness (or lamination flatness) of the upper ultra-thin glass 10 may be lowered because it is not diffused properly and is biased to one side.

However, in the present invention, by supplying the fluid to the central portion of the elastic membrane 141 and pressurizing it from the central portion of the ultra-thin glass 10, the second adhesive 22 in the space surrounded by the dam or the seal unit is applied to a plurality of ultra-thin glass ( 10), and the pressing force at the edge (part) of the ultra-thin glass 10 is applied to the first adhesive 21 of the dam or seal part and the first adhesive 21 in the space surrounded by the dam or seal part. 2 Since it is dispersed and provided in the adhesive 22, it is possible to prevent (or suppress) the collapse of the dam part or the seal part, and the second adhesive 22 in the space surrounded by the dam part or the seal part It is possible to prevent leaking by overflowing the part or leaning to one side.

The ultra-thin glass processing apparatus 100 according to the present invention moves at least one of the stage 110 and the pressing part 140 to adjust the distance between the stage 110 and the pressing part 140. ); may further include.

The gap adjusting unit 160 may move at least one of the stage 110 and the pressing unit 140, and the gap between the stage 110 and the pressing unit 140 (for example, the stage and the body part 160). interval) can be adjusted. The spacing adjusting unit 160 adjusts the spacing between the stage 110 and the pressing unit 140, so that even if the height (or number of layers) of the plurality of ultra-thin glasses 10 is changed, a uniform pressing force is applied to the plurality of ultra-thin glasses 10. The expanded elastic membrane 141 can be elastically deformed so that the contact surface with the ultra-thin glass 10 is substantially flat, and uniform (a) pressure is transmitted to the entire surface of the ultra-thin glass 10. can be made Accordingly, damage (or breakage) of each of the plurality of ultra-thin glass 10 can be prevented. In addition, the strength and/or distribution of the pressing force transmitted to the ultra-thin glass 10 may be adjusted by adjusting the lifting force of the stage 110 or the pressing unit 140 through the spacing adjusting unit 160 .

Figure 4 is a conceptual diagram for explaining the cutting process by the processing unit according to an embodiment of the present invention, Figure 4 (a) shows the cutting of the ultra-thin glass laminate using a cutting wheel, Figure 4 (b) is a constant It shows an ultra-thin glass laminate separated into laminate units of the same size.

Referring to FIG. 4 , the ultra-thin glass processing apparatus 100 according to the present invention may further include a processing unit for processing the ultra-thin glass laminate 50 in which a plurality of ultra-thin glasses 10 are stacked.

The processing unit may process the ultra-thin glass laminate 50 in which a plurality of ultra-thin glasses 10 are stacked, and perform processing such as cutting to cut into a predetermined size or shape and/or edge processing to trim the edge surface. can Here, in the cutting process, the ultra-thin glass laminate 50 may be cut into a certain required size and separated (or divided) into laminate units 5. For example, the processing unit may include a cutting wheel (171), and in the cutting process, a computer numerical control (CNC) cutter equipped with a cutting wheel 171 made of diamond abrasive is used. Thus, it can be cut (or separated) into laminated units 5 of a certain size. Meanwhile, the processing unit may cut the ultra-thin glass laminate 50 by a laser cutting method using a laser.

In addition, the edge processing may remove chipping on the edge surface of the ultra-thin glass laminate 50 and/or the laminate unit 5. For example, fine chipping present on the edge surface of the ultra-thin glass laminate 50 and/or the shaped laminate unit 5 may be removed using a polishing wheel. At this time, as the surface material of the polishing wheel, a fine and durable cloth may be used. In order to form a rounded C angle in a “C” shape, the edge surfaces of each of the plurality of ultra-thin glasses 10 of the ultra-thin glass laminate 50 and/or the laminate unit 5 may be subjected to chemical edge polishing. there is. After firmly mounting the ultra-thin glass laminate 50 and/or the laminate unit 5 in the chemical edge healing equipment, the ultra-thin glass laminate (50 ) and/or while slowly rotating the laminate unit 5, chemical polishing may be performed so that the entire edge surface may be evenly healed. Through this, the ultra-thin glass 10 can have excellent edge strength, the flexural strength of the ultra-thin glass 10 can be improved, and a plurality of ultra-thin glass from the ultra-thin glass laminate 50 and/or the laminate unit 5 can be obtained. Separation of each glass 10 may be facilitated.

In the present invention, the ultra-thin glass laminate 50 is formed by laminating a plurality of ultra-thin glasses 10 through the adhesive 20, and after increasing the thickness to a thickness exceeding 150 μm, processing such as cutting or edge processing During processing, gripping can be facilitated, stable gripping is performed, precise processing is possible, and the ultra-thin glass 10 can be prevented from being damaged during processing. In addition, a plurality of ultra-thin glass 10 can be processed at one time, and accordingly, processing of ultra-thin glass 10 having excellent processing uniformity such as size can be performed, and the number of cutting processes can be reduced to reduce ultra-thin glass. The process time for processing the glass 10 may be shortened.

Meanwhile, the ultra-thin glass may have a thickness of 10 to 150 μm, and the ultra-thin glass laminate 50 may be formed by stacking 2 to 50 sheets of the ultra-thin glass 10 . Glass generally has brittleness, and when its thickness exceeds 150 μm and has hardness, it does not bend well and breaks when forcibly bent. This makes it impossible to apply to a flexible display. Accordingly, by etching the original glass having a thickness of 400 μm or more with an etchant, the ultra-thin glass 10 having a thickness of 10 to 150 μm can be manufactured (or prepared) by reducing the thickness, and the ultra-thin glass ( 10) may have a thickness of 10 to 150 μm.

Recently, an ultra-thin glass 10 having a bend radius (R) of 1 to 10 mm is required to be applied to a foldable display, and the ultra-thin glass 10 of the present invention has a bend radius of 1 to 10 mm. Here, the flexibility of the ultra-thin glass 10 can be characterized by a bending radius, and the bending radius R can be measured as an inner curvature at the bending position of the ultra-thin glass 10, It can be determined by the thickness (T), Young's modulus, and bending strength of the glass 10 . At this time, the very thin thickness, low Young's modulus and high bending strength of the ultra-thin glass 10 contribute to the low bending radius and excellent flexibility of the ultra-thin glass 10 . At a thickness of 150 μm or less, the ultra-thin glass 10 may have flexibility, but at a thickness of 100 to 150 μm, the ultra-thin glass 10 can only be bent at a bendable level and cannot be folded. It is impossible to bend at the level of a foldable with a bending radius (R) of 1 to 10 mm. Therefore, preferably, the ultra-thin glass 10 may have a thickness of 10 to 100 μm so that the foldable level of bending is possible.

The ultra-thin glass 10 may be ultra-thin glass 10 chemically strengthened to have a high bending strength and/or a low Young's modulus. Here, the chemical strengthening may be performed by coating the surface and/or edge of the ultra-thin glass 10 . For example, in the chemical strengthening, the surface of the ultra-thin glass 10 may be strengthened by forming a compressive stress layer on the surface of the ultra-thin glass 10 . That is, the ultra-thin glass 10 may include the compressive stress layer on the surface, and may be the ultra-thin glass 10 having the compressive stress layer formed on the surface by the chemical strengthening. The compressive stress layer may be formed on the surface of the ultra-thin glass 10 by ion exchange on the surface of the ultra-thin glass 10, and the compressive stress may correspond to the tensile stress when the ultra-thin glass 10 is bent. . Accordingly, the bending strength of the ultra-thin glass 10 can be improved, handling and processing of the ultra-thin glass 10 can be facilitated, the bending radius of the ultra-thin glass 10 can be reduced, and the ultra-thin glass 10 ) can be improved.

At this time, the ultra-thin glass 10 having an alkali (eg, Li, Na, K, etc.) and/or aluminum (Al) containing composition can obtain high mechanical strength at a specific thickness (eg, about 100 μm or less). In addition, excellent flexibility and bendability can be obtained. Sodium (Na) and lithium (Li) and Na ⁺ /Li ⁺ present in the ultra-thin glass 10 using alkali metal oxides (eg, K ₂ O, Na ₂ O and Li ₂ O) as glass processing modifiers , Na ⁺ /K ⁺ and Li ⁺ /K ⁺ ion exchange, thereby forming the compressive stress layer and chemically strengthening the ultra-thin glass 10 .

For example, the chemical strengthening may be performed by dipping the ultra-thin glass 10 into a salt bath containing monovalent ions for exchanging with alkali ions in the ultra-thin glass 10, and the salt bath The diameter of the monovalent ion in may be larger than the diameter of the alkali metal ion in the ultra-thin glass 10, thereby generating a compressive stress acting on the surface of the ultra-thin glass 10 after ion exchange. Through this, the bending strength and flexibility of the ultra-thin glass 10 can be improved, and the compressive stress (CS) induced by the chemical strengthening increases the scratch resistance of the ultra-thin glass 10, thereby increasing the ultra-thin glass 10. It is possible to prevent the glass 10 from being easily scratched, and the depth of ion-exchange layer (DoL) increases scratch tolerance so that the ultra-thin glass 10 is less likely to break even when scratched. can be made

The most commonly used salts for the chemical strengthening are Na ⁺ containing molten salts or K ⁺ containing molten salts or mixtures thereof. Commonly used salts may include NaNO ₃ , KNO ₃ , NaCl, KCl, K ₂ SO ₄ , Na ₂ SO ₄ and Na ₂ CO ₃ , such as NaOH, KOH and other sodium or potassium salts or cesium salts. Additives may be used for better control of the ion exchange rate for the chemical enhancement.

Meanwhile, the ultra-thin glass 10 may be soda-lime glass containing sodium carbonate (Na ₂ CO ₃ ), and some of the sodium ions (Na ⁺ ) on the surface of the ultra-thin glass 10 have a glass transition temperature (or softening point) and above, potassium ions (K ⁺ ) with larger ionic radii can be substituted. That is, in the structure of the ultra-thin glass 10, K ⁺ with large particles is inserted into the inner space of the ultra-thin glass 10 containing Na ⁺ to fill the small space containing Na ⁺ , so that the surface of the ultra-thin glass 10 can be compressed more strongly to have excellent elasticity, and can be resistant to surface scratches. Since potassium ions (K ⁺ ) have larger particles than sodium ions (Na ⁺ ), they occupy more space, and in this state, when the ultra-thin glass 10 is cooled, a layer having strong compressive stress (ie, the compressive stress layer) Formed on the surface of the ultra-thin glass 10, it may have durability that prevents scratches and scratches. And the ultra-thin glass 10 is an alkali-containing glass (eg, alkali silicate glass, alkali borosilicate glass, alkali aluminoborosilicate glass, alkali boron glass, alkali germanate glass, alkali borogermanate glass and their combination), and may contain an alkali to enable ion exchange and the chemical strengthening.

The ultra-thin glass laminate 50 may be formed by stacking 2 to 50 sheets of ultra-thin glass 10 . Glass with a thickness of more than 150 ㎛ (0.15 mm) can be processed such as edge processing by using the physical polishing method on a sheet-by-sheet basis, and the edge of the glass forms a “C”-shaped round C-angle. It is also possible, but since the ultra-thin glass 10 having a thickness of 150 μm or less is 100% broken, the physical polishing method cannot be applied to each sheet. In order to prevent 100% breakage due to processing the ultra-thin glass 10 one by one, 2 to 50 sheets of ultra-thin glass 10 are laminated to form an ultra-thin glass laminate 50 having a thickness exceeding 150 μm, and then cut Machining, edge processing, and the like can be performed. In the case of processing a plurality of ultra-thin glass 10 at once after forming the ultra-thin glass laminate 50, it has a thickness exceeding 150 μm, making it easy to grip during processing such as cutting or edge processing. , It is possible to perform precise processing through stable gripping, and it is possible to prevent the ultra-thin glass 10 from being damaged during processing. In addition, by processing a plurality of ultra-thin glass 10 at once, processing of ultra-thin glass 10 having excellent processing uniformity such as size can be performed, and the number of processing such as cutting process is reduced, so that the quality of ultra-thin glass 10 The process time for treatment may be shortened.

Further, the ultra-thin glass processing apparatus 100 of the present invention may further include a position alignment unit (not shown) for aligning the position of the ultra-thin glass 10 on the stage 110 .

The alignment unit (not shown) may align the position of the ultra-thin glass 10 on the stage 110, and the ultra-thin glass 10 in contact with the support surface of the stage 110 is It may be aligned so as to be supported at a predetermined position on the top, and it may be aligned between the ultra-thin glass 10 adhered to the upper portion by the adhesive sheet 20 and the ultra-thin glass 10 to the lower portion.

For example, the alignment unit (not shown) is formed on the stage 110 to limit the position of the ultra-thin glass 10 on the support surface of the stage 110, and a position holding member (not shown) and a plurality of ultra-thin glasses. (10) may include an alignment sensor (not shown) for sensing alignment between them. A position holding member (not shown) may be formed on the stage 110 and may limit (or limit) the position of the ultra-thin glass 10 on the support surface of the stage 110 . Accordingly, the ultra-thin glass 10 of the lowest layer supported by contacting the support surface of the stage 110 can always be provided at the same position, and the position of the ultra-thin glass 10 of the lowest layer is the same for each ultra-thin glass laminate 50. can be maintained. For example, the position holding member (not shown) may provide a step that blocks (or catches) the side surface of the ultra-thin glass 10, may be formed to protrude on the stage 110, or may be formed on the stage 110. The support surface of ) may be recessed and the side surface of the ultra-thin glass 10 may be caught by the inner surface of the concave groove. In addition, the position holding member (not shown) can maintain the position of the ultra-thin glass 10 without shaking the ultra-thin glass 10 from side to side by causing the side surface of the ultra-thin glass 10 to be caught (or blocked) by the stepped jaw. . Here, the stepped jaw may be provided around the entire side surface of the ultra-thin glass 10 or around only a part of the side surface of the ultra-thin glass 10, but the edge of the ultra-thin glass 10 may be provided on the support surface of the stage 110. It is enough to limit and maintain a location.

The alignment sensor (not shown) can detect (or check) alignment between the plurality of ultra-thin glasses 10, and check the alignment between the plurality of ultra-thin glasses 10 so that alignment is achieved between the plurality of ultra-thin glasses 10. can do. For example, the alignment sensor (not shown) may be a vision camera, and monitors the alignment state (eg, distortion or position of each of the plurality of ultra-thin glasses) between the plurality of ultra-thin glasses 10 ( monitoring) to align the newly transferred (or laminated) ultra-thin glass 10 with the previously laminated ultra-thin glass 10(s). Here, alignment between the plurality of ultra-thin glasses 10 may be achieved by moving the newly transferred ultra-thin glass 10 through a transfer unit (not shown).

In order to increase the uniformity of processing among the plurality of ultra-thin glasses 10 that have been processed, alignment between the plurality of ultra-thin glasses 10 is required. To this end, in the present invention, the plurality of ultra-thin glasses 10 ) can be sorted.

5 is a flowchart illustrating an ultra-thin glass processing method according to another embodiment of the present invention.

Referring to FIG. 5, an ultra-thin glass processing method according to another embodiment of the present invention will be looked at in more detail. Items overlapping with those described above in relation to the ultra-thin glass processing apparatus according to an embodiment of the present invention will be omitted. .

An ultra-thin glass processing method according to another embodiment of the present invention includes supporting a first ultra-thin glass 11 on a stage 110 (S100); providing an adhesive 20 on the first ultra-thin glass 11 supported on the stage 100 (S200); providing a second ultra-thin glass 12 on the adhesive 20 (S300); and providing a pressing force on the second ultra-thin glass 12 by using the pressing unit 140 (S400).

First, the first ultra-thin glass 11 is supported on the stage 110 (S100). The first ultra-thin glass 11 can be supported on the stage 110, and the second ultra-thin glass 12 is laminated on the first ultra-thin glass 11 through the adhesive 20 to form an ultra-thin glass laminate 50 ) can be fixed so that the first ultra-thin glass 10 does not move while forming. For example, the stage 110 may support and fix the first ultra-thin glass 11 on a porous surface.

Next, an adhesive 20 is provided on the first ultra-thin glass 11 supported on the stage 110 (S200). An adhesive 20 may be provided on the first ultra-thin glass 11 supported on the stage 110, and the first ultra-thin glass 11 and the second ultra-thin glass 12 may be bonded through the adhesive 20. can At this time, the adhesive providing unit 130 may be used, and the liquid adhesive 20 having viscosity may be applied and provided on the first ultra-thin glass 11, and the liquid adhesive 20 such as resin may be used. can be printed on the first ultra-thin glass 11. Here, the adhesive 20 may be photocured by light such as ultraviolet (UV) light, and when cured, adhesive strength may be improved.

Then, a second ultra-thin glass 12 is provided on the adhesive 20 (S300). By providing the second ultra-thin glass 12 on the adhesive 20 , the first ultra-thin glass 11 and the second ultra-thin glass 12 can be bonded through the adhesive 20 . Here, the first ultra-thin glass 11 and the second ultra-thin glass 12 may be the same ultra-thin glass 10 or may be classified according to the stacking order.

Then, a pressing force is provided on the second ultra-thin glass 12 by using the pressing part 140 (S400). It is possible to provide a pressing force on the second ultra-thin glass 12, and bring the first ultra-thin glass 11 and the second ultra-thin glass 12 facing each other closer to each other so that the adhesive 20 is applied to the first ultra-thin glass 11 and the second ultra-thin glass 11. It can be uniformly diffused between the second ultra-thin glass 12 . For example, the liquid adhesive 20 is uniformly spread between the first ultra-thin glass 11 and the second ultra-thin glass 12 by gradually pressing the second ultra-thin glass 12 exposed on the stage 110. can be made

The first ultra-thin glass 11 and the second ultra-thin glass 12 may be laminated with an adhesive 20 to form the ultra-thin glass laminate 50, and the ultra-thin glass 10 is laminated with 2 to 50 sheets. The thin glass laminate 50 can be formed. Glass with a thickness exceeding 150 ㎛ (0.15 mm) can be processed such as edge processing by using the physical polishing method on a sheet-by-piece basis, and it is possible to form a C angle with a “C” shape round on the edge of the glass. , Since the first ultra-thin glass 11 or the second ultra-thin glass 12 having a thickness of 150 μm or less is 100% damaged, the physical polishing method cannot be applied to each sheet. In order to prevent 100% breakage due to processing the first ultra-thin glass 11 or the second ultra-thin glass 12 one by one, 1 to 49 second ultra-thin glass are formed on the first ultra-thin glass 11 with a thickness exceeding 150 μm. After forming the ultra-thin glass laminate 50 by laminating the ultra-thin glass 12 , processing such as cutting and edge processing may be performed. In the case of processing the first ultra-thin glass 11 and the second ultra-thin glass 12 at once after forming the ultra-thin glass laminate 50, they have a thickness exceeding 150 μm, and processing such as cutting or edge processing During processing, gripping may be facilitated, stable gripping may be performed, precise processing may be possible, and damage of the first ultra-thin glass 11 or the second ultra-thin glass 12 may be prevented during processing. In addition, by processing the first ultra-thin glass 11 and the second ultra-thin glass 12 (ie, a plurality of ultra-thin glasses) at once, processing of the ultra-thin glass 10 having excellent processing uniformity such as size can be achieved. Also, since the number of processing such as cutting processing is reduced, the process time for processing the plurality of ultra-thin glass 10 may be shortened.

Here, in order to form the ultra-thin glass laminate 50 in which three or more sheets of ultra-thin glass 10 are laminated, the process of providing the adhesive 20 (S200) and the process of providing the second ultra-thin glass 12 ( A plurality (eg, 1 to 49 sheets) of second ultra-thin glass 12 may be laminated on the first ultra-thin glass 11 by repeating step S300 to form the ultra-thin glass laminate 50 . In the process of providing the second or more adhesive 20 (S200), in the process of providing the first adhesive 20 (S200), the adhesive 20 is directly provided on the surface of the first ultra-thin glass 11, and Alternatively, the adhesive 20 may be provided on the surface of the second ultra-thin glass 12 exposed on the (uppermost) upper portion of the first ultra-thin glass 11 .

The process of providing the pressing force (S400) may include a process of elastically deforming the elastic membrane 141 of the pressing unit 140 (S410).

The elastic membrane 141 of the pressing unit 140 may be elastically deformed (S410). The elastic membrane 141 of the pressing unit 140 has elasticity and can be deformed by an external force, and can press the second ultra-thin glass 12 by this deformation and selectively apply the second ultra-thin glass 12 to the second ultra-thin glass 12. can be contacted. For example, the elastic membrane 141 may be made of a rubber material, has a balloon shape, and can be expanded by supplying a fluid such as air, and the ultra-thin glass 10 is pushed toward the stage by this expansion and pressurized. can At this time, the elastic film 141 has a certain degree of cushioning and ductility to prevent damage such as scratches to the ultra-thin glass 10, and the adhesive 20 is applied to the first ultra-thin glass 11 and the second ultra-thin glass 10. It can be diffused with a constant thickness between the ultra-thin glass 12 .

Here, the contact surface of the elastic membrane 141 with the second ultra-thin glass 12 may include a curved surface, the entire contact surface with the second ultra-thin glass 12 may form one curved surface, or the second ultra-thin glass ( A part of the contact surface with 12) may form a curved surface. If the contact surface of the elastic film 141 with the second ultra-thin glass 12 has a curved surface, the central portion of the second ultra-thin glass 12 can be pressed first, and the adhesive 20 is applied to the first ultra-thin glass 11. The adhesive 20 can be spread from the central portion between the first ultra-thin glass 11 and the second ultra-thin glass 12 to the edge (portion) so as not to be concentrated in the central portion between the second ultra-thin glass 12, and thus a plurality of of ultra-thin glass 10 can be bonded with a uniform thickness. In addition, the dam part or the seal part of the edge (part) of the first ultra-thin glass 11 is supported, so that the pressure is not well transmitted when the contact surface with the second ultra-thin glass 12 is flat. Pressing force can also be well transmitted to the central portion between the first ultra-thin glass 11 and the second ultra-thin glass 12 .

6 is a view sequentially showing some of ultra-thin glass processing methods according to another embodiment of the present invention. FIG. 6(b) shows the first ultra-thin glass and the second ultra-thin glass laminated with an adhesive interposed therebetween, and FIG. 6(c) shows the process of contacting the elastic membrane to the second ultra-thin glass.

Referring to FIG. 6 , the process of providing the pressing force (S400) may further include a process of bringing the elastic membrane 141 into contact with the second ultra-thin glass 12 (S415).

The elastic film 141 may be brought into contact with the second ultra-thin glass 12 (S415). By bringing the elastic film 141 into contact with the second ultra-thin glass 12, the second ultra-thin glass 12 can be contact-pressed. At this time, the elastic membrane 141 may be brought into contact with (only) the central portion of the second ultra-thin glass 12, and the contact surface having a curved surface may make point contact or linear contact with the central portion of the second ultra-thin glass 12. . Here, the elastic membrane 141 may have a circular shape with a curved surface, or may be elastically deformed to form a curved surface and then brought into contact with the second ultra-thin glass 12 .

On the other hand, since the body part 142 fixes the edge of the elastic membrane 141, the central portion of the elastic membrane 141 may sag due to its own weight and come into contact with the second ultra-thin glass 12, and the elastic membrane 141 may The second ultra-thin glass 12 may be held so that it does not move between the stage 110 and the stage 110 by its own weight. Although the second ultra-thin glass 12 can move while the first adhesive 21 is cured by the curing direction in which the first adhesive 21 is cured from the outermost side to the inside, the weight of the elastic film 141 prevents it. 2 Holding the ultra-thin glass 12 and curing the first adhesive 21 from the outermost side to the inside using the first light source 151 prevents movement of the second ultra-thin glass 12 .

The process of elastically deforming the elastic membrane 141 (S410) may be performed by expanding the elastic membrane 141 through fluid supply between the elastic membrane 141 and the body 142 of the pressing unit 140. . That is, the process of elastically deforming the elastic membrane 141 (S410) is a process of expanding the elastic membrane 141 through fluid supply between the elastic membrane 141 and the body 142 of the pressing unit 140. In addition, by pressurizing the second ultra-thin glass 12 by expanding the elastic membrane 141 through the supply of the fluid, a uniform pressure can be generated on the contact surface with the second ultra-thin glass 12. 1 ultra-thin glass 11 and the second ultra-thin glass 12 can be uniformly adhered to each other, and the thickness of the first ultra-thin glass 11 and the second ultra-thin glass 12 can be uniformly bonded as a whole. .

In the process of elastically deforming the elastic membrane 141 ( S410 ), the fluid may be supplied to the central portion of the elastic membrane 141 . That is, after first pressing the central portion of the second ultra-thin glass 12 that is not supported by the dam part or the seal part through the expansion of the elastic membrane 141, (a) pressure is transmitted to the outer direction so that the second ultra-thin glass 12 ) can be pressed on the whole (face). When pressing from the edge (portion) of the second ultra-thin glass 12 supported by the dam or the seal, the adhesive 20 in the space surrounded by the dam or the seal (that is, the second adhesive) does not properly apply pressure. Without being transmitted, the pressing force is transmitted only to the adhesive 21 of the dam or the seal portion (ie, only the first adhesive), and the dam or the seal may collapse, and the adhesive 20 may leak out of the ultra-thin glass 10 may be In addition, the adhesive 20 in the space surrounded by the dam part or the seal part is pushed in only one direction and may flow over (or overflow) the dam part or the seal part, and the first ultra-thin glass 11 and the second ultra-thin glass The flatness (or laminated flatness) of the second ultra-thin glass 12 may be reduced because it is not uniformly diffused between the layers 12 and is slanted to one side.

However, in the present invention, by supplying the fluid to the central portion of the elastic membrane 141 and pressurizing the second ultra-thin glass 12 from the central portion, the adhesive 20 in the space surrounded by the dam or the seal unit is applied to the first ultra-thin glass ( 11) and the second ultra-thin glass 12, it can spread evenly to both sides, and the pressing force at the edge (portion) of the second ultra-thin glass 12 is applied to the adhesive 20 of the dam or seal unit and the dam. Alternatively, since the adhesive 20 in the space surrounded by the seal part is dispersed and provided, it is possible to prevent (or suppress) the collapse of the dam part or the seal part, and the adhesive 20 in the space surrounded by the dam part or the seal part It is possible to prevent the dam portion or the seal portion from overflowing, leaking, or leaning to one side.

The process of providing the adhesive 20 (S200) may include a process of providing the first adhesive 21 to the edge of the first ultra-thin glass 11 or the second ultra-thin glass 12 (S210). .

The first adhesive 21 may be provided on the edge of the first ultra-thin glass 11 or the second ultra-thin glass 12 (S210). In the case of laminating the lower second ultra-thin glass 12, the first adhesive 21 may be provided on the edge of the first ultra-thin glass 11, and in the case of laminating the upper second ultra-thin glass 12 The first adhesive 21 may be applied to the edge of the second ultra-thin glass 12 at the bottom. The first adhesive 21 may be applied to the edge of the first ultra-thin glass 11 or the second ultra-thin glass 12 using the first adhesive discharge unit 131, and the first ultra-thin glass 11 or It may be provided by applying the liquid first adhesive 21 having viscosity on the edge of the second ultra-thin glass 12 . For example, by printing the first adhesive 21 along the edge of the first ultra-thin glass 11 or the second ultra-thin glass 12, the second adhesive 22 and/or the first adhesive 21 is formed into the first adhesive 21. The dam part or the seal part may be formed to suppress or prevent leaking out of the ultra-thin glass 11 or the second ultra-thin glass 12 . At this time, as the first adhesive 21, an adhesive 20 having high viscosity may be used to form the dam portion or the seal portion.

7 is a view sequentially showing the remaining part of the ultra-thin glass processing method according to another embodiment of the present invention, FIG. 7 (a) shows a process of curing the first adhesive, and FIG. 7 (b) shows a fluid supply 7(c) shows the adjustment of the distance between the stage and the pressing part.

Referring to FIG. 7 , the ultra-thin glass processing method according to the present invention irradiates light from the side of the ultra-thin glass laminate 50 in which the first ultra-thin glass 11 and the second ultra-thin glass 12 are stacked to form the first ultra-thin glass. A process of curing the adhesive 21 (S405); may be further included.

The first adhesive 21 may be cured by irradiating light from the side of the ultra-thin glass laminate 50 in which the first ultra-thin glass 11 and the second ultra-thin glass 12 are stacked (S405). Light can be irradiated from the side of the plurality of ultra-thin glasses 10 through the first light source unit 151, and the first adhesive 21 provided at the edges (parts) between the plurality of ultra-thin glasses 10 is cured. (or temporary hardening). For example, the first light source unit 151 may be provided toward the side (or side) of the adhesive 20 exposed between the plurality of ultra-thin glasses 10 in which the adhesive 20 is interposed, and a predetermined wavelength (eg, For example, the first adhesive 21 provided at the edge (portion) between the plurality of ultra-thin glasses 10 may be cured by irradiating light of a first wavelength. At this time, the adhesive strength of the first adhesive 21 may be improved while being cured, and the cured first adhesive 21a may improve the adhesive strength between the first ultra-thin glass 11 and the second ultra-thin glass 12 .

The process of curing the first adhesive 21 (S405) may be performed before the process of elastically deforming the elastic film 141 (S410) or concurrently with the process of elastically deforming the elastic film 141 (S410). there is. That is, before the second ultra-thin glass 10 is pressed and the second adhesive 20 spreads to the edge (portion) between the first ultra-thin glass 11 and the second ultra-thin glass 12, the first adhesive 21 can be hardened.

For example, as shown in FIG. 6(d), the elastic membrane 141 is only brought into contact with the second ultra-thin glass 10, and before the elastic membrane 141 is inflated (before the process of inflating the elastic membrane) The first adhesive 21 may be cured through the first light source unit 151, and as the elastic membrane 141 expands, the first adhesive 21 to be cured corresponds to (or opposite to) the first light source unit 151. facing), the first adhesive 21 may be cured simultaneously with the expansion of the elastic membrane 141, and the second adhesive 20 spread by the expansion of the elastic membrane 141 extends to the edge (portion). The first adhesive 21 may be cured before spreading. When the first adhesive 21 to be hardened while the elastic membrane 141 expands is positioned to correspond to the first light source unit 151, an elastic member (not shown) is installed on the stage 110 so as to be elastic. The pressure caused by the expansion of the film 141 causes the stage 110 to descend by the length of the elastic member (not shown) contracted so that the first adhesive 21 reaches a position corresponding to the first light source unit 151. Alternatively, by adjusting the relative position of the first light source unit 151 and the first adhesive 21 through the movement of at least one of the first light source unit 151 and the stage 110 according to the expansion of the elastic membrane 141 , the first adhesive 21 may reach a position corresponding to the first light source unit 151 .

In the present invention, the second ultra-thin glass 12 is pressed through the first light source unit 151 so that the second adhesive 22 extends to the edge (part) between the first ultra-thin glass 11 and the second ultra-thin glass 12. The first adhesive 21 can be (temporarily) cured before being spread, and the second adhesive 22 that spreads by forming a dam that does not collapse under pressure forms the first ultra-thin glass 11 and the second ultra-thin glass 12 ), and the gap between the first ultra-thin glass 11 and the second ultra-thin glass 12 is tightly bonded between the first ultra-thin glass 11 and the second ultra-thin glass 12. can prevent this from happening.

The ultra-thin glass processing method according to the present invention includes a step of moving the first light source unit 151 for irradiating light in the lateral direction of the ultra-thin glass laminate 50 in the lamination direction of the ultra-thin glass laminate 50 (S450). can include more.

The first light source unit 151 emitting light in the lateral direction of the ultra-thin glass laminate 50 may be moved in the stacking direction of the ultra-thin glass laminate 50 (S450). The first light source unit 151 can be moved in the stacking direction of the ultra-thin glass laminate 50 through the first light source driver 155, and the second ultra-thin glass 12 is stacked according to the height (or number of layers). 1 The position of the light source unit 151 may be adjusted, and the first light source unit 151 is reciprocally moved between the (outside) side of the stage 110 and the side of the ultra-thin glass laminate 50 to form the first adhesive 21 It may also perform an on / off function of light of a predetermined wavelength for curing. Accordingly, the first adhesive 21 of all heights can be effectively cured without uncured portions by concentrating and irradiating light of a predetermined wavelength on (only) the first adhesive 21 to be cured.

The process of providing the adhesive 20 (S200) may further include a process of providing the second adhesive 22 to the central portion of the first ultra-thin glass 11 or the second ultra-thin glass 12 (S220). there is.

A second adhesive 22 may be applied to the central portion of the first ultra-thin glass 11 or the second ultra-thin glass 12 (S220). Here, the second adhesive 22 may be different from the first adhesive 21 in at least one of viscosity, material, density, and material state. For example, the second adhesive 22 may have a different viscosity from that of the first adhesive 21, and thus may have a different material and/or density. In the case of laminating the lower second ultra-thin glass 12, the second adhesive 22 may be provided in the center of the first ultra-thin glass 11, and in the case of laminating the upper second ultra-thin glass 12 The second adhesive 22 may be provided in the central portion of the lower second ultra-thin glass 12 . The second adhesive 22 may be applied to the central portion of the first ultra-thin glass 11 or the second ultra-thin glass 12 using the second adhesive discharge unit 132, and the first ultra-thin glass 11 or the second ultra-thin glass 12 may be applied. 2 It may be provided by applying a liquid second adhesive 22 having viscosity on the central portion of the ultra-thin glass 12 . For example, the second adhesive 22 may be printed on the central portion of the first ultra-thin glass 11 or the second ultra-thin glass 12, and the empty space where the first adhesive 21 is not provided is filled with the second adhesive. The second adhesive 22 may be printed at a location where the second adhesive 22 can be well spread by pressing by the pressurizing unit 140 instead of filling it all with (22). Here, the second adhesive 22 is applied between the first ultra-thin glass 11 and the second ultra-thin glass 12 or between the plurality of second ultra-thin glasses 12 in the space surrounded by the dam part or the seal part. An adhesive 20 having lower viscosity than the first adhesive 21 may be used so as to be effectively spread.

In the ultra-thin glass processing method according to the present invention, after the process of curing the first adhesive 21 (S415), the process of curing the second adhesive 22 by irradiating light from the upper part of the stage 110 (S460) ; may be further included.

After the process of curing the first adhesive 21 (S415), the upper part of the stage 110 may be irradiated with light to cure the second adhesive 22 (S460). That is, after the first adhesive 21 is first cured, the second adhesive 22 may be cured by temporally separating. Here, the second adhesive 22 provided in the central portion between the first ultra-thin glass 11 and the second ultra-thin glass 12 by irradiating light using the second light source unit 152 provided on the stage 110. ) can be cured (or temporarily cured). For example, the second light source unit 152 may be provided from the top of the stage 110 toward the second ultra-thin glass 12, and irradiates light of a predetermined wavelength (eg, the second wavelength) to generate the first light. The second adhesive 22 provided in the central portion between the ultra-thin glass 11 and the second ultra-thin glass 12 may be cured. At this time, the adhesive strength of the second adhesive 22 may be improved while being cured, and the cured second adhesive 22a may improve the adhesive strength between the first ultra-thin glass 11 and the second ultra-thin glass 12 .

The first adhesive 21 is the dam portion for suppressing or preventing the second adhesive 22 and/or the first adhesive 21 from leaking out of the first ultra-thin glass 11 or the second ultra-thin glass 12. Alternatively, the second ultra-thin glass 12 is pressed to effectively perform the function of the seal unit so that the second adhesive 22 extends to the edge (part) between the first ultra-thin glass 11 and the second ultra-thin glass 12. The second adhesive 22 may be cured before spreading, and the second adhesive 22 may be applied to the first ultra-thin glass 22 for uniform and close adhesion between the first ultra-thin glass 11 and the second ultra-thin glass 12 ( 11) and the second ultra-thin glass 12, it can be cured after being uniformly diffused throughout. For example, the first adhesive 21 may be cured with the first light source unit 151 before inflating the elastic membrane 141, as shown in FIG. 6(d), and the second adhesive 22 may be an elastic membrane ( 141) to inflate the entirety of the second adhesive 22 between the first ultra-thin glass 11 and the second ultra-thin glass 12, and then harden with the second light source unit 152.

The first adhesive 21 and the second adhesive 22 are hardened at an appropriate time point (or timing) according to the function and role of each of the first adhesive 21 and the second adhesive 22, so that the second adhesive 22 ) and/or between the first ultra-thin glass 11 and the second ultra-thin glass 12 and/or between the first ultra-thin glass 11 and the second ultra-thin glass 12 according to the uniform diffusion of the second adhesive 22 while preventing defects due to leakage of the first adhesive 21 An ultra-thin glass laminate 50 having excellent adhesion between the two ultra-thin glasses 12 and the second ultra-thin glass 12 can be formed (or manufactured). Accordingly, contamination of materials and equipment due to leakage of the second adhesive 22 and/or the first adhesive 21 can be prevented, and the processing of each of the first ultra-thin glass 11 and the second ultra-thin glass 12 can be performed. It is possible to shorten the process time for the process, and contribute to the improvement of production yield through the improvement of the quality of the finished product.

Meanwhile, the first adhesive 21 and the second adhesive 22 may be different, and at least one of viscosity, material, density, and material state may be different. For example, the first adhesive 21 and the second adhesive 22 may have different viscosities, and thus may have different materials and/or densities. At this time, the wavelength at which the adhesive 20 can be cured may vary depending on the material, density and/or thickness.

In addition, the first adhesive 21 and/or the second adhesive 22 may be cured by ultraviolet (UV) or visible light of a specific wavelength range, and the first light source unit 151 and/or the second light source unit 152 may be cured. may include an ultraviolet irradiation unit for irradiating ultraviolet rays of an appropriate wavelength range. Here, when the first adhesive 21 and the second adhesive 22 are different, the curing wavelength may be different, and the first light source unit 151 irradiates light of the first wavelength to cure the first adhesive 21. and the second light source unit 152 may irradiate light of a second wavelength different from the first wavelength to cure the second adhesive 22 .

That is, the dam part or the seal part is formed at the edge of the ultra-thin glass 10 with the first adhesive 21 having high viscosity, and the second adhesive having low viscosity so as to be easily spread in the space surrounded by the dam part or the seal part ( 22), the material, density and / or thickness may vary between the first adhesive 21 and the second adhesive 22, and each position through the first light source unit 151 and the second light source unit 152 The first and second wavelengths suitable for curing of the first adhesive 21 or the second adhesive 22 are irradiated, respectively, so that the first adhesive 21 and the second adhesive 22 are uniformly cured as a whole. It can be done. For example, the first wavelength may be a longer wavelength than the second wavelength, the first light source unit 151 emits light of the first wavelength, which is a relatively long wavelength, and the second light source unit 152 emits light having a relatively long wavelength. It is possible to irradiate light of the second wavelength, which is a short wavelength.

The ultra-thin glass processing method according to the present invention may further include a process of narrowing the gap between the stage 110 and the pressing part 140 (S420) after the process of elastically deforming the elastic membrane 141 (S410). .

After the process of elastically deforming the elastic membrane 141 (S410), the distance between the stage 110 and the pressing part 140 may be narrowed (S420). At least one of the stage 110 and the pressing part 140 can be moved through the gap adjusting part 160, and the distance between the stage 110 and the pressing part 140 (for example, the stage and the body) spacing) can be adjusted. After the process of elastically deforming the elastic membrane 141 (S410), the distance between the stage 110 and the pressing portion 140 may be narrowed, and after the elastic membrane 141 is inflated, the stage 110 and the pressing portion ( 140), the inflated elastic film 141 is elastically deformed so that the contact surface with the second ultra-thin glass 12 is substantially flat, and a uniform surface is formed over the entire surface of the second ultra-thin glass 12. (a) Pressure can be transmitted. In addition, by adjusting the lifting force of the stage 110 or the pressing part 140 (or the distance between the stage and the pressing part) through the spacing adjusting part 160, the strength of the pressing force transmitted to the second ultra-thin glass 12 and /or the distribution can be adjusted. On the other hand, after attaching and laminating one second ultra-thin glass 12 on the first ultra-thin glass 11, a new second ultra-thin glass 12 is bonded to the first ultra-thin glass 11, and the second ultra-thin glass ( 12) In the case of bonding on the second ultra-thin glass 12, even if the height (or number of layers) of the second ultra-thin glass 12 is changed, the distance between the stage 110 and the pressing part 140 is adjusted to adjust the pressing part 140 and the second ultra-thin glass 12 ), it is also possible to provide a uniform (or equal) pressing force on all the second ultra-thin glass 12.

The ultra-thin glass processing method according to the present invention may further include a step of processing the ultra-thin glass laminate 50 in which the first ultra-thin glass 11 and the second ultra-thin glass 12 are stacked (S500).

In addition, the ultra-thin glass laminate 50 in which the first ultra-thin glass 11 and the second ultra-thin glass 12 are stacked may be processed (S500). It is possible to process the ultra-thin glass laminate 50 in which the first ultra-thin glass 11 and the second ultra-thin glass 12 are laminated, cutting into a predetermined size or shape, and/or edge processing to refine the edge surface, etc. processing can be performed.

That is, the process of processing the ultra-thin glass laminate 50 (S500) includes cutting the ultra-thin glass laminate 50 into a predetermined size (S510); and polishing the edge surface of the ultra-thin glass laminate 50 (S520).

The ultra-thin glass laminate 50 may be cut into a predetermined size (S510). The ultra-thin glass laminate 50 may be divided (or separated) into laminate units 5 by cutting them to a certain required size. For example, using a computer numerical control cutting machine equipped with a cutting wheel 171 made of diamond abrasive, it is possible to cut (or separate) into laminate units 5 of a certain size. Meanwhile, the ultra-thin glass laminate 50 may be cut by a laser cutting method using a laser.

Then, the edge surface of the ultra-thin glass laminate 50 may be polished (S520). Edge processing may be performed to polish the edge surface of the ultra-thin glass laminate 50, and chipping may be removed from the edge surface of the ultra-thin glass laminate 50 and/or the laminate unit 5. . For example, fine chipping existing on the edge surface of the ultra-thin glass laminate 50 and/or the shape-processed laminate unit 5 can be removed using a polishing wheel. At this time, as the surface material of the polishing wheel, a fine and durable cloth may be used. On the other hand, chemical edge polishing may be performed to form a rounded C angle in a “C” shape for excellent edge strength.

The ultra-thin glass processing method of the present invention may further include a step of separating the first ultra-thin glass 11 and the second ultra-thin glass 12 from the processed laminate unit 5 (S550).

The first ultra-thin glass 11 and the second ultra-thin glass 12 may be separated from the processed laminate unit 5 (S550). In the processed laminate unit 5, the first ultra-thin glass 11 and the second ultra-thin glass 12 can be separated into individual sheets, and special chemicals (eg, acetone-based chemicals or alkaline water washing liquid) or After the adhesive 20 is melted and removed by solution treatment with deionized water (DI water) or the like, the first ultra-thin glass 11 and the second ultra-thin glass 12 (ie, a plurality of ultra-thin glasses) are separated one by one by hand. can do.

The ultra-thin glass processing method of the present invention further includes a step of over-curing the cured adhesive 20a (S545) before the step of separating the first ultra-thin glass 11 and the second ultra-thin glass 12 (S550). can include

Prior to the process of separating the first ultra-thin glass 11 and the second ultra-thin glass 12 (S550), the cured adhesive 20a may be overcured (S545). When the adhesive 20 or the cured adhesive 20a is overcured, the bonding strength of the adhesive 20 may be lower than that of the cured adhesive 20a, and through this, the first ultra-thin glass 11 and the second In the process of separating the ultra-thin glass 12 (S550), the first ultra-thin glass 11 and the second ultra-thin glass 12 can be easily separated into individual sheets.

On the other hand, in the ultra-thin glass processing method of the present invention, the first ultra-thin glass 11 and at least one second ultra-thin glass 12 are laminated to form the ultra-thin glass laminate 50, and then the adhesive 20 is mainly cured. Process (S490); may be further included. In some cases, after the ultra-thin glass laminate 50 is formed, the entire adhesive 20 is cured, and between the first ultra-thin glass 11 and the second ultra-thin glass 12 in the ultra-thin glass laminate 50 and/or Alternatively, bonding strength between the second ultra-thin glass 12 and the second ultra-thin glass 12 may be further improved.

As described above, in the present invention, an ultra-thin glass laminate can be formed by bonding a plurality of ultra-thin glasses by interposing an adhesive between the plurality of ultra-thin glasses (UTG) through the adhesive providing unit, and thus cutting and processing the ultra-thin glass, Processing such as edge processing can be facilitated, and ultra-thin glass can be processed into desired sizes and shapes without breaking defects to suit the use of various products. In addition, a plurality of ultra-thin glasses can be simultaneously processed through the ultra-thin glass laminate, and thus ultra-thin glass having excellent processing uniformity such as size can be processed, and the number of processing times is less than the number of ultra-thin glasses to be processed. The process time for processing glass can be shortened. In addition, by pressurizing the ultra-thin glass through the elastic deformation of the elastic membrane by the fluid supply, a uniform pressure can be provided over the entire surface of the ultra-thin glass, and thus the height of the ultra-thin glass laminate can be uniform as a whole, and a plurality of A uniform pressure can be provided on the ultra-thin glass as a whole, and leaking out of the ultra-thin glass while the adhesive interposed between the plurality of ultra-thin glasses is spread by the pressing force can also be suppressed or prevented. In addition, the first adhesive provided on the edge of the ultra-thin glass is first cured by irradiating light from the side of the plurality of ultra-thin glass through the first light source unit before or during pressing the ultra-thin glass, thereby curing the ultra-thin glass. It is possible to prevent a portion of the first adhesive provided on the edge portion from being uncured, and to effectively prevent leakage of the adhesive spreading from the central portion to the periphery between the plurality of ultra-thin glasses. In addition, by moving the first light source unit in the stacking direction of the plurality of ultra-thin glasses, the newly applied and uncured first adhesive may be irradiated with light according to the number of stacked layers of the plurality of ultra-thin glasses, and thus the uncured portion. It is possible to effectively cure the first adhesive of all heights without In addition, it is also possible to prevent deterioration in adhesive strength due to overcuring of the first adhesive by continuously irradiating light to the already cured first adhesive.

The meaning of "on" used in the above description includes the case of direct contact and the case of not directly contacting but located opposite to the upper or lower surface, as well as partially opposite to the upper or lower surface as a whole. It is also possible to be located oppositely, and it is used in the sense of facing away from each other or directly contacting the upper or lower surface. Accordingly, "on the stage" may be the surface of the stage (upper surface or lower surface), or may be on the surface of the ultra-thin glass provided on the surface of the stage.

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the above embodiments, and common knowledge in the field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Those who have will understand that various modifications and other equivalent embodiments are possible from this. Therefore, the technical protection scope of the present invention should be determined by the claims below.

5: laminate unit 10: ultra-thin glass
11: first ultra-thin glass 12: second ultra-thin glass
20: adhesive 20a: cured adhesive
21: first adhesive 21a: cured first adhesive
22: second adhesive 22a: cured second adhesive
50: ultra-thin glass laminate 100: ultra-thin glass processing device
110: stage 120: transfer unit
130: adhesive supply unit 131: first adhesive discharge unit
132: second adhesive dispensing unit 140: pressing unit
141: elastic membrane 142: body portion
143: fluid supply unit 151: first light source unit
152: second light source unit 155: first light source driver
160: spacing control unit 171: cutting wheel

Claims (18)

a stage supporting ultra-thin glass;
a conveying unit for conveying the ultra-thin glass onto the stage;
an adhesive providing unit providing adhesive on the ultra-thin glass supported on the stage;
a pressing unit providing a pressing force on a plurality of ultra-thin glasses laminated with the adhesive interposed therebetween;
a first light source unit irradiating light of a first wavelength in a lateral direction of the plurality of ultra-thin glasses; and
A second light source unit provided on the stage and irradiating light of a second wavelength different from the first wavelength from an upper portion of the stage;
The pressing part includes an elastic film that is elastically deformed and presses the ultra-thin glass,
The adhesive providing unit provides a first adhesive cured by light of the first wavelength to an edge portion of the ultra-thin glass, and provides a second adhesive cured by light of a second wavelength to a central portion of the ultra-thin glass. Ultra-thin glass processing device. delete The method of claim 1,
The ultra-thin glass processing apparatus further comprising a; first light source driving unit for moving the first light source unit in a stacking direction of the plurality of ultra-thin glasses. delete The method of claim 1,
The pressing unit further includes a body portion in which an edge portion of the elastic membrane is fixed and supported,
The ultra-thin glass processing device according to claim 1 , wherein the elastic membrane is expanded by a fluid supplied between the elastic membrane and the surface of the body portion. The method of claim 5,
The ultra-thin glass processing device wherein the fluid is supplied to the central portion of the elastic membrane. The method of claim 1,
The ultra-thin glass processing apparatus further comprising: a gap adjusting unit for adjusting a distance between the stage and the pressing unit by moving at least one of the stage and the pressing unit. The method of claim 1,
The ultra-thin glass processing device further comprising a; processing unit for processing the ultra-thin glass laminate in which the plurality of ultra-thin glasses are stacked. The method of claim 8,
The ultra-thin glass has a thickness of 10 to 150 μm,
The ultra-thin glass laminate is formed by stacking 2 to 50 sheets of the ultra-thin glass. supporting the first ultra-thin glass on a stage;
providing an adhesive on the first ultra-thin glass supported on the stage;
providing a second ultra-thin glass on the adhesive; and
Including; providing a pressing force on the second ultra-thin glass using a pressing part,
The process of providing the pressing force includes a process of elastically deforming the elastic membrane of the pressing unit,
The process of providing the adhesive,
providing a first adhesive to an edge portion of the first ultra-thin glass or the second ultra-thin glass; and
providing a second adhesive to the central portion of the first ultra-thin glass or the second ultra-thin glass;
curing the first adhesive by irradiating light of a first wavelength in a lateral direction of the ultra-thin glass laminate in which the first ultra-thin glass and the second ultra-thin glass are laminated; and
The ultra-thin glass processing method further comprising curing the second adhesive by irradiating light of a second wavelength different from the first wavelength from an upper portion of the stage. The method of claim 10,
The process of providing the pressing force further includes bringing the elastic film into contact with the second ultra-thin glass,
The process of elastically deforming the elastic membrane is performed by expanding the elastic membrane through fluid supply between the body of the pressing unit and the elastic membrane. The method of claim 11,
In the process of elastically deforming the elastic membrane, the ultra-thin glass processing method of supplying the fluid to the central portion of the elastic membrane. delete The method of claim 10,
The process of curing the first adhesive is performed before the process of elastically deforming the elastic film or concurrently with the process of elastically deforming the elastic film. The method of claim 10,
The ultra-thin glass processing method further comprising moving a first light source unit for irradiating light of the first wavelength in a lateral direction of the ultra-thin glass laminate in a lamination direction of the ultra-thin glass laminate. The method of claim 10,
The process of curing the second adhesive is performed after the process of curing the first adhesive. The method of claim 11,
The ultra-thin glass processing method further comprising: narrowing the distance between the stage and the pressing part after elastically deforming the elastic membrane. The method of claim 10,
The ultra-thin glass processing method further comprising processing the ultra-thin glass laminate in which the first ultra-thin glass and the second ultra-thin glass are laminated.

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