KR101696719B1 - Scribing method of assembled brittle substrates having steps - Google Patents

Scribing method of assembled brittle substrates having steps Download PDF

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Publication number
KR101696719B1
KR101696719B1 KR1020100089525A KR20100089525A KR101696719B1 KR 101696719 B1 KR101696719 B1 KR 101696719B1 KR 1020100089525 A KR1020100089525 A KR 1020100089525A KR 20100089525 A KR20100089525 A KR 20100089525A KR 101696719 B1 KR101696719 B1 KR 101696719B1
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KR
South Korea
Prior art keywords
panel
scribing
stepped
stepped portion
wheel
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KR1020100089525A
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Korean (ko)
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KR20120027754A (en
Inventor
장희동
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주식회사 탑 엔지니어링
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Priority to KR1020100089525A priority Critical patent/KR101696719B1/en
Publication of KR20120027754A publication Critical patent/KR20120027754A/en
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    • 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

The present invention relates to a scribing method for a brittle cemented panel having a stepped portion, in which a scribing method for a first panel and a second panel in which a stepped portion is formed and joined together comprises the steps of: Scrying step; Scribing the entire width from one side of the first panel with the cemented panel turned upside down; And lowering the scribing wheel to scribe the stepped region of the second panel.
According to the present invention having such a constitution, the method of performing scribing on the glass panel is changed to prevent breakage by preventing the bending due to the pressing force of the scribing wheel during scribing to produce a small panel, It is advantageous in that it can prevent the waste of the fuel cell and increase the yield.

Description

TECHNICAL FIELD [0001] The present invention relates to a scribing method of a brittle cemented panel having steps,

The present invention relates to a scribing method for a brittle cemented panel having a step, and more particularly, to a method for preventing a bending phenomenon of one panel of a cemented panel during scribing due to a stepped portion of a cemented panel and a pressing force of the scraping wheel The present invention relates to a scribing method for a cemented panel having a stepped portion.

In general, a liquid crystal display device includes a liquid crystal display panel including a driving circuit unit, a backlight unit disposed under the liquid crystal display panel to emit light to the liquid crystal display panel, a backlight unit supporting the backlight unit and the liquid crystal display panel A mold frame and a case.

In order to improve the yield of the liquid crystal display panel, thin film transistor array panels are formed on a large-sized mother glass panel, color filter panels are formed on a separate mother glass panel, and thin film transistor array panels and color filter panels And then cutting them from the coalesced cemented panels into the respective unit liquid crystal display panels.

Generally, cutting of a unit liquid crystal display panel is performed through a process of forming a scribe line on both surfaces of a cemented panel with a wheel having a hardness higher than that of glass, and propagating a crack along the scribing line .

1 is a schematic view showing a sectional structure of a liquid crystal display panel in which a thin film transistor array panel 1 is bonded to a color filter panel 2.

The step portion 3 is formed by cutting and removing the color filter panel 2 of the corresponding portion in order to expose the terminal portion 6 in the thin film transistor array panel 1 as shown in Fig.

Hereinafter, the color filter panel 2 having a slightly smaller width is referred to as a first panel, and the thin film transistor array panel 1 having a relatively large width relative to the color filter panel 2 is referred to as a second panel. In the drawing, the hatched portion is a portion to be removed as the dummy portion 7.

On the other hand, in the case of a scribing operation for the purpose of producing a small panel of about 4 to 5 inches in general, as shown in Fig. 1, a stick shape with a step portion 3 is firstly scribed Thereby forming a cemented panel of

FIG. 2 shows a stick-shaped cusp panel 10 in which terminal portions are exposed on one side through such a scribing operation.

Then, the stick-shaped cemented panel 10 is cut perpendicularly to the longitudinal direction thereof to produce a predetermined unit panel.

A conventional scribing method for producing the unit panel 11 (see Fig. 2) from the stick-shaped cemented panel 10 is shown in Fig.

As shown in FIG. 3, a stick-shaped cemented panel 10 is placed on a table T, and the color filter panel 2, which is a first panel, is horizontally scribed. Then, The thin film transistor array panel 1 is scribed by turning the cemented panel 10 upside down.

Conventionally, however, when the thin film transistor array panel 1 is scribed while the color filter panel 2 is placed on the table T, the color filter panel 2 and the thin film transistor array panel 1 When the scribing wheel 5 performs scribing on the thin film transistor array panel 1 on which the terminal portion 6 is exposed, the upper edge of the color filter panel 2 (that is, Bending occurs downward with respect to the corner portion (C)).

Particularly in recent years, the thickness of the glass panel has been gradually thinned, and the phenomenon that the glass panel is broken by a slight bending deformation frequently occurs.

In order to solve such a problem, it may be considered to place the support plate in the space 4 in which the step portion exists. However, in this case, various disadvantages such as generation of static electricity, foreign matter interposition,

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to prevent bending due to a pressing force of a scraping wheel during scribing of a small panel and to prevent breakage thereof, And a scribing method of a brittle cemented panel having a step that can greatly increase the productivity.

In order to achieve the above object, a scribing method of a brittle cemented panel having a step according to the present invention is a scribing method for a first panel and a second panel in which a stepped portion is formed and attached,

Scraping from one side of the second panel to a point where the step is started;

Scribing the entire width from one side of the first panel with the cemented panel turned upside down; And

And lowering the scribing wheel to scribe the stepped area of the second panel.

A scribing method for a brittle cemented panel having a step according to the present invention is a scribing method for a first panel and a second panel in which a stepped portion is formed and attached,

Scribing the entire width from one side of the first panel;

Descending the scribing wheel to scribe the stepped area of the second panel; And

And scraping from one side of the second panel to a point where the stepped portion starts when the adhered panel is turned upside down.

And the scribing in the stepped region of the second panel starts from the corner of the stepped portion and is directed to the other end of the second panel.

Instead, the scribing of the stepped region of the second panel may proceed from the other end of the second panel toward the corner of the stepped portion.

Further, a scribing line is not formed from the corner of the step portion to the radius of the scribing wheel in the second panel.

Further, the primary crack formed on the second panel constituting the step portion and the primary crack formed on the bottom surface of the second panel meet each other at the time of secondary crack progress.

The method may further include the step of determining a start position of the step portion using the distance data previously input before the step of descending the scribing wheel.

The method may further include the step of detecting a stepped portion from the camera or the sensor and determining a starting position of the stepped portion before descending the scribing wheel.

According to the present invention having the above-described constitution, the method of performing scribing on the glass panel is different, thereby preventing bending due to the pressing force of the scribing wheel during scribing to produce a small panel, This has the advantage of preventing material waste and achieving high yields.

1 is a cross-sectional view schematically showing a cross-sectional structure of a liquid crystal display panel in which a thin film transistor array panel and a color filter panel are bonded together.
2 is a plan view showing a stick-shaped cement panel made by scribing;
3 is a view showing a scribing method of a brittle cemented panel having a step portion according to the prior art.
4 is a view showing a scribing method of a brittle cemented panel having a step portion according to the present invention.
Fig. 5 is a view showing a primary crack generated by the scribing method in Fig. 4 and a secondary crack occurring in the braking step; Fig.
6 is a schematic view showing a system for implementing a scribing method of a brittle cemented panel having a step according to the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS.

As shown in the figure, the brittle cemented panel A having a step according to the present invention is configured such that the first panel 100 and the second panel 200 are joined together, And the second panel 200 has a large width so that the step 300 is formed on one side.

In order to scribe the glass panel formed with the step 300 with the scribing wheel 400, the screen is first scribed from the one side of the second panel 200 to the point where the step 300 starts.

According to the scribing process at this stage, since the scribing wheel 400 does not pass the stepped portion 300, the second panel 200 at the stepped portion is not bent.

Next, the entire width of the first panel 100 is scribed from one side of the first panel 100 with the cemented panel A turned upside down.

Then, the scribing wheel 400 is lowered to scribe the stepped portion 300 of the second panel 200 to complete the entire scribing process.

In this case, it is preferable to determine the position of the step 300 before descending the scribing wheel. This is because the radius of the scribing wheel 400 may cause the scribing wheel 400 to interfere with the first panel 100 during descent. That is, to prevent the interference of the scribing wheel 400, it is necessary to descend at least the radius of the scribing wheel 400 from the point where the step 300 starts.

The position of the step 300 can be determined by using the inputted distance data or by sensing it through a camera or a sensor.

Fig. 4 shows a configuration in which the camera 500 is arranged to determine the position of the step 300 as an example.

In this case, the vision camera 500 can be used to calculate the coordinates of the point where the step 300 starts, thereby accurately determining the distance the scribing wheel 400 should travel.

4, since the scribing wheel 400 has a predetermined radius, the scribing wheel 400 moves from the point where the step 300 starts, that is, from the corner C, 400 in the radial direction.

Therefore, no scribing line is formed in the second panel 200 from the corner C of the step 300 to the radius of the scribing wheel 400.

However, it is not always necessary to move only the radius of the scribing wheel 400 from the corner portion C, and further movement is possible within a range in which a secondary crack described later can be naturally formed.

When a sensor (not shown) is used to determine the position of the stepped portion 300, it is preferable that the scribing wheel 400 senses the corner portion C of the stepped portion 300 at an instant.

This is because the center of the scribing wheel 400 has to make additional movement beyond the corner C so that a margin for the control can be obtained by sensing the starting position of the step 300 before the additional movement .

As described above, in the case of the second panel 200, the scribing line (primary crack) is not continuously formed on one surface, but the one surface has the width of the first panel 100 and the other surface has the step 300 ), A continuous scribing line is not formed, and discontinuity occurs in position and length.

However, as shown in FIG. 5, primary cracks (dotted lines) formed diagonally on one surface and the other surface of the second panel 200 in the subsequent braking process are propagated toward each other and naturally connected to each other, (One-dot chain line).

Therefore, there is no case in which a cut surface is damaged in a subsequent braking process and defects are generated.

Fig. 6 shows a system embodying a scribing method for a brittle cemented panel with a step according to the present invention.

As shown in the drawing, when the laminating panel A is placed on the table T, the camera 500 or the sensor (not shown) detects the reference point of the laminating panel A and transmits a signal to the controller 800 do.

The control unit 800 calculates the position of the reference point and calculates the position of the reference point by using a moving means 700 such as a motor and a feed screw which are vertical moving means of the scribing head 900 or a voice coil motor or a hydraulic cylinder and a linear motor, To perform scribing.

Next, the position of the stepped portion 300 is determined to determine the descent position of the scribing wheel 400, and the scribing wheel 400 is lowered by the thickness of the first panel 100.

The surface of the stepped portion on the second panel 200 is scribed to complete the scribing of the portion where the stepped portion 300 is present.

The opposite side of the stepped portion 300 may be placed on the table T by reversing the cementing panel A and scribing may be performed in the same manner as described above.

When the scribing is completed, predetermined unit panels are continuously produced through the braking operation.

In the above example, the second panel 200 is scribed preferentially, but the step 300 of the first panel 100 and the second panel 200 is preferentially scribed, The surface opposite to the step portion of the panel 200 may be scribed subsequently.

The scribing of the stepped portion 300 of the second panel 200 may be directed to the other end of the second panel 200 starting from the corner C of the stepped portion 300, 2 panel 200 from the other end toward the corner C of the stepped portion 300.

Considering the physical properties of the adhesion panel (A), that is, the brittleness, the hardness or the toughness, it is preferable that the scribing line be most appropriately formed and the secondary crack smoothly connected.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

A ... cement panel
C ... corner portion
100 ... first panel
200 ... second panel
300 ... stepped portion
400 ... scriing wheel

Claims (8)

A scribing method for a first panel and a second panel in which stepped portions are formed and joined together,
Scrolling from one side of the second panel to a point where the step is started;
Scribing the entire width from one side of the first panel with the cemented panel turned upside down; And
And lowering the scribing wheel while scrolling the stepped area of the second panel in a state that the scribing wheel is further moved by a radius of the scribing wheel from a point where the step is started. Wherein the scribing method comprises:
A scribing method for a first panel and a second panel in which stepped portions are formed and joined together,
Scribing the entire width from one side of the first panel;
Lowering the scribing wheel while scrolling the stepped region of the second panel in a state of being further moved by a radius of the scribing wheel from a point where the step is started; And
And scribing the surface of the second panel from a side of the second panel to a point where the step portion starts when the cemented panel is turned upside down.
3. The method according to claim 1 or 2,
Wherein the scribing of the stepped region of the second panel is started from the corner of the stepped portion to the other end of the second panel.
3. The method according to claim 1 or 2,
And the scribing in the stepped region of the second panel proceeds from the other end of the second panel toward the corner of the stepped portion.
3. The method according to claim 1 or 2,
Wherein a scribing line is not formed from a corner of the stepped portion to a radius of the scribing wheel in the second panel.
6. The method of claim 5,
Wherein a primary crack formed on a second panel constituting the step portion and a primary crack formed on a bottom surface of the second panel meet with each other at the time of secondary crack progression.
3. The method according to claim 1 or 2,
Further comprising the step of determining a start position of the step portion by using the distance data previously input before the step of descending the scribing wheel.
3. The method according to claim 1 or 2,
Further comprising the step of detecting a stepped portion from a camera or a sensor to determine a starting position of the stepped portion before lowering the scribing wheel.

KR1020100089525A 2010-09-13 2010-09-13 Scribing method of assembled brittle substrates having steps KR101696719B1 (en)

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KR101696719B1 true KR101696719B1 (en) 2017-01-16

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KR102457343B1 (en) * 2020-12-14 2022-10-21 한국미쯔보시다이아몬드공업(주) Scribing method for bonded brittle substrate with terminal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006154254A (en) * 2004-11-29 2006-06-15 Optrex Corp Method for manufacturing liquid crystal display panel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006154254A (en) * 2004-11-29 2006-06-15 Optrex Corp Method for manufacturing liquid crystal display panel

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