KR20130041483A - Plat display panel cutting apparatus and cutting method thereof - Google Patents

Plat display panel cutting apparatus and cutting method thereof Download PDF

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Publication number
KR20130041483A
KR20130041483A KR1020110105748A KR20110105748A KR20130041483A KR 20130041483 A KR20130041483 A KR 20130041483A KR 1020110105748 A KR1020110105748 A KR 1020110105748A KR 20110105748 A KR20110105748 A KR 20110105748A KR 20130041483 A KR20130041483 A KR 20130041483A
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South Korea
Prior art keywords
flat panel
display panel
panel display
growth
crack
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KR1020110105748A
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Korean (ko)
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KR101850151B1 (en
Inventor
박태원
오성훈
어지흠
엄현식
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엘지디스플레이 주식회사
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133351—Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
    • 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

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)

Abstract

An embodiment of the present invention, a conveyor for transferring the loaded flat panel display panel to the first growth region and the second growth region; A first growth in which a first crack including at least two first cracks positioned in the first growth region and spaced apart from each other in the x-axis direction and spaced apart from each other in the y-axis direction is grown on the flat panel display panel; Way; And second growth means positioned in the second growth region and growing by the first crack and the second crack formed in the flat panel display panel to grow into secondary cracks.

Description

Flat display panel cutting apparatus and cutting method

An embodiment of the present invention relates to a cutting device and a cutting method of a flat panel display panel.

In line with the recent full-scale informatization era, the display field for displaying large-capacity data by various electrical signals in a visual image has also been rapidly developed. Display device (FPD) as a liquid crystal display device (LCD), plasma display device (PDP), field emission display device (FED), light emitting display device (Light Emitting) Display device (LED) is introduced to quickly replace the existing cathode ray tube (CRT).

In general, the manufacturing process of the flat panel display panel as described above is a substrate manufacturing process for obtaining the first and second substrates, and a cell for completing the flat panel display panel by bonding both substrates with a unique fluorescent or polarizing material layer therebetween. Process).

In addition, these substrate manufacturing processes and cell processes are generally performed on the first and second large area substrates in which a plurality of cell regions are divided by positions in order to reduce the process or improve the yield. Accordingly, in the substrate fabrication process, thin film deposition, photo-lithography, and etching are repeatedly performed on the first and second large-area substrates several times, and the pixel and thin film transistors for each cell region, etc. are repeated. In the cell process, a seal pattern for bonding to each cell region of the first or second large area substrate is formed, and then the two substrates are sandwiched with a unique layer of fluorescent or planar material interposed therebetween. After face-to-face bonding, each cell region is cut to obtain a plurality of flat panel display panels.

In a conventional cell process for cutting cell areas, a cutting device may be used, and the cutting device typically scribs a plurality of cracks in the x-axis and y-axis directions along a cutting line of an object surface. A cutting step and a high temperature steam injection step of performing a crack growth to grow a plurality of cracks formed in the x-axis and y-axis directions throughout the cutting line.

However, the conventional cutting device using the high temperature steam method, when cutting the substrate bonded with a sealant, etc., only affects the substrate located on the upper surface of the high temperature steam, so the effect is insignificant during the cutting process and improvement thereof is required.

Embodiment of the present invention for solving the problems of the above-described background, flat panel display panel that can improve the problem of lowering the division force caused by crack growth, and can reduce the installation cost and operating cost by replacing the conventional high temperature steam with a roller It is to provide a cutting device and a cutting method of.

Embodiments of the present invention as a means for solving the above problems, a conveyor for transferring the loaded flat panel display panel to the first growth region and the second growth region; A first growth in which a first crack including at least two first cracks positioned in the first growth region and spaced apart from each other in the x-axis direction and spaced apart from each other in the y-axis direction is grown on the flat panel display panel; Way; And second growth means positioned in the second growth region and growing by the first crack and the second crack formed in the flat panel display panel to grow into secondary cracks.

The second growth means may include a roller whose pressure in contact with the flat panel display panel is adjusted.

The second growth means may include a roller that rotates while applying pressure to the periphery of the first crack and the second crack.

The second growth means may move while rotating the roller in the y-axis direction and the x-axis direction.

The second growth means may be arranged in a number N (N is an integer of 1 or more) corresponding to the dummy region which is the periphery of the first crack and the second crack.

And a carrying area positioned behind the second growth area, and the carrying area may include a clamp means for absorbing and carrying out a plurality of divided flat panel display panels.

The conveyor may be arranged such that the flat panel display panel passes through the first growth region, the second growth region, and the carrying out region.

The first growth means may include a scribing wheel that rotates in close contact with the flat panel display panel or a laser irradiation unit for irradiating a laser onto the flat panel display panel.

In another aspect, an embodiment of the present invention, loading the flat panel display panel; A primary crack comprising two or more first cracks spaced apart from each other in the x-axis direction and two or more second cracks spaced apart in the y-axis direction to move the loaded flat panel to the first growth region. Growing; Moving the flat panel display panel to the second growth region, applying pressure to the first crack and the second crack formed on the flat panel display panel, and growing the second display panel into secondary cracks; And moving the flat panel display panel to a carrying area and carrying out a plurality of divided flat panel display panels.

The step of growing and dividing into secondary cracks uses a roller that rotates while applying pressure to the periphery of the first crack and the second crack, and the roller may move while rotating in the y-axis direction and the x-axis direction.

Embodiment of the present invention, the effect of providing a cutting device and a cutting method of a flat panel display panel that can improve the problem of lowering the separation force caused by crack growth, and to reduce the installation and operating costs by replacing the conventional high temperature steam with a roller There is. In addition, since the embodiment of the present invention can be completely divided using a roller, the breakage rate at the time of dividing the flat panel display panel can be reduced, and the life of the scribing wheel can be expected to be extended through the operation of the low pressure scribing wheel.

1 is a schematic plan view of a cutting device for a flat panel display panel according to an embodiment of the present invention.
2 is a schematic perspective view of FIG. 1;
3 is a plan view of the second growth means.
4 is a cross-sectional view of the second growth means shown in FIG.
5 is a view for explaining a cutting process of a flat panel display panel.
6 is a plan view of a second growth means according to another embodiment;
7 is a flowchart illustrating a cutting method of a flat panel display panel according to an exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic plan view of a cutting device for a flat panel display panel according to an embodiment of the present invention, Figure 2 is a schematic perspective view of Figure 1, Figure 3 is a plan view of the second growth means, Figure 4 is a view 3 is a cross-sectional view of the second growth means shown in FIG. 3, and FIG. 5 is a diagram for describing a cutting process of the flat panel display panel.

1 and 2, the cutting device of the flat panel display panel according to an embodiment of the present invention, the conveyor 110, the first growth means 130, the second growth means 140 and the clamp means ( 150).

The conveyor 110 is disposed such that the flat panel display panel 120 loaded on the upper end of the belt passes through the first growth area SA1, the second growth area SA2, and the carrying area PA in the x-axis direction. Conveyor 110 may be composed of a belt and a transmission means such as a motor, which transfers the flat panel display panel 120 in the x-axis direction. The conveyor 110 may be configured such that one belt corresponding to the size of the flat panel display panel 120 or a plurality of belts having a smaller size than the flat panel display panel 120 are spaced apart from each other at regular intervals and transported in the x-axis direction. Can be.

The flat panel display panel 120 includes a plurality of display panels in cell units. Herein, the display panel located in units of cells may be any one of a liquid crystal display device (LCD), a field emission display device (FED), and a light emitting display device (LED). Can be.

The first growth means 130 is disposed in the first growth area SA1. The first growth means 130 includes two or more first cracks 122 spaced apart from each other in the x-axis direction and two or more second cracks 121 spaced apart in the y-axis direction on the flat panel display panel 120. Primary cracks 122 and 121 are grown. The first growth means 130 includes a laser irradiation unit for irradiating a scribing wheel or a laser closely rotating to the surface of the flat panel display panel 120.

The first growth means 130 includes a first x growth means 135 for growing two or more first cracks 122 in the x-axis direction and a first y for growing two or more second cracks 121 in the y-axis direction. Growth means 136 is included. The first x growth means 135 is disposed to correspond to the number of long axis surfaces of the cells formed on the flat panel display panel 120, while the first y growth means 136 shortens the cells formed on the flat panel display panel 120. Only one can be placed, regardless of the number of faces.

When the first x growth means 135 and the first y growth means 136 are configured as scribing wheels, the first x growth means 135 rotates the wheel in the x-axis direction while being fixed, while the first y growth means 135 is rotated. Reference numeral 136 moves in the y-axis direction and the wheel rotates in the y-axis direction. Accordingly, when the flat panel display panel 120 moves on the conveyor 110, the first x growth means 135 grows the first crack 122 in the x-axis direction, and the first y growth means 136 y. The second crack 121 is grown in the axial direction.

The second growth means 140 is disposed in the second growth area SA2. The second growth means 140 grows and divides the second cracks 122 and 121 by applying pressure to the first cracks 122 and the second cracks 121 formed on the flat panel display panel 120. The second growth means 140 includes a roller for adjusting the pressure in contact with the flat panel display panel 120. The second growth means 140 includes a roller that rotates while applying pressure to the periphery of the first crack 122 and the second crack 121. The second growth means 140 moves by rotating the roller in the y-axis direction and the x-axis direction, and grows the secondary cracks 123 and 124 by applying pressure to the first crack 122 and the second crack 121. Segment.

In the second growth means 140, the second crack means 145 for growing the first crack 122 in the x-axis direction as the secondary crack 123 and the second crack 121 in the y-axis direction are secondary cracks. A second y growth means 146 for growing to 124 is included. The second x growth means 145 is disposed to correspond to the number of long axis surfaces of the cells formed on the flat panel display panel 120, while the second y growth means 146 is shortened to the cells formed on the flat panel display panel 120. Only one can be placed, regardless of the number of faces.

While the second x growth means 145 is fixed to the second growth means 140, the roller rotates in the x-axis direction, while the second y growth means 146 has the y-axis direction of the second growth means 140. The roller rotates in the y-axis direction. Accordingly, when the flat panel display panel 120 moves on the conveyor 110, the second x growth means 145 grows the first crack 122 in the x-axis direction as the secondary crack 123 and the second y. The growth means 146 grows the second crack 121 in the y-axis direction as the secondary crack 124.

As shown in FIG. 3, the second x growth means 145 is disposed in a number N (N is an integer of 1 or more) corresponding to the dummy area dA that is the periphery of the first crack 122. The second y growth means 146 may also be arranged in N corresponding to the dummy areas which are the periphery of the second crack 121, but in one embodiment, the second y growth means 146 is disposed as one.

The dummy area dA corresponds to an area adjacent to a seal pattern for bonding between the substrates included in the flat panel display panel. Here, "C1 to C3" refers to a flat panel display panel which is grown by the second growth means 140 into secondary cracks 124 and 123 and is separated into cell units.

The second growth means 140 may move in the x1 direction or the x2 direction to grow the primary cracks 122 and 121 into the secondary cracks 123 and 124. However, since the flat panel display panel 120 moves in the x2 direction while being loaded on the conveyor 110, the second growth means 140 is fixed without moving in the x1 direction or the x2 direction and the second y growth means. Only 146 moves in the y1 and y2 directions. The same applies to the first growth means 130 forming the primary cracks 122 and 121. That is, the first growth means 130 and the second growth means 140 may move in the x1 direction or the x2 direction as an operation for forming a crack on the flat panel display panel 120, but are basically fixed. it means.

However, when it is necessary to form more primary cracks 122, 121 and secondary cracks 123, 124 than the number of scribing wheels and rollers included in the first growth means 130 and the second growth means 140 They can grow cracks by reciprocating in the x1 or x2 direction.

As shown in FIG. 4, the second y growth means 146 may move in the Z1 direction and the Z2 direction to adjust the pressure for pressing the flat panel display panel 120. When the second y growth means 146 moves in the Z1 direction, the pressure for pressing the flat panel display panel 120 decreases. On the other hand, when the second y growth means 146 moves in the Z2 direction, the pressure for pressing the flat panel display panel 120 increases. The second y growth means 146 may be composed of a major regulator and a cylinder so as to control process conditions through maintaining and regulating a constant pressure. The same condition is true for the second growth means 145 as well.

As described above, when the primary cracks 122 and 121 are grown to secondary cracks 123 and 124 using a roller which rotates with pressure, the upper and lower plates included in the flat panel 120 may be formed. It is possible to grow cracks by transmitting a uniform force.

The clamp means 150 is disposed in the discharge area PA. The clamping means 150 is carried out when the flat panel display panel 120 is divided into cells. The clamp means 150 may be configured as a vacuum suction clamp that absorbs a plurality of divided flat panel display panels 120 and takes them out of the conveyor 110.

An example of a cutting process using the cutting device of the flat panel display panel described above is as follows.

When the primary crack is grown using the first growth means 130 composed of the scribing wheel 135H, a deep crack is formed in the flat panel display panel 120 as shown in FIG. When the secondary crack is grown using the second growth means 140 formed of the roller 145R, the crack formed deep in the flat panel display panel 120 is divided as shown in FIG. Accordingly, the flat panel display panel 120 is cut into one flat panel display panel 120a and the other flat panel display panel 120b.

On the other hand, in the above-described cutting device of the flat panel display panel, the second growth means 140 may be arranged as follows.

6 is a plan view of a second growth means according to another embodiment.

As shown in FIG. 6, the second growth means 140 is arranged to move in the y1 direction or the y2 direction to grow the primary cracks 122 and 121 into the secondary cracks 123 and 124. In this case, arrangement and operation of the second x growth means 145 and the second y growth means 146 are different from those of the embodiment. For example, the second x growth means 145 is disposed in one and the second y growth means 146 is disposed in N. When the second cracks 123 and 124 need to be formed more than the number of rollers included in the second growth means 140, the second growth means 140 reciprocates in the y1 direction or the y2 direction and grows the cracks. Let's go. Here, "C1 to C3" refers to a flat panel display panel which is grown by the second growth means 140 into secondary cracks 124 and 123 and is separated into cell units.

As can be seen from the above description, the second growth means 140 may be arranged to move in the x-axis direction to grow the primary cracks 122, 121 into the secondary cracks 123, 124, of course. It may be arranged to move in the y-axis direction.

Growth of cracks using a pressure-controlled roller as in one embodiment of the present invention can improve the problems caused by the use of conventional high temperature steam, for example, the problem of separation due to the difference in heat conduction between the upper plate and the lower plate, as well as when using high temperature steam. It is possible to reduce installation and operating costs for the required steam and cooling systems.

Hereinafter, a method of cutting a flat panel display panel according to an exemplary embodiment of the present invention will be described, with reference to FIGS. 1 to 5 to help understand the description.

7 is a flowchart illustrating a cutting method of a flat panel display panel according to an exemplary embodiment of the present invention.

First, the flat panel display panel 120 is loaded (S110), and the flat panel display panel 120 is rotated according to a pattern (sealing pattern) (S120).

Next, the loaded flat panel display panel 120 is transferred to the first growth area SA1 (S130), and two or more first cracks 122 and y spaced apart from each other in the x-axis direction on the flat panel display panel 120. A primary crack including two or more second cracks 121 spaced apart from each other in the axial direction is grown (S140).

Next, the flat panel display panel 120 is transferred to the second growth area SA2 (S150), and pressure is applied to the first crack 122 and the second crack 121 formed on the flat panel display panel 120. The cracks 123 and 124 are grown and divided (S160).

Next, the flat panel display panel 120 is transferred to the export area (S170), and the flat panel display panel divided into a plurality of units is carried out in panel units (S180).

In the above process, the primary cracks 122 and 121 formed on the flat panel display panel 120 are grown into secondary cracks 123 and 124 to be divided into the first cracks 122 and the second cracks 121. Use a roller that rotates while applying pressure to the surroundings. At this time, the roller is configured to move while rotating in the y-axis direction and the x-axis direction.

Embodiment of the present invention is to improve the problem of lowering the separation force caused by crack growth using high temperature steam, and to provide a cutting device and a cutting method of a flat panel display panel that can reduce the installation cost and operating cost according to the use of high temperature steam There is. In addition, since the embodiment of the present invention can be completely divided using a roller, the breakage rate at the time of dividing the flat panel display panel can be reduced, and the life of the scribing wheel can be expected to be extended through the operation of the low pressure scribing wheel.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that the invention may be practiced. It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive. In addition, the scope of the present invention is indicated by the following claims rather than the detailed description. Also, all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

110: conveyor 130: first growth means
140: second growth means 150: clamp means
SA1: first growth area SA2: second growth area
PA: export area

Claims (10)

A conveyor for transferring the loaded flat panel display panel to the first growth region and the second growth region;
Growing first cracks in the first growth region including at least two first cracks spaced apart from each other in an x-axis direction and at least two second cracks spaced apart in a y-axis direction on the flat panel display panel; 1 means of growth; And
And a second growth means positioned in the second growth region, the second growth means for growing and dividing the first crack and the second crack formed in the flat panel display panel by applying pressure to the second crack. The method of claim 1,
The second growth means
And a roller having a pressure in contact with the flat panel display panel. The method of claim 1,
The second growth means
And a roller which rotates while applying pressure to the periphery of the first crack and the second crack. The method of claim 1,
The second growth means
And a roller rotating in the y-axis direction and the x-axis direction. The method of claim 1,
The second growth means
And N (N is an integer greater than or equal to 1) corresponding to the dummy area that is adjacent to the first crack and the second crack. The method of claim 1,
An export region located behind the second growth region,
And said carrying area includes clamping means for absorbing and carrying out said plurality of divided flat panel display panels. The method according to claim 6,
The conveyor is
And the flat panel display panel is disposed to pass through the first growth region, the second growth region and the carry-out region. The method of claim 1,
The first growth means
And a scribing wheel rotating in close contact with the flat panel display panel or a laser irradiation unit for irradiating a laser onto the flat panel display panel. Loading a flat panel display panel;
1, wherein the loaded flat panel display panel is moved to a first growth region and includes two or more first cracks spaced apart from each other in an x-axis direction and two or more second cracks spaced apart in a y-axis direction on the flat panel display panel. Growing tea cracks;
Moving the flat panel display panel to a second growth region, applying pressure to the first crack and the second crack formed on the flat panel display panel, and growing the second flat panel into secondary cracks; And
And moving the flat panel display panel to a carrying area and exporting the flat panel display panel divided into a plurality of flat panel display panels. 10. The method of claim 9,
Growing and dividing into secondary cracks
Cutting a flat panel display panel using a roller that rotates in a state where pressure is applied to the periphery of the first crack and the second crack, the roller is rotated in the y-axis direction and the x-axis direction. Way.
KR1020110105748A 2011-10-17 2011-10-17 Plat Display Panel Cutting Apparatus and Cutting Method thereof KR101850151B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109613762A (en) * 2019-01-28 2019-04-12 深圳市华星光电半导体显示技术有限公司 Mixed for liquid crystal display panel cuts glass substrate and its glue spreading method
CN114083700A (en) * 2021-11-01 2022-02-25 深圳市高美福商显科技有限公司 Liquid crystal display panel processing device and method

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Publication number Priority date Publication date Assignee Title
KR20200071907A (en) 2018-12-11 2020-06-22 삼성디스플레이 주식회사 Display apparatus and method for manufacturing display apparatus

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KR100914779B1 (en) * 2002-12-06 2009-08-31 엘지디스플레이 주식회사 Apparatus And Method Of Fabricating Liquid Crystal Display Panel
EP1666221A4 (en) 2003-09-24 2010-09-08 Mitsuboshi Diamond Ind Co Ltd Substrate dicing system, substrate manufacturing apparatus, and substrate dicing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109613762A (en) * 2019-01-28 2019-04-12 深圳市华星光电半导体显示技术有限公司 Mixed for liquid crystal display panel cuts glass substrate and its glue spreading method
CN114083700A (en) * 2021-11-01 2022-02-25 深圳市高美福商显科技有限公司 Liquid crystal display panel processing device and method

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