CN101417858A - Glass severing device and method - Google Patents
Glass severing device and method Download PDFInfo
- Publication number
- CN101417858A CN101417858A CNA2008101737876A CN200810173787A CN101417858A CN 101417858 A CN101417858 A CN 101417858A CN A2008101737876 A CNA2008101737876 A CN A2008101737876A CN 200810173787 A CN200810173787 A CN 200810173787A CN 101417858 A CN101417858 A CN 101417858A
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- CN
- China
- Prior art keywords
- laser
- glass
- sheet glass
- fissured
- irradiation portion
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C03B33/037—Controlling or regulating
-
- 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
- C03B33/03—Glass cutting tables; Apparatus for transporting or handling sheet glass during the cutting or breaking operations
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/10—Glass-cutting tools, e.g. scoring tools
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
This invention refers to a glass cutting device and method. The glass cutting device includes a holding plate having a holding glass plate, a holding plate drive unit which make the holding plate move in a single axle direction, a laser oscillation part which makes the laser on the glass plate oscillate, a sensor which sense a slit of the glass plate formed by the laser. The holding plate drive unit determines the moving speed of the holding plate in the single axel direction based on the elongation degree of the slit sensed by the sensor. Therefore, the excellent cutting can be performed by controlling the slit formed on the glass plate.
Description
Technical field
The present invention relates to glass severing device and method, particularly be controlled at the fissured elongation that forms on the sheet glass, glass severing device and the method that can stably cut off sheet glass.
Background technology
When the manufacturing of the panel display board of display panels and plasma display etc., on a glass substrate, form display element and circuit, cut apart along predetermined cut-off rule, thus, take out a plurality of panels by a glass substrate.As this panel, be to form with the bonding a pair of glass substrate that is formed with metal such as electrode such as caking agent, outside adherent glass like this, laser disconnecting device also is used for the cut-out of other hard brittle materials.
Fig. 5 represents the existing CO that used
2The cutting-off method of the glass of laser.Cut-out at glass substrate 50 begins end 51, uses wheel cutter to form indentation.And, on one side with the CO that does not see through glass
2The surface of glass substrate 50 such as irradiation such as laser 60 infrared lasers such as grade is Yi Bian make CO
2Laser relatively scans with respect to glass substrate 50, utilize cooling material such as pure water 65 sharply these laser irradiating parts of cooling the rear near.Thus, make the surface of glass substrate 50 produce thermal stresses, form line 55, thereafter, on glass substrate 50, apply breakaway and make glass substrate 50 bendings, glass substrate 50 is cut off along line 55.
In No. 3027768 communique of special permission, a kind of cutting-off method of brittle non-metallic material is disclosed, utilize the irradiation of radiotherapy beam, under than the low temperature of the softening temperature of brittle non-metallic material, make the surperficial overheated of described brittle non-metal, cold medium is supplied with in the zone of leaving predetermined distance that is positioned at after more leaning on than superheated target area, according to the size of light beam spot and described predetermined distance etc., the relative moving speed of regulation radiotherapy beam and brittle non-metallic material main body.
But, in each sheet glass, there are the degree difference of internal stress or the deviation of physical properties etc., to cut off with same condition under the situation of sheet glass, the quality of finishing is also different.Therefore,, need the fissured elongation of control laser radiation, form good crack in order to realize the stable cut-out of sheet glass.As mentioned above, control at cooling materials such as making water under the situation of fissured elongation, in the processing cost man-hour of water, in addition, under the situation that overlapping two sheet glass cut off, existence can not be cooled off the problem of the sheet glass that is configured in downside.
Summary of the invention
The purpose of this invention is to provide glass severing device and method, can directly be determined at the fissured elongation that forms on the sheet glass, this measurement result is reflected in the speed of relative movement of laser and sheet glass, carries out the fissured control of on collotype, extending, form good crack.
Glass severing device of the present invention is characterised in that to have: the laser oscillating part that laser is vibrated; Laser scanning section along the predetermined cut-out line of the sheet glass that cuts off object, scans the irradiation portion from the laser of described laser oscillating part; Transmitter detects the fissured front position that produces owing to the irradiation of described laser on described sheet glass; Control part is controlled making the translational speed of described sheet glass when described irradiation portion moves, make by described sensor detecting to the crack front position follow appropriate location by the described crack front of the irradiation portion decision of described laser.
In addition, the invention is characterized in that described control part is in described fissured top portion, irrespectively make the relative moving speed of described sheet glass and described irradiation portion rise to preset value with described fissured elongation.
In addition, the invention is characterized in that described control part is at the allowable upper limit value of the relative moving speed of described sheet glass and described irradiation portion and allow to control between the lower value, make described fissured front position be no more than described irradiation portion.
In the severing of glass method of the present invention, to the sheet glass irradiating laser that cuts off object, irradiation portion along predetermined cut-out line sweep laser, thereby cut off described sheet glass, it is characterized in that, has following operation: utilize transmitter, detect the fissured front position that on described sheet glass, produces owing to the irradiation of described laser; To the translational speed of described sheet glass when described irradiation portion moves controlled, make by described sensor detecting to the crack front position follow appropriate location by the described crack front of the irradiation portion decision of described laser.
In addition, the invention is characterized in,, irrespectively make the relative moving speed of described sheet glass and described irradiation portion rise to preset value with described fissured elongation in described fissured top portion.
In addition, the invention is characterized in, at the allowable upper limit value of the relative moving speed of described sheet glass and described irradiation portion with allow to control between the lower value, make described fissured front position be no more than described irradiation portion.
According to the present invention, can not use the crack of cooling material control elongation, so, play and spend such effect in man-hour in the processing that not be used in cooling material.
In addition, because can directly measure fissured elongation and be reflected in the translational speed of laser, so, can carry out more stable formation, in addition, play the effect of the cut-off velocity that can improve sheet glass.
Description of drawings
Fig. 1 is the glass severing device of expression form of implementation of the present invention and the synoptic diagram of method.
Fig. 2 is the structure iron of severing of glass machine of the present invention.
Fig. 3 is the schema of explanation fissured control method of the present invention.
Fig. 4 is the chart of the summary of expression fissured control method of the present invention.
Fig. 5 is the existing use CO of expression
2The stereographic map of the cutting-off method of the glass of laser.
Embodiment
Below, with reference to accompanying drawing, to describing for the optimal way of implementing glass severing device of the present invention and method.
Fig. 1 is the glass severing device of expression form of implementation of the present invention and the synoptic diagram of method.This glass severing device 70 has the plate of putting 20, puts plate electric motor 25, ball-screw 26, laser injection part 30 and transmitter 40.
Put plate 20 for what put sheet glass 10, below have two not shown nuts, for each nut, similarly be connected to the ball-screw 26 that is configured in the below.Be connected with at an end of ball-screw 26 and put plate electric motor 25, this puts plate electric motor 25 can make ball-screw 26 in direction rotation arbitrarily.This puts plate electric motor 25 and rotates arbitrarily, thus, puts plate 20 and can go up mobile in the direction of single shaft arbitrarily (left and right directions) of arrow in figure.In addition, the moving method that puts plate 20 is not limited to aforesaid method, can select from technique known.
For laser injection part 30, put plate 20 above, be installed in and sheet glass 10 opposed positions.Laser injection part 30 penetrates laser 31 with the constant focal length on one side, from incipient crack in the end of sheet glass 10 formation form position 11 along desirable cut-out line sweep laser irradiating position on one side.For scan laser irradiation position 32, make to put plate electric motor 25 rotation, make and put ball-screw 26 that plate 20 is connected and rotate and realize.In this form of implementation, the situation that plate 20 direction of arrow (right) in the drawings upward moves that puts that makes is shown.
When from laser injection part 30 when sheet glass 10 penetrates laser 31, the scope of the broad that clips desirable cut-out line is heated, in sheet glass 10, produce thermal stresses.That is, sheet glass 10 is accepted the irradiation of laser 31, and it is absorbed, this irradiated site heating.Thus, between the lower position of the temperature around this irradiated site and its, because the difference of thermal expansion produces thermal stresses.Therefore, be that the center forms thermal stresses on its zygomorphy ground to cut off line, produce tensile stress.When this tensile stress surpassed the intensity of sheet glass 10, producing with the incipient crack was the crack 12 of starting point.And, the desirable cut-out line of laser scanning position 32 scannings, thus, crack 12 elongations.
To keep in position with respect to laser scanning position 32 in the front position (below, be designated as crack front position 13) in the crack 12 of elongation on the sheet glass 10, and thus, can on the desirable cut-out line of sheet glass 10, form uniform crack 12.Therefore, control fissured elongation, make the crack front position 13 that on sheet glass 10, forms follow crack front appropriate location 15.In order to control the elongation in crack 12, glass severing device 70 of the present invention has the transmitter 40 that detects crack front position 13, puts plate electric motor 25 and control their control part 100 according to what the information that obtains from transmitter 40 made that the translational speed that puts plate 20 changes.
For transmitter 40, put plate 20 above, be configured in and sheet glass 10 opposed positions.In order to detect crack front position 13, position clear and definite and laser irradiation device 32 concerns that preferred sensor 40 is fixedly mounted on the laser injection part 30.40 pairs of sheet glass 12 of transmitter are photographed, and the image of being photographed is carried out picture processing, thereby can grasp crack front position 13.In addition, transmitter 40 can be selected from technique known.For example, use the shift sensor of emission laser, the diffuse-reflectance that perception produces owing to fissured generation thus, also can be grasped crack front position 13.
So-called crack front appropriate location 15, be illustrated in glass severing device 70 in service certain constantly, with respect to laser irradiating position 32 optimal crack front positions 13.According to the characteristic of the size of the sheet glass 10 that cuts off or the laser 31 that is shone etc., this crack front appropriate location 15 of decision on experience.In Fig. 1, expression crack front position 13 is arranged in the situation of "+" side (figure right side, the situation that the elongation in crack 12 lags behind) of crack front appropriate location 15.Like this, under the situation of 13 no show crack front appropriate locations 15, crack front position,, be positioned at "+" side with respect to crack front appropriate location 15.On the contrary, surmount crack front appropriate location 15 in crack front position 13 and under the situation about forming (being positioned at the situation in left side among the figure), crack front position 13 is positioned at "-" side with respect to crack front appropriate location 15.
Leave in crack front position 13 under the situation of crack front appropriate location 15, in good fissured formation, produce unsuitable situation.For example, leave under the bigger situation in "+" side in crack front position 13, even irradiating laser 31, does not extend in its above crack 12 yet.On the contrary, leave under the bigger situation in "-" side in crack front position 13, crack front position 13 surmounts laser irradiating position 32, and the danger that makes crack 12 elongations on the direction outside anticipation is arranged.For unsuitable situation does not take place in the elongation in crack 12, form good crack 12, control part 100 carries out the control of each device.
Fig. 2 represents the structure iron of severing of glass machine of the present invention.Control part 100 sends instruction to motor driver 26, drive putting plate electric motor 25, and, send instruction to laser oscillator 35, from laser injection part 30 to sheet glass 10 irradiating lasers.Detect by transmitter 40 by the formed fissured front position of the irradiation of laser, the information that obtains is sent to control part 100.Control part 100 sends instruction according to this information to motor driver 26, drives putting plate electric motor 25, makes fissured front position follow the appropriate location.
Fig. 3 is the schema of explanation at the method for controlling crack of severing of glass machine illustrated in fig. 1.Use the control method in this flowchart text crack 12 below.And, only otherwise specify, carry out the control in crack 12 by control part 100.
When beginning to cut off sheet glass 10, irrespectively make with crack front position 13 to put plate 20 and quicken (S111).And, the translational speed that puts plate 20 is brought up to (S112) more than the lower limit speed that sets.Like this, for the translational speed that puts plate 20, except lower limit speed, go back capping speed, restriction puts the scope of the translational speed of plate 20, thus, can prevent to put excessively moving of plate 20, carries out stable cut-out operation.For the scope of this translational speed, the characteristic of the laser 31 that consider the physical properties of the sheet glass 10 cut off or size, is scanned waits to be set.
Prescribe a time limit when the translational speed that puts plate 20 surpasses down, transmitter 40 is started, and checks whether crack front position 13 is positioned at appropriate location 15 (S113).At this moment, under the situation that is judged as "-" side that is positioned at appropriate location 15 (S114),, put the accelerate process (S116) of plate 20 when the translational speed that puts plate 20 is upper limit when following (S115).In addition, be positioned under the situation of "+" side of appropriate location 15 (S114) being judged as crack front position 13, when the translational speed that puts plate 20 is lower limit when above (S117), (S118) handled in the deceleration that puts plate 20.Like this, 13 surpass under the situation of appropriate location (being positioned at the situation of "-" side) in the crack front position, put the accelerate process of plate 20, under the situation of no show appropriate location, (be positioned at the situation of "+" side), the deceleration that puts plate 20 is handled, thus, seek crack front position 13 following to appropriate location 15.
Here, in S113, being positioned in crack front position 13 under the situation of appropriate location, in S115, S116, is under the situation of critical velocity in the translational speed that puts plate 20 perhaps, puts the translational speed that plate 20 is maintained the statusquo.
Below, use Fig. 4 that the control in the crack 12 of being undertaken by control part 100 is described.
Fig. 4 is the chart of summary that is illustrated in the method for controlling crack of severing of glass machine illustrated in fig. 1.The graphical presentation of upside puts plate translational speed and time relation among the figure.In addition, the graphical presentation crack front position of downside and with the time relation of the synchronize chart of upside.Each Roman number of putting down in writing in the chart represent severing of glass machine 70 operating, with arrow represent during.Below, about during each, according to transmitter 40 detected crack front positions 13, what illustrate that control part 100 instructs puts the plate translational speed.And, in this form of implementation, penetrate the laser 31 of fixed amounts simultaneously from laser injection part 30 with the operation of severing of glass machine 70, do not carry out the control of laser output.
When the cut-out of the sheet glass 10 that expression is undertaken by severing of glass machine 70 during the I begins.When the cut-out of sheet glass 10 begins, irrespectively will put plate 20 with crack front position 13 and accelerate to the lower limit speed that sets (figure vindication circle portion) (be designated as in the chart force to drive during).Thus, can prevent deadlock (dead lock) state of program stored in control part 100.
When putting the plate translational speed when accelerating to lower limit speed, control part 100 start sensors 40.After, transmitter 40 continues to measure crack front position 13, finishes up to cutting off.The crack front position of being measured during transmitter 40 startings 13 (figure vindication circle portion) is positioned at "-" side (with reference to Fig. 1) of appropriate location 15, so, keep the acceleration mode that puts the plate translational speed.
Soon, when confirming that by transmitter 40 appropriate location is come in crack front position 13, keep the translational speed (during the II) of this moment that puts plate 20.
When the crack front position 13 that remains on appropriate location 15 by the transmitter affirmation during II is positioned at "+" side of appropriate location 15, will put plate 20 decelerations (during the III).For this amount of deceleration that puts the plate translational speed, the characteristic of laser of consider the material of cut sheet glass or size, being shone etc. decide with experience, experiment.Like this,, under the situation of the elongation no show appropriate location 15 in crack 12, put the deceleration of plate 20, thus, seek the recovery of crack front position 13 to appropriate location 15 for control part 100.
The deceleration-operation that puts plate 20 that utilization is carried out during III confirms that by transmitter 40 crack front positions 13 clip appropriate location 15 when "+" moves by side to "-" side, and control part 100 makes and puts plate 20 and quicken (during the IV).Like this, control part 100 surpasses under the situation of appropriate location 15 in the elongation in crack 12, puts the acceleration of plate 20, thus, seeks the recovery of crack front position 13 to appropriate location 15.
Utilization is carried out during IV puts the acceleration operation of plate 20, confirms that by transmitter 40 crack front positions 13 clip appropriate location 15 when "-" moves by side to "+" side, and control part 100 makes and puts plate 20 slow down (during the V).At this moment, reach predefined lower limit speed, do not reset in crack front position 13 under the situation of appropriate location 15, also keep lower limit speed even put the translational speed of plate 20.
The red-tape operati that puts plate 20 that utilization is carried out during V confirms that by transmitter 40 crack front positions 13 clip appropriate location 15 when "+" moves by side to "-" side, and control part 100 makes and puts plate 20 and quicken (during the IV).At this moment, reach predefined upper limit speed, do not reset in crack front position 13 under the situation of appropriate location 15, also keep upper limit speed even put the translational speed of plate 20.
Like this, when severing of glass machine that uses this form of implementation and method, can the translational speed of sheet glass be changed according to the fissured elongation that on sheet glass, forms.Thus, can form good fissured optimal location because the fissured front position of elongation can be maintained, so, can carry out the cut-out of stable sheet glass.
In addition, utilize the fissured front end of sensor detecting elongation and carry out the so simple structure of drive electric motor to putting plate because be according to the information Control that obtains from this transmitter, so, can form the crack quickly, can seek to improve cut-off velocity.
Claims (6)
1. glass severing device is characterized in that having:
The laser oscillating part that laser is vibrated;
Laser scanning section along the predetermined cut-out line of the sheet glass that cuts off object, scans the irradiation portion from the laser of described laser oscillating part;
Transmitter detects the fissured front position that produces owing to the irradiation of described laser on described sheet glass;
Control part is controlled making the translational speed of described sheet glass when described irradiation portion moves, make by described sensor detecting to the crack front position follow appropriate location by the described crack front of the irradiation portion decision of described laser.
2. according to the glass severing device of claim 1, it is characterized in that,
Described control part is in described fissured top portion, irrespectively makes the relative moving speed of described sheet glass and described irradiation portion rise to preset value with described fissured elongation.
3. according to the glass severing device of claim 1 or 2, it is characterized in that,
Described control part is at the allowable upper limit value of the relative moving speed of described sheet glass and described irradiation portion and allow to control between the lower value, makes described fissured front position be no more than described irradiation portion.
4. a severing of glass method to the sheet glass irradiating laser that cuts off object, along the irradiation portion of predetermined cut-out line sweep laser, thereby is cut off described sheet glass, it is characterized in that having following operation:
The fissured front position of utilizing sensor detecting on described sheet glass, to produce owing to the irradiation of described laser;
To the translational speed of described sheet glass when described irradiation portion moves controlled, make by described sensor detecting to the crack front position follow appropriate location by the described crack front of the irradiation portion decision of described laser.
5. according to the severing of glass method of claim 4, it is characterized in that,
In described fissured top portion, irrespectively make the relative moving speed of described sheet glass and described irradiation portion rise to preset value with described fissured elongation.
6. according to the severing of glass method of claim 4 or 5, it is characterized in that,
At the allowable upper limit value of the relative moving speed of described sheet glass and described irradiation portion with allow to control between the lower value, make described fissured front position be no more than described irradiation portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007253789 | 2007-09-28 | ||
| JP2007253789A JP2009084096A (en) | 2007-09-28 | 2007-09-28 | Apparatus and method for cutting glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101417858A true CN101417858A (en) | 2009-04-29 |
Family
ID=40628885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101737876A Pending CN101417858A (en) | 2007-09-28 | 2008-09-28 | Glass severing device and method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2009084096A (en) |
| KR (1) | KR20090033085A (en) |
| CN (1) | CN101417858A (en) |
| TW (1) | TW200930672A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934427A (en) * | 2009-06-30 | 2011-01-05 | 三星钻石工业股份有限公司 | Method for cutting brittle material substrate |
| CN102806421A (en) * | 2012-08-22 | 2012-12-05 | 温州泛波激光有限公司 | Light spot compensation control system and laser cutting equipment thereof |
| WO2015066983A1 (en) * | 2013-11-06 | 2015-05-14 | 深圳市华星光电技术有限公司 | Cutting device for cutting liquid crystal substrate and cutter pressure adjusting method thereof |
| TWI494186B (en) * | 2009-05-27 | 2015-08-01 | Corning Inc | Laser scoring of glass at elevated temperatures |
| WO2019090638A1 (en) * | 2017-11-09 | 2019-05-16 | 张丽红 | Glass cutting apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013039230A1 (en) | 2011-09-15 | 2013-03-21 | 日本電気硝子株式会社 | Method for cutting glass sheet |
| KR20140062427A (en) * | 2011-09-15 | 2014-05-23 | 니폰 덴키 가라스 가부시키가이샤 | Method for cutting glass sheet |
-
2007
- 2007-09-28 JP JP2007253789A patent/JP2009084096A/en active Pending
-
2008
- 2008-09-12 TW TW097135003A patent/TW200930672A/en unknown
- 2008-09-26 KR KR1020080094519A patent/KR20090033085A/en not_active Application Discontinuation
- 2008-09-28 CN CNA2008101737876A patent/CN101417858A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI494186B (en) * | 2009-05-27 | 2015-08-01 | Corning Inc | Laser scoring of glass at elevated temperatures |
| CN101934427A (en) * | 2009-06-30 | 2011-01-05 | 三星钻石工业股份有限公司 | Method for cutting brittle material substrate |
| CN101934427B (en) * | 2009-06-30 | 2013-12-25 | 三星钻石工业股份有限公司 | Method for cutting brittle material substrate |
| CN102806421A (en) * | 2012-08-22 | 2012-12-05 | 温州泛波激光有限公司 | Light spot compensation control system and laser cutting equipment thereof |
| CN102806421B (en) * | 2012-08-22 | 2014-12-03 | 温州泛波激光有限公司 | Light spot compensation control system and laser cutting equipment thereof |
| WO2015066983A1 (en) * | 2013-11-06 | 2015-05-14 | 深圳市华星光电技术有限公司 | Cutting device for cutting liquid crystal substrate and cutter pressure adjusting method thereof |
| WO2019090638A1 (en) * | 2017-11-09 | 2019-05-16 | 张丽红 | Glass cutting apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200930672A (en) | 2009-07-16 |
| JP2009084096A (en) | 2009-04-23 |
| KR20090033085A (en) | 2009-04-01 |
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Open date: 20090429 |