KR20160144661A - Dividing method and dividing apparatus - Google Patents

Dividing method and dividing apparatus Download PDF

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Publication number
KR20160144661A
KR20160144661A KR1020150081086A KR20150081086A KR20160144661A KR 20160144661 A KR20160144661 A KR 20160144661A KR 1020150081086 A KR1020150081086 A KR 1020150081086A KR 20150081086 A KR20150081086 A KR 20150081086A KR 20160144661 A KR20160144661 A KR 20160144661A
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KR
South Korea
Prior art keywords
scribing
line
glass substrate
scribe
scribed
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KR1020150081086A
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Korean (ko)
Inventor
츠토무 우에노
Original Assignee
미쓰보시 다이야몬도 고교 가부시키가이샤
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Priority to KR1020150081086A priority Critical patent/KR20160144661A/en
Publication of KR20160144661A publication Critical patent/KR20160144661A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
    • B28D5/0005—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing
    • B28D5/0011—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing with preliminary treatment, e.g. weakening by scoring
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C03B33/023—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor the sheet or ribbon being in a horizontal position
    • C03B33/033—Apparatus for opening score lines in glass sheets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Abstract

According to the problem to be solved, a defect generated when scribing a glass product can be reduced. In the solution, according to the present invention, a dividing method comprises the following processes of: (a) forming a first scribe line on a first surface; (b) forming a second scribe line on a second surface; and (c) braking a glass substrate along the first scribe line, and braking the glass plate along the second scribe line. When the second scribe line is orthogonally projected on the first surface, the second scribe line crosses over the first scribe line.

Description

[0001] DIVIDING METHOD AND DIVIDING APPARATUS [0002]

The present invention relates to a dividing method and a dividing apparatus, and more particularly, to a dividing method and a dividing apparatus for dividing a glass substrate.

Currently, glass substrates are widely used in various parts of electronic products such as screens and cases. The surface of many glass substrates must undergo tempering treatment in order to meet the demand for use of the final product, and the scribing process is more difficult, and it is not easy to improve the yield rate. Therefore, how to scribe the glass substrate along the planned scribing line without generating defects on the surface of the glass substrate is an important issue in this industry.

1A and 1B, the glass substrate 1 includes a first surface 11 and a second surface 12 for the first surface 11. As shown in FIG. A known scribing method is a method of scribing the glass substrate 1 on the first surface 11 along the first scribing line 311 by inserting it from the rim 14 of the glass substrate 1, 1 scribe lines 321 are formed. However, since the scribing head 391 of the scribing apparatus collides with the rim 14 of the glass substrate 1 when the rim of the glass substrate 1 is infiltrated from the outside of the rim 14 of the glass substrate 1, The scribe pressure becomes unstable or vibrates and further a defect is generated in the rim 14 of the glass substrate 1 (as shown in Fig. 1B) so that the scribe head 391 scribes the glass substrate 1 The first scribe line 321 is incomplete, the scribe is deep or shallow (as shown in FIG. 1B), the crack is not controlled, and the scribe line does not advance along the planned scribe line This happens.

As shown in Fig. 2, in the case of scribing the glass substrate 1 along different scheduled scribing lines intersecting with each other in a plurality of mutually intersecting directions, in the known scribing method, first, along a plurality of first scribing lines 311 A plurality of first scribe lines 321 (as in Figs. 1A and 1B) are formed by scribing the first surface 11 of the glass substrate 1 from the rim 14. At this time, the glass substrate is not yet divided. Thereafter, the glass substrate 1 is scribed on the same first surface 11 along the plurality of second scribing lines 312 intersecting the first scribing line 311, And breaks the glass substrate along the first scribe line 321 and the second scribe line to form a glass product. However, in the known scribing method, in the case of scribing along the second scribing line 312, the scribing head 391 scribes the first scribing line 321 formed by scribing along the first scribing line 311 You must cross. In this case, when the scribing head 391 scribes along the second scheduled scribing line 312, the scribing pressure at the intersection 313 between the first scheduled scribing line 311 and the second scheduled scribing line 312 The scribe head 391 collides with the first scribing line 321 and vibrates and thus defects are generated in the vicinity of the intersection 313 and the scribe is incomplete and cracks are not controlled (Similar to the situation in which the scribe head 391 collides with the rim 14 of the glass substrate 1 as shown in Figs. 1A and 1B).

Taking these into consideration, it is a problem to be solved in the technical field of the present invention in the technical field of the present invention to avoid incomplete collision phenomenon and scribe in scribing a glass substrate and to avoid occurrence of defects in glass products.

SUMMARY OF THE INVENTION It is an object of the present invention to avoid the phenomenon of collision which occurs when scribing a glass substrate including a first surface and a second surface with respect to a first surface and incomplete scribing and to reduce the defects that occur when scribing a glass product A method of dividing a glass substrate, and a dividing device.

(A) forming a first scribe line by scribing the glass substrate on the first surface along a line to be scribed; and (b) ) Forming a second scribe line by scribing the glass substrate on the second surface along a second scribing line; (c) forming a first scribe line on the first surface, And breaking the glass substrate along the second scribe line on the second surface to form the glass product, wherein the step of projecting the second scribe line to the first surface The projection line of the line scheduled to be scribed intersects with the line scheduled to be scribed.

In order to achieve the above object, a breaking apparatus of the present invention comprises a first scribe head forming a first scribe line by scribing the glass substrate on the first surface along a first scribing line, A second scribe head forming a second scribe line by scribing the glass substrate on the second surface along a second scribe expected line, and a second scribe line on the first scribe line and on the second surface, And a braking device for forming the glass product by breaking the glass substrate along the second scribing line, wherein when the second scribing line is positively projected onto the first surface, The projection line crosses the first scheduled scribing line.

According to the present invention, it is possible to reduce defects that occur when scribing a glass product.

1A is a perspective view showing scribing of a glass substrate from a rim of a glass substrate by a known scribing method.
1B is a cross-sectional view of an actual scribe line when a glass substrate is scribed from a rim of a glass substrate by a known scribing method.
2 is a view showing scribing of a glass substrate along a plurality of intersecting scribing lines by a known scribing method.
Fig. 3 is a view showing scribing of a glass substrate along a line to be scribed by a plurality of scribing lines by the dividing method and the dividing device of the present invention. Fig.
4A is a view showing a first scribe line formed by scribing after forming a first initial crack by the dividing method and the dividing device of the present invention.
4B is a view showing that the first scribe line is formed by scribing after forming the first initial crack by the dividing method and the dividing device of the present invention.
4C is a view showing that the first scribe line is formed by scribing after forming the first initial crack by the dividing method and the dividing apparatus of the present invention.
5A is a view showing that a second scribe line is formed by scribing after forming a second initial crack by the dividing method and the dividing device of the present invention.
5B is a view showing that a second scribe line is formed by scribing after forming a second initial crack by the dividing method and the dividing device of the present invention.
FIG. 5C is a view showing that a second scribe line is formed by scribing after forming a second initial crack by the dividing method and the dividing device of the present invention. FIG.

(Mode for carrying out the invention)

As shown in Figure 3, the glass substrate 1 comprises a first surface 11 and a second surface 12 for the first surface 11. The division method for dividing the glass substrate of the present invention to form a plurality of glass products includes the following steps. Step (a): The first scribing line 521 is formed by scribing the glass substrate 1 on the first surface 11 along the first scribing line 511 (as shown in FIG. 4C). Step (b): The glass substrate 1 is scribed on the second surface 12 along the second scribing line 512 to form the second scribing line 522 (as shown in FIG. 5C). When the second scribing line 512 is positively projected on the first surface 11, the projection line of the second scribing line 512 intersects with the first scribing line 511. Step (c): A plurality of glass products are formed by breaking the glass substrate 1 along the first scribing line 521 and breaking the glass substrate 1 along the second scribing line 522. 3, when the second scribing line 512 is positively projected onto the first surface 11, the second scribing line 512 and the first scribing line 511 ) Is vertical, but the embodiment of the present invention is not limited thereby. In the step (c), a plurality of glass products can be formed by breaking the glass substrate 1 by a known braking method such as curving the glass substrate 1, for example.

3, in the step (a), the glass substrate 1 is scribed on the first surface 11 along the plurality of first scribing lines 511, so that a plurality of first scribes Line 521 is formed. A plurality of second scribe lines 522 are formed by scribing the glass substrate 1 on the second surface 12 along the plurality of second scribing lines 512 in the step (b). When the second scribing line 512 is positively projected onto the first surface 11, the projection lines of the plurality of second scribing lines 512 intersect with the plurality of first scribing lines 511.

As described above, according to the dividing method of the present invention, when the second scribing line 312 is scribed like the known dividing method, the first scribing line 321 formed by scribing along the first scribing line 311 The scribing pressure becomes unstable at the intersection 313 between the first scribing line 311 and the second scribing line 312 and the scribing head 391 is placed at the scribing completion point Defects such as scribe incomplete and cracks are not controlled and propagation do not occur in the vicinity of the intersection 313 because they collide and oscillate.

Further, the present invention can be carried out by the following method. 4A to 4C, in the step (a), when the scribing is started on the glass substrate, the first surface 11 is separated from all the rims 14 of the glass substrate 1 by a predetermined distance, The first initial cracks 541 shown in Fig. 4C are formed at the first initial position 531 shown in Fig. 4A of the first scribing line 511 in Fig. 4B, Likewise, the first scribing line 521 shown in Fig. 4C can be formed by scribing the glass substrate 1 along the first scribing line 511 from the first initial crack 541 on the first surface 11, .

5A to 5C, when scribing is started with respect to the second surface 12 of the glass substrate in step (b), the glass substrate 1 is moved away from all the edges 14 of the glass substrate 1 The second initial cracks 542 shown in Fig. 5C are formed in the second initial position 532 shown in Fig. 5A of the second scribing line 512 on the second surface 12, 5B, the glass substrate 1 is scribed along the second scribing line 512 from the second initial cracks 542 on the second surface 12, A second scribe line 522 is formed.

As described above, according to the dividing method of the present invention, when the glass substrate 1 is scribed into the inside from the outside of the rim 14 of the glass substrate 1 like the known dividing method, the scribe head 391 Since the scribe head 391 collides with the rim 14 of the glass substrate 1, the scribe pressure becomes unstable or vibrates, and furthermore, the rim 14 of the glass substrate 1 is defective, Defects such as incomplete scribing of the glass substrate 1 by the head 391 and progress of the crack without being controlled do not occur.

4C and 5C, when the glass substrate 1 is a tempered glass substrate, the glass substrate 1 has a tensile layer 101 and a first surface (not shown) adjacent to the tensile layer 101 11 and the second surface 12, as shown in FIG. The tensile layer 101 has a tensile internal stress and the compressive layer 102 has compressive internal stress. In this case, the depth d of the first initial crack 541 and the second initial crack 542 formed in the process (a) and the process (b) is considered to be smaller than the thickness t of the compressed layer 102. Thus, after the first initial cracks 541 and the second initial cracks 542 are formed, the cracks are immediately developed in the tensile layer 101, so that the glass substrate 1 is moved to the first scribing line 511, Or may be split along the second scribe line 512, or other defects. The depth D of the first scribing line 521 and the second scribing line 522 is greater than the thickness t of the compression layer 102 and a part thereof is drawn into the stretching layer 102. Thus, when the scribing operation is performed, it is advantageous that the cracks propagate along the first scribing line 521 and the second scribing line 522.

In the step (a) and the step (b), the breaking method of the present invention is a method in which a first initial crack 541 (first crack) is generated by irradiating a laser, polishing with a grindstone, scribing with a diamond, or scribing with a scribe wheel And the second initial cracks 542 are formed on the first scribe line 521 and the second scribe line 542 are formed on the first scribe line 521 and the second scribe line 542 by laser irradiation, grinding by a grindstone, scribing by diamond, A scribe line 522 can be formed.

3, the breaking apparatus of the present invention includes a first scribe head 591, a second scribe head 592, and a breaking apparatus (not shown, for example, a glass substrate 1) may be used so that a known brake device can be used). The first scribing head 591 scribes the glass substrate 1 on the first surface 11 along the first scribing line 511 to form a first scribing line 521 as shown in Fig. do. The second scribing head 592 scribes the glass substrate 1 on the second surface 12 along the second scribing line 512 to form a second scribing line 522 as shown in Fig. do. When the second scribing line 512 is positively projected onto the first surface 11, the projection line of the second scribing line 512 intersects with the first scribing line 511. 3, in general, when the second scribing line 512 is positively projected onto the first surface 11, the second scribing line 512 and the first scribing line 511, Is vertical. The breaking device breaks the glass substrate 1 along the first scribing line 521 on the first surface 11 and the second scribing line 522 on the second surface 12 to form a glass product.

3, the first scribing head 591 scribes the glass substrate 1 on the first surface 11 along a plurality of first scribing lines 511, The second scribing line 521 is formed and the second scribing head 592 scribes the glass substrate 1 on the second surface 12 along the plurality of second scribing lines 512 to form a plurality of 2 scribing lines 522 are formed and the plurality of second scribing lines 512 are positively projected on the first surface 11, the projection lines of the plurality of second scribing lines 512 are arranged in a plurality And intersects with the first scheduled line 511.

4A to 4C, the first scribing head 591 is spaced a predetermined distance from all the rims 14 of the glass substrate 1 and is spaced from the first scribing head 59 on the first surface 11, The first initial cracks 541 shown in FIG. 4C are formed in the first initial position 531 shown in FIG. 4A of the first surface 511 and the first initial cracks 541 shown in FIG. A first scribe line 521 as shown in Fig. 4C is formed by scribing the glass substrate 1 along the first scribing line 511 from the first initial crack 541 on the first scribing line 511. [

5A to 5C, the second scribing head 592 is spaced apart from all the rims 14 of the glass substrate 1 by a predetermined distance on the second surface 12, The second initial cracks 542 shown in FIG. 5C are formed in the second initial position 532 shown in FIG. 5A of the first surface 512 and the second initial cracks 542 shown in FIG. The second scribe line 522 as shown in Fig. 5C is formed by scribing the glass substrate 1 along the second scribing line 512 from the second initial crack 542 on the substrate.

When the glass substrate 1 is a tempered glass substrate, as shown in Figs. 4C and 5C, the glass substrate 1 is formed on the tensile layer 101 and the tensile layer 101 and the first surface 11 ) And a second surface (12). The tensile layer 101 has a tensile internal stress and the compressive layer 102 has compressive internal stress. In this case, the depth d of the first initial crack 541 and the second initial crack 542 formed by scribing by the first scribing head 591 and the second scribing head 592 is equal to the thickness of the compression layer 102 t. < / RTI > Thus, after the first initial cracks 541 and the second initial cracks 542 are formed, the cracks are immediately developed in the tensile layer 101, so that the glass substrate 1 is moved to the first scribing line 511, Or may be split along the second scribe line 512, or other defects. The depth D of the first scribing line 521 and the second scribing line 522 formed by scribing by the first scribing head 591 and the second scribing head 592 is greater than the thickness t of the compressing layer 102 And a part thereof is drawn into the tensile layer 102. Thus, it is advantageous that the cracks propagate along the first scribe line 521 and the second scribe line 522.

The first scribing head 591 and the second scribing head 592 of the scribing apparatus of the present invention are formed by irradiating a laser, grinding it with a grinding stone, scribing it with diamond, or scribing it with a scribing wheel, An initial crack 541 and a second initial crack 542 can be formed. In addition, the first scribing line 521 and the second scribing line 522 can be formed by irradiating a laser, polishing with a grindstone, scribing with a diamond, or scribing with a scribing wheel.

As described above, according to the dividing method and the dividing apparatus of the present invention, since a scribe head, a laser head or the like traverses a scribed opening at the time of scribing like a known dividing method, a phenomenon And scribing is incomplete and various kinds of defects of the glass product are prevented from occurring due to unstable scribing pressure or energy to be performed on the substrate or occurrence of vibration.

1: glass substrate
101: tensile layer
102: Compressed layer
11: First surface
12: Second surface
14: Border
311: First scheduled scribing line
312: Scheduled second line to be scribed
313: Intersection
321: 1st scribe line
391: Scribe head
511: First scheduled scribing line
512: Scheduled second line to be scribed
521: 1st scribe line
522: 2nd scribe line
531: First initial position
532: Second initial position
541: first initial crack
542: second initial crack
591: First scribe head
592: second scribe head

Claims (16)

A method of breaking a glass substrate that divides a glass substrate to form a plurality of glass products, the glass substrate having a first surface and a second surface to the first surface,
(a) forming a first scribe line by scribing the glass substrate on the first surface along a first scribing line; and
(b) forming a second scribe line by scribing the glass substrate on the second surface along a second scribing line; and
(c) breaking the glass substrate along the first scribe line on the first surface and breaking the glass substrate along the second scribe line on the second surface to form the glass product Including,
Wherein the projection line of the line scheduled to be scribed intersects the line scheduled to be scribed when the line scheduled to be scribed is regularly projected onto the first surface. The method according to claim 1,
Wherein said step (a) comprises forming a first initial crack at a first initial position of said first scribing line on said first surface, away from all edges of said glass substrate, The first scribing line is formed by scribing the glass substrate along the first scribing line from the first initial crack on the first scribing line,
(B) comprises forming a second initial crack at a second initial position of the line to be scribed second on the second surface, away from all edges of the glass substrate, Wherein the second scribing line is formed by scribing the glass substrate along the second scribing line from the second initial crack on the first scribing line. 3. The method of claim 2,
Wherein the glass substrate is a tempered glass substrate and includes a tensile layer and two compressive layers that are adjacent to the tensile layer and become the first surface and the second surface, Wherein the compression layer has a compressive internal stress, and the depths of the first initial crack and the second initial crack are smaller than the thickness of the compressed layer. The method of claim 3,
Wherein the first scribe line and the second scribe line have a depth greater than the thickness of the compressed layer and are drawn into the tensile layer. 3. The method of claim 2,
Wherein the second scribing line and the first scribing line are perpendicular to each other when the second scribing line is fixedly projected onto the first surface. 3. The method of claim 2,
Wherein the step (a) scribes the glass substrate on the first surface along a plurality of lines to be scribed, thereby forming a plurality of the first scribe lines,
The step (b) scribes the glass substrate on the second surface along a plurality of lines to be scribed, thereby forming a plurality of the second scribe lines,
Wherein the projection line of the line scheduled to be scribed intersects with the line scheduled to be scribed when the line scheduled to be scribed on the second surface is projected on the first surface. 3. The method of claim 2,
In the step (a) and the step (b), the first initial crack and the second initial crack are generated by laser irradiation, polishing with a grindstone, scribing with diamond, or scribing with a scribe wheel, Is formed. 3. The method of claim 2,
In the step (a) and the step (b), the first scribing line and the second scribing line may be formed by irradiating a laser, polishing with a grindstone, scribing with a diamond, or scribing with a scribing wheel. Is formed. A glass substrate cutting apparatus for cutting a glass substrate to form a plurality of glass products, the glass substrate having a first surface and a second surface with respect to the first surface,
A first scribe head forming a first scribe line by scribing the glass substrate on the first surface along a first scribing line,
A second scribe head forming a second scribe line by scribing the glass substrate on the second surface along a second scribe line,
And a braking device for breaking the glass substrate along the first scribe line on the first surface and the second scribe line on the second surface to form the glass product,
And the projection line of the line scheduled to be scribed intersects with the line scheduled to be scribed when the second scheduled line is positively projected onto the first surface. 10. The method of claim 9,
Wherein said first scribe head forms a first initial crack at a first initial position of said first scribe line on said first surface away from all edges of said glass substrate, The first scribing line is formed by scribing the glass substrate along the first scribing line from the first initial crack on the first scribing line,
The second scribe head forming a second initial crack at a second initial position of the second scribe line on the second surface away from all edges of the glass substrate, Wherein the second scribing line is formed by scribing the glass substrate along the second scribing line from the second initial crack on the first scribing line. 11. The method of claim 10,
Wherein the glass substrate is a tempered glass substrate and includes a tensile layer and two compressive layers that are adjacent to the tensile layer and become the first surface and the second surface, Wherein the compression layer has a compressive internal stress, and the depths of the first initial crack and the second initial crack are smaller than the thickness of the compressed layer. 12. The method of claim 11,
Wherein the first scribe line and the second scribe line have a depth greater than the thickness of the compressed layer and are drawn into the tensile layer. 11. The method of claim 10,
Wherein the second scribing line and the first scribing line are perpendicular to each other when the second scribing line is fixedly projected onto the first surface. 11. The method of claim 10,
The first scribing head scribes the glass substrate on the first surface along a plurality of the first scribing lines, thereby forming a plurality of the first scribing lines,
The second scribing head scribes the glass substrate on the second surface along a plurality of the second scheduled scribing lines to form a plurality of the second scribing lines, Wherein the projection line of the line scheduled to be scribed intersects with the line scheduled to be scribed when the projection is performed on the first surface. 11. The method of claim 10,
The first scribing head and the second scribing head may be formed by irradiating a laser beam, polishing with a grindstone, scribing with a diamond, or scribing with a scribing wheel so that the first initial crack and the second initial crack Wherein the first and second members are separated from each other. 11. The method of claim 10,
The first scribing head and the second scribing head may be formed by irradiating a laser beam, polishing with a grindstone, scribing with a diamond, or scribing with a scribing wheel so that the first scribing line and the second scribing line Wherein the first and second members are separated from each other.
KR1020150081086A 2015-06-09 2015-06-09 Dividing method and dividing apparatus KR20160144661A (en)

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