KR102625135B1 - Method for manufacturing side surface of ultra thin glass, jig for manufacturing side surface of glass and glass manufacturing apparatus including the same - Google Patents

Abstract

A method for processing the side of ultra-thin glass to improve the strength of the glass by processing the side of the glass, a jig for processing the side of the glass, and glass processing equipment including the same are provided. The side processing method of the glass includes the steps of mounting and fixing one or more glasses on a jig, immersing the fixed glass in an etchant, a first rotation step of rotating the glass in one direction in the etchant, and It includes a second rotation step of rotating in the other direction within the etchant.

Description

Side processing method of ultra-thin glass, jig for side processing of glass, and glass processing equipment including the same

The present invention relates to a method for processing the side of ultra-thin glass, a jig for processing the side of glass, and glass processing equipment including the same. In detail, it relates to a processing method of ultra-thin glass that improves the strength of the glass by processing the side of the glass after the raw glass is cut into glass cells, a jig for processing the side of the glass, and glass processing equipment including the same.

Thanks to technological advancements, electronic devices such as smartphones and tablet PCs are gradually becoming thinner. In addition, consumers are demanding a wide screen for electronic devices and a high screen-to-body ratio in terms of aesthetics, and accordingly, there is a trend in which the entire front of electronic devices is made of glass.

Glass material has been used as a front cover window material for displays for a long time due to its high light transmittance. However, since general glass is vulnerable to external shock and can easily break or scratch, it is essential to apply tempered glass with improved mechanical strength to form the front of electronic devices such as smartphones with glass.

Meanwhile, research has recently been conducted on foldable displays and rollable displays, and electronic devices equipped with these special displays are also being released.

To implement a foldable display, etc., a flexible material, such as a plastic material such as polyimide film, is used instead of glass as the cover window of the display. However, polyimide films, etc. have lower light transmittance than glass, which may result in light loss. In addition, because foldable displays repeatedly fold a specific location of the cover window, there is a problem of cracks occurring in the area where the folding line is formed or permanent fold marks remaining.

Korean Patent No. 10-1661278 (2016.09.29.)

In this regard, there is an urgent need for the development of ultra-thin glass (UTG) that has high mechanical strength and can be applied to special displays such as foldable displays or rollable displays. Ultra-thin glass generally refers to a glass material with a thickness of 100㎛ or less. Ultra-thin glass has a higher light transmittance and a thinner thickness than plastic materials, so the folding of the folding line may not be easily visible, and even bending, rolling, or folding may be possible.

However, ultra-thin glass has the problem of being damaged during processing due to its excessively thin thickness. Because of this, the yield of ultra-thin glass is not very high, which may cause the price of ultra-thin glass to rise. For this reason, various studies have been conducted to improve the physical/chemical strength of ultra-thin glass.

For example, Patent Document 1 forms a glass laminate (laminated body manufacturing process), cuts it to prepare small-sized glass cells (laminated body cutting process), and then processes the roughness of the cut surface (edge surface chamfering process). commences. In addition, a technology for processing the edge surface of glass into a specific shape (chemical surface polishing process) and a technology for increasing the strength of glass by forming a so-called C angle are disclosed. Afterwards, the glass is cleaned, the laminate is separated, and the process of preparing the glass into individual sheets is started.

Patent Document 1 teaches that chipping can be removed by processing the edge surface, that is, the side surface, of a cut glass cell (or glass laminate cell), thereby improving the strength of the glass. In addition, the etching rate is disclosed as a factor that affects the side processing of glass using an etchant. Patent Document 1 presents a concept in which the sides of laminated glasses are immersed in an etching solution and rotated to process the sides, but there is a problem in that it is difficult to achieve more uniform etching of the glass using only the disclosure of Patent Document 1.

Accordingly, the problem to be solved by the present invention is to provide a glass side processing technology that can respond to ultra-thin glass, and a glass side processing method that can more precisely process the side of the glass into a desired shape.

In addition, another problem to be solved by the present invention is to provide a glass side processing jig that can be applied to the glass side processing method according to the present invention.

Another problem that the present invention aims to solve is to provide glass side processing equipment that can be applied to the glass side processing method according to the present invention.

The problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below.

The side processing method of glass according to an embodiment of the present invention to solve the above problem includes mounting and fixing one or more glasses on a jig, immersing the fixed glass in an etchant, and working the glass in an etchant. It includes a first rotation step of rotating in one direction, and a second rotation step of rotating the glass in the other direction within an etchant.

The second rotation step may include turning the glass over and rotating the glass in the one direction in an etchant.

Here, the rotation directions of the first rotation step and the second rotation step may be the same.

The jig may include an upper plate and a lower plate spaced apart from each other, a rotation unit coupled to one or more of the upper plate and the lower plate to rotate, and a hinge unit connected to an end of the rotation unit to enable rotation.

At this time, the step of turning over the glass may be performed through vertical movement and rotation of the hinge unit.

Additionally, the jig may include an upper plate and a lower plate spaced apart from each other, and a buffer plate disposed between the upper plate and the lower plate.

In this case, in the step of fixing the glass in the thickness direction, the buffer plate may be interposed between the upper plate and the glass or between the lower plate and the glass.

In some embodiments, the first rotation step is performed before the second rotation step, and the execution time of the first rotation step may be longer than or equal to the performance time of the second rotation step.

In some embodiments, the first rotation step is performed before the second rotation step, and the rotation speed of the first rotation step may be greater than or equal to the rotation speed of the second rotation step.

In some embodiments, mixing the etchant using bubbles may be further included.

In some embodiments, mixing the etchant using a pump may be further included.

The jig includes a first plate and a second plate spaced apart from each other with the glass interposed therebetween, the first rotation step is performed by a first rotation unit coupled to the first plate, and the second rotation step Can be performed by a second rotation unit coupled to the second plate.

The glass side processing jig according to an embodiment of the present invention for solving the above other problems includes an upper plate and a lower plate spaced apart from each other, one or more posts for adjusting and fixing the separation distance between the upper plate and the lower plate, and one of the upper plate and the lower plate. It includes a rotation unit that rotates in conjunction with one or more units.

In some embodiments, the jig may further include one or more buffer plates disposed between the upper plate and the lower plate.

Additionally, the upper or lower plate may have an opening that does not overlap with the buffer plate.

In some embodiments, the jig may further include a hinge unit connected to an end of the rotation unit and configured to rotate.

Here, the hinge unit may include a hinge part that rotates the rotation unit based on the hinge axis, and a rod part that moves the hinge part in parallel.

The glass side processing equipment for solving the other problem above includes an upper plate and a lower plate that are spaced apart from each other, one or more posts that fix the separation distance between the upper plate and the lower plate, and rotation that is combined with at least one of the upper plate and the lower plate to rotate. It includes a glass side processing jig including a unit, and a bath configured to accommodate an etchant.

The glass side processing jig may be inserted into the bath and configured to be movable.

Additionally, the glass side processing jig may be configured to vibrate.

In some embodiments, the glass side processing equipment may further include a bubble generator disposed in the bath.

In addition, the bath may further include a circulation flow path, and the glass side processing equipment may further include a pump that flows the etchant through the circulation flow path.

The glass side processing jig may be configured to rotate in a direction perpendicular to the bottom surface of the bath.

The rotation unit may include a first rotation unit that is attachable to and detachable from the upper plate, and a second rotation unit that is attachable to and detachable from the lower plate.

Specific details of other embodiments are included in the detailed description.

According to embodiments of the present invention, the strength of glass can be improved through side processing of the glass.

Effects according to embodiments of the present invention are not limited to the contents exemplified above, and further various effects are included in the present specification.

1 is a flowchart showing a method for processing the side of glass according to an embodiment of the present invention.
Figures 2 to 8 are diagrams for explaining a method of processing the side of glass according to the embodiment of Figure 1.
Figure 9 is a flowchart showing a method of processing the side of glass according to another embodiment of the present invention.
Figure 10 is a perspective view showing a glass side processing jig in the glass side processing method according to the embodiment of Figure 9.
Figure 11 is an exploded perspective view showing a glass side processing jig according to another embodiment of the present invention.
Figure 12 is an exploded perspective view showing a glass side processing jig according to another embodiment of the present invention.
Figure 13 is a schematic diagram showing a glass side processing facility according to another embodiment of the present invention.
Figure 14 is a schematic diagram showing a glass side processing facility according to another embodiment of the present invention.
15 to 19 are schematic diagrams showing glass side processing equipment according to further embodiments of the present invention, respectively.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms, and only the embodiments serve to ensure that the disclosure of the present invention is complete, and those skilled in the art It is provided to fully inform the person of the scope of the invention, and the present invention is only defined by the scope of the claims. That is, various changes may be made to the embodiments presented by the present invention. The embodiments described below are not intended to limit the embodiments, but should be understood to include all changes, equivalents, and substitutes therefor.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings that can be commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless clearly specifically defined.

As used herein, 'and/or' includes each and every combination of one or more of the mentioned items. Additionally, the singular form also includes the plural form unless specifically stated in the phrase. As used herein, 'comprises' and/or 'comprising' do not exclude the presence or addition of one or more other components in addition to the mentioned components. The numerical range expressed using 'to' indicates a numerical range that includes the values written before and after it as the lower limit and upper limit, respectively. ‘About’ or ‘approximately’ means a value or numerical range within 20% of the value or numerical range stated thereafter.

The size, thickness, width, length, etc. of components shown in the drawings may be exaggerated or reduced for convenience and clarity of explanation, so the present invention is not limited to the form shown.

Spatially relative terms such as 'above', 'upper', 'on', 'below', 'beneath', and 'lower' are used in the drawing. As shown, it can be used to easily describe the correlation between one element or component and other elements or components. Spatially relative terms should be understood as terms that include different directions of the element when used in addition to the direction shown in the drawings. For example, when an element shown in a drawing is turned over, an element described as 'below or beneath' another element may be placed 'above' the other element. Accordingly, the illustrative term 'down' may include both downward and upward directions.

Additionally, in this specification, the first direction (X) refers to an arbitrary direction in a plane, and the second direction (Y) refers to another direction intersecting the first direction (X) in the plane. Additionally, the third direction (Z) refers to a direction perpendicular to the plane.

Hereinafter, the present invention will be described in detail with reference to the attached drawings.

1 is a flowchart showing a method for processing the side of glass according to an embodiment of the present invention. The side processing method of glass according to an embodiment of the present invention includes cutting a glass cell (S110), forming a glass laminate (S120), mounting and fixing the glass laminate on a jig (S130), and forming a glass laminate (S130). It includes a step of immersing in an etchant (S140), a step of rotating the glass laminate in one direction (S150), and a step of rotating the glass laminate in the other direction (S160).

First, the mother glass is cut into glass cells (S110). The cutting method is not particularly limited, and examples include scribing cutting using a scribing wheel, plasma cutting using plasma, and waterjet cutting, but the present invention is not limited thereto.

Although not shown in the drawing, a step of processing the glass into a desired shape after cutting the glass may be further included. For example, as shown in FIG. 2, the vicinity of each corner of a roughly rectangular glass cell may be rounded or chamfered. For another example, glass may be processed into a circular shape rather than a rectangular shape, or may be processed into a polygonal shape such as a pentagon, hexagon, or octagon.

Figure 2 is a schematic diagram showing the step (S120) of forming a glass laminate. Referring further to FIG. 2, a plurality of glasses (G) are stacked to form a glass laminate (GL) or a glass laminate (S120).

In this step, the thickness of each glass G may be about 100 μm or less, or about 90 μm or less, or about 80 μm or less, or about 70 μm or less, or about 60 μm or less, or about 50 μm or less.

An adhesive layer (not shown) may be disposed between each glass (G). The adhesive layer may be a photocurable adhesive that is cured by irradiation of light such as ultraviolet rays, or a photodecomposable adhesive that is decomposed or at least becomes soft by irradiation of light. Glasses (G) overlapping in the third direction (Z) may be fixed to each other through an adhesive layer. In some embodiments, the adhesive layer disposed between the adjacent glasses (G) causes the adjacent glasses (G) to be separated by a predetermined distance in the third direction (Z), such as about 0.1 μm or more, or about 0.3 μm or more, or about 0.5 μm. They may be spaced apart by more than, or about 1.0 μm or more, or about 5 μm or more.

In addition, Figure 2 illustrates a case where approximately 20 glasses (G) are stacked to form a glass laminate (GL), but the present invention is not limited thereto, and the glass laminate (GL) is formed in the third direction (Z). It may include overlapping or stacking about 5 or less glasses (G), about 10 or less glasses (G), about 25 or more glasses (G), or about 50 or more glasses (G).

In another embodiment, instead of forming a glass laminate (GL) by stacking a plurality of glasses (G), a side processing method of glass may be performed using one glass (G). That is, as a preferred embodiment, a glass laminate (GL) is formed by stacking a plurality of glasses (G), and side processing is performed using the glass laminate (GL). In order to explain the case as an example, the glass (G) and the glass Although it is referred to as laminate (GL), side processing may be performed using one raw glass or one glass cell. Therefore, the term 'glass' used in this specification should be understood to include not only a single sheet of glass (G) but also glass laminate (GL).

Meanwhile, the side processing method of glass according to this embodiment illustrates the case of cutting raw glass into glass cells (G) (S110) and then forming glass laminate (GL) (S120), but the present invention is limited to this. It doesn't work. In another embodiment, in order to improve the efficiency of the glass adhesion process, a glass laminate may be formed using raw glass and then a step of cutting the glass laminate may be performed.

Although not shown in the drawing, a step of physically processing the side surfaces of the laminated glass laminate (GL) may be further included. By polishing the side of the glass laminate (GL), the roughness can be reduced or the surface roughness can be made uniform. Known methods can be used to polish or process the side surfaces.

In this step, the side surfaces of each glass G may be extended in the thickness direction, for example, the third direction Z.

Figure 3 is an exploded perspective view showing the glass side processing jig 11 according to an embodiment of the present invention. Referring further to FIG. 3, the glass laminate (GL) is interposed between the lower plate 111 and the upper plate 121 of the jig 11 and fixed (S130).

The glass side processing jig 11 includes the lower plate 111 and the upper plate 121 spaced apart from each other in the third direction (Z), and one or more posts configured to adjust and fix the separation distance between the lower plate 111 and the upper plate 121. 301, one or more buffer plates 211 and 221 interposed between the lower plate 111 and the upper plate 121, and a rotation unit 401 coupled to at least one of the lower plate 111 and the upper plate 121. It may further include.

The lower plate 111 and the upper plate 121 each have a plate shape and may have substantially the same shape. The lower plate 111 and the upper plate 121 cover the lower and upper surfaces of the glass laminate GL, respectively, and are rotatable in the horizontal direction (e.g., the direction to which the first direction (X) and the second direction (Y) belong). It may be a part that forms the body of the configured glass side processing jig 11. The lower plate 111 and the upper plate 121 may each be made of a metal material that is substantially non-reactive to any etchant or has significantly lower reactivity than silicate-containing glass.

The lower plate 111 and the upper plate 121 may have a lower through hole 111h and an upper through hole 121h, respectively. The lower through hole 111h is a hole or opening that penetrates the lower plate 111 in the third direction (Z), and the upper through hole 121h is a hole or opening that penetrates the upper plate 121 in the third direction (Z). It can be. The post 301 may be at least partially inserted into the lower through hole 111h and the upper through hole 121h.

The post 301 may be configured to adjust the separation distance between the lower plate 111 and the upper plate 121. As will be described later, the glass laminate (GL) mounted on the glass side processing jig 11 may be immersed in an etching solution and the side surface may be chemically processed by the etching solution. Therefore, in order to prevent etching of unintended areas, such as the lower and upper surfaces of the glass laminate (GL), the glass laminate (GL) and the lower and upper plates 121 must be in close contact so that the lower and upper surfaces of the glass laminate (GL) are not exposed. It is important.

In an exemplary embodiment, the post 301 may include a bolt member 311 and a nut member 321 whose length in the third direction (Z) can be adjusted. The bolt member 311 may be inserted from the upper plate 121 side and disposed to penetrate the upper through hole 121h and the lower through hole 111h. Additionally, the nut member 321 may be coupled to the bolt member 311 penetrated through the lower through hole 111h. Through this, the lower plate 111, the upper plate 121, and the glass laminate GL interposed between the head portion of the bolt member 311 and the nut member 321 are firmly fixed in position in the third direction (Z). As will be described later, even when the glass side processing jig 11 rotates at high speed, the glass laminate GL can be fixed without leaving its position.

Figure 3 illustrates a case where a total of four posts 301 are arranged on both sides of the first direction (X) and both sides of the second direction (Y) of the glass laminate (GL), but the present invention is not limited thereto. Additionally, each post 301 may be arranged to be spaced apart from the glass laminate GL. The horizontal separation distance between the post 301 and the glass laminate GL may be at least about 0.5 mm, or at least about 1.0 mm, or at least about 1.5 mm, or at least about 2.0 mm, or at least about 3.0 mm, or at least about 5.0 mm. . If the post 301 and the glass laminate (GL) are in contact with each other or are too close to each other, the efficiency of the etchant contacting the side of the glass laminate (GL) decreases, and the side processing of the glass laminate (GL) becomes uneven, resulting in glass (G). The quality of reinforcement may deteriorate.

In some embodiments, the glass side processing jig 11 may further include a lower buffer plate 211 and/or an upper buffer plate 221 interposed between the lower plate 111 and the upper plate 121. The lower buffer plate 211 may be interposed between the glass laminate (GL) and the lower plate 111, and the upper buffer plate 221 may be interposed between the glass laminate (GL) and the upper plate 121. The lower buffer plate 211 and/or the upper buffer plate 221 may function to prevent the glass laminate GL from being displaced. In addition, when the lower plate 111 and/or the upper plate 121 are made of a metal material, damage to the glass laminate (GL) may occur when the glass laminate (GL) directly contacts the lower plate 111 and the upper plate 121. You can. Therefore, the lower buffer plate 211 and the upper buffer plate 221 can protect the glass laminate GL and minimize damage.

As described above, it is desirable that the lower and upper surfaces of the glass laminate (GL) are completely covered, and even when the jig (11) rotates at high speed, the position of the glass laminate (GL) in the horizontal direction must be completely fixed. do. Accordingly, the lower buffer plate 211 and/or the upper buffer plate 221 may be made of a material that is easy to adhere to the glass laminate GL and provides a predetermined friction force. The material of the lower buffer plate 211 and the upper buffer plate 221 may be selected depending on the components of the etchant, but for example, a fire-resistant synthetic resin with low reactivity to the etchant and a certain elasticity, such as silicone series. It may be synthetic resin. However, the present invention is not limited thereto.

In some embodiments, the planar size of the lower buffer plate 211 and/or the upper buffer plate 221 may be smaller than the lower plate 111 and the upper plate 121 and larger than the glass laminate GL. Additionally, the lower buffer plate 211 and the upper buffer plate 221 may be arranged so as not to overlap the lower through hole 111h and the upper through hole 121h in the third direction (Z).

The rotation unit 401 may be coupled to the upper plate 121 of the jig 11. The rotation unit 401 may rotate the jig 11 in the horizontal direction to which the first direction (X) and the second direction (Y) belong based on an axis extending approximately in the third direction (Z). Although not shown in the drawing, the rotation unit 401 may include a driver such as a motor.

By mounting the glass laminate GL on the glass side processing jig 11 having the above-described configuration, the position in the third direction Z and the horizontal direction can be firmly fixed.

Figure 4 is a schematic diagram showing the step (S140) of mounting the glass laminate (GL) on the glass side processing jig 11 and immersing it in the etchant (ET). Referring further to FIG. 4, the glass laminate (GL) is immersed in the etchant (ET) (S140).

The glass side processing equipment 1 according to this embodiment may include a bath 20 configured to accommodate the etchant (ET) and the glass side processing jig 11 described above. The etchant (ET) may be an etchant that is reactive or has excellent etching properties with the silicate-containing glass (G) or glass laminate (GL), or an etchant with a desired etching rate may be selected, and the present invention is not particularly limited. That is not the case. Although not shown in the drawing, the bath 20 may further include means for controlling the temperature of the etchant (ET) contained therein.

Figures 5 and 6 are schematic diagrams showing the first rotation step (S150) of rotating the glass laminate (GL) in one direction. Referring further to FIGS. 5 and 6, the glass laminate (GL) is fixed to the jig 11 and rotated in one direction (S150). Figure 5 and the like illustrate a case where the glass laminate (GL) is rotated clockwise in this step.

As in this step, the glass laminate (GL) is rotated in the etchant (ET) to etch the glass laminate (GL) at a predetermined etching rate, thereby etching the side surfaces of the glass (G) and the glass laminate (GL). The side of each glass (G) is processed to have an inclination and can be connected to the upper and lower surfaces of the glass (G). In other words, the side surface of each glass (G) whose side surface is selectively etched may include a surface extending in the third direction (Z) and an inclined surface. Accordingly, a roughly wedge-shaped valley may be formed between the plurality of glasses (G) stacked in the third direction (Z).

The rotation speed of the jig 11 in the first rotation step (S150) (or first etching step) may be appropriately selected depending on the required side shape of the glass (G), for example, about 60 rpm or more, or about 180 rpm. or more, or about 300 rpm or more, or about 600 rpm or more, or about 1,000 rpm or more.

When the glass laminate (GL) is rotated in one direction, for example, clockwise, a difference may occur in the degree to which the side of the glass laminate (GL) is etched for each position. For example, relatively more etching is performed on the side (hereinafter referred to as the first side) clockwise adjacent to a corner of the glass laminate (GL) (bottom left corner of FIG. 6), while at a corner of the glass laminate GL, etching is performed in a counterclockwise direction. Relatively less etching may be performed on the adjacent side (hereinafter referred to as the second side).

After this step is performed, as a non-limiting example, the first inclination angle θ1 of the inclined surface formed on the first side of each glass G may be larger than the second inclination angle θ2 of the inclined surface formed on the second side. . The term 'slope angle' refers to the angle formed by the inclined surface with respect to the surface direction of a certain glass (G) (i.e., the direction to which the first direction (X) and the second direction (Y) belong.

As another non-limiting example, the first penetration depth D1 of the first side of each glass G may be greater than the second penetration depth D2 of the second side. The term 'penetration depth' refers to the length in the horizontal direction in which a wedge-shaped valley is formed and indented inward compared to the side of the initial glass (G).

Figures 7 and 8 are schematic diagrams showing the second rotation step (S160) in which the glass laminate (GL) is rotated in the other direction. Referring further to FIGS. 7 and 8, the glass laminate (GL) is fixed to the jig 11 and rotated in the other direction (S160). Figure 7 and others illustrate a case where the glass laminate (GL) is rotated counterclockwise in this step.

Through the second rotation step (S160) (or the second etching step), the non-uniformity of etching for each location that occurred in the first rotation step (S150) can be resolved, and the etching uniformity of the glass (G) can be further improved.

For example, when the glass laminate (GL) is rotated in another direction, for example, counterclockwise, the side (hereinafter referred to as the third side) clockwise adjacent to a corner of the glass laminate (GL) (lower right corner in FIG. 8) ), relatively little etching may be performed, while the side adjacent to the corner in a counterclockwise direction (hereinafter referred to as the fourth side) may be relatively etched. That is, the glass laminate GL may be etched substantially uniformly throughout the first rotation step S150 and the second rotation step S160.

After this step is performed, as a non-limiting example, the third inclination angle θ3 of the inclined surface formed on the third side of each glass G is substantially equal to the fourth inclination angle θ4 of the inclined surface formed on the fourth side. Or, the difference is within about 10%, or within about 9%, or within about 8%, or within about 7%, or within about 6%, or within about 5%, or within about 4%, or within about 3%. It may be within, or within about 2%, or within about 1%.

The third inclination angle θ3 and the fourth inclination angle θ4 may be larger than the above-described first inclination angle θ1 and the second inclination angle θ2. The third inclination angle θ3 and the fourth inclination angle θ4 may be in a range of approximately 20 degrees to 45 degrees, or approximately 25 degrees to 40 degrees, or approximately 30 degrees to 35 degrees.

As another non-limiting example, the third penetration depth D3 of the third side of each glass G is substantially the same as the fourth penetration depth D4, or the difference is within about 10%, or about 9%. Within, or within about 8%, or within about 7%, or within about 6%, or within about 5%, or within about 4%, or within about 3%, or within about 2%, or within about 1% You can.

The third penetration depth (D3) and fourth penetration depth (D4) may be greater than the above-described first penetration depth (D1) and second penetration depth (D2). The third penetration depth D3 and the fourth penetration depth D4 are at least about 1.0 μm, or at least about 3.0 μm, or at least about 5.0 μm, or at least about 10 μm, or at least about 20 μm, or at least about 30 μm. , or about 50 μm or more, or about 100 μm or more. The upper limit of the third penetration depth D3 and the fourth penetration depth D4 may be about 1,000 μm. If the third penetration depth (D3) and the fourth penetration depth (D4) are too large, the length of the side slope of the glass (G) increases, the side of the glass (G) is processed into a sharp shape, or the glass (G) ) the lateral strength may be reduced.

The rotation speed of the jig 11 in the second rotation step (S160) may be lower than the rotation speed in the first rotation step (S150). The first side of the first rotation step (S150) described above is a position corresponding to the third side of the second rotation step (S160), and the second side of the first rotation step (S150) is a position corresponding to the third side of the second rotation step (S160). It may be a position corresponding to the fourth side of . As described above, the first rotation step (S150) is relatively dominated by etching of the first side (and third side), and the second rotation step (S160) is etching of the second side (and fourth side). This can be achieved relatively dominantly. However, since etching of the second side (and fourth side) is also performed in the first rotation step (S150), the total amount of etching (or etching rate, etch rate per unit time, etch wear degree, maximum etching amount) performed in the second rotation step (S160) degree, etching range) may be configured to be less than the total amount of etching performed in the first rotation step (S150).

In addition, the performance time of the second rotation step (S160) may be controlled by considering the composition of the glass (G) and the etchant (ET), the reactivity between them, the rotation speed, etc., but the performance time of the second rotation step (S160) may be performed shorter than the first rotation step (S150).

According to the glass side processing method according to this embodiment, the glass laminate (GL) is excellently adhered between the lower plate 111 and the upper plate 121 by adjusting the length of the post 301 in the third direction (Z). You can do it. Therefore, unintentional etching of the upper and lower surfaces of the glass laminate (GL) can be alleviated. In addition, it is possible to prevent process defects in which the glass laminate GL deviates from its position during the rotation step using the jig 11 and the lot has to be discarded.

In addition, when etching the glass laminate (GL) by immersing it in the etchant (ET), it was confirmed that the strength was slightly improved despite processing the side of the glass (G) when it was rotated in only one direction, and this problem was resolved. The present invention was completed by focusing on the fact that this is due to the non-uniformity of the side shape of the glass (G) at each position. That is, as in the side processing method of glass according to the present embodiment, the glass laminate (GL) is rotated in one direction and the other direction, but the side processing process of the glass is improved by applying predetermined process conditions at each rotation step, and the glass (GL) is rotated in one direction and the other direction. G) The strength of can be improved.

In another embodiment, the performance times of the first rotation step (S150) and the second rotation step (S160) are substantially the same, and the rotation speeds of the first rotation step (S150) and the second rotation step (S160) are substantially It may be the same.

Hereinafter, other embodiments of the present invention will be described. However, the description of the same or extremely similar configuration as the above-described embodiment will be omitted, and this will be clearly understood by those skilled in the art from the attached drawings.

Figure 9 is a flowchart showing a method of processing the side of glass according to another embodiment of the present invention. FIG. 10 is a perspective view showing the glass side processing jig 12 in the glass side processing method according to the embodiment of FIG. 9.

First, referring to FIG. 9, the side processing method of glass according to this embodiment includes the steps of cutting a glass cell (S210), forming a glass laminate (S220), and mounting and fixing the glass laminate on a jig (S230). ), immersing the glass laminate in an etchant (S240), rotating the glass laminate in one direction (S250), and rotating the glass laminate in the other direction (S260).

Since the steps of cutting the mother glass into glass cells (S210) and forming the glass laminate (S220) have been described above, redundant description will be omitted.

The glass side processing jig 12 according to this embodiment includes a lower plate 111, an upper plate 121, a post 301, one or more buffer plates 211, and rotation units 412 and 422, and a hinge unit ( It is different from the glass side processing jig 11 according to the embodiment shown in FIG. 3 in that it further includes 510 and 520).

The hinge units 510 and 520 include a first hinge unit 510 coupled to the lower portion of the glass laminate GL, i.e., the lower plate 111, and a second hinge unit coupled to the upper portion of the glass laminate GL, i.e., the upper plate 121. It may include a hinge unit 520. In addition, the first hinge unit 510 includes a first hinge portion 511 and a first rod portion 512, and the second hinge unit 520 includes a second hinge portion 521 and a second rod portion ( 522) may be included.

The first hinge portion 511 is coupled to the lower end of the axis of the first rotation unit 412 extending in the third direction (Z), and the second hinge portion 521 is coupled to the lower end of the axis of the first rotation unit 412 extending in the third direction (Z). It may be coupled to the top of the axis of the rotation unit 422. The first hinge portion 511 and the second hinge portion 521 can rotate surrounding components around each other (rotation operation, or hinge rotation). Specifically, the first hinge portion 511 and the second hinge portion 521 rotate the body of the jig 12 including the lower plate 111 and the upper plate 121 in approximately the second direction (Y) and the third direction ( Z) can be configured to rotate clockwise on the plane to which it belongs. The first hinge part 511 may be connected to the first rod part 512, and the second hinge part 521 may be connected to the second rod part 522. As described above, when the body of the jig 12 is configured to rotate clockwise in the plane to which the second direction (Y) and the third direction (Z) belong, the first rod portion 512 and the second rod portion ( 522) may be extended to one side and the other side of the second direction (Y), respectively. The operation of the hinge portions 511 and 521 will be described in detail along with the second rotation step (S260).

Since the other posts 301, lower buffer plate 211, and upper buffer plate have been described above, redundant descriptions will be omitted. By mounting the glass laminate (GL) on the glass side processing jig 12 having the above-described configuration, the position in the third direction (Z) and the position in the horizontal direction can be firmly fixed (S230).

Next, the glass laminate (GL) is immersed in an etchant (S240), and the glass laminate (GL) loaded on the jig 12 is rotated in one direction (a first rotation step, or a first etching step) (S250). Since these steps have been described above, redundant description will be omitted.

And after performing the first rotation step (S250), the second rotation step (or second etching step) (S260) is performed. In an exemplary embodiment, the second rotation step (S260) may include flipping the glass laminate (GL) (S261) and rotating the glass laminate (GL) in the one direction (S262).

That is, when this step is performed using a glass laminate (GL) including a plurality of glasses (G), in the step (S261) of turning over the glass laminate, the glass that was initially located at the top is located at the bottom, and the glass that was initially located at the bottom is placed at the bottom. The glass that was positioned may be positioned at the top.

In another embodiment, when this step is performed using a single glass (G), in the step of turning over the glass (S261), the upper surface of the initial glass becomes the lower surface of the glass, and the lower surface of the initial glass becomes the upper surface of the glass. It can be.

In other words, the side processing method of glass according to this embodiment has the same rotation direction in the first rotation step (S250) and the second rotation step (S260), but uses a glass side processing jig including hinge units 510 and 520. The point in which the glass laminate (GL) is turned over using (12) is different from the side processing method of the glass according to the embodiment such as in FIG. 1.

As described above, the jig 12 is connected to the first rotation unit 412 located at the bottom and the second rotation unit 422 located at the top, and has a hinge unit 510 that can rotate the main body of the jig 12 by 180 degrees. , 520). For example, the first rod portion 512 is moved at least partially upward, the second rod portion 522 is moved at least partially downward, and the first hinge portion 511 and the second hinge portion 521 are moved at least partially upward. ) is rotated clockwise around it, the glass laminate GL can rotate clockwise within the plane to which the second direction (Y) and the third direction (Z) belong. Accordingly, the glass laminate (GL) can be turned over by rotating 180 degrees compared to its initial state.

Then, the first rotation unit 412, which was initially located at the bottom, is located at the top, and the second rotation unit 422, which was initially located at the top, is located at the bottom, and then the first rotation unit 412 and the second rotation unit 422 ) can be used to rotate the glass laminate (GL) in the same direction as the first rotation step (S250).

Even if the rotation directions of the first rotation step (S250) and the second rotation step (S260) are the same, the glass laminate (GL) is in an overturned state, which has the effect of improving the processing uniformity for each side position of the glass laminate (GL). There is.

Figure 11 is an exploded perspective view showing the glass side processing jig 13 according to another embodiment of the present invention.

Referring to FIG. 11, the lower plate 113 and the upper plate 123 of the glass side processing jig 13 according to the present embodiment further include openings 113p and 123p, respectively. This is different from the glass side processing jig (11).

In an exemplary embodiment, the lower plate 113 may have a plurality of lower openings 113p, and the upper plate 123 may have a plurality of upper openings 123p. The lower opening 113p may penetrate the lower plate 113 in the third direction (Z), and the upper opening 123p may penetrate the upper plate 123 in the third direction (Z). As described above, the lower plate 113 has a lower through hole 113h, and the upper plate 123 has an upper through hole 123h. Posts 301 are provided in the lower through hole 113h and the upper through hole 123h. ) is inserted, while components such as posts may not be inserted into the lower opening (113p) and the upper opening (123p).

The lower opening 113p and/or the upper opening 123p may each have a slit shape extending approximately in the first direction (X). A plurality of lower openings 113p and/or upper openings 123p may be arranged to be spaced apart in the first direction (X) and the second direction (Y). Additionally, the lower opening 113p and the upper opening 123p may be located on one side and the other side of the glass laminate GL in the second direction Y. The lower opening 113p and the upper opening 123p may be positioned to non-overlap with the glass laminate GL, the lower buffer plate 211, and the upper buffer plate 221 in the third direction (Z).

11 illustrates a case where the lower opening (113p) and the upper opening (123p) have a slit shape, but the present invention is not limited thereto, and in other embodiments, the lower opening (113p) and/or the upper opening (123p) have a slit shape. It may be a polygonal shape such as a circle or square.

As described above, with the glass laminate (GL) mounted on the glass side processing jig 13, it is immersed in a bath (not shown) containing an etchant, and the jig 13 is rotated to process the side of the glass laminate (GL). can be performed. The fact that the side of the glass laminate (GL) is uniformly in contact with the etchant and etched is a very important factor affecting the strengthening quality of the glass.

At this time, the flow of the etchant may be affected depending on the size of the lower plate 113 and the upper plate 123 of the glass side processing jig 13 and the shape of the bath (not shown), and the etchant may be overlapped in the third direction (Z). The side surface of the glass laminate (GL) including a plurality of glasses may not be in uniform contact with the etchant. For example, in the glass laminate GL including a plurality of glasses overlapped in the third direction Z, a portion of the lower part of the glass laminate GL very adjacent to the lower plate 113, and/or the upper plate 123 ), the upper portion of the glass laminate (GL) very adjacent to the glass laminate (GL) is less in contact with the etchant than the approximately central portion in the third direction (Z) of the glass laminate (GL), and thus a difference in the etching rate may occur.

The glass side processing jig 13 according to the present embodiment has a lower plate 113 and/or an upper plate 123 each having a lower opening 113p and an upper opening 123p, and the etchant is applied through the openings 113p and 123p. The above problems can be alleviated by configuring it to be flexible.

Figure 12 is an exploded perspective view showing the glass side processing jig 14 according to another embodiment of the present invention.

Referring to FIG. 12, the post 304 of the glass side processing jig 14 according to the present embodiment does not include a bolt member and a nut member, but has a bar shape extending in the third direction (Z), as shown in FIG. 3 This is different from the glass side processing jig 11 according to the other embodiments.

The lower plate 114 may have a lower groove 114g formed on its upper surface, and the upper plate 124 may have an upper groove (not shown) formed on its lower surface. In addition, the post 304 can be inserted into the lower groove 114g and the upper groove (not shown) to separate the lower plate 114 and the upper plate 124 in the third direction (Z).

Figure 13 is a schematic diagram showing a glass side processing equipment 5 according to another embodiment of the present invention.

Referring to FIG. 13, the glass side processing equipment 5 according to this embodiment includes a bath 25, an etchant (ET) contained in the bath 25, and a glass side processing jig 11 configured to be immersed in the etchant (ET). The glass side processing equipment 1 according to the embodiment of FIG. 4 and the like include the glass laminate (GL) loaded on the This is different.

In the process of etching the glass laminate (GL) by immersing the glass laminate (GL) and the jig 11 in the etchant (ET), the etchant (ET) contains by-products or The concentration of foreign substances may increase. In particular, although the present invention is not limited thereto, if the glass side processing jig 11 includes a buffer plate made of synthetic resin, further contamination of the etchant (ET) may occur. Therefore, the glass side processing equipment 5 according to this embodiment is configured so that the jig 11 can move or vibrate to induce mixing of the etchant (ET) and increase the concentration uniformity of the etchant (ET) to increase the strengthening efficiency of the glass. can increase.

Figure 14 is a schematic diagram showing a glass side processing equipment 6 according to another embodiment of the present invention.

Referring to FIG. 14, the glass side processing equipment 6 or the glass side processing system according to the present embodiment is performed using a single sheet of glass (G) rather than a glass laminate in which a plurality of glasses are stacked, as shown in FIG. 4. This is different from the glass side processing equipment (1) according to the embodiment.

Figure 15 is a schematic diagram showing a glass side processing equipment 7 according to another embodiment of the present invention.

Referring to FIG. 15, the glass side processing equipment 7 according to the present embodiment further includes a bubble generating unit 30 disposed in the bath 27, which is similar to the glass side processing equipment according to the embodiment of FIG. 4, etc. This is different from 1).

The bubble generating unit 30 may include a flow path portion 30a and a nozzle portion 30b. The passage portion 30a provides a passage extending in a horizontal direction, for example, the first direction (X), and the nozzle portion 30b may protrude from the passage portion 30a to form bubbles in the etchant ET. The bubble generating unit 30 may be located near the bottom of the bath 27. Specifically, the bubble generating unit 30 may be located lower than the glass side processing jig 11.

Although not shown in the drawing, the flow path portion 30a of the bubble generating portion 30 is connected to a gas storage portion (not shown), etc., and can discharge gas provided from the gas storage portion. The type of gas is not particularly limited, but may be an inert gas such as nitrogen or argon, or air.

The method of processing the side of glass using the glass side processing equipment 7 according to the present embodiment includes rotating the glass laminate (GL) in one direction and/or the other direction and at least partially simultaneously with, or between the steps of rotating the glass laminate (GL) in one direction and/or the other direction. A step of mixing the etchant (ET) using the gas bubbles provided in (30) may be further included.

As described above, foreign substances discharged from the glass laminate (GL) and/or jig 11 may increase in the etchant (ET), which may reduce the side processing efficiency of the glass. However, as in the present embodiment, the etchant (ET) is sufficiently By mixing, the concentration uniformity of the etchant (ET) can be improved and the processing efficiency of glass can be increased.

Figure 16 is a schematic diagram showing a glass side processing facility 8 according to another embodiment of the present invention.

Referring to FIG. 16, the bath 28 of the glass side processing equipment 8 according to this embodiment includes a circulation flow path portion 28a, and the glass side processing facility 8 flows through the circulation flow path portion 28a. It is different from the glass side processing equipment 1 according to the embodiment of FIG. 4 in that it further includes a pump 40 configured to circulate the etchant (ET).

The circulation passage portion 28a of the bath 28 may provide a movement passage for the etchant ET. The etchant (ET) is circulated within the bath 28 through the pump 40, and through this, the concentration uniformity of the etchant (ET) can be improved and the processing efficiency of glass can be increased.

The part in the bath 28 where the etchant ET is sucked forms the suction part 28b, and the part where the etchant ET is sucked and circulated along the flow path 28a and discharged back into the bath 28 forms the suction part 28b. A discharge portion 28c may be formed. In an exemplary embodiment, there are a plurality of discharge portions 28c and may be arranged approximately uniformly to uniformly mix the etchant (ET) composition.

The method of side processing glass using the glass side processing equipment 8 according to this embodiment is at least partially simultaneous with the step of rotating the glass laminate GL in one direction and/or the other direction, or between the pump 40 ) may further include mixing the etchant (ET) using ET.

Figure 17 is a schematic diagram showing a glass side processing facility 9 according to another embodiment of the present invention.

Referring to FIG. 17, the glass side processing equipment 9 according to this embodiment includes a bath 29 and a glass side processing jig 19 that rotates within the bath 29, and the glass side processing jig 19 is different from the glass side processing equipment 1 according to the embodiment of FIG. 4 in that it is configured to rotate in a direction perpendicular to the bottom surface of the bath 29.

That is, the glass side processing jig 19 of the glass side processing equipment 9 according to the above-described embodiment of FIG. 4 is configured to rotate within the plane to which the first direction (X) and the second direction (Y) belong. The glass side processing jig 19 of the glass side processing equipment 9 according to this embodiment is a plane to which the second direction (Y) and the third direction (Z) belong, or the first direction (X) and the third direction ( Z) can be configured to rotate within the plane to which it belongs.

In some embodiments, the jig 19 may include one or more of a first rotation unit 409a and a second rotation unit 409b connected to an upper plate (or first plate) and a lower plate (or second plate), respectively. there is. In an exemplary embodiment, the jig 19 may be coupled to both the first rotation unit 409a and the second rotation unit 409b, and may be connected to both the first rotation unit 409a and the second rotation unit 409b. The above-described first rotation step and second rotation step may be performed sequentially. That is, the first rotation unit 409a and the second rotation unit 409b rotate clockwise within the plane to which the second direction (Y) and the third direction (Z) belong (e.g., first rotation step). , and then may be rotated counterclockwise (eg, a second rotation step) within the plane to which the second direction (Y) and the third direction (Z) belong.

Figure 18 is a schematic diagram showing a glass side processing facility 9' according to another embodiment of the present invention.

Referring to FIG. 18, in the glass side processing equipment 9' according to this embodiment, the first rotation unit 409a' and the second rotation unit 409b' can be mounted and detached from the jig 19, The difference from the glass side processing equipment 9 according to the embodiment of FIG. 17 is that the jig 19 is configured to rotate by either the first rotation unit 409a' or the second rotation unit 409b'.

For example, the jig 19 rotates clockwise within the plane to which the second direction (Y) and the third direction (Z) belong by the first rotation unit 409a' connected to the upper plate (or first plate). (e.g., first rotation step), and then the jig 19 is rotated in the second direction (Y) and third direction (Z) by the second rotation unit (409b') connected to the lower plate (or second plate). It may be rotated counterclockwise within the plane it belongs to (eg, a second rotation step).

Figure 19 is a schematic diagram showing a glass side processing facility 10 according to another embodiment of the present invention.

Referring to FIG. 19, the glass side processing equipment 10 according to this embodiment includes a first jig 11a and a second jig 11b, and a plurality of jigs 11a and 11b in one bath 20. ) is arranged and rotates, which is different from the glass side processing equipment according to the above-described embodiment.

Although the description has been made above with a focus on embodiments of the present invention, this is merely an example and does not limit the present invention, and those skilled in the art will be able to understand the present invention without departing from the essential characteristics of the embodiments of the present invention. It will be apparent that various modifications and applications not exemplified above are possible.

Therefore, the scope of the present invention should be understood to include changes, equivalents, or substitutes of the technical ideas exemplified above. For example, each component specifically shown in the embodiments of the present invention can be modified and implemented. And these variations and differences in application should be construed as being included in the scope of the present invention as defined in the appended claims.

111: lower plate
121: top plate
211: lower buffer plate
221: upper buffer plate
301: post
401: rotation unit
GL: Glass laminate

Claims (20)

Mounting and fixing one or more glasses on a jig;
Immersing the fixed glass in an etching solution;
A first rotation step of rotating the glass in one direction in an etchant; and
A side processing method of glass including a second rotation step of rotating the glass in the other direction within an etchant. According to paragraph 1,
The second rotation step is,
turning the glass over, and
Including rotating the glass in the one direction in an etchant,
A method of processing a side of glass in which the rotation directions of the first rotation step and the second rotation step are the same. According to paragraph 2,
The jig includes an upper plate and a lower plate spaced apart from each other, a rotation unit coupled to one or more of the upper plate and the lower plate to rotate, and a hinge unit connected to an end of the rotation unit and configured to rotate,
The step of turning the glass over is a side processing method of glass performed through vertical movement and rotation of the hinge unit. According to paragraph 1,
The jig includes an upper plate and a lower plate spaced apart from each other, and a buffer plate disposed between the upper plate and the lower plate,
In the step of fixing the glass in the thickness direction, the buffer plate is interposed between the upper plate and the glass or between the lower plate and the glass. According to paragraph 1,
The first rotation step is performed before the second rotation step,
A side processing method of glass wherein the performance time of the first rotation step is greater than the performance time of the second rotation step. According to paragraph 1,
The first rotation step is performed before the second rotation step,
A method of side processing glass wherein the rotation speed of the first rotation step is greater than the rotation speed of the second rotation step. According to paragraph 1,
A side processing method of glass further comprising mixing an etchant using air bubbles. According to paragraph 1,
A method of processing the side of glass further comprising mixing an etchant using a pump. According to paragraph 1,
The jig includes a first plate and a second plate spaced apart from each other with the glass interposed therebetween,
The first rotation step is performed by a first rotation unit coupled to the first plate,
The side processing method of glass wherein the second rotation step is performed by a second rotation unit coupled to the second plate. An upper and lower plate configured to be spaced apart from each other in one direction and with one or more glasses interposed between them;
One or more posts that adjust and fix the separation distance between the upper and lower plates; and
Includes a rotation unit that is coupled to and rotates at least one of the upper and lower plates,
The upper or lower plate has an opening,
The glass side processing jig wherein the opening is formed to completely non-overlap with the interposed glass in the one direction. According to clause 10,
A glass side processing jig further comprising one or more buffer plates disposed between the upper plate and the lower plate. According to clause 11,
The opening is a glass side processing jig that does not overlap the buffer plate in one direction. According to clause 11,
It further includes a hinge unit connected to an end of the rotation unit and configured to rotate, wherein the hinge unit includes:
A hinge portion that rotates the rotation unit based on the hinge axis, and
A glass side processing jig including a rod part that moves the hinge part in parallel. An upper plate and a lower plate that are spaced apart from each other in one direction and have at least one glass interposed between them, one or more posts that fix the separation distance between the upper plate and the lower plate, and a rotation that is coupled to any one or more of the upper plate and the lower plate. A glass side processing jig including a unit; and
Includes a bath configured to receive an etchant,
The upper or lower plate has an opening,
Glass side processing equipment wherein the opening is formed to completely non-overlap with the interposed glass in the one direction. According to clause 14,
The glass side processing jig is a glass side processing equipment configured to be inserted into the bath and moveable. According to clause 15,
The glass side processing jig is a glass side processing equipment configured to enable vibration. According to clause 14,
Glass side processing equipment further comprising a bubble generating unit disposed in the bath. According to clause 14,
The bath further includes a circulation flow path,
The glass side processing equipment further includes a pump that flows the etchant through the circulation flow path. According to clause 14,
The glass side processing jig is a glass side processing equipment configured to rotate in a direction perpendicular to the bottom surface of the bath. According to clause 14,
The rotating unit is,
A first rotation unit that is attachable and detachable from the top plate, and
Glass side processing equipment including the lower plate and a second rotation unit that is attachable and detachable.

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