CN110673404B - Liquid crystal dripping device and liquid crystal dripping method - Google Patents
Liquid crystal dripping device and liquid crystal dripping method Download PDFInfo
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- CN110673404B CN110673404B CN201910977791.6A CN201910977791A CN110673404B CN 110673404 B CN110673404 B CN 110673404B CN 201910977791 A CN201910977791 A CN 201910977791A CN 110673404 B CN110673404 B CN 110673404B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 158
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000012528 membrane Substances 0.000 claims abstract description 59
- 230000005540 biological transmission Effects 0.000 claims abstract description 22
- 238000005086 pumping Methods 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 10
- 239000010408 film Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 4
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- 238000006073 displacement reaction Methods 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010024796 Logorrhoea Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
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- 239000010409 thin film Substances 0.000 description 1
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- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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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
-
- 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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- Crystallography & Structural Chemistry (AREA)
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- Optics & Photonics (AREA)
Abstract
The invention discloses a liquid crystal instillation device and a liquid crystal instillation method. The liquid crystal dripping device includes: a liquid crystal bottle for containing liquid crystal; a filter communicated with the liquid crystal bottle and provided with a filter membrane; the pump is communicated with the filter and is used for pumping the liquid crystal to the filter, and the liquid crystal drips out of a nozzle of the pump after passing through the filter membrane; and the pressure sensor is positioned on the liquid crystal transmission channel from the filter to the nozzle and used for detecting the pressure value at the position so as to allow the pump to be controlled to stop running when the pressure value is greater than a preset pressure threshold value. Therefore, the liquid crystal display device can be beneficial to timely and effectively monitoring the filter membrane blockage of the filter, and the pump is controlled to stop running when the filter membrane blockage is monitored, so that the phenomena of filter membrane damage and quality abnormity caused by the fact that foreign matters in liquid crystals enter the liquid crystal panel are avoided.
Description
Technical Field
The invention relates to the technical field of Liquid Crystal Display (LCD), in particular to a Liquid Crystal instillation device and a Liquid Crystal instillation method.
Background
With the development of display technology, display devices such as LCDs have advantages of high image quality, power saving, and wide application range, and are widely used in various consumer electronics products such as mobile phones, televisions, digital cameras, notebook computers, and desktop computers, and become the mainstream of display devices.
Most of the existing liquid crystal displays in the market are Backlight liquid crystal displays (lcds), which include a liquid crystal panel and a Backlight Module (Backlight Module). The Liquid Crystal panel generally includes a Color Filter (CF) Substrate, a Thin film transistor Array (TFT Array Substrate), and a Liquid Crystal Layer (Liquid Crystal Layer) disposed between the two substrates, and the Liquid Crystal panel operates by applying a driving voltage to the two substrates and controlling an orientation of Liquid crystals in the Liquid Crystal Layer by an electric field generated between the two substrates, so as to refract light of the backlight module to generate a picture.
At present, the liquid crystal panel generally adopts an One Drop Filling (ODF) process, that is, liquid crystal is dropped onto the color film substrate or the array substrate, and then the color film substrate and the array substrate are combined into a pair. The current general principle of liquid crystal dropping is: negative pressure is formed in the filter and the corresponding pipeline by using a Pump (Pump), so that liquid crystal in the liquid crystal bottle is sucked out, and the liquid crystal is filtered by a filter membrane in the filter and finally dripped out from a nozzle (nozzle) of the Pump.
Because of the filter shell is opaque, whether operating personnel is difficult for looking over the damage that whether its inside filter membrane takes place to lead to because of blockking up to current equipment also can't monitor the very little damage of area, consequently when the filter membrane appears blockking up, the pump continues to bleed and can lead to the filter membrane damaged, makes in the liquid crystal foreign matter gets into the liquid crystal display panel, thereby causes the garrulous bright spot of bulk and the quality anomaly such as foreign matter height to send out.
Disclosure of Invention
In view of the above, the present invention provides a liquid crystal instillation device and a liquid crystal instillation method to solve the problem of abnormal quality caused by the entry of foreign matters into a liquid crystal panel due to the damage of a filter membrane caused by the failure of timely and effective monitoring of the filter membrane blockage in the prior art.
The invention provides a liquid crystal instillation device, which comprises:
the liquid crystal bottle is used for containing liquid crystal;
the filter is communicated with the liquid crystal bottle and is provided with a filter membrane;
the pump is communicated with the filter and is provided with a nozzle, and the pump is used for pumping the liquid crystal in the liquid crystal bottle to the filter, passing through the filter membrane and then dripping out of the nozzle;
and the pressure sensor is positioned on a liquid crystal transmission channel from the filter to the nozzle and is used for detecting the pressure value at which the pressure sensor is positioned so as to allow the pump to be controlled to stop running when the pressure value is greater than a preset pressure threshold value.
In one embodiment of the present invention, the filter membrane covers an inner wall of the filter, and the pressure sensor is located in a space surrounded by the filter membrane.
In one embodiment of the present invention, the pump includes a housing, the housing encloses a sealed cavity, the nozzle and the filter are respectively communicated with the sealed cavity, and the pressure sensor is located in the sealed cavity.
In one embodiment of the present invention, the pressure sensor is located in the nozzle.
In one embodiment of the present invention, the pump is in communication with the filter through a conduit, and the pressure sensor is located within the conduit.
In an embodiment of the invention, the liquid crystal instillation device further includes an alarm, the alarm is connected to the pressure sensor, and the alarm is configured to alarm when the pressure value is greater than a preset pressure threshold value.
In an embodiment of the invention, the liquid crystal instillation device further includes a control processor and a motor connected to each other, the motor is in transmission connection with the piston of the pump, and the control processor is configured to control the motor to stop transmitting the piston of the pump when the pressure value is greater than a preset pressure threshold value, so as to control the pump to stop operating.
The invention provides a liquid crystal instillation method, which comprises the following steps:
providing a liquid crystal instillation device which comprises a liquid crystal bottle, a filter, a pump and a pressure sensor, wherein the filter is communicated with the liquid crystal bottle and is provided with a filter membrane, the pump is communicated with the filter and is provided with a nozzle, and the pressure sensor is positioned on a liquid crystal transmission channel from the filter to the nozzle;
the pump pumps the liquid crystal in the liquid crystal bottle to the filter, and the liquid crystal drops out of the nozzle after passing through the filter membrane, wherein the pressure sensor detects the pressure value at the position where the pressure sensor is located;
and stopping the operation of the pump when the pressure value is greater than a preset pressure threshold value.
In one embodiment of the present invention, the liquid crystal instillation device further comprises an alarm connected to the pressure sensor,
when the pressure value is greater than a preset pressure threshold value, the liquid crystal instillation method further comprises the following steps:
the alarm gives an alarm.
In one embodiment of the present invention, the liquid crystal instillation device further comprises a control processor and a motor connected with each other, the motor is in transmission connection with the piston of the pump,
when the pressure value is greater than a preset pressure threshold value, the pump stops running, and the method comprises the following steps:
the control processor controls the motor to stop driving the piston of the pump.
According to the liquid crystal instillation device and the liquid crystal instillation method provided by the invention, the pressure sensor is arranged on the liquid crystal transmission channel from the filter to the nozzle and used for detecting the pressure value of the pressure sensor, the pressure value detected by the pressure sensor is larger than the preset pressure threshold value when the filter membrane is not blocked when the filter membrane is blocked, namely when the detected pressure value is larger than the preset pressure threshold value, the filter membrane can be judged to be blocked, and the pump is controlled to stop running, so that the phenomena of filter membrane damage and quality abnormity caused by the fact that foreign matters in liquid crystal enter the liquid crystal panel can be avoided.
Drawings
FIG. 1 is a schematic structural diagram of a liquid crystal dropping device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a liquid crystal dropping device according to another embodiment of the present invention;
fig. 3 is a flow chart illustrating a liquid crystal dropping method according to an embodiment of the invention.
Detailed Description
The technical solutions of the exemplary embodiments provided in the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. The following embodiments and their technical features may be combined with each other without conflict.
Directional phrases used herein, such as, for example, upper, lower, top, bottom, front, rear, left, right, inner, outer, lateral, peripheral, central, horizontal, transverse, vertical, longitudinal, axial, radial, uppermost or lowermost, etc., refer only to the orientation of the figure. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In addition, the same reference numerals are used to identify structural elements having the same or similar characteristics.
Fig. 1 is a schematic structural diagram of a liquid crystal instillation device according to an embodiment of the invention. The liquid crystal instillation device can be used for the ODF process of a liquid crystal panel, and as shown in fig. 1, the liquid crystal instillation device 10 includes a liquid crystal bottle 11, a filter 12, a pump 13 and a pressure sensor 14. Wherein:
the liquid crystal bottle 11 is used for containing liquid crystal 111.
The filter 12 communicates with the liquid crystal bottle 11, thereby allowing the liquid crystal 111 in the liquid crystal bottle 11 to be transferred into the filter 12. The filter 12 is covered with, for example, a filter film (not shown) on the inner wall thereof, and the filter film is mainly used for filtering the liquid crystal 111 from the liquid crystal bottle 11 and allowing the filtered liquid crystal 111 to pass through the filter film into the filter 12.
The pump 13 communicates with the filter 12, thereby allowing the liquid crystal 111 in the filter 12 to be transferred to the pump 13. The pump 13 is provided with a nozzle 131 meeting the requirement of dropping for allowing the liquid crystal 111 transferred to the pump 13 to drop from the opening of the nozzle 131.
The pressure sensor 14 is located on a liquid crystal transfer channel from the filter 12 to the nozzle 131 of the pump 13 for detecting a pressure value at which the pressure sensor 14 is located.
With reference to fig. 1, the pump 13 pumps air to form a negative pressure in the liquid crystal transmission channel from the liquid crystal bottle 11, the filter 12 to the pump 13, the liquid crystal 111 is sucked out from the liquid crystal bottle 11 and transmitted to the filter 12 under the action of the negative pressure, the liquid crystal 111 is filtered by the filter membrane of the filter 12 to remove impurities therein, the filtered liquid crystal 111 is transmitted into the cavity of the pump 13 under the action of the negative pressure, and then the pump 13 pressurizes, so that the liquid crystal 111 in the cavity thereof is dripped out of the nozzle 131.
In this process, once the filter membrane is blocked, the pressure value in the section from the filter 12 to the pump 13 (including the filter 12 and the pump 13) of the liquid crystal transmission channel will become larger due to the pumping of the pump 13, and the pressure value detected by the pressure sensor 14 will be undoubtedly larger than the preset pressure threshold value when the filter membrane is not blocked, where the preset pressure threshold value is the pressure value at the position where the pressure sensor 14 is located when the filter membrane is not blocked. Therefore, when the pressure sensor 14 monitors that the pressure value is greater than the preset pressure threshold value, the embodiment of the present invention can determine that the filter membrane is blocked at the first time, so that whether the housing of the filter 12 is transparent or not is not considered, and the filter membrane of the filter 12 is also effectively monitored in time to be blocked, and at this time, the pump 13 is controlled to stop operating, so that the phenomena that the filter membrane is damaged due to the penetration of impurities through the filter membrane under the negative pressure, and the quality is abnormal due to the entry of foreign matters in the liquid crystal 111 into the liquid crystal panel caused by the damage of the filter membrane can be avoided.
In the section from the filter 12 to the pump 13 (including the filter 12 and the pump 13) of the liquid crystal transmission channel, the embodiment of the invention can arrange the specific position of the pressure sensor 14 according to the actual requirement. The following description is exemplary in connection with specific embodiments.
In one embodiment of the present invention, the substrate is,
referring to fig. 1, the pressure sensor 14 is disposed within the filter 12. The filter membrane is completely covered on the inner wall of the filter 12, the liquid crystal bottle 11 and the filter 12 can be communicated through the first conduit 151, the liquid crystal 111 in the liquid crystal bottle 11 sequentially passes through the first conduit 151 and the upper half part of the filter membrane and then enters a space (which can be regarded as a cavity of the filter 12) enclosed by the filter membrane, and the pressure sensor 14 is located in the space enclosed by the filter membrane.
The pump 13 and the filter 12 can be communicated through the second conduit 152, and the second conduit 152 and the first conduit 151 can have the same material, pipe diameter and other property parameters.
Further, the pump 13 is provided with a housing 132, a piston 133, a control processor 134, a first motor 135, and a lead screw 136, in addition to the aforementioned nozzle 131.
The housing 132 encloses to form a relatively closed cavity, that is, the cavity of the pump 13, the piston 133 is located in the cavity, the nozzle 131 and the second conduit 152 are respectively communicated with the cavity, specifically, one end of the second conduit 152 is communicated with the lower part of the filter 12, the other end of the second conduit 152 penetrates through one side surface of the housing 132 and has a predetermined distance in the vertical direction with the bottom of the housing 132, and the nozzle 131 is disposed at the bottom of the housing 132.
One end of the screw rod 136 is connected with the first motor 135, the other end of the screw rod 136 is in transmission connection with the upper end of the piston 133, and the piston 133 is arranged in the cavity of the pump 13.
As shown in fig. 1, the control processor 134 is communicatively connected, for example, wirelessly connected, to the pressure sensor 14, and is configured to receive the pressure value detected by the pressure sensor 14 and determine whether the pressure value is greater than a preset pressure threshold.
When the pressure value is greater than or equal to the preset pressure threshold, the control processor 134 controls the first motor 135 to stop operating, that is, controls the pump 13 to stop operating.
Further, the liquid crystal instillation device 10 may be provided with an alarm (not shown) connected to the pressure sensor 14, wherein the alarm is used for giving an alarm when the pressure value is greater than the preset pressure threshold value, so as to prompt an operator. Or, the alarm is connected to the control processor 134, and the control processor 134 automatically controls the alarm to alarm when determining that the pressure value is greater than or equal to the preset pressure threshold value, so as to prompt an operator.
The warning indicator can give an alarm in a single prompting mode or a mode combining multiple modes such as light, sound and the like.
When the pressure value is smaller than the preset pressure threshold value, the control processor 134 controls the first motor 135 to operate and drive the screw rod 136 to rotate and contract in length, and then drives the piston 133 to move up and down, so that the piston 133 moves up and down along the inner wall of the housing 132.
When the piston 133 is driven to move upwards, the pump 13 is in the working process of pumping the liquid crystal 111, so that negative pressure is formed in a liquid crystal transmission channel from the liquid crystal bottle 11, the filter 12 to the pump 13, the liquid crystal 111 is sucked out from the liquid crystal bottle 11 and is transmitted to the filter 12 under the action of the negative pressure, and the liquid crystal 111 in the filter 12 is transmitted to the cavity of the pump 13 sequentially through the lower half part of the filter membrane and the second conduit 152, wherein the filter membrane filters the liquid crystal 111.
When the piston 133 is driven to move downward, the piston 133 compresses the chamber of the pump 13, thereby dropping the liquid crystal 111 in the chamber from the nozzle 131.
In order to precisely control the air pressure in the chamber to control the accuracy of the liquid crystal dropping, the pump 13 may be further provided with a second motor 137 and a slider 138. The other end of the screw 136 is connected with a slider 138, the slider 138 is in transmission connection with the upper end of the piston 133, and the second motor 137 is combined with the slider 138. The first motor 135 operates and drives the screw rod 136 to rotate and contract in length, the screw rod 13 drives the slider 138, and then the slider 138 drives the piston 133 to move up and down, so that the piston 133 moves up and down along the inner wall of the housing 132. When the pressure value is greater than or equal to the preset pressure threshold, the control processor 134 controls the second motor 137 to stop operating. When the pressure value is greater than or equal to the preset pressure threshold value, the control processor 134 controls the second motor 137 to drive the slider 138 to rotate and thereby drive the piston 133 to move up and down along the inner wall of the housing 132.
Compared with the first motor 135, the second motor 13 drives the piston 133 to move up and down with smaller displacement and higher precision, that is, the first motor 135 drives the piston 133 to move up and down with larger displacement, and then the second motor 13 drives the piston 133 to perform precise control of displacement, so that the pressure in the cavity is precisely controlled, and the precision of liquid crystal dripping is controlled.
In a further embodiment of the method according to the invention,
referring to fig. 2, the pressure sensor 14 is disposed in the cavity of the pump 13. Wherein like structural elements are numbered the same herein.
Once the filter membrane is clogged, the air pressure in the cavity of the pump 13 will become high, the load of the pump 13 will increase, and the pressure value detected by the pressure sensor 14 will certainly be greater than the preset pressure threshold value when the filter membrane is not clogged. Therefore, when the pressure sensor 14 monitors that the pressure value is greater than the preset pressure threshold value, the control processor 134 may determine that the filter membrane is blocked at the first time, so that whether the housing of the filter 12 is transparent or not is not considered, and the filter membrane of the filter 12 is also effectively monitored in time and automatically, and the automatic control pump 13 stops operating, so that the phenomena that impurities penetrate through the filter membrane under the negative pressure to cause damage of the filter membrane and that foreign matters in the liquid crystal 111 enter the liquid crystal panel to cause quality abnormality due to damage of the filter membrane can be avoided.
It should be understood that the position of the pressure sensor 14 in the liquid crystal transmission path from the filter 12 to the pump 13 (including the filter 12 and the pump 13) is not limited to the foregoing, and may be disposed in the nozzle 131 or the second conduit 152, for example. Of course, the shape, type, etc. of the pressure sensor 14 may vary from location to location.
Fig. 3 is a flow chart illustrating a liquid crystal dropping method according to an embodiment of the invention. As shown in fig. 3, the liquid crystal dropping method includes the following steps S31 to S33.
S31: the utility model provides a liquid crystal instillation device, including liquid crystal bottle, filter, pump and pressure sensor, the filter just is equipped with the filter membrane with liquid crystal bottle intercommunication, the pump just is equipped with the mouthpiece with the filter intercommunication, pressure sensor is located the liquid crystal transmission channel of filter to mouthpiece.
S32: the pump pumps the liquid crystal in the liquid crystal bottle to the filter, and the liquid crystal drops out from the nozzle after passing through the filter membrane, wherein the pressure sensor detects the pressure value at the position where the pressure sensor is located.
S33: and stopping the operation of the pump when the pressure value is greater than a preset pressure threshold value.
The structural design of the liquid crystal instillation device can refer to the liquid crystal instillation device 10 of any one of the embodiments. For example, in the case of the liquid crystal instillation device 10 provided with an alarm, when the pressure value is greater than a preset pressure threshold value, the alarm gives an alarm. For another example, for the liquid crystal instillation device 10 provided with the control processor 134 and the motors (for example, including the first motor 135 and the second motor 137), when the pressure value is greater than the preset pressure threshold value, the control processor 134 controls the motors to stop allowing, so as to stop the piston of the transmission pump.
Based on this, in the process of liquid crystal instillation, in case the filter membrane appears blockking up, because the pump continues to bleed, then the pressure value in this section liquid crystal transmission passageway of filter to pump (including filter and pump) then can grow, the pressure value that pressure sensor detected then can be greater than the preset pressure threshold value when the filter membrane does not send the jam undoubtedly, this preset pressure threshold value is the pressure value that the pressure sensor position when the filter membrane does not send the jam goes out. Therefore, when the pressure sensor monitors that the pressure value is greater than the preset pressure threshold value, the filter membrane can be judged to be blocked in the first time, whether the shell of the filter is transparent or not is not needed to be considered, the filter membrane of the filter can be timely and effectively monitored to be blocked, the control pump stops running at the moment, and therefore the phenomenon that impurities penetrate through the filter membrane under the negative pressure effect to cause damage of the filter membrane and cause quality abnormity due to the fact that foreign matters in liquid crystals caused by damage of the filter membrane enter the liquid crystal panel is avoided.
Although the invention has been shown and described with respect to one or more implementations, equivalent alterations and modifications will occur to others skilled in the art based upon a reading and understanding of this specification and the annexed drawings. The present invention includes all such modifications and variations, and is limited only by the scope of the following claims. In particular regard to the various functions performed by the above described components, the terms used to describe such components are intended to correspond, unless otherwise indicated, to any component which performs the specified function of the described component (e.g., that is functionally equivalent), even though not structurally equivalent to the disclosed structure which performs the function in the herein illustrated exemplary implementations of the specification.
That is, the above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent flow transformations made by using the contents of the present specification and the drawings, such as mutual combination of technical features between various embodiments, or direct or indirect application to other related technical fields, are included in the scope of the present invention.
In addition, while a particular feature of the specification may have been disclosed with respect to only one of several implementations, such feature may be combined with one or more other features of the other implementations as may be desired and advantageous for a given or particular application. Furthermore, to the extent that the terms "includes," has, "" contains, "or variants thereof are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term" comprising. Further, it is understood that reference to "a plurality" herein means two or more.
Claims (10)
1. A liquid crystal dripping device, comprising:
the liquid crystal bottle is used for containing liquid crystal;
the filter is communicated with the liquid crystal bottle and is provided with a filter membrane;
the pump is communicated with the filter and is provided with a nozzle, the pump is used for pumping air so as to form negative pressure in a liquid crystal transmission channel from the liquid crystal bottle, the filter to the pump, and the liquid crystal in the liquid crystal bottle is pumped to the filter and drips out of the nozzle after passing through the filter membrane;
and the pressure sensor is positioned on a liquid crystal transmission channel from the filter to the nozzle and is used for detecting the pressure value at which the pressure sensor is positioned so as to allow the pump to be controlled to stop running when the pressure value is greater than a preset pressure threshold value.
2. The liquid crystal instillation device according to claim 1, wherein the filter membrane is coated on an inner wall of the filter, and the pressure sensor is located in a space surrounded by the filter membrane.
3. The liquid crystal instillator of claim 1, wherein the pump comprises a housing, the housing encloses a sealed cavity, the nozzle and the filter are respectively communicated with the sealed cavity, and the pressure sensor is located in the sealed cavity.
4. The liquid crystal instillation apparatus of claim 1, wherein the pressure sensor is located within the nozzle.
5. The liquid crystal instillation device of claim 1, wherein the pump is in communication with the filter via a conduit, and the pressure sensor is located within the conduit.
6. The liquid crystal instillation device according to any one of claims 1 to 5, further comprising an alarm connected to the pressure sensor, wherein the alarm is configured to alarm when the pressure value is greater than a preset pressure threshold.
7. The liquid crystal dripping device according to any one of claims 1 to 5, wherein the liquid crystal dripping device further comprises a control processor and a motor which are connected, the motor is in transmission connection with the piston of the pump, and the control processor is used for controlling the motor to stop transmitting the piston of the pump when the pressure value is larger than a preset pressure threshold value so as to control the pump to stop running.
8. A liquid crystal instillation method is characterized by comprising the following steps:
providing a liquid crystal instillation device which comprises a liquid crystal bottle, a filter, a pump and a pressure sensor, wherein the filter is communicated with the liquid crystal bottle and is provided with a filter membrane, the pump is communicated with the filter and is provided with a nozzle, and the pressure sensor is positioned on a liquid crystal transmission channel from the filter to the nozzle;
wherein the pump is used for pumping air so as to form negative pressure in a liquid crystal transmission channel from the liquid crystal bottle, the filter to the pump, pump the liquid crystal in the liquid crystal bottle to the filter, and drip out from the nozzle after passing through the filter membrane,
the pressure sensor detects the pressure value at which the pressure sensor is positioned;
and stopping the operation of the pump when the pressure value is greater than a preset pressure threshold value.
9. The liquid crystal instillation method according to claim 8, wherein the liquid crystal instillation device further comprises an alarm connected to the pressure sensor,
when the pressure value is greater than a preset pressure threshold value, the liquid crystal instillation method further comprises the following steps:
the alarm gives an alarm.
10. The liquid crystal dripping method according to claim 8, wherein the liquid crystal dripping device further comprises a control processor and a motor connected with each other, the motor is in transmission connection with the piston of the pump,
when the pressure value is greater than a preset pressure threshold value, the pump stops running, and the method comprises the following steps:
the control processor controls the motor to stop driving the piston of the pump.
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| CN201910977791.6A CN110673404B (en) | 2019-10-15 | 2019-10-15 | Liquid crystal dripping device and liquid crystal dripping method |
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| CN201910977791.6A CN110673404B (en) | 2019-10-15 | 2019-10-15 | Liquid crystal dripping device and liquid crystal dripping method |
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| CN110673404B true CN110673404B (en) | 2022-02-22 |
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