CN106197769B - Excess pressure monitoring device, method and polaroid attaching device - Google Patents
Excess pressure monitoring device, method and polaroid attaching device Download PDFInfo
- Publication number
- CN106197769B CN106197769B CN201610663469.2A CN201610663469A CN106197769B CN 106197769 B CN106197769 B CN 106197769B CN 201610663469 A CN201610663469 A CN 201610663469A CN 106197769 B CN106197769 B CN 106197769B
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 86
- 238000012544 monitoring process Methods 0.000 claims abstract description 64
- 238000011897 real-time detection Methods 0.000 claims abstract description 12
- 230000003321 amplification Effects 0.000 claims description 44
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 44
- 239000003990 capacitor Substances 0.000 claims description 35
- 238000010521 absorption reaction Methods 0.000 claims description 26
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/16—Measuring force or stress, in general using properties of piezoelectric devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The present invention provides a kind of excess pressure monitoring device, method and polaroid attaching device.The excess pressure monitoring device includes: pressure sensing cell, for during polarizer sheet sticking, real-time detection to press the real-time pressure signal between idler wheel and display module to be measured；And, excess pressure monitoring unit, for comparing the real-time pressure value and preset threshold pressure value of stating real-time pressure signal, and is issued when comparing to obtain the real-time pressure value greater than the threshold pressure value and indicate that there are the alarm signals of excess pressure on display panel.Excess pressure monitoring device, method and polaroid attaching device of the present invention are it is possible to prevente effectively from the component caused by acting on during the fitting of production of liquid crystal displays because of the overtravel of pressing idler wheel and excess pressure in liquid crystal display panel breakage and circuit board damages.
Description
Technical field
The present invention relates to excess pressure monitoring technical field more particularly to a kind of excess pressure monitoring devices, method and polaroid
Attaching device.
Background technique
For in liquid crystal display device production process, needing to be executed on liquid crystal display panel using polaroid attaching device
The attaching process of polaroid will lead to LCM (Liquid if the pressure force for pressing idler wheel during polarizer sheet sticking is excessive
Crystal Module, liquid crystal display die set) broken screen.
When the polaroid attaching device is semi-automatic attaching device, can be pressed to because pressing the overtravel of idler wheel
The IC of component and Bonding (binding) region on PCB (Printed Circuit Board, printed circuit board) is (integrated
Circuit) cause liquid crystal display panel damaged.
Meanwhile although existing polaroid attaching device can work in conjunction with warning system, in polarizer sheet sticking
In the process, the prior art is unable to the pressure between real-time monitoring pressing idler wheel and liquid crystal display die set, on the one hand, for full-automatic
Polaroid attaching device, warning system can only scarce material to LCM, POL (polaroid) etc. carry out alarm, the over-voltage during being bonded
Power can not be monitored, and section can only be detected after manufacture；On the other hand, for Semiautomatic polarizer sheet sticking equipment, if behaviour
Make personnel's body and be strayed into alarm door range, warning system can generate alarm sounds, and polaroid attaching device is out of service, but should
Warning system is mainly used for the danger of prevention personnel's operation process, and overtravel and excess pressure can not real-time monitorings.
During polarizer sheet sticking, the drawbacks of overtravel, is mainly reflected in the side that pressing idler wheel can be rolled by display panel
Component on angular region and circuit board causes the component on display panel breakage and circuit board to damage, meanwhile, reprocessing weight
When new attaching polaroid POL, PR (photoetching, the Photoresist) glue remained on circuit board and component can bond idler wheel, lead
Cause pressing idler wheel direction of travel vertical with pressing forced direction, to directly contribute broken screen.Excess pressure mainly will cause liquid crystal
Display module is damaged, causes the increase of production yield decline and rework frequency.
Summary of the invention
The main purpose of the present invention is to provide a kind of excess pressure monitoring device, method and polaroid attaching devices, solve
Real-time monitoring pressing idler wheel and display to be measured are unable to when carrying out polarizer sheet sticking work to display module to be measured in the prior art
Pressure between mould group, thus cannot prevent due to pressing idler wheel and display module to be measured between there are excess pressure and overtravel and
Lead to the problem of display module breakage to be measured.
In order to achieve the above object, the present invention provides a kind of excess pressure monitoring devices, applied to including pressing idler wheel
Polaroid attaching device, the polaroid attaching device in display module to be measured for attaching polaroid, the excess pressure prison
Surveying device includes:
Pressure sensing cell, for during polarizer sheet sticking, pressing idler wheel described in real-time detection and described to be measured aobvious
Show the real-time pressure signal between mould group；And
Excess pressure monitoring unit, real-time pressure value and preset threshold pressure for the real-time pressure signal
Force value, and issue and indicated in the display module to be measured when comparing to obtain the real-time pressure value greater than the threshold pressure value
There are the alarm signals of excess pressure.
When implementation, the display module to be measured includes display panel to be measured and the display panel side to be measured is arranged in
Circuit board；
The real-time pressure signal includes the first real-time pressure between the pressing idler wheel and the display panel to be measured
Signal, and/or, the second real-time pressure signal between the pressing idler wheel and the circuit board；
The threshold pressure value includes first threshold pressure value and second threshold pressure value；The alarm signal includes first
Alarm signal and/or the second alarm signal；
The excess pressure monitoring unit be specifically used for the first real-time pressure signal the first real-time pressure value with
Preset first threshold pressure value, and the second real-time pressure value of the second real-time pressure signal with preset
Second threshold pressure value, and issue and refer to when comparing to obtain the first real-time pressure value greater than the first threshold pressure value
Show the first alarm signal on display panel there are excess pressure, when comparing to obtain the second real-time pressure value greater than described second
There are the second alarm signals of excess pressure on sending indicating circuit plate when threshold pressure value.
Specifically, the film piezo-electric sensor all covers the lateral surface of the pressing idler wheel.
When implementation, the pressure sensing cell includes film piezo-electric sensor and amplification module, wherein
The film piezo-electric sensor is pressed in real time for the first real-time pressure signal described in real-time detection and/or described second
Force signal, and the first real-time pressure signal is converted into the first real-time voltage signal, by the second real-time pressure signal
The second real-time voltage signal is converted to, the first real-time voltage signal and/or the second real-time voltage signal are sent to
The amplification module；
The amplification module is connect with the film piezo-electric sensor, for amplify the first real-time voltage signal and/
Or the second real-time voltage signal, and in real time by amplified first real-time voltage signal and/or amplified described second
Voltage signal is sent to the excess pressure monitoring unit；
The excess pressure monitoring unit, connect with the amplification module, is specifically used for real by comparing amplified first
When voltage signal the first real-time voltage value and preset first threshold voltage value, more amplified second real-time voltage
The the second real-time voltage value and preset second threshold voltage value of signal, and work as and compare to obtain the first real-time voltage value
It is issued when greater than the first threshold voltage value on instruction display panel there are the first alarm signal of excess pressure, when comparing to obtain
The second real-time voltage value issues the second police on indicating circuit plate there are excess pressure when being greater than the second threshold voltage value
Show signal；
The first threshold pressure value is corresponding with first threshold voltage value, the second threshold pressure value with it is described
Second threshold voltage value is corresponding.
When implementation, the display panel to be measured is carried on one and is provided on the microscope carrier of vacuum absorption holes, the film piezo-electric
Sensor is set on the pressing idler wheel, and the amplification module and the excess pressure monitoring unit are all set on the microscope carrier
The first specific region, first specific region there is no vacuum absorption holes can't by it is described pressing idler wheel travel path
Covering.
When implementation, the display panel to be measured is carried on one and is provided on the microscope carrier of vacuum absorption holes, the amplification module
It is all set to the first specific region on the microscope carrier with the excess pressure monitoring unit, the film piezo-electric sensor is set to
The second specific region on the microscope carrier；
Vacuum absorption holes are not present on first specific region and first specific region will not be by the roller stitcher
The travel path of wheel covers；
Second specific region includes board area, the institute for corresponding to the circuit board position on the microscope carrier
It states predetermined corresponding to the display panel areas of the display panel position to be measured and the display surface area peripheral edge on microscope carrier
Neighboring area in range；
Also vacuum absorption holes are not present on second specific region.
When implementation, the amplification module includes operational amplifier, first resistor, second resistance and 3rd resistor；
The normal phase input end of the operational amplifier is connect with the voltage signal output end of the film piezo-electric sensor；
The inverting input terminal of the operational amplifier is connected by the output end of the 3rd resistor and the operational amplifier
It connects；
The inverting input terminal of the operational amplifier is also grounded by the second resistance, the positive of the operational amplifier
Input terminal is also grounded by the first resistor；
The voltage signal output end of the film piezo-electric sensor exports the first real-time voltage signal and/or the second real-time electricity
Press signal；
The output end of the operational amplifier exports amplified first real-time voltage signal and/or amplified described the
Two real-time voltage signals.
When implementation, the amplification module further includes the first filter capacitor, the second filter capacitor and third filter capacitor；
First filter capacitor is in parallel with second filter capacitor；
First filter capacitor parallel with one another and second filter capacitor are being set to the operational amplifier just
Between phase input terminal and ground terminal；
The third filter capacitor is set between the output end and ground terminal of the operational amplifier.
The present invention also provides a kind of over-voltage force monitoring methods, applied to above-mentioned excess pressure monitoring device, the over-voltage
Force monitoring methods include:
Pressure detecting step: during polarizer sheet sticking, described in pressure sensing cell real-time detection pressing idler wheel and to
Survey the real-time pressure signal between display module；
Excess pressure monitoring step: the real-time pressure value of the excess pressure monitoring unit real-time pressure signal with set in advance
Fixed threshold pressure value, and instruction display panel is issued when comparing to obtain the real-time pressure value greater than the threshold pressure value
On there are the alarm signals of excess pressure
When implementation, the display module to be measured includes display panel to be measured and the display panel side to be measured is arranged in
Circuit board；
The real-time pressure signal includes the first real-time pressure between the pressing idler wheel and the display panel to be measured
Signal, and/or, the second real-time pressure signal between the pressing idler wheel and the circuit board；
The threshold pressure value includes first threshold pressure value and second threshold pressure value；The alarm signal includes first
Alarm signal and/or the second alarm signal；
The excess pressure monitoring step includes:
First real-time pressure value of excess pressure monitoring unit the first real-time pressure signal and preset the
One threshold pressure value, and the second real-time pressure value of the second real-time pressure signal and preset second threshold pressure
Force value；
Hair when pressure monitoring unit relatively obtains the first real-time pressure value greater than the first threshold pressure value is served as
Indicate that there are the first alarm signals of excess pressure on display panel, have served as pressure monitoring unit and have relatively obtained described second in real time out
There are the second alarm signals of excess pressure on sending indicating circuit plate when pressure value is greater than the second threshold pressure value.
The present invention also provides a kind of polaroid attaching devices, described for attaching polaroid in display module to be measured
Polaroid attaching device includes pressing idler wheel, and the polaroid attaching device further includes excess pressure control unit and above-mentioned over-voltage
Power monitoring device；
The excess pressure control unit, the excess pressure monitoring unit for including with the excess pressure monitoring device connect, are used for
The pressing idler wheel is controlled when receiving the alarm signal to stop working.
Compared with prior art, excess pressure monitoring device, method and polaroid attaching device of the present invention can have
Effect avoids display panel breakage and electricity caused by acting on during polaroid is bonded because of the overtravel of pressing idler wheel and excess pressure
Component damage on the plate of road.
Detailed description of the invention
Fig. 1 is the structural block diagram of excess pressure monitoring device described in the embodiment of the present invention；
Fig. 2 is the structural block diagram of excess pressure monitoring device described in another embodiment of the present invention；
Fig. 3 is the structural block diagram of excess pressure monitoring device described in further embodiment of this invention；
Fig. 4 is the position signal for the diaphragm pressure sensor that excess pressure monitoring device includes described in the embodiment of the present invention
Figure；
Fig. 5 is that the position for the diaphragm pressure sensor that excess pressure monitoring device includes described in another embodiment of the present invention shows
It is intended to；
Fig. 6 is the circuit diagram of a specific embodiment of the amplification module that excess pressure monitoring device of the present invention includes；
Fig. 7 is the flow chart of over-voltage force monitoring methods described in the embodiment of the present invention；
Fig. 8 is the structure chart that the present invention implements the polaroid attaching device.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Excess pressure monitoring device described in the embodiment of the present invention, applied to include pressing idler wheel polaroid attaching device,
The polaroid attaching device is for attaching polaroid in display module to be measured, as shown in Figure 1, the excess pressure monitoring device
Include:
Pressure sensing cell 11, for during polarizer sheet sticking, pressing idler wheel described in real-time detection and described to be measured
Real-time pressure signal Fs between display module；And
Excess pressure monitoring unit 12 is connect with the pressure sensing cell 11, is used for the real-time pressure signal Fs
Real-time pressure value and preset threshold pressure value Tfs, and when comparing to obtain the real-time pressure value greater than the threshold value
It is issued when pressure value Tfs and indicates that there are the alarm signal S0 of excess pressure in the display module to be measured.
Excess pressure monitoring device is by using pressure sensing cell 11 in polarizer sheet sticking described in the embodiment of the present invention
Real-time pressure between detection pressing idler wheel and display module to be measured, and exist by the excess pressure monitoring unit 12 in detection
Alarm signal is issued when excess pressure, effectively to avoid improving because excess pressure and overtravel are damaged caused by display module to be measured
Production yield.
In practical operation, when having served as the sending alarm signal of pressure monitoring unit 12, pressing idler wheel will receive control and stop
It only operates, so as to avoid the damage to display module to be measured.
The excess pressure monitoring unit 12 for example may include comparison module (for comparing real-time pressure value and threshold pressure
Value) and alarm modules (for issuing alarm signal when real-time pressure value is greater than threshold pressure value).
Excess pressure monitoring device described in the embodiment of the present invention is it is possible to prevente effectively from LCD (Liquid Crystal
Display, liquid crystal display) production polaroid fitting during because pressing idler wheel overtravel and excess pressure act on caused by
Component in display panel breakage and circuit board damages.
In practical operation, the display module to be measured includes display panel to be measured and is arranged in the display panel to be measured
The circuit board of side；
The circuit board can be PCB (Printed Circuit Board, printed circuit board) plate or flexible circuit board
(FPC:Flexible Printed Circuit Board)；
As shown in Fig. 2, the real-time pressure signal Fs includes between the pressing idler wheel and the display panel to be measured
First real-time pressure signal Fs1, and/or, the second real-time pressure signal Fs2 between the pressing idler wheel and the circuit board；
The threshold pressure value Tfs includes first threshold pressure value Tfs1 and second threshold pressure value Tfs2；The warning
Signal S0 includes the first alarm signal S01 and/or the second alarm signal S02；
The excess pressure monitoring unit 12 is specifically used for the first real-time pressure of the first real-time pressure signal Fs1
Value and preset first threshold pressure value Tfs1, and the second real-time pressure of the second real-time pressure signal Fs2
Value and preset second threshold pressure value Tfs2, and work as and compare to obtain the first real-time pressure value greater than first threshold
It is issued when duty pressure value Tfs1 on instruction display panel there are the first alarm signal S01 of excess pressure, when comparing to obtain described the
Two real-time pressure values issue the second warning on indicating circuit plate there are excess pressure when being greater than the second threshold pressure value Tfs2
Signal S02.
In polaroid attaching device in carrying out joint movement implementation procedure, if the pressing idler wheel for being bonded polaroid
Pressure force it is excessive, then will lead to LCM (LCD Module, liquid crystal display die set) broken screen, and in the pressing of pressing idler wheel
Cheng Zhong, pressing idler wheel can be pressed to because of stroke component on corner region, PCB or the flexible circuit board of panel and
The IC (Integrated Circuit, integrated circuit) in Bonding (binding) region causes liquid crystal display panel damaged and circuit
Component damage on plate, therefore need to press idler wheel and the display to be measured described in real-time detection during polarizer sheet sticking
The second real-time pressure between the first real-time pressure signal Fs1 and/or the pressing idler wheel and the circuit board between panel
Signal Fs2, and threshold pressure value is set separately for the two pressure signals, to be reached in threshold value when the pressure value of pressure signal
Corresponding alarm signal is exported in limited time, to avoid because of excess pressure and the overtravel damage caused by display module to be measured.
In practical operation, the pressure sensor that the pressure sensing cell includes preferably uses diaphragm pressure detector,
If measured using diaphragm pressure sensor real-time pressure signal can to avoid pressure sensor thickness is big or pressure sensing
Circuit devcie hardness height on device causes the problem of display panel or circuit board breakage to be measured so as to cause pressure sensor.
Preferably, as shown in figure 3, the pressure sensing cell 11 includes film piezo-electric sensor 111 and amplification module
112, wherein
The film piezo-electric sensor 111 is for the first real-time pressure signal Fs1 and/or described second described in real-time detection
Real-time pressure signal Fs2, and the first real-time pressure signal Fs1 is converted into the first real-time voltage signal Vs1, by described
Two real-time pressure signal Fs2 are converted to the second real-time voltage signal Vs2, by the first real-time voltage signal Vs1 and/or described
Second real-time voltage signal Vs2 is sent to the amplification module；
The amplification module 112 is connect with the film piezo-electric sensor 111, for amplifying first real-time voltage
Signal Vs1 and/or the second real-time voltage signal Vs2, and by amplified first real-time voltage signal DVs1 and/or amplification
The second real-time voltage signal DVs2 afterwards is sent to the excess pressure monitoring unit；
The excess pressure monitoring unit 12 is connect with the amplification module 112, is specifically used for by comparing amplified the
The first real-time voltage value of one real-time voltage signal DVs1 and preset first threshold voltage value TV1, it is more amplified
The second real-time voltage value of second real-time voltage signal DVs2 and preset second threshold voltage value TV2, and work as and compare
It is issued when being greater than the first threshold voltage value TV1 to the first real-time voltage value and indicates that there are excess pressure on display panel
First alarm signal S01 is issued when comparing to obtain the second real-time voltage value greater than the second threshold voltage value TV2 and is referred to
Show the second alarm signal S02 on circuit board there are excess pressure；
The first threshold pressure value Tfs1 is corresponding with the first threshold voltage value TV1, the second threshold pressure
Value Tfs2 is corresponding with the second threshold voltage value TV2.
Pressure sensing cell in excess pressure monitoring device described in the embodiment of the present invention include film piezo-electric sensor and
Amplification module, measured using film piezo-electric sensor real-time pressure signal can to avoid pressure sensor thickness is big or pressure
Circuit devcie hardness height on sensor causes the problem of display panel or circuit board breakage to be measured so as to cause pressure sensor,
And the precision that the voltage signal for amplifying piezoelectric transducer output using amplification module can make excess pressure monitor is higher.
In practical operation, the display panel to be measured is carried on one and is provided on the microscope carrier of vacuum absorption holes, described thin
Membrane pressure electric transducer can be set on the pressing idler wheel, also can be set on microscope carrier, and amplification module and excess pressure detect
Unit needs to be set to will not be pressed through the region that vacuum absorption holes are not arranged, diaphragm pressure by roller stitcher wheel on the microscope carrier
The setting position of the setting position, amplification module and excess pressure detection unit of sensor and specific structure will be situated between in detail below
It continues.
The position selection of film piezo-electric sensor needs to be distinguished according to application scenarios, which can be with
It is set on pressing idler wheel or is set at microscope carrier.
Specifically, the display panel to be measured is carried on one and is provided on the microscope carrier of vacuum absorption holes, the film piezo-electric
Sensor is set on pressing idler wheel, and the amplification module and the excess pressure monitoring unit are all set to the on the microscope carrier
One specific region；
There is no vacuum absorption holes to be covered by the travel path of the pressing idler wheel 43 for first specific region.
In practical operation, display panel to be measured is carried on microscope carrier, and film piezo-electric sensor is set on pressing idler wheel,
With pressing idler wheel rolling then film piezo-electric sensor can with real-time detection display panel to be measured currently by pressing with pressing
Pressure between idler wheel, and also can detecte the circuit board when pressing idler wheel and rolling across circuit board and press the pressure between idler wheel
Power；And amplification module and excess pressure monitoring unit are due to there is certain thickness and hardness therefore to need to be arranged will not be by roller stitcher
The region rolled across is taken turns, due to being provided with vacuum absorption holes on microscope carrier, so amplification module and excess pressure monitoring unit need to be arranged
The region of vacuum absorption holes is not provided on the microscope carrier.
In the preferred case, when the film piezo-electric sensor is set on pressing idler wheel, the film piezo-electric sensing
The entire lateral surface of device Optimal packet confining pressure conjunction idler wheel.Only when pressing idler wheel lateral surface on be all covered with film piezo-electric sensing
When device, it so that the polaroid on entire display panel is bonded process and all be monitored in real-time.
In practical operation, the pressing idler wheel is cylindrical, i.e., under preferable case, the film piezo-electric sensor is whole
Cover the lateral surface of the pressing idler wheel.According to a kind of specific embodiment, as shown in figure 4, the display panel to be measured 41 is held
It is loaded in one to be provided on the microscope carrier 40 of vacuum absorption holes 42, (film piezo-electric sensing is not shown in the film piezo-electric sensor in Fig. 4
Device, optimally, film piezo-electric sensor all cover the side of the pressing idler wheel) it is set on pressing idler wheel 43,
The amplification module (being not shown in Fig. 4) and the excess pressure monitoring unit (being not shown in Fig. 4) are all set to the microscope carrier 40
On the first specific region；
There is no vacuum absorption holes 42 to be covered by the travel path of the pressing idler wheel 43 for first specific region
Lid.
It is the circuit board for being set to the side of display panel 41 to be measured marked as 44 in Fig. 4；The circuit board is for example
It can be PCB and/or FPC；Electronic component is provided on the PCB and/or FPC.
In the specific implementation, position of the film piezo-electric sensor 401 on pressing idler wheel 43 should correspond to described to be measured
Display panel 41 and the circuit board 44.
Preferably, in the embodiment shown in fig. 4, the diaphragm pressure sensor 401 surrounds the entire outer of pressing idler wheel
Side, exactly pressing idler wheel lateral surface not is an only diaphragm pressure sensor in long strip, because if only pressing
If idler wheel outer surface is provided with the diaphragm pressure sensor of a strip, pressing idler wheel always has film when rotating pressing
When pressure sensor is turned over from display panel, at this moment, hard object or roller stitcher wheel on liquid-crystalline glasses overwhelm display panel side
When edge, the broken screen of display panel is still resulted in.Only when being all covered with film piezo-electric sensor on pressing idler wheel,
The polaroid on entire display panel can be made to be bonded process to be all monitored in real-time.
According to another specific embodiment, as shown in figure 5, the display panel to be measured 41 is carried on one and is provided with vacuum
On the microscope carrier 40 of adsorption hole 42, the amplification module (being not shown in Figure 5) and the excess pressure monitoring unit are (in Fig. 5 not
Show) it is all set to the first specific region on the microscope carrier 40, the film piezo-electric sensor 401 is set to the microscope carrier 40
On the second specific region；There is no vacuum absorption holes 42 and first specific region will not be by first specific region
Press the travel path covering of idler wheel 43；
Second specific region includes board area, the institute for corresponding to 44 position of circuit board on the microscope carrier 40
State the display panel areas and the display surface area peripheral edge for corresponding to 40 position of display panel to be measured on microscope carrier 40
Neighboring area in preset range；
Also vacuum absorption holes 42 are not present on second specific region.
It is the circuit board for being set to the side of display panel 41 to be measured marked as 44 in Fig. 5；The circuit board is for example
It can be PCB；Electronic component is provided on the PCB.
In Fig. 5, film piezo-electric sensor 401 is plotted as to the peripheral region being set in display panel periphery preset range
Domain region, but in practical operation, film piezo-electric sensor 401 also be can be set in the display panel areas or circuit
Plate region；Alternatively, the film piezo-electric sensor 401 can be to be multiple, multiple film piezo-electric sensors 401 can be distinguished
It is set to the board area, the display panel areas, the neighboring area in the display panel periphery preset range.
In practical operation, display panel 41 to be measured is carried on microscope carrier 40, and defines that film piezo-electric sensor 401 is set
It is placed in the second specific region on microscope carrier, the second specific region includes corresponding to 44 position of circuit board on the microscope carrier
Board area, correspond on the microscope carrier 41 position of display panel to be measured display panel areas and/or should
Neighboring area in display surface area peripheral edge preset range, so that film piezo-electric sensor 401 is able to detect pressing idler wheel 43
Pressure between display panel 41 to be measured and the pressure being able to detect between pressing idler wheel 43 and circuit board 44, and amplification module
402 and excess pressure monitoring unit 403 due to have certain thickness and hardness therefore need be arranged will not rolled by pressing idler wheel 43
The region crossed, and due to being provided with vacuum absorption holes 42 on microscope carrier 40, so amplification module 402 and excess pressure monitoring unit
403 need that the region for being not provided with vacuum absorption holes 42 on the microscope carrier 40 is arranged in.
Specifically, the amplification module includes operational amplifier, first resistor, second resistance and 3rd resistor；
The normal phase input end of the operational amplifier is connect with the voltage signal output end of the film piezo-electric sensor；
The inverting input terminal of the operational amplifier is connected by the output end of the 3rd resistor and the operational amplifier
It connects；
The inverting input terminal of the operational amplifier is also grounded by the second resistance, the positive of the operational amplifier
Input terminal is also grounded by the first resistor；
The voltage signal output end of the film piezo-electric sensor exports the first real-time voltage signal and/or the second real-time electricity
Press signal；
The output end of the operational amplifier exports amplified first real-time voltage signal and/or amplified described the
Two real-time voltage signals.
Specifically, the amplification module further includes the first filter capacitor, the second filter capacitor and third filter capacitor；
First filter capacitor is in parallel with second filter capacitor；
First filter capacitor parallel with one another and second filter capacitor are being set to the operational amplifier just
Between phase input terminal and ground terminal；
The third filter capacitor is set between the output end and ground terminal of the operational amplifier.
As shown in fig. 6, the amplification module includes operational amplifier OP, first resistor R1, second resistance R2,3rd resistor
R3, the first filter capacitor C1, the second filter capacitor C2 and third filter capacitor C3；
The voltage signal output end of the normal phase input end of the operational amplifier OP and the film piezo-electric sensor 401 connects
It connects；
The inverting input terminal of the operational amplifier OP is defeated by the 3rd resistor R3 and operational amplifier OP's
Outlet connection；
The inverting input terminal of the operational amplifier OP is also connect by the second resistance R2 with ground terminal GND, the fortune
The normal phase input end for calculating amplifier OP is also connect by the first resistor R1 with ground terminal GND；
The voltage signal output end of the film piezo-electric sensor 401 exports the first real-time voltage signal and/or second in fact
When voltage signal；
The output end of the operational amplifier OP exports amplified first real-time voltage signal and/or amplified described
Second real-time voltage signal；
The amplification module further includes the first filter capacitor C1, the second filter capacitor C2 and third filter capacitor C3；
The first filter capacitor C1 is in parallel with the second filter capacitor C2；
The first filter capacitor C1 parallel with one another and the second filter capacitor C2 are set to the operational amplifier
Between the normal phase input end and ground terminal GND of OP；
The third filter capacitor C3 is set between the output end and ground terminal GND of the operational amplifier OP.
In practical operation, when press roller pressing arrive film piezo-electric sensor 401 after, film piezo-electric sensor 401 need
The pressure signal received is converted to voltage signal, and through overcoupling and filtering, which is transmitted to operation
The output end of amplifier OP, operational amplifier OP are connect with excess pressure monitoring unit, and excess pressure detection unit passes through operation amplifier
The size of the output voltage values of device OP decides whether to export corresponding alarm signal.
In the embodiment of amplification module shown in Fig. 6, the resistance value of R2 can be 100 Europe, and the resistance value of R3 can be 1
Kilo-ohm, the resistance value of R1 can be 1 kilo-ohm, and the capacitance of C1 can be 0.1 microfarad, and the capacitance of C2 can be 1 microfarad, C3's
Capacitance can be 1 microfarad, but the value of each resistance and each capacitor is not limited to value exemplified above, can basis
Actual conditions are chosen.
In amplification module work as described in Figure 6, the voltage signal Ui that film piezo-electric sensor 401 exports is put for operation
The input voltage of big device OP, the positive input voltage of operational amplifier OP, the positive input current of operational amplifier OP are respectively U
+, i+, the reverse inter-input-ing voltage of operational amplifier OP and the anti-phase input electric current of operational amplifier OP are respectively U-, i-, and operation is put
The output voltage of big device OP is denoted as Uo；Due to i+=i-, U+=U-=Ui, therefore,
Uo=R3((R1-R2)/R1R2)U++U-；Wherein, R1、R2、R3The respectively resistance value, second resistance of first resistor R1
Resistance value, the resistance value of 3rd resistor R3 of R2；
By the way that R is arranged1、R2、R3The output voltage of film piezo-electric sensor can be amplified to operational amplifier OP's at double
Output end can determine the size of each resistance according to the size of corresponding threshold voltage value；
If R1=R3, R1=n × R2, n is integer, available:
UO=n × Ui。
In actual production, the attaching pressure between adjustable pressing idler wheel and display module to be measured, it is broken to be up to LCM
Damage minimum the attach pressure value damaged with the component on PCB obtains after the threshold value as threshold value according to film piezo-electric sensor
Piezoelectric modulus and amplification module amplification coefficient and obtain corresponding threshold voltage value.
Excess pressure monitoring device described in the embodiment of the present invention is used and is made of film piezo-electric sensor and operational amplifier
Signal acquiring system as input terminal, signal source is in polaroid attaching device, the polaroid attaching device course of work
There are pressing movement, corresponding pressure force is acted on film piezo-electric sensor, turns pressure signal after operational amplifier
Electric signal transmission is changed to device alarm system, by the way that alarm voltage starting upper limit threshold is arranged, which determines polaroid
Whether the work of attaching device, the voltage value of the corresponding voltage signal of pressure signal between idler wheel and display module to be measured is pressed
Warning system is started to work when greater than the threshold value, and polaroid attaching device shuts down, to effectively avoid excess pressure and space
Journey breakage caused by liquid crystal display die set improves production yield.
As shown in fig. 7, over-voltage force monitoring methods described in the embodiment of the present invention, monitor dress applied to above-mentioned excess pressure
It sets, the over-voltage force monitoring methods include:
Pressure detecting step S1: during polarizer sheet sticking, described in pressure sensing cell real-time detection pressing idler wheel and
Real-time pressure signal between display module to be measured；
Excess pressure monitoring step S2: the real-time pressure value of the excess pressure monitoring unit real-time pressure signal and in advance
The threshold pressure value of setting, and issue when comparing to obtain the real-time pressure value greater than the threshold pressure value instruction it is described to
There are the alarm signals of excess pressure in survey display module.
Over-voltage force monitoring methods described in the embodiment of the present invention are examined by using pressure sensing cell in polarizer sheet sticking
The real-time pressure between pressing idler wheel and display module to be measured is surveyed, and there are over-voltages in detection by the excess pressure monitoring unit
Alarm signal is issued when power, effectively to avoid improving production yield because excess pressure is damaged caused by display module to be measured.
Specifically, the display module to be measured includes display panel to be measured and the display panel side to be measured is arranged in
Circuit board；
The real-time pressure signal includes the first real-time pressure between the pressing idler wheel and the display panel to be measured
Signal, and/or, the second real-time pressure signal between the pressing idler wheel and the circuit board；
The threshold pressure value includes first threshold pressure value and second threshold pressure value；The alarm signal includes first
Alarm signal and/or the second alarm signal；
The excess pressure monitoring step includes:
First real-time pressure value of excess pressure monitoring unit the first real-time pressure signal and preset the
One threshold pressure value, and the second real-time pressure value of the second real-time pressure signal and preset second threshold pressure
Force value；
Hair when pressure monitoring unit relatively obtains the first real-time pressure value greater than the first threshold pressure value is served as
Indicate that there are the first alarm signals of excess pressure on display panel, have served as pressure monitoring unit and have relatively obtained described second in real time out
There are the second alarm signals of excess pressure on sending indicating circuit plate when pressure value is greater than the second threshold pressure value.
Polaroid attaching device described in the embodiment of the present invention, it is described for attaching polaroid in display module to be measured
Polaroid attaching device includes pressing idler wheel, which is characterized in that the polaroid attaching device further includes excess pressure control unit
With above-mentioned excess pressure monitoring device；
The excess pressure control unit, the excess pressure monitoring unit for including with the excess pressure monitoring device connect, are used for
The pressing idler wheel is controlled when receiving the alarm signal to stop working.
Polaroid attaching device described in the embodiment of the present invention at work, served as pressure control unit receive from
It controls roller stitcher wheel when the alarm signal of pressure monitoring device to stop working, so as to avoid the damage to display module to be measured
Wound.
In practical operation, the excess pressure control unit may include alarm and equipment exigency stop system；
As shown in figure 8, increasing triggering control switch S1 and alarm and equipment exigency stop system 80 on the basis of Fig. 6；
The output voltage of operational amplifier OP is denoted as Uo, as output voltage UoWhen greater than scheduled voltage, triggering control
Switch S1 closure, so that alarm signal is transmitted to alarm and equipment exigency stop system 80, the alarm and equipment exigency stop system 80
Control pressing idler wheel stops working after receiving alarm signal.
Specifically, when the display module to be measured includes display panel to be measured and is arranged in the display panel side to be measured
Circuit board, the display panel to be measured is carried on one and is provided on the microscope carrier of vacuum absorption holes, when the pressure sensing cell
Including film piezo-electric sensor and when amplification module, the film piezo-electric sensor is set on the pressing idler wheel, described to put
Big module and the excess pressure monitoring unit are all set to the first specific region on the microscope carrier, and first specific region is not
There are vacuum absorption holes can't be by the travel path covering of the pressing idler wheel.
Preferably, the film piezo-electric sensor all covers the side of the pressing idler wheel.
Specifically, when the display module to be measured includes display panel to be measured and is arranged in the display panel side to be measured
Circuit board, the display panel to be measured is carried on one and is provided on the microscope carrier of vacuum absorption holes, when the pressure sensing cell
Including film piezo-electric sensor and when amplification module, the amplification module and the excess pressure monitoring unit are all set to the load
The first specific region on platform, the film piezo-electric sensor are set to the second specific region on the microscope carrier；
Vacuum absorption holes are not present on first specific region and first specific region will not be by the roller stitcher
The travel path of wheel covers；
Second specific region includes board area, the institute for corresponding to the circuit board position on the microscope carrier
State the display panel areas and the display surface area peripheral edge preset range for corresponding to the display panel position on microscope carrier
Interior neighboring area；
Also vacuum absorption holes are not present on second specific region.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of excess pressure monitoring device, applied to the polaroid attaching device for including pressing idler wheel, the polarizer sheet sticking is set
It is ready for use on and attaches polaroid in display module to be measured, which is characterized in that the excess pressure monitoring device includes:
Pressure sensing cell, for pressing idler wheel and the display mould to be measured described in real-time detection during polarizer sheet sticking
Real-time pressure signal between group；And
Excess pressure monitoring unit, real-time pressure value and preset threshold pressure for the real-time pressure signal
Value, and issued when comparing to obtain the real-time pressure value greater than the threshold pressure value and indicate existed in display module to be measured
The alarm signal of pressure；
The display module to be measured includes display panel to be measured and the circuit board that the display panel side to be measured is arranged in；
The real-time pressure signal includes the first real-time pressure signal between the pressing idler wheel and the display panel to be measured
The second real-time pressure signal between the pressing idler wheel and the circuit board；
The threshold pressure value includes first threshold pressure value and second threshold pressure value；The alarm signal includes the first warning
Signal and the second alarm signal；
The excess pressure monitoring unit be specifically used for the first real-time pressure signal the first real-time pressure value and in advance
The first threshold pressure value of setting, and the second real-time pressure value of the second real-time pressure signal and preset the
Two threshold pressure values, and issue instruction when comparing to obtain the first real-time pressure value greater than the first threshold pressure value and show
Show the first alarm signal on panel there are excess pressure, when comparing to obtain the second real-time pressure value greater than the second threshold
There are the second alarm signals of excess pressure on sending indicating circuit plate when pressure value；
The pressure sensing cell includes film piezo-electric sensor and amplification module, wherein
The film piezo-electric sensor is used for the first real-time pressure signal and the second real-time pressure signal described in real-time detection,
And the first real-time pressure signal is converted into the first real-time voltage signal, the second real-time pressure signal is converted to
The first real-time voltage signal and the second real-time voltage signal are sent to the amplification mould by two real-time voltage signals
Block；
The amplification module is connect with the film piezo-electric sensor, for amplifying the first real-time voltage signal and described
Second real-time voltage signal, and amplified first real-time voltage signal and the amplified second real-time voltage signal are passed
It send to the excess pressure monitoring unit；
The excess pressure monitoring unit, connect with the amplification module, is specifically used for electric in real time by comparing amplified first
Press the first real-time voltage value and preset first threshold voltage value of signal, more amplified second real-time voltage signal
The second real-time voltage value and preset second threshold voltage value, and be greater than when compare to obtain the first real-time voltage value
It is issued when the first threshold voltage value and indicates that there are the first alarm signals of excess pressure on display panel, it is described when comparing to obtain
Second real-time voltage value issues the second warning letter on indicating circuit plate there are excess pressure when being greater than the second threshold voltage value
Number；
The first threshold pressure value is corresponding with first threshold voltage value, the second threshold pressure value and described second
Threshold voltage value is corresponding.
2. excess pressure monitoring device as described in claim 1, which is characterized in that the display panel to be measured is carried on a setting
Have on the microscope carrier of vacuum absorption holes, the film piezo-electric sensor is set on the pressing idler wheel, the amplification module and institute
The first specific region that excess pressure monitoring unit is all set on the microscope carrier is stated, there is no vacuum suctions for first specific region
Attached hole can't be covered by the travel path of the pressing idler wheel.
3. excess pressure monitoring device as claimed in claim 2, which is characterized in that the film piezo-electric sensor all covers institute
State the lateral surface of pressing idler wheel.
4. excess pressure monitoring device as described in claim 1, which is characterized in that the display panel to be measured is carried on a setting
Have on the microscope carrier of vacuum absorption holes, the amplification module and the excess pressure monitoring unit are all set to first on the microscope carrier
Specific region, the film piezo-electric sensor are set to the second specific region on the microscope carrier；
Vacuum absorption holes are not present on first specific region and first specific region will not be by the pressing idler wheel
Travel path covering；
Second specific region includes the board area for corresponding to the circuit board position on the microscope carrier, the load
Correspond to the display panel areas and the display surface area peripheral edge preset range of the display panel position to be measured on platform
Interior neighboring area；
Also vacuum absorption holes are not present on second specific region.
5. the excess pressure monitoring device as described in any claim in Claims 1-4, which is characterized in that the amplification mould
Block includes operational amplifier, first resistor, second resistance and 3rd resistor；
The normal phase input end of the operational amplifier is connect with the voltage signal output end of the film piezo-electric sensor；
The inverting input terminal of the operational amplifier is connect by the 3rd resistor with the output end of the operational amplifier；
The inverting input terminal of the operational amplifier is also grounded by the second resistance, the positive input of the operational amplifier
End is also grounded by the first resistor；
The voltage signal output end of the film piezo-electric sensor exports the first real-time voltage signal and the second real-time voltage signal；
The output end of the operational amplifier exports amplified first real-time voltage signal and amplified described second in real time
Voltage signal.
6. excess pressure monitoring device as claimed in claim 5, which is characterized in that the amplification module further includes the first filtered electrical
Appearance, the second filter capacitor and third filter capacitor；
First filter capacitor is in parallel with second filter capacitor；
The positive that first filter capacitor parallel with one another and second filter capacitor are set to the operational amplifier is defeated
Enter between end and ground terminal；
The third filter capacitor is set between the output end and ground terminal of the operational amplifier.
7. a kind of over-voltage force monitoring methods, which is characterized in that applied to as described in any claim in claim 1 to 6
Excess pressure monitoring device, the over-voltage force monitoring methods include:
Pressure detecting step: during polarizer sheet sticking, pressing idler wheel described in pressure sensing cell real-time detection and to be measured aobvious
Show the real-time pressure signal between mould group；
Excess pressure monitoring step: the real-time pressure value of the excess pressure monitoring unit real-time pressure signal with it is preset
Threshold pressure value, and issued when comparing to obtain the real-time pressure value greater than the threshold pressure value and indicate the display to be measured
There are the alarm signals of excess pressure in mould group；
The display module to be measured includes display panel to be measured and the circuit board that the display panel side to be measured is arranged in；
The real-time pressure signal includes the first real-time pressure signal between the pressing idler wheel and the display panel to be measured
The second real-time pressure signal between the pressing idler wheel and the circuit board；
The threshold pressure value includes first threshold pressure value and second threshold pressure value；The alarm signal includes the first warning
Signal and the second alarm signal；
The excess pressure monitoring step includes:
First real-time pressure value of excess pressure monitoring unit the first real-time pressure signal and preset first threshold
Duty pressure value, and the second real-time pressure value of the second real-time pressure signal and preset second threshold pressure
Value；
It has served as issuing when pressure monitoring unit relatively obtains the first real-time pressure value greater than the first threshold pressure value and refer to
Show the first alarm signal on display panel there are excess pressure, has served as pressure monitoring unit and relatively obtained second real-time pressure
There are the second alarm signals of excess pressure on sending indicating circuit plate when value is greater than the second threshold pressure value.
8. a kind of polaroid attaching device, for attaching polaroid, the polaroid attaching device packet in display module to be measured
Include pressing idler wheel, which is characterized in that the polaroid attaching device further includes excess pressure control unit and such as claim 1 to 6
Excess pressure monitoring device described in middle any claim；
The excess pressure control unit, the excess pressure monitoring unit for including with the excess pressure monitoring device are connect, and are connect for working as
The pressing idler wheel is controlled when receiving the alarm signal to stop working.
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| CN201610663469.2A CN106197769B (en) | 2016-08-12 | 2016-08-12 | Excess pressure monitoring device, method and polaroid attaching device |
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|---|---|---|---|
| CN201610663469.2A CN106197769B (en) | 2016-08-12 | 2016-08-12 | Excess pressure monitoring device, method and polaroid attaching device |
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| CN106197769B true CN106197769B (en) | 2019-08-09 |
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| CN107860499A (en) * | 2017-11-08 | 2018-03-30 | 武汉华星光电半导体显示技术有限公司 | Testing device of display panel and display panel method of testing |
| CN108534927A (en) * | 2018-05-09 | 2018-09-14 | 华中科技大学 | A kind of building structure, construction temporary structure and construction equipment integral firmness monitoring method |
| CN113023021A (en) * | 2021-04-30 | 2021-06-25 | 霸州市云谷电子科技有限公司 | Film tearing equipment and film tearing control method |
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