CN101813857A - Liquid crystal dispenser - Google Patents
Liquid crystal dispenser Download PDFInfo
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- CN101813857A CN101813857A CN200910129273A CN200910129273A CN101813857A CN 101813857 A CN101813857 A CN 101813857A CN 200910129273 A CN200910129273 A CN 200910129273A CN 200910129273 A CN200910129273 A CN 200910129273A CN 101813857 A CN101813857 A CN 101813857A
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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
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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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1341—Filling or closing of cells
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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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1341—Filling or closing of cells
- G02F1/13415—Drop filling process
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- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
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- Liquid Crystal (AREA)
Abstract
The invention provides a liquid crystal dispenser including an input unit for inputting an initial speed, a diction unit and a control unit. When the detection unit does not detect any liquid crystal droplet, the control unit executes the follow steps: 1 adding a constant value on the initial speed to get an instant speed; 2 indicating a coating head unit to coating a certain liquid crystal through a nozzle at the instant speed; 3 determining the instant speed as a proper speed and repeating the step 2 when the detection unit detects the liquid crystal droplets, replacing the instant speed by adding the constant value to the initial speed for several times to repeat the step 2, till the detection unit detects the liquid crystal droplets, when the detection unit does not detect the liquid crystal droplets, determining the instant speed as the proper speed, and when the detection unit detects the liquid crystal droplets, determining the initial speed as the proper speed by the control unit.
Description
Technical field
The present invention relates to a kind of liquid crystal coating.
Background technology
Certain amount of liquid crystal on each panel area that liquid crystal (LC) coating machine is used for being referred to as hereinafter marking on the tft array substrate of motherboard or the colorful optical filter array substrate in coating and the corresponding a plurality of LC drops of benchmark amount of liquid crystal.After certain amount of liquid crystal being discharged on each panel area, two motherboards are bonded to each other.Then, the motherboard of combination is cut into the panel of separation.
Unless drip on the panel area, will be defective panel otherwise use the panel of the separation of this panel area with the corresponding a plurality of LC drops of benchmark amount of liquid crystal.
For preventing defective panel, should be with suitable speed coating of liquid crystalline, thus liquid crystal is discharged from nozzle with the drop form, drop onto on the panel area then.When with less than the speed coating certain amount of liquid crystal of suitable speed the time, liquid crystal rests on the hole of nozzle and does not discharge from nozzle, although perhaps liquid crystal has been discharged from nozzle and can not be arrived panel area.As a result, the amount of liquid crystal on the panel area is less than the required benchmark amount of liquid crystal of each panel area.
When being coated with certain amount of liquid crystal with speed greater than suitable speed, upspring at panel area from the liquid crystal droplet that nozzle is discharged, split into broken, on the position that some broken drops onto beyond the panel area.As a result, the amount of liquid crystal on the panel area is less than the required benchmark amount of liquid crystal of each panel area.
Broken of drop may drop on given pattern application on the sealant around the panel area.This will hinder the combination well each other of colorful optical filter array substrate and tft array substrate subsequently.
Summary of the invention
Therefore, an object of the present invention is to determine suitable speed, liquid crystal droplet is discharged from nozzle under this suitable speed, and drops onto on each panel area that marks on the motherboard and can not upspring.
According to an aspect of the present invention, provide a kind of liquid crystal coating, comprising: the input block of input initial velocity, coating head unit passes through the nozzle coating of liquid crystalline with this initial velocity; Detecting unit, it detects the liquid crystal droplet of discharging from nozzle; And control module, when detecting unit did not detect liquid crystal droplet, this control module was carried out following steps: the 1-1 step obtains instantaneous velocity by add definite value on initial velocity; The 1-2 step, the indication coating head unit is coated with certain amount of liquid crystal with instantaneous velocity by nozzle; And 1-3 step, when detecting unit detects liquid crystal droplet, this instantaneous velocity is defined as suitable speed, and repetition 1-2 step, replace this instantaneous velocity by the instantaneous velocity that on initial velocity, repeatedly adds the definite value acquisition and come repetition 1-2 step, detect up to detecting unit till the moment of liquid crystal droplet, when detecting unit does not detect liquid crystal droplet, this instantaneous velocity is defined as suitable speed, and when detecting unit detects liquid crystal droplet, this control module is carried out following steps: the 2-1 step obtains instantaneous velocity by deduct definite value from initial velocity; The 2-2 step, the indication coating head unit is coated with certain amount of liquid crystal with this instantaneous velocity by nozzle; And 2-3 step, when detecting unit does not detect liquid crystal droplet, initial velocity is defined as suitable speed, and repetition 2-2 step, replace this instantaneous velocity by the instantaneous velocity that from initial velocity, repeatedly deducts the definite value acquisition and come repetition 2-2 step, till when detecting unit does not detect the quarter of liquid crystal droplet, when detecting unit detects liquid crystal droplet, the last instantaneous velocity of detected liquid crystal droplet is defined as suitable speed.
According to a further aspect in the invention, provide a kind of liquid crystal coating, comprising: the input block of input initial velocity, coating head unit is coated with certain amount of liquid crystal with this initial velocity by nozzle; Detecting unit, it detects the liquid crystal droplet of discharging from nozzle; And control module, when detecting unit did not detect liquid crystal droplet, this control module was carried out following steps: first step obtains instantaneous velocity by add definite value on initial velocity; Second step, the indication coating head unit is coated with certain amount of liquid crystal with this instantaneous velocity by nozzle; And third step, when detecting unit detects liquid crystal droplet, this instantaneous velocity is defined as suitable speed, and repeat second step, replace this instantaneous velocity by the instantaneous velocity that on initial velocity, repeatedly adds the definite value acquisition and come repetition second step, detect up to detecting unit till the moment of liquid crystal droplet, when detecting unit does not detect liquid crystal droplet, instantaneous velocity is defined as suitable speed, and control module is carried out the step that initial velocity is defined as suitable speed when detecting unit detects liquid crystal droplet.
According to a further aspect in the invention, provide a kind of liquid crystal coating, comprising: the input block of input initial velocity, coating head unit is coated with certain amount of liquid crystal with this initial velocity by nozzle; Detecting unit, it detects the liquid crystal droplet of discharging from nozzle; And control module, when detecting unit detected liquid crystal droplet, this control module was carried out following steps: first step obtains instantaneous velocity by deduct definite value from initial velocity; Second step, the indication coating head unit is coated with certain amount of liquid crystal with this instantaneous velocity by nozzle; And third step, when detecting unit does not detect liquid crystal droplet, initial velocity is defined as suitable speed, and repeat second step, replace this instantaneous velocity by the instantaneous velocity that from initial velocity, repeatedly deducts the definite value acquisition and come repetition second step, do not detect up to detecting unit till the moment of liquid crystal droplet, last instantaneous velocity with detected liquid crystal droplet when detecting unit detects liquid crystal droplet is defined as suitable speed, and wherein, initial velocity is in such velocity range: wherein coating head unit can be coated with certain amount of liquid crystal by nozzle, thereby liquid crystal droplet is dropped onto on the panel area.
According to a further aspect in the invention, provide a kind of liquid crystal coating, comprising: the input block of input initial velocity, coating head unit is coated with certain amount of liquid crystal with this initial velocity by nozzle; Electronic scales, its weighing is from the weight of the liquid crystal droplet of nozzle discharge; And control module, when electronic scales was not weighed to the weight of liquid crystal droplet, this control module was carried out following steps: first step obtains instantaneous velocity by add definite value on initial velocity; Second step, the indication coating head unit is coated with certain amount of liquid crystal with this instantaneous velocity by nozzle; And third step, repeat second step, replace this instantaneous velocity by the instantaneous velocity that on initial velocity, repeatedly adds the definite value acquisition and come repetition second step, up to no longer constant when the weight of liquid crystal droplet and till moment of beginning to reduce, any instantaneous velocity during the constant weight of the liquid crystal droplet that nozzle is discharged is defined as suitable speed, and wherein, initial velocity is in such velocity range: wherein coating head unit can not be coated with certain amount of liquid crystal by nozzle, thereby liquid crystal droplet is rested on the hole of nozzle and can not discharge from nozzle.
According to a further aspect in the invention, provide a kind of liquid crystal coating, comprising: the input block of input initial velocity, coating head unit passes through the nozzle coating of liquid crystalline with this initial velocity; Electronic scales, its weighing is from the weight of the liquid crystal droplet of nozzle discharge; And control module, when electronic scales was not weighed to the weight of liquid crystal droplet, this control module was carried out following steps: first step obtains instantaneous velocity by add definite value on initial velocity; Second step, the indication coating head unit is coated with certain amount of liquid crystal with this instantaneous velocity by nozzle; And third step, repeat second step, replace this instantaneous velocity by the instantaneous velocity that on initial velocity, repeatedly adds the definite value acquisition and come repetition second step, the mean value of these instantaneous velocitys is defined as suitable speed, the constant weight of the liquid crystal droplet of under these instantaneous velocitys, discharging from nozzle, and wherein, initial velocity is in such velocity range: wherein coating head unit can not be coated with certain amount of liquid crystal by nozzle, thereby liquid crystal droplet is rested on the hole of nozzle and can not discharge from nozzle.
Above-mentioned purpose, feature, aspect and advantage with other of the present invention will be by becoming apparent below in conjunction with the accompanying drawing detailed description of the present invention.
Description of drawings
Included to provide accompanying drawing to further understanding of the present invention to be merged in the instructions and to constitute the part of this instructions, accompanying drawing shows illustrative embodiment of the present invention, and is used for explaining principle of the present invention with this description.
In the accompanying drawing:
Fig. 1 is the stereographic map of an embodiment of the invention;
Fig. 2 is the view of the amplifier section A of Fig. 1;
Fig. 3 shows liquid crystal droplet through the receiving unit of Fig. 2 and the view between the radiating portion;
Fig. 4 shows on the hole of nozzle that liquid crystal droplet rests on Fig. 2 and the view of not discharging from nozzle;
Fig. 5 be with experimental data draw thereon, to illustrate whether sensor increases along with the speed of coating certain amount of liquid crystal and the chart that transmits a signal to control module;
Whether Fig. 6 draws experimental data thereon, increases along with the speed of coating certain amount of liquid crystal and the chart that changes with weight that liquid crystal droplet is shown;
Fig. 7 is the process flow diagram that is used for determining first method of suitable speed according to of the present invention, and liquid crystal droplet is discharged from nozzle under this suitable speed, and drops onto on each panel area that marks on the motherboard and can not upspring;
Fig. 8 is the process flow diagram that is used for determining second method of suitable speed according to of the present invention, and liquid crystal droplet is discharged from nozzle under this suitable speed, and drops onto on each panel area that marks on the motherboard and can not upspring; And
Fig. 9 is according to the process flow diagram that is used for determining third party's method of suitable speed of the present invention, and liquid crystal droplet is discharged from nozzle under this suitable speed, and drops onto on each panel area that marks on the motherboard and can not upspring.
Embodiment
To be described in detail preferred implementation of the present invention now, the example of preferred implementation of the present invention is shown in the drawings.
Fig. 1 is the stereographic map of an embodiment of the invention.
As shown in fig. 1, liquid crystal coating comprises main frame 11, worktable 12, saddle 13, first driver element 14, second driver element 17, coating head unit scaffold 15, coating head unit 20, input block (not shown), detecting unit 25 and detecting unit 30, control module (not shown) and cleaning unit (not shown).
On worktable 12, be provided with the linear electric machine (not shown) that drives saddle 13.
Coating head unit scaffold 15 is positioned to across above saddle 13.
Coating head unit 20 is arranged on the coating head unit scaffold 15.
Detecting unit comprises sensor 25 and electronic scales 30.Electronic scales 30 is arranged on the main frame 11.The weight of electronic scales 30 weighing liquid crystal droplets.Electronic scales 30 comprises that liquid crystal droplet drops onto the measurement plate 31 on it.
When liquid crystal droplet drops onto on the measurement plate 31, the weight of electronic scales 30 weighing liquid crystal droplets.In the time of on the position beyond liquid crystal droplet drops onto measurement plate 31, the weight of electronic scales 30 not weighing liquid crystal droplets.
One end of second driver element 17 is connected in coating head unit scaffold 15, and its other end is connected in coating head unit 20.
Fig. 2 is the view of the amplifier section A of Fig. 1.Dotted arrow represents that light is transmitted to the route of acceptance division from emission part.
As shown in Figure 2, coating head unit 20 comprises body 21, nozzle support 22, sensor support 24 and sensor 25.
Nozzle N is arranged on the bottom side of nozzle support 22.Nozzle N is placed between the first sensor supporting member 24a and the second sensor support 24b.Liquid crystal droplet D discharges from nozzle N.
Fig. 3 shows liquid crystal droplet through the emission part 25a of Fig. 2 and the view between the acceptance division 25b.
As shown in Figure 3, liquid crystal droplet is discharged from nozzle N.
Liquid crystal droplet is through between emission part 25a and the acceptance division 25b.
In the time of between liquid crystal droplet is by emission part 25a and acceptance division 25b, light is by being transmitted to acceptance division 25b through the liquid crystal droplet between emission part 25a and the acceptance division 25b from emission part 25a.The light amount that receives when as a result, the light amount of acceptance division 25b reception is not propagated by liquid crystal droplet less than light.At this moment, sensor 25 transmits a signal to the control module (not shown).
When control module when sensor 25 is received signal, it thinks that liquid crystal droplet discharges from nozzle N.
Import initial velocity in input block, coating head unit 20 is coated with certain amount of liquid crystal with this initial velocity by nozzle N.
In input block, import definite value.Input block can comprise touch-screen, keyboard or handwriting pad.
Fig. 4 illustrates on the hole of nozzle N that liquid crystal droplet rests on Fig. 2 and the view of not discharging from nozzle N.
Fig. 5 be with experimental data draw thereon, to illustrate whether sensor increases along with the speed of coating certain amount of liquid crystal and the chart that transmits a signal to control module.
Fig. 7 is the process flow diagram that is used for determining first method of suitable speed according to of the present invention, and liquid crystal droplet is discharged from nozzle under this suitable speed, and drops onto on each panel area that marks on the motherboard and can not upspring.
Describe first method of determining suitable speed now, coating head unit is with this suitable speed coating certain amount of liquid crystal.
Suppose that initial velocity is 4.8m/s.Initial velocity can be greater than or less than 4.8m/s.Further the hypothesis definite value is 1.6m/s.Definite value can be greater than or less than 1.6m/s.Further the weight of hypothesis liquid crystal droplet is 0.5mg.The weight of liquid crystal droplet can be greater than or less than 0.5mg.Further the hypothesis nozzle inside diameter is 0.2m.Nozzle inside diameter can be greater than or less than 0.2m.
The initial velocity of input 4.8m/s in input block, coating head unit 20 is coated with certain amount of liquid crystal with this speed by nozzle N at first.
The definite value of input 1.6m/s in input block.
Detecting unit detects the liquid crystal droplet of discharging from nozzle N.
Further the hypothesis detecting unit is a sensor 25.
With reference to Fig. 7, when detecting unit did not detect speed and is the liquid crystal droplet of initial velocity, control module was carried out following steps: the 1-1 step obtains instantaneous velocity by add definite value on initial velocity; The 1-2 step, indication coating head unit 20 is coated with certain amount of liquid crystal with this instantaneous velocity by nozzle N; And the 1-3 step, when detecting unit detects speed for the liquid crystal droplet of this instantaneous velocity, this instantaneous velocity is defined as suitable speed.
When detecting unit does not detect speed for the liquid crystal droplet of this instantaneous velocity, control module repeats the 1-2 step, replace this instantaneous velocity by the instantaneous velocity that on initial velocity, repeatedly adds the definite value acquisition and come repetition 1-2 step, in the moment up to detect liquid crystal droplet when detecting unit, this instantaneous velocity is defined as suitable speed.
When control module detected speed and is the liquid crystal droplet of initial velocity, control module was carried out following steps: the 2-1 step obtains instantaneous velocity by deduct definite value from initial velocity; The 2-2 step, indication coating head unit 20 is coated with certain amount of liquid crystal with this instantaneous velocity by nozzle N; And the 2-3 step, when detecting unit does not detect speed for the liquid crystal droplet of this instantaneous velocity, initial velocity is defined as suitable speed.
When detecting unit detects speed for the liquid crystal droplet of this instantaneous velocity, control module repeats the 2-2 step, replace this instantaneous velocity by the instantaneous velocity that repeatedly deducts the definite value acquisition from initial velocity and come repetition 2-2 step, till when detecting unit does not detect liquid crystal droplet.
Then, the last instantaneous velocity with detected liquid crystal droplet is defined as suitable speed.
As shown in Figures 4 and 5, when coating head unit 20 during with the initial velocity of 4.8m/s coating certain amount of liquid crystal, liquid crystal droplet rests on the hole of nozzle N and does not discharge from nozzle N.In this case, as shown in Figure 5, there is not liquid crystal droplet through between emission part 25a and the acceptance division 25b.Sensor 25 does not transmit a signal to control module.
As a result, control module judges that liquid crystal droplet does not drip from nozzle N.
The 1-1 step is described now.
Control module obtains the instantaneous velocity of 6.4m/s by the definite value that adds 1.6m/s on the initial velocity of 4.8m/s.
The 1-2 step is described now.
Control module indication coating head unit 20 is coated with certain amount of liquid crystal with the instantaneous velocity of 6.4m/s by nozzle N.
Liquid crystal droplet was removed from the hole of nozzle N in the cleaning unit before being coated with certain amount of liquid crystal by nozzle N.
The 1-3 step is described now.
As shown in Fig. 3 and Fig. 5, when coating head unit 20 during with the instantaneous velocity of 6.4m/s coating certain amount of liquid crystal, liquid crystal droplet is discharged from nozzle N, and through between emission part 25a and the acceptance division 25b.At this moment, sensor 25 transmits a signal to control module and drips from nozzle N with notice control module liquid crystal droplet.
When control module when sensor 25 is received signal, its judges that liquid crystal droplet drips from nozzle N.
Control module can be discharged the instantaneous velocity of 6.4m/s determine the to attach most importance to liquid crystal droplet of 0.5mg under this speed from nozzle N, and from the suitable speed of nozzle N drippage.
The weight of supposing liquid crystal droplet is 0.1mg but not 0.5mg, and nozzle inside diameter, initial velocity and definite value all remain unchanged simultaneously.In this case, as shown in Figures 4 and 5, even when coating head unit 20 during with the instantaneous velocity of 6.4m/s coating certain amount of liquid crystal, liquid crystal droplet also can rest on the hole of nozzle N and can not discharge from nozzle N.As a result, sensor 25 does not transmit a signal to control module.
When control module not when sensor 25 is received signal, its judges that liquid crystal droplet does not drip from nozzle N.
Control module obtains instantaneous velocity by the definite value that repeatedly adds 1.6m/s on the initial velocity of 4.8m/s and repeatedly repeats the 1-2 step.The number of times of supposing repetition 1-2 step is 2.As a result, obtain the instantaneous velocity of 8m/s (4.8m/s+1.6m/s+1.6m/s).
Control module indication coating head unit 20 is by the instantaneous velocity coating certain amount of liquid crystal of nozzle N with 8m/s.
Liquid crystal droplet was removed from the hole of nozzle N in the cleaning unit before being coated with certain amount of liquid crystal by nozzle N.
As shown in Fig. 3 and Fig. 5, when coating head unit 20 during with the instantaneous velocity of 8m/s coating certain amount of liquid crystal, the liquid crystal droplet of heavy 0.1mg is discharged from nozzle N, and drips from nozzle N.In this case, liquid crystal droplet is through between emission part 25a and the acceptance division 25b.
When control module when sensor 25 is received signal, its judges that liquid crystal droplet drips from nozzle N.Control module can be discharged the instantaneous velocity of 8m/s determine the to attach most importance to liquid crystal droplet of 0.1mg under this speed from nozzle N, and from the suitable speed of nozzle N drippage.
Suppose that the liquid crystal droplet of heavy 0.5mg can discharge from nozzle N, and be 6.4m/s but not 4.8m/s from the initial velocity of nozzle N drippage.
As shown in Fig. 3 and Fig. 5, when coating head unit 20 during with the initial velocity of 6.4m/s coating certain amount of liquid crystal, liquid crystal droplet is discharged from nozzle N, and drips from nozzle N.In this case, liquid crystal droplet is through between emission part 25a and the acceptance division 25b.Sensor 25 transmits a signal to control module, drips with notice control module liquid crystal droplet.When control module when sensor 25 is received signal, its judges that liquid crystal droplet drips from nozzle N.
The 2-1 step is described now.
Control module obtains the instantaneous velocity of 4.8m/s by the definite value that deducts 1.6m/s from the initial velocity of 6.4m/s.
The 2-2 step is described now.
Control module indication coating head unit 20 is by the instantaneous velocity coating certain amount of liquid crystal of nozzle N with 4.8m/s.Liquid crystal droplet was removed from the hole of nozzle N in the cleaning unit before being coated with certain amount of liquid crystal by nozzle N.
The 2-3 step is described now.
As shown in Figures 4 and 5, when coating head unit 20 during with the instantaneous velocity of 4.8m/s coating certain amount of liquid crystal, liquid crystal droplet rests on the hole of nozzle N and can not discharge from nozzle N.In this case, as shown in Figure 5, there is not liquid crystal droplet through between emission part 25a and the acceptance division 25b.Sensor 25 does not transmit a signal to control module.As a result, when control module not when sensor 25 is received signal, its judges that liquid crystal droplet does not drip from nozzle N.
Control module is defined as suitable speed with the initial velocity of 6.4m/s, and this speed is the last instantaneous velocity of detected liquid crystal droplet.
Suppose that the liquid crystal droplet of heavy 0.5mg can discharge from nozzle N, and be 8m/s but not 4.8m/s from the initial velocity of nozzle N drippage.
As shown in Fig. 3 and Fig. 5, when coating head unit 20 during with the initial velocity of 8m/s coating certain amount of liquid crystal, liquid crystal droplet is discharged from nozzle N, and drips from nozzle N.In this case, liquid crystal droplet is through between emission part 25a and the acceptance division 25b.Sensor 25 transmits a signal to control module, drips with notice control module liquid crystal droplet.When control module when sensor 25 is received signal, its judges that liquid crystal droplet drips.
The 2-1 step is described now.
Control module deducts the instantaneous velocity of the definite value acquisition 6.4m/s of 1.6m/s by the initial velocity from 8m/s.
The 2-2 step is described now.
Control module indication coating head unit 20 is by the instantaneous velocity coating certain amount of liquid crystal of nozzle N with 6.4m/s.Liquid crystal droplet was removed from the hole of nozzle N in the cleaning unit before being coated with certain amount of liquid crystal by nozzle N.
The 2-3 step is described now.
As shown in Fig. 3 and Fig. 5, when coating head unit 20 during with the instantaneous velocity of 6.4m/s coating certain amount of liquid crystal, liquid crystal droplet is discharged from nozzle N, and drips from nozzle N.In this case, liquid crystal droplet is through between emission part 25a and the acceptance division 25b.Sensor 25 transmits a signal to control module, drips with notice control module liquid crystal droplet.When control module when sensor 25 is received signal, its judges that liquid crystal droplet drips from nozzle N.
Control module comes repetition 2-2 step by the definite value that the initial velocity from 8m/s deducts 1.6m/s for several times.The number of times of supposing repetition 2-2 step is 2.As a result, obtain the instantaneous velocity of 4.8m/s (8m/s-1.6m/s-1.6m/s).
Control module indication coating head unit 20 is by the instantaneous velocity coating certain amount of liquid crystal of nozzle N with 4.8m/s.
Liquid crystal droplet was removed from the hole of nozzle N in the cleaning unit before being coated with certain amount of liquid crystal by nozzle N.
As shown in Figures 4 and 5, when coating head unit 20 during with the instantaneous velocity of 4.8m/s coating certain amount of liquid crystal, liquid crystal droplet rests on the hole of nozzle N and can not discharge from nozzle N.In this case, as shown in Figure 5, there is not liquid crystal droplet through between emission part 25a and the acceptance division 25b.Sensor 25 does not transmit a signal to control module.
Control module is defined as suitable speed with the instantaneous velocity of 6.4m/s, and this speed is the last instantaneous velocity of detected liquid crystal droplet.
Suppose that detecting unit is an electronic scales 30.
Fig. 6 draws experimental data thereon, increases along with the speed of coating certain amount of liquid crystal and the chart that changes with weight that liquid crystal droplet is shown.
As shown in fig. 1, control module indicates first driver element 14 and second driver element 17 that the nozzle N of coating head unit 20 is positioned to measurement plate 31 tops that are positioned at electronic scales 30.
Suppose that initial velocity is 6.4m/s.
As shown in Figure 6, control module indication coating head unit 20 is by the initial velocity coating certain amount of liquid crystal of nozzle N with 4.8m/s, so that the liquid crystal droplet of heavy 0.5mg is discharged from nozzle N.
Liquid crystal droplet drops onto to be measured on the plate 31.
Electronic scales 30 transmits a signal to control module, and the liquid crystal droplet that weighs 0.5mg with the notice control module drips from nozzle N.
Owing to determine that with electronic scales 30 operation of suitable speed is identical with sensor 25, so no longer be described.
Fig. 8 is the process flow diagram that is used for determining second method of suitable speed according to of the present invention, and liquid crystal droplet is discharged from nozzle under this suitable speed, and drops onto on each panel area that marks on the motherboard and can not upspring.
Describe second method of determining suitable speed now, coating head unit is with this suitable speed coating certain amount of liquid crystal.
Suppose that detecting unit is a sensor 25.Weight, initial velocity and the definite value of supposing liquid crystal droplet are respectively 0.5mg, 4.8m/s and 1.6m/s.
With reference to Fig. 8, when detecting unit did not detect speed and is the liquid crystal droplet of initial velocity, control module was carried out following steps: first step obtains instantaneous velocity by add definite value on initial velocity; Second step, indication coating head unit 20 is coated with certain amount of liquid crystal with this instantaneous velocity by nozzle N; And third step, when detecting unit detects speed for the liquid crystal droplet of this instantaneous velocity, this instantaneous velocity is defined as suitable speed.
When detecting unit does not detect speed for the liquid crystal droplet of this instantaneous velocity, control module repeats second step, replace this instantaneous velocity by the instantaneous velocity that on initial velocity, repeatedly adds the definite value acquisition and come repetition second step, detect up to detecting unit till the moment of liquid crystal droplet.
Then this instantaneous velocity is defined as suitable speed.
When detecting unit detected speed and is the liquid crystal droplet of initial velocity, control module was carried out the step that initial velocity is defined as suitable speed.
As shown in Figures 4 and 5, when coating head unit 20 during with the initial velocity of 4.8m/s coating certain amount of liquid crystal, liquid crystal droplet rests on the hole of nozzle N, and can not discharge from nozzle N.In this case, as shown in Figure 5, there is not liquid crystal droplet through between emission part 25a and the acceptance division 25b.Sensor 25 does not transmit a signal to control module.
When control module not when sensor 25 is received signal, its judges that liquid crystal droplet does not drip from nozzle N.
First step is described now.
Control module obtains the instantaneous velocity of 6.4m/s by the definite value that adds 1.6m/s on the initial velocity of 4.8m/s.
Second step is described now.
Control module indication coating head unit 20 is coated with certain amount of liquid crystal with the instantaneous velocity of 6.4m/s by nozzle N.
Liquid crystal droplet was removed from the hole of nozzle N in the cleaning unit before by nozzle N coating certain amount of liquid crystal.
Third step is described now.
As shown in Fig. 3 and Fig. 5, when coating head unit 20 during with the instantaneous velocity of 6.4m/s coating certain amount of liquid crystal, liquid crystal droplet is discharged from nozzle N, and through between emission part 25a and the acceptance division 25b.At this moment, sensor 25 transmits a signal to control module, drips from nozzle N with notice control module liquid crystal droplet.
When control module when sensor 25 is received signal, its judges that liquid crystal droplet drips from nozzle N.Control module is defined as suitable speed with the instantaneous velocity of 6.4m/s, and the liquid crystal droplet of heavy 0.5mg can be discharged from nozzle N under this suitable speed, and drips from nozzle N.
Suppose that the liquid crystal droplet of heavy 0.5mg can discharge from nozzle N, and be 3.2m/s but not 4.8m/s from the initial velocity of nozzle N drippage.
As shown in Figures 4 and 5, when coating head unit 20 during with the initial velocity of 3.2m/s coating certain amount of liquid crystal, liquid crystal droplet rests on the hole of nozzle N, and can not discharge from nozzle N.
In this case, as shown in Figure 5, there is not liquid crystal droplet through between emission part 25a and the acceptance division 25b.Sensor 25 does not transmit a signal to control module.
When control module not when sensor 25 is received signal, its judges that liquid crystal droplet does not drip from nozzle N.
First step is described now.
Control module obtains the instantaneous velocity of 4.8m/s by the definite value that adds 1.6m/s on the initial velocity of 3.2m/s.
Second step is described now.
Control module indication coating head unit 20 is by the instantaneous velocity coating certain amount of liquid crystal of nozzle N with 4.8m/s.
Liquid crystal droplet was removed from the hole of nozzle N in the cleaning unit before being coated with certain amount of liquid crystal by nozzle N.
Third step is described now.
As shown in Figures 4 and 5, when coating head unit 20 during with the instantaneous velocity of 4.8m/s coating certain amount of liquid crystal, liquid crystal droplet rests on the hole of nozzle N, and does not discharge from nozzle N.In this case, there is not liquid crystal droplet through between emission part 25a and the acceptance division 25b.Sensor 25 does not transmit a signal to control module.
When control module not when sensor 25 is received signal, its judges that liquid crystal droplet do not discharge from nozzle N.Control module comes repetition second step by the definite value that repeatedly adds 1.6m/s on the initial velocity of 3.2m/s.The number of times of supposing repetition second step is 2.As a result, obtain the instantaneous velocity of 6.4m/s (3.2m/s+1.6m/s+1.6m/s).
Control module indication coating head unit 20 is coated with certain amount of liquid crystal with the instantaneous velocity of 6.4m/s by nozzle N.
Liquid crystal droplet was removed from the hole of nozzle N in the cleaning unit before being coated with certain amount of liquid crystal by nozzle N.
As shown in Fig. 3 and Fig. 5, when coating head unit 20 during with the instantaneous velocity of 6.4m/s coating certain amount of liquid crystal, the liquid crystal droplet of heavy 0.5mg is discharged from nozzle N, and drips from nozzle N.In this case, liquid crystal droplet is through between emission part 25a and the acceptance division 25b.
When control module when sensor 25 is received signal, its judges that liquid crystal droplet drips.
Control module is defined as suitable speed with the instantaneous velocity of 6.4m/s, and the liquid crystal droplet of heavy 0.5mg can be discharged from nozzle N under this suitable speed, and drips from nozzle N.
Suppose that liquid crystal droplet can discharge and be 6.4m/s but not 4.8m/s from the initial velocity of nozzle N drippage from nozzle N.
As shown in Fig. 3 and Fig. 5, when coating head unit 20 during with the initial velocity of 6.4m/s coating certain amount of liquid crystal, liquid crystal droplet is discharged from nozzle N, and drips from nozzle N.In this case, liquid crystal droplet is through between emission part 25a and the acceptance division 25b.Sensor 25 transmits a signal to control module, drips with notice control module liquid crystal droplet.When control module when sensor 25 is received signal, its judges that liquid crystal droplet drips.
Control module is defined as suitable speed with the initial velocity of 6.4m/s.
Because in the weight of liquid crystal droplet is under the situation of 0.1mg but not 0.5mg, the method for describing in the method for determining suitable speed and first method is identical, so no longer be described.Because the method for using electronic scales 30 but not describing in method that sensor 25 is determined suitable speed and first method is identical, so no longer be described.
Fig. 9 is the process flow diagram that is used for determining third party's method of suitable speed according to of the present invention, and liquid crystal droplet is discharged from nozzle under this suitable speed, and drops onto on each panel area that marks on the motherboard and can not upspring.
Describe third party's method of determining suitable speed now, coating head unit is with this suitable speed coating certain amount of liquid crystal.
Suppose that detecting unit is a sensor 25.The weight of supposing liquid crystal droplet is 0.5mg.
Initial velocity is in such velocity range: coating head unit 20 can be coated with certain amount of liquid crystal by nozzle, thereby liquid crystal droplet is dropped onto on the panel area.This velocity range can be determined according to experimental data.This means that when coating head unit 20 was coated with certain amount of liquid crystal with initial velocity, liquid crystal droplet was discharged from nozzle N, and dripped from nozzle N.
Suppose that initial velocity and definite value are respectively 6.4m/s and 1.6m/s.
With reference to Fig. 9, when detecting unit detected speed and is the liquid crystal droplet of initial velocity, control module was carried out following steps: first step obtains instantaneous velocity by deduct definite value from initial velocity; Second step, the indication coating head unit is coated with certain amount of liquid crystal with this instantaneous velocity by nozzle; And third step, when detecting unit does not detect speed for the liquid crystal droplet of this instantaneous velocity, initial velocity is defined as suitable speed.
When detecting unit detects speed for the liquid crystal droplet of this instantaneous velocity, control module repeats second step, replace this instantaneous velocity by the instantaneous velocity that repeatedly deducts the definite value acquisition from initial velocity and come repetition second step, do not detect up to detecting unit till the moment of liquid crystal droplet.
Then, the last instantaneous velocity with detected liquid crystal droplet is defined as suitable speed.
As shown in Fig. 3 and Fig. 5, when coating head unit 20 during with the initial velocity of 6.4m/s coating certain amount of liquid crystal, liquid crystal droplet is discharged from nozzle N, and drips from nozzle N.In this case, liquid crystal droplet is through between emission part 25a and the acceptance division 25b.Sensor 25 transmits a signal to control module, drips from nozzle N with notice control module liquid crystal droplet.When control module when sensor 25 is received signal, its judges that liquid crystal droplet drips from nozzle N.
First step is described now.
Because detecting unit has detected the liquid crystal droplet of discharging from nozzle N, so deduct the instantaneous velocity of the definite value acquisition 4.8m/s of 1.6m/s by initial velocity from 6.4m/s.
Second step is described now.
Control module indication coating head unit 20 is coated with certain amount of liquid crystal with the instantaneous velocity of 4.8m/s by nozzle N.
Third step is described now.
As shown in Figures 4 and 5, when coating head unit 20 during with the instantaneous velocity of 4.8m/s coating certain amount of liquid crystal, liquid crystal droplet rests on the hole of nozzle N, and does not discharge from nozzle N.In this case, as shown in Figure 5, there is not liquid crystal droplet through between emission part 25a and the acceptance division 25b.Sensor 25 does not transmit a signal to control module.
When control module not when sensor 25 is received signal, its judges that liquid crystal droplet does not drip from nozzle N.Control module is defined as suitable speed with the initial velocity of 6.4m/s, and this speed is the last instantaneous velocity of detected liquid crystal droplet.
Suppose that the liquid crystal droplet of heavy 0.5mg can discharge and be 8m/s but not 6.4m/s from the initial velocity of nozzle N drippage from nozzle N.
As shown in Fig. 3 and Fig. 5, when coating head unit 20 during with the initial velocity of 8m/s coating certain amount of liquid crystal, liquid crystal droplet is discharged from nozzle N, and drips from nozzle N.In this case, liquid crystal droplet is through between emission part 25a and the acceptance division 25b.Sensor 25 transmits a signal to control module, drips from nozzle N with notice control module liquid crystal droplet.When control module when sensor 25 is received signal, its judges that liquid crystal droplet drips from nozzle.
First step is described now.
Control module deducts the instantaneous velocity of the definite value acquisition 6.4m/s of 1.6m/s by the initial velocity from 8m/s.
Second step is described now.
Control module indication coating head unit 20 is coated with certain amount of liquid crystal with the instantaneous velocity of 6.4m/s by nozzle N.
Liquid crystal droplet was removed from the hole of nozzle N in the cleaning unit before being coated with certain amount of liquid crystal by nozzle N.
Third step is described now.
As shown in Fig. 3 and Fig. 5, when coating head unit 20 during with the instantaneous velocity of 6.4m/s coating certain amount of liquid crystal, liquid crystal droplet is discharged from nozzle N, and drips from nozzle N.In this case, liquid crystal droplet is through between emission part 25a and the acceptance division 25b.Sensor 25 transmits a signal to control module, drips from nozzle N with notice control module liquid crystal droplet.When control module when sensor 25 is received signal, its judges that liquid crystal droplet drips from nozzle N.
Control module comes repetition second step by the definite value acquisition instantaneous velocity that the initial velocity from 8m/s repeatedly deducts 1.6m/s.The number of times of supposing repetition second step is 2.As a result, obtain the instantaneous velocity of 4.8m/s (8m/s-1.6m/s-1.6m/s).
Control module indication coating head unit 20 is coated with certain amount of liquid crystal with the instantaneous velocity of 4.8m/s by nozzle N.
Liquid crystal droplet was removed from the hole of nozzle N in the cleaning unit before being coated with certain amount of liquid crystal by nozzle N.
As shown in Figures 4 and 5, when coating head unit 20 during with the instantaneous velocity of 4.8m/s coating certain amount of liquid crystal, liquid crystal droplet rests on the hole of nozzle N and does not discharge from nozzle N.In this case, as shown in Figure 5, there is not liquid crystal droplet through between emission part 25a and the acceptance division 25b.Sensor 25 does not transmit a signal to control module.
Control module is defined as suitable speed with 6.4m/s, and this speed is the last instantaneous velocity of detected liquid crystal droplet.
Because the method for describing in the method for determining suitable speed under the weight of liquid crystal droplet is the situation of 0.1mg but not 0.5mg and first method is identical, so no longer be described.Because the method for using electronic scales 30 but not describing in method that sensor 25 is determined suitable speed and first method is identical, so no longer be described.
Describe the cubic method of determining suitable speed now, coating head unit 20 is with this suitable speed coating certain amount of liquid crystal.
Suppose that detecting unit is an electronic scales 30.The weight of supposing liquid crystal droplet is 0.5mg.
In cubic method, use electronic scales 30 to determine suitable speed, coating head unit 20 makes liquid crystal droplet discharge and drop onto on the panel area from nozzle N with this suitable speed coating certain amount of liquid crystal, does not measure on plate 31 other position in addition and can not upspring and drop onto.
In cubic method, need the electronic scales 30 of the weight of ponderable quantity liquid crystal droplet.Its reason is the weight that sensor 25 can not the weighing liquid crystal droplet.
Initial velocity is in such velocity range: wherein coating head unit can not cause liquid crystal droplet to rest on the hole of nozzle N, and can not discharge from nozzle N by nozzle N coating certain amount of liquid crystal.
This velocity range can be determined according to experimental data.This means that when coating head unit 20 was coated with certain amount of liquid crystal with initial velocity, liquid crystal droplet was not discharged from nozzle N, and does not drip from nozzle N.
Suppose that initial velocity and definite value are respectively 4.8m/s and 1.6m/s.
When electronic scales was not weighed to speed and is the weight of liquid crystal droplet of initial velocity, control module is carried out following steps: first step obtained instantaneous velocity by add definite value on initial velocity; Second step, indication coating head unit 20 is coated with certain amount of liquid crystal with this instantaneous velocity by nozzle N; And third step, repeat second step, replace this instantaneous velocity and come repetition second step by on initial velocity, repeatedly adding instantaneous velocity that definite value obtains, no longer constant up to the weight of liquid crystal droplet and till moment of beginning to reduce.
When the weight of liquid crystal droplet is no longer constant and when beginning to reduce, any instantaneous velocity the during constant weight of the liquid crystal droplet that nozzle is discharged is defined as suitable speed.
As shown in fig. 1, when liquid crystal droplet from measuring plate 31 and upspring and split into broken, and some broken when dropping onto on the position of measuring beyond the plate 31, the weight of the liquid crystal droplet that measures is no longer constant and begin to reduce.As a result, rest on the weight of the weight of the liquid crystal droplet on the measurement plate 31 less than the liquid crystal droplet of discharging from nozzle N.
As shown in Figure 6, when coating head unit 20 is coated with certain amount of liquid crystal with the speed greater than 8m/s by nozzle N, the liquid crystal droplet of heavy 0.1mg is upspring from measuring plate 31, is fragmented into less drop, and some less drop drops onto to be measured on plate 31 position in addition.Along with speed increases from 8m/s, broken of more drops drops onto on measurement plate 31 position in addition.
This means, when coating head unit 20 with greater than the speed of 8m/s during by nozzle N coating certain amount of liquid crystal, the liquid crystal droplet of the heavy 0.1mg that discharges from nozzle N is upspring from panel area, is fragmented into broken, some broken drops onto on the panel area position in addition.
As shown in Fig. 4 and Fig. 6, when coating head unit 20 during with the initial velocity of 4.8m/s coating certain amount of liquid crystal, liquid crystal droplet rests on the hole of nozzle N, and does not discharge from nozzle N.Electronic scales can not be weighed to the weight of liquid crystal droplet.The weight of the liquid crystal droplet that measures at this moment, is 0mg (zero mg).
Electronic scales 30 transmits a signal to control module, is 0mg (zero mg) with the weight of notifying the control module liquid crystal droplet.
First step is described now.
When control module not when electronic scales 30 is received signal, its judges that liquid crystal droplet does not drip from nozzle N.
Do not have to reduce owing to weight (0mg) maintenance of drop is constant, so obtain the instantaneous velocity of 6.4m/s by the definite value that on the initial velocity of 4.8m/s, adds 1.6m/s.
The cleaning unit is before being coated with certain amount of liquid crystal by nozzle N.Remove liquid crystal droplet from the hole of nozzle N.
Second step is described now.
Control module indication coating head unit 20 is with the instantaneous velocity coating certain amount of liquid crystal of 6.4m/s.
Third step is described now.
As shown in Fig. 3 and Fig. 6, when coating head unit 20 during with the instantaneous velocity of 6.4m/s coating certain amount of liquid crystal, liquid crystal droplet is discharged from nozzle N, and drops onto on the electronic scales 30.The weight of electronic scales 30 weighing liquid crystal droplets.The heavy 0.5mg of liquid crystal droplet.Electronic scales 30 transmits a signal to control module, is 0.5mg with the weight of notifying the control module liquid crystal droplet.
Control module judges that the liquid crystal droplet of heavy 0.5mg drips from nozzle N.
The weight of the liquid crystal droplet that measures is increased to 0.5mg and not minimizing from 0 (zero) mg.Therefore, come repetition second step by the definite value that on the initial velocity of 4.8m/s, repeatedly adds 1.6m/s.The number of times that repeats second step is 2.Thereby instantaneous velocity is 8m/s (4.8m/s+1.6m/s+1.6m/s).
Control module indication coating head unit 20 is coated with certain amount of liquid crystal with the instantaneous velocity of 8m/s by nozzle N.
As shown in Fig. 3 and Fig. 6, when coating head unit 20 during with the instantaneous velocity of 8m/s coating certain amount of liquid crystal, liquid crystal droplet is discharged from nozzle N, and drops onto on the electronic scales 30.The weight of electronic scales 30 weighing liquid crystal droplets.The heavy 0.5mg of liquid crystal droplet.Electronic scales 30 transmits a signal to control module, is 0.5mg with the weight of notifying the control module liquid crystal droplet.
Control module judges that the liquid crystal droplet of heavy 0.5mg drips from nozzle N.
The weight of the liquid crystal droplet that measures (0.5mg) keeps constant and does not reduce.Therefore, obtain instantaneous velocity by the definite value that on the initial velocity of 4.8m/s, repeatedly adds 1.6m/s and come repetition second step.The number of times that repeats second step is 3.Thereby instantaneous velocity is 9.6m/s (4.8m/s+1.6m/s+1.6m/s+1.6m/s).
Control module indication coating head unit 20 is coated with certain amount of liquid crystal with 9.6 instantaneous velocity by nozzle N.
As shown in Fig. 3 and Fig. 6, when coating head unit 20 during with the instantaneous velocity of 9.6m/s coating certain amount of liquid crystal, liquid crystal droplet is discharged from nozzle N, and drops onto on the electronic scales 30.The weight of electronic scales 30 weighing liquid crystal droplets.The heavy 0.25mg of liquid crystal droplet.
Electronic scales 30 transmits a signal to control module, is 0.25mg with the weight of notifying the control module liquid crystal droplet.
Control module judges that heavy 0.25 liquid crystal droplet drips from nozzle N.
The weight of the liquid crystal droplet that measures reduces to 0.25mg from keeping constant 0.5mg.Therefore, second step stops.
As shown in Figure 6, when coating head unit 20 during with the instantaneous velocity of 6.4m/s and 8m/s coating certain amount of liquid crystal, the weight of the liquid crystal droplet that measures (0.5mg) is constant.
Control module is selected one from the instantaneous velocity of 6.4m/s and 8m/s, and this instantaneous velocity is defined as suitable speed.
As shown in Figure 6, when coating head unit 20 during with the instantaneous velocity of 8m/s and 9.6m/s coating certain amount of liquid crystal, the weight of the liquid crystal droplet that measures (0.1mg) is constant.
Control module is selected one from the instantaneous velocity of 8m/s and 9.6m/s, and this instantaneous velocity is defined as suitable speed.
The 5th method of suitable speed is determined in explanation now, and coating head unit 20 is with this suitable speed coating certain amount of liquid crystal.
Except the moment no longer constant in the weight of liquid crystal droplet and that begin to reduce, the mean value of the instantaneous velocity of the constant weight of the liquid crystal droplet that will discharge from nozzle is defined as outside the suitable speed, and the 5th method is identical with cubic method.
As shown in Figure 6, when coating head unit 20 during with the instantaneous velocity of 6.4m/s and 8m/s coating certain amount of liquid crystal, the weight of the liquid crystal droplet that measures (0.5mg) is constant.
Control module is defined as suitable speed with the mean value 7.2m/s of the instantaneous velocity of 6.4m/s and 8m/s.
As shown in Figure 6, when coating head unit 20 during with the instantaneous velocity of 8m/s and 9.6m/s coating certain amount of liquid crystal, the weight of the liquid crystal droplet that measures (0.1mg) is constant.
Control module is defined as suitable speed with the mean value 8.8m/s of the instantaneous velocity of 8m/s and 9.6m/s.
Because under the prerequisite that does not deviate from spirit of the present invention or essential characteristic, can implement the present invention in a variety of forms, so should also be appreciated that, except as otherwise noted, otherwise above-mentioned embodiment is not limited to above-described any details, but should be interpreted as widely and be positioned at the spirit and scope of the present invention that claims limit, therefore, dropping on the boundary of claim and the interior all changes and the modification of equivalent scope of scope or these boundaries and scope all will be contained by claims.
Claims (11)
1. liquid crystal coating comprises:
The input block of input initial velocity, coating head unit is coated with certain amount of liquid crystal with described initial velocity by nozzle;
Detecting unit, it detects the liquid crystal droplet of discharging from described nozzle; And
Control module, when described detecting unit did not detect liquid crystal droplet, described control module was carried out following steps:
The 1-1 step obtains instantaneous velocity by add definite value on described initial velocity;
The 1-2 step indicates described coating head unit to be coated with certain amount of liquid crystal with described instantaneous velocity by described nozzle; And
The 1-3 step, when described detecting unit detects liquid crystal droplet, described instantaneous velocity is defined as suitable speed, and repeat described 1-2 step, replace described instantaneous velocity by the instantaneous velocity that on described initial velocity, repeatedly adds the above definite value acquisition and repeat described 1-2 step, detect up to described detecting unit till the moment of described liquid crystal droplet, when described detecting unit does not detect described liquid crystal droplet, described instantaneous velocity is defined as described suitable speed, and
When described detecting unit detected described liquid crystal droplet, described control module was carried out following steps:
The 2-1 step obtains instantaneous velocity by deduct definite value from described initial velocity;
The 2-2 step indicates described coating head unit to be coated with certain amount of liquid crystal with described instantaneous velocity by described nozzle; And
The 2-3 step, when described detecting unit does not detect liquid crystal droplet, described initial velocity is defined as described suitable speed, and repeat described 2-2 step, replace described instantaneous velocity by the instantaneous velocity that from described initial velocity, repeatedly deducts the definite value acquisition and repeat described 2-2 step, do not detect up to described detecting unit till the moment of described liquid crystal droplet, when described detecting unit detects described liquid crystal droplet, the last instantaneous velocity of detected liquid crystal droplet is defined as described suitable speed.
2. liquid crystal coating comprises:
The input block of input initial velocity, coating head unit is coated with certain amount of liquid crystal with described initial velocity by nozzle;
Detecting unit, it detects the liquid crystal droplet of discharging from described nozzle; And
Control module, when described detecting unit did not detect described liquid crystal droplet, described control module was carried out following steps:
First step obtains instantaneous velocity by add definite value on described initial velocity;
Second step indicates described coating head unit to be coated with certain amount of liquid crystal with described instantaneous velocity by described nozzle; And
Third step, when described detecting unit detects liquid crystal droplet, described instantaneous velocity is defined as suitable speed, and repeat described second step, replace described instantaneous velocity by the instantaneous velocity that on described initial velocity, repeatedly adds the above definite value acquisition and repeat described second step, detect up to described detecting unit till the moment of described liquid crystal droplet, when described detecting unit does not detect described liquid crystal droplet, described instantaneous velocity is defined as described suitable speed, and
When described detecting unit detected described liquid crystal droplet, described control module was carried out the step that described initial velocity is defined as described suitable speed.
3. liquid crystal coating comprises:
The input block of input initial velocity, coating head unit is coated with certain amount of liquid crystal with described initial velocity by nozzle;
Detecting unit, it detects the liquid crystal droplet of discharging from described nozzle; And
Control module, when described detecting unit did not detect liquid crystal droplet, described control module was carried out following steps:
First step obtains instantaneous velocity by deduct definite value from described initial velocity;
Second step indicates described coating head unit to be coated with certain amount of liquid crystal with described instantaneous velocity by described nozzle; And
Third step, when described detecting unit does not detect liquid crystal droplet, described initial velocity is defined as suitable speed, and repeat described second step, replace described instantaneous velocity by the instantaneous velocity that from initial velocity, repeatedly deducts the definite value acquisition and repeat described second step, do not detect up to described detecting unit till the moment of described liquid crystal droplet, when described detecting unit detects described liquid crystal droplet, the last instantaneous velocity of detected liquid crystal droplet is defined as described suitable speed, and
Wherein, described initial velocity is in such velocity range: wherein said coating head unit can be coated with certain amount of liquid crystal by described nozzle, thereby described liquid crystal droplet is dropped onto on the described panel area.
4. as the described liquid crystal coating of each claim in the claim 1 to 3, further comprise the cleaning unit, when not detecting described liquid crystal droplet, the hole of described nozzle is cleared up in described cleaning unit.
5. as the described liquid crystal coating of each claim in the claim 1 to 3, wherein, described detecting unit is a sensor.
6. as the described liquid crystal coating of each claim in the claim 1 to 3, wherein, described detecting unit is an electronic scales.
7. liquid crystal coating comprises:
The input block of input initial velocity, coating head unit is coated with certain amount of liquid crystal with described initial velocity by nozzle;
Electronic scales, its weighing is from the weight of the liquid crystal droplet of described nozzle discharge; And
Control module, when described electronic scales was not weighed to the weight of described liquid crystal droplet, described control module was carried out following steps:
First step obtains instantaneous velocity by add definite value on described initial velocity;
Second step indicates described coating head unit to be coated with certain amount of liquid crystal with described instantaneous velocity by described nozzle; And
Third step, repeat described second step, replace described instantaneous velocity by the instantaneous velocity that on described initial velocity, repeatedly adds the definite value acquisition and repeat described second step, no longer constant up to the weight of described liquid crystal droplet and till moment of beginning to reduce, any instantaneous velocity during the constant weight of the liquid crystal droplet that described nozzle is discharged is defined as suitable speed, and
Wherein, described initial velocity is in such velocity range: wherein said coating head unit can not be by described nozzle coating certain amount of liquid crystal, thereby described liquid crystal droplet is rested on the hole of described nozzle and can not discharge from nozzle.
8. liquid crystal coating as claimed in claim 7, wherein, no longer constant and when beginning to reduce, detected last instantaneous velocity is defined as described suitable speed in the weight of described liquid crystal droplet, the constant weight of the liquid crystal droplet of under described last instantaneous velocity, discharging from described nozzle.
9. liquid crystal coating as claimed in claim 7 wherein, increases and continues the constant moment subsequently in the weight of described liquid crystal droplet, and first instantaneous velocity during constant weight of the liquid crystal droplet that described nozzle is discharged is defined as described suitable speed.
10. liquid crystal coating comprises:
The input block of input initial velocity, coating head unit passes through the nozzle coating of liquid crystalline with described initial velocity;
Electronic scales, its weighing is from the weight of the liquid crystal droplet of described nozzle discharge; And
Control module, when described electronic scales was not weighed to the weight of described liquid crystal droplet, described control module was carried out following steps:
First step obtains instantaneous velocity by add definite value on described initial velocity;
Second step indicates described coating head unit to be coated with certain amount of liquid crystal with described instantaneous velocity by described nozzle; And
Third step, repeat described second step, replace described instantaneous velocity by the instantaneous velocity that on described initial velocity, repeatedly adds the definite value acquisition and repeat described second step, no longer constant up to the weight of described liquid crystal droplet and till moment of beginning to reduce, the mean value of the instantaneous velocity the during constant weight of the liquid crystal droplet that described nozzle is discharged is defined as suitable speed, and
Wherein, described initial velocity is in such velocity range: wherein said coating head unit can not be by described nozzle coating certain amount of liquid crystal, thereby described liquid crystal droplet is rested on the hole of described nozzle and can not discharge from described nozzle.
11. as the described liquid crystal coating of each claim in claim 7 and 10, further comprise the cleaning unit, when described electronic scales was not weighed to the weight of described liquid crystal droplet, the hole of described nozzle was cleared up in described cleaning unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020090015685A KR100909900B1 (en) | 2009-02-25 | 2009-02-25 | Liquid crystal dispenser |
| KR10-2009-0015685 | 2009-02-25 |
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| Publication Number | Publication Date |
|---|---|
| CN101813857A true CN101813857A (en) | 2010-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910129273A Pending CN101813857A (en) | 2009-02-25 | 2009-04-03 | Liquid crystal dispenser |
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| Country | Link |
|---|---|
| KR (1) | KR100909900B1 (en) |
| CN (1) | CN101813857A (en) |
| TW (1) | TWI350773B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102736295A (en) * | 2011-04-14 | 2012-10-17 | 乐金显示有限公司 | Apparatus and method for manufacturing display device |
| CN103331276A (en) * | 2013-07-12 | 2013-10-02 | 深圳市华星光电技术有限公司 | Ultrasonic cleaning device and coating machine with ultrasonic cleaning device |
| US9535272B2 (en) | 2011-04-14 | 2017-01-03 | Lg Display Co., Ltd. | Apparatus and method for manufacturing display device |
| CN109085705A (en) * | 2018-07-13 | 2018-12-25 | 深圳市华星光电技术有限公司 | Liquid crystal coating apparatus and liquid crystal coating method |
| CN111013939A (en) * | 2019-11-28 | 2020-04-17 | 郴州市海利微电子科技有限公司 | Automatic sealing dispenser for small liquid crystal display screen |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110018982A (en) * | 2009-08-19 | 2011-02-25 | 주식회사 탑 엔지니어링 | Method for discharging liquid crystal droplet using liquid crystal dispenser |
| KR101675102B1 (en) * | 2009-10-09 | 2016-11-10 | 주식회사 탑 엔지니어링 | Head apparatus and liqiud crystal dispenser having the same |
| KR101644834B1 (en) * | 2009-12-02 | 2016-08-03 | 주식회사 탑 엔지니어링 | Head apparatus and liqiud crystal dispenser having the same |
| KR20130124027A (en) * | 2012-05-04 | 2013-11-13 | 주식회사 탑 엔지니어링 | Device for inspecting liquid crystal dispensing state, and liquid crystal dispenser having the device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060039782A (en) * | 2004-11-03 | 2006-05-09 | 삼성전자주식회사 | Method and apparatus of dropping liquid crystalon substrate |
-
2009
- 2009-02-25 KR KR1020090015685A patent/KR100909900B1/en active IP Right Grant
- 2009-03-26 TW TW098109870A patent/TWI350773B/en not_active IP Right Cessation
- 2009-04-03 CN CN200910129273A patent/CN101813857A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102736295A (en) * | 2011-04-14 | 2012-10-17 | 乐金显示有限公司 | Apparatus and method for manufacturing display device |
| CN102736295B (en) * | 2011-04-14 | 2015-02-04 | 乐金显示有限公司 | Apparatus and method for manufacturing display device |
| US9535272B2 (en) | 2011-04-14 | 2017-01-03 | Lg Display Co., Ltd. | Apparatus and method for manufacturing display device |
| CN103331276A (en) * | 2013-07-12 | 2013-10-02 | 深圳市华星光电技术有限公司 | Ultrasonic cleaning device and coating machine with ultrasonic cleaning device |
| CN103331276B (en) * | 2013-07-12 | 2016-05-18 | 深圳市华星光电技术有限公司 | Ultrasonic cleaning equipment and the coating machine with this ultrasonic cleaning equipment |
| CN109085705A (en) * | 2018-07-13 | 2018-12-25 | 深圳市华星光电技术有限公司 | Liquid crystal coating apparatus and liquid crystal coating method |
| CN111013939A (en) * | 2019-11-28 | 2020-04-17 | 郴州市海利微电子科技有限公司 | Automatic sealing dispenser for small liquid crystal display screen |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI350773B (en) | 2011-10-21 |
| TW201031468A (en) | 2010-09-01 |
| KR100909900B1 (en) | 2009-07-30 |
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