CN210700885U - Liquid storage device and liquid dispensing device provided with same - Google Patents
Liquid storage device and liquid dispensing device provided with same Download PDFInfo
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- CN210700885U CN210700885U CN201921160918.7U CN201921160918U CN210700885U CN 210700885 U CN210700885 U CN 210700885U CN 201921160918 U CN201921160918 U CN 201921160918U CN 210700885 U CN210700885 U CN 210700885U
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- liquid
- liquid storage
- storage device
- filter
- block
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- 239000007788 liquid Substances 0.000 title claims abstract description 220
- 238000003860 storage Methods 0.000 title claims abstract description 95
- 238000012546 transfer Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000000758 substrate Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 2
- 238000002360 preparation method Methods 0.000 claims 2
- 238000009826 distribution Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 16
- 238000010168 coupling process Methods 0.000 description 16
- 238000005859 coupling reaction Methods 0.000 description 16
- 239000004973 liquid crystal related substance Substances 0.000 description 10
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1007—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
Abstract
The utility model relates to a liquid storage device and possess its liquid distributor. The utility model provides a liquid storage device, it sets up in distribution head unit, liquid storage device includes: a liquid storage section that temporarily stores liquid and supplies the liquid to a nozzle section including at least one nozzle; and a filter unit coupled to the liquid storage unit, the filter unit including a filter therein to transfer the filtered liquid to the liquid storage unit, an upper cavity being formed at an upper portion of the filter.
Description
Technical Field
The utility model relates to a liquid storage device and possess its liquid distributor. More particularly, the present invention relates to a liquid storage device that temporarily stores liquid and supplies the liquid to a nozzle unit, and a liquid dispensing device including the liquid storage device.
Background
In the manufacture of electronic devices, devices that eject or apply a liquid for performing a specific function on a substrate are used. For example, in the manufacture of Flat Panel Display devices (FPDs) such as Liquid Crystal Displays (LCDs) and OLED displays, various distribution devices are used to form a structure for performing a predetermined function on a substrate. As an example, a liquid crystal display device is manufactured by bonding a color substrate having a color filter and a tft (thin Film transistor) substrate on which driving elements are arranged. Liquid crystal is applied between the color substrate and the TFT substrate, and paste (or sealant) is applied for bonding the color substrate and the TFT substrate.
In the manufacture of liquid crystal display devices, OLED elements, OLED displays, and the like, various dispensing devices for forming a liquid crystal layer, a paste pattern, an alignment film, a spacer, a conductive pattern, a color filter, a light emitting layer, a Black Matrix (Black Matrix), or a phosphor layer are used.
Fig. 1 shows an example of a conventional dispensing apparatus.
The dispensing device 1 comprises: a frame body 3; a loading table 5 provided above the frame 3 and configured to load a substrate S to which a predetermined liquid is distributed; a head support table 7 provided above the stage 5; a dispensing head unit 9 provided to the head support table 7 for dispensing a predetermined liquid. The loading table 5 can be driven in the X-axis or Y-axis direction. The head support base 7 is linearly movable in the Y-axis direction from the upper portion of the housing 3 by a drive motor 8. The dispensing head unit 9 may be adjusted in position in the Z-axis direction and may be driven in the X-axis and/or Y-axis directions to adjust the relative position with respect to the substrate.
On the other hand, in order to provide a more precise and accurate amount of liquid to a substrate, recently, dispensing apparatuses that eject liquid using an ink jet method have been increasing. For example, korean patent No. 0701442 discloses an ink-jet type liquid crystal coating method that can simultaneously coat liquid crystals over a large area in a short time.
SUMMERY OF THE UTILITY MODEL
However, when a liquid such as a liquid crystal is applied by an ink jet method, if foreign matter is contained in the liquid, the nozzle is clogged, which adversely affects the application quality.
An object of the present invention is to provide a liquid storage device and a liquid dispensing device including the same, which can prevent a nozzle from being clogged by removing foreign matters contained in liquid in the liquid storage device for temporarily storing the liquid to be discharged and supplying the liquid to the nozzle.
In addition, an object of the present invention is to provide a liquid storage device and a liquid dispensing device including the same, which can predict the life of a filter provided in the liquid storage device.
The utility model provides a liquid storage device, it sets up in distribution head unit, liquid storage device includes: a liquid storage section that temporarily stores liquid and supplies the liquid to a nozzle section including at least one nozzle; and a filter unit coupled to the liquid storage unit, the filter unit including a filter therein to transfer the filtered liquid to the liquid storage unit, an upper cavity being formed at an upper portion of the filter.
In one embodiment, the filter assembly comprises: a liquid supply hole provided at an upper side of the upper chamber, receiving the liquid from the outside; and a liquid outflow hole through which the liquid passing through the filter flows out to the liquid storage unit.
In addition, the filter assembly is formed with a passage for confirming a water level of the liquid in the upper cavity.
In addition, the channel includes a first channel and a second channel formed at both sides of the upper cavity.
In addition, the first channel and the second channel are respectively provided with an observation window made of transparent materials.
In one embodiment, the filter assembly includes a first block formed with the liquid supply hole and a second block formed with the liquid discharge hole, and the filter is disposed between the first block and the second block.
In addition, the first piece with the side of second piece is provided with the piece and combines the board, the both ends of block combination board combine in first piece with the second piece.
In addition, the nozzle portion is coupled to one side of the liquid storage portion.
Additionally, a water level sensor is further included for sensing a level of the liquid within the upper cavity.
Additionally, the utility model provides a liquid dispensing device, it includes: a loading table for loading a substrate; a head support table provided above the loading table; and a dispensing head unit provided to the head support table for dispensing a predetermined liquid, the dispensing head unit including: the liquid reservoir apparatus described above, including a level sensor for sensing the level of the liquid in the upper cavity of the filter assembly; and a control part for informing a replacement signal of the filter assembly when the water level sensor senses that the water level of the upper cavity is above a predetermined value.
Effect of the utility model
According to the present invention, by providing the filter unit in the liquid storage device (reservoir) in which the liquid is supplied from the nozzle portion for ejecting the liquid by the ink jet method or the like, it is possible to effectively remove the foreign matter contained in the liquid. This can prevent clogging of the nozzle in advance.
In addition, according to the present invention, the life of the filter included in the filter assembly can be predicted.
In addition, by integrating the filter assembly with the liquid storage device, a compact structure can be provided, which has an advantage of making it easier to replace the filter incorporated in the filter assembly.
Drawings
Fig. 1 is a schematic diagram showing an example of a conventional dispensing apparatus.
Fig. 2 is a perspective view showing a dispensing head unit of a liquid dispensing device according to a preferred embodiment of the present invention.
Fig. 3 is a perspective view showing a liquid storage device of a liquid dispensing device according to a preferred embodiment of the present invention.
Fig. 4 is an exploded perspective view illustrating a liquid storage device of a liquid dispensing device according to a preferred embodiment of the present invention.
Fig. 5 is a sectional view showing a filter assembly provided in a liquid storage device according to a preferred embodiment of the present invention.
Fig. 6 is a sectional view showing a state where liquid passes through a filter assembly provided in a liquid storage device according to a preferred embodiment of the present invention.
Reference numerals:
9: dispensing head unit 10: head unit support
22: liquid main storage unit 30: liquid storage device
32: liquid storage portion 34: nozzle part
36: upper wall 38: liquid injection hole
40: the filter assembly 40A: first block
40B: second block 42: liquid supply hole
44 a: first observation window 44 b: second observation window
46: upper cavity 48 a: first channel
48 b: second passage 50: lower cavity
52: filter mounting portion 54: filter
56: liquid outflow holes 60A, 60B: block combined board
62: light passing hole 70: water level sensor
80: control unit
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that, when reference numerals are attached to constituent elements in respective drawings, the same reference numerals are used as much as possible for the same constituent elements even if they are displayed on different drawings. In the description of the present invention, when it is determined that a detailed description of a related known structure or function may obscure the gist of the present invention, a detailed description thereof will be omitted. Further, preferred embodiments of the present invention will be described below, but the technical idea of the present invention is not limited or restricted thereto, and can be modified or variously implemented by those skilled in the art.
Fig. 2 is a perspective view showing a dispensing head unit of a liquid dispensing device according to a preferred embodiment of the present invention.
The liquid dispensing device has a configuration as shown in fig. 1. The dispensing head unit 9 may be coupled to a head support table (head support frame) 7 of the dispensing apparatus 1 as shown in fig. 1. The liquid discharged by the dispensing head unit 9 may be a liquid having a predetermined viscosity, and may be a liquid for forming any one of a liquid crystal layer, a paste pattern, an alignment film, a spacer, a conductive pattern, a color filter, a light emitting layer, a Black Matrix (Black Matrix), or a phosphor layer on a substrate.
In one embodiment, the dispensing head unit 9 comprises: a head unit support 10; a liquid main storage part 20 for placing a liquid main storage part 22; a liquid storage device 30 that receives and discharges liquid from the liquid main storage unit 22; and a filter assembly 40 coupled to the liquid storage part 32 provided to the liquid storage device 30, for filtering foreign substances contained in the liquid.
In one embodiment, the head unit support 10 includes: a coupling plate 12 coupled to the head support table 7; a driving part 14 provided at one side of the coupling plate 12; and a first plate 16 connected to the driving unit 14 and capable of being driven at least in one axial (vertical) direction.
In one embodiment, the fluid reservoir 30 may be secured to the lower end of the second plate 18 disposed opposite the first plate 16. In addition, the liquid main storage portion holding part 20 may be fixed to the second plate 18. The liquid main storage unit 20 may be configured to connect the first plate 16 and the second plate 18.
The upper open portion of the liquid main storage portion 22 may be provided with a cover 24. The liquid stored in the liquid main storage unit 22 is transferred to the filter assembly 40 through a first liquid supply pipe 26, a filter unit 27 for filtering the liquid supplied through the first liquid supply pipe 26, and a second liquid supply pipe 28 for transferring the liquid passed through the filter unit 27 to the liquid storage device 30. The liquid main storage unit 22 may be internally supplied with air pressure (air pressure supply configuration not shown), and the liquid stored in the liquid main storage unit 22 is discharged to the first liquid supply pipe 26 by the air pressure.
The liquid storage device 30 includes a liquid storage unit 32 and a filter assembly 40, and the filter assembly 40 is coupled to the liquid storage unit 32 or disposed above the liquid storage unit 32. In one embodiment, the liquid storage 32 may be a reservoir (reservoir). The liquid storage device 30 includes a nozzle portion 34 that receives and ejects liquid from the liquid storage portion 32. The nozzle portion 34 may be directly coupled to the liquid storage portion 32 or may be provided separately from the liquid storage portion 32. In one embodiment, when the nozzle portion 34 is directly coupled to the liquid storage portion 32, a flow path (not shown) for delivering the liquid in the liquid storage portion 32 to the nozzle portion 34 may be formed at the bottom of the liquid storage portion 32. In another embodiment, when the nozzle portion 34 is provided separately from the liquid storage portion 32, a pipe (not shown) for conveying the liquid in the liquid storage portion 32 to the nozzle portion 34 may be provided.
In one embodiment, the nozzle unit 34 includes a plurality of nozzles through which the liquid can be ejected in an inkjet manner. The second liquid supply pipe 28 is connected to the filter assembly 40, and the liquid supplied through the second liquid supply pipe 28 is supplied to the liquid storage portion 32 after being filtered by the filter assembly 40. The liquid temporarily stored in the liquid storage unit 32 is sent to the nozzle unit 34 and discharged. On the other hand, in the embodiment of the present invention, the filter unit 27 may not be provided, and in this case, the liquid supply pipes 26 and 28 may not be divided into two but may be provided with one. That is, the liquid is supplied from the liquid main storage portion 22 to the filter assembly 40 through one liquid supply pipe.
The liquid storage device 30 further includes a water level sensor 70 for sensing the water level within the filter assembly 40. In one embodiment, the water level sensor 70 is fixed to the first plate 16.
Fig. 3 is a perspective view illustrating a liquid storage device of a liquid dispensing device according to a preferred embodiment of the present invention.
The liquid storage device 30 includes a liquid storage unit 32 and a filter assembly 40 coupled to an upper portion of the liquid storage unit 32. In one embodiment, the filter assembly 40 is coupled to the upper wall 36 of the liquid storage portion 32.
The filter assembly 40 is formed with a liquid supply hole 42 for coupling with the liquid supply tube 28. In one embodiment, the end of the liquid supply tube 28 has a sleeve 29 formed with a thread 29a on one side, and the sleeve 29 is screw-coupled to the liquid supply hole 42 so that the liquid supply tube 28 can be coupled to the filter assembly 40. In another embodiment, the liquid supply tube 28 is formed with a screw thread 29a at one side of an end portion thereof, and the screw thread 29a is coupled to the liquid supply hole 42 so that the liquid supply tube 28 is coupled to the filter assembly 40.
The filter assembly 40 has viewing windows 44a, 44b for sensing the water level inside the filter assembly 40. The observation windows 44a and 44b are made of a transparent material and are coupled to the filter assembly 40. The water level sensor 70 can judge whether the water level inside the filter assembly 40 reaches a predetermined value through the above-mentioned observation windows 44a, 44 b. In one embodiment, the water level sensor 70 may be an optical sensor including a light emitting portion 70a and a light receiving portion 70 b. The light emitting portion 70a outputs light, and the light receiving portion 70b receives light output from the light emitting portion 70 a. The water level inside the filter assembly 40 can be sensed according to the intensity of the light received by the light-receiving part 70 b. The light emitting portion 70a is fixed to the first plate 16 by a first water level sensor fixing portion 72a, and the light receiving portion 70b is fixed to the first plate 16 by a second water level sensor fixing portion 72 b.
Fig. 4 is an exploded view illustrating a liquid storage device of a liquid dispensing device according to a preferred embodiment of the present invention, and fig. 5 is a cross-sectional view illustrating a filter assembly provided in the liquid storage device according to the preferred embodiment of the present invention.
The structure of the filter unit 40 will be described with reference to fig. 4 and 5. Fig. 5 shows a state in which the filter assembly 40 is coupled to the upper wall 36 of the liquid storage portion 32.
The filter assembly 40 may be constructed by combining a first block 40A with a second block 40B. The first block 40A is formed at an upper portion thereof with a liquid supply hole 42, and the first block 40A is formed at an inner portion thereof with an upper cavity 46. In one embodiment, a first passage 48a is formed through one sidewall of the first block 40A in communication with the upper cavity 46, and a second passage 48b is formed through the other sidewall of the first block 40A in communication with the upper cavity 46. The first passage 48a is provided with a first observation window 44a, and the second passage 48b is provided with a second observation window 44 b. The light output from the light emitting portion 70a is transmitted to the light absorbing portion 70b through the first observation window 44a and the second observation window 44 b.
In another embodiment, a channel communicated with the upper cavity is formed through one side wall of the first block, an observation window is arranged in the channel, a reflector is arranged on the other side wall of the upper cavity in the extending direction of the channel, the light-emitting part and the light-absorbing part are arranged on one side of the observation window, and light output by the light-emitting part can be received by the light-absorbing part through the reflector. The embodiment can arrange the light emitting part and the light absorbing part on one side, and save the installation space and installation components. A filter mounting portion 52 is formed at an upper portion of the second block 40B, and a filter 54 is mounted on the filter mounting portion 52. The filter mounting portion 52 may be formed by forming a step in the upper portion of the second block 40B. The filter 54 may be a mesh structure formed with pores. The filter 54 may be disc-shaped. In one embodiment, the filter 54 may be a stainless steel disk filter. The second block 40B has a lower cavity 50 formed below the filter 54. The lower chamber 50 is formed at the bottom thereof with a liquid outflow hole 56.
The liquid passing through the filter assembly 40 through the liquid outflow hole 56 is transmitted to the liquid injection hole 38 formed in the upper wall 36 of the liquid storage part 32. In one embodiment, the liquid outflow hole 56 is formed at the bottom thereof with a pipe insertion part 57, and the liquid can be transferred from the filter assembly 40 to the liquid storage part 32 through the injection pipe 39 inserted at both ends thereof into the pipe insertion part 57 and the liquid injection hole 38. With the injection pipe 39, leakage when transferring the liquid from the filter assembly 40 to the liquid storage portion 32 can be prevented. In another embodiment, the injection pipe 39 may not be provided, and a sealing member such as an O-ring (O-ring) or a gasket (gasket) may be provided between the liquid outflow hole 56 and the liquid injection hole 38.
After the filter 54 is positioned between the first block 40A and the second block 40B, the first block 40A and the second block 40B are combined. When the filter 54 is replaced, the first block 40A and the second block 40B are disassembled, and then the filter 54 can be replaced.
Fig. 4 and 5 show block coupling plates 60A and 60B for coupling the first block 40A and the second block 40B. Both ends of the block coupling plates 60A, 60B may be fixed to the sides of the first block 40A and the second block 40B. In fig. 4 and 5, the block coupling plates 60A and 60B show a first block coupling plate 60A coupled to the left side of the first block 40A and the second block 40B and a second block coupling plate 60B coupled to the right side of the first block 40A and the second block 40B. The block coupling plates 60A and 60B are formed with upper through holes 64 through which the first coupling screws 65 pass and lower through holes 66 through which the second coupling screws 67 pass, and light passing holes 62 are formed between the upper through holes 64 and the lower through holes 66. The first block 40A is formed with a first fixing hole 58, and the second block 40B is formed with a second fixing hole 59. The first coupling screws 65 are coupled to the first fixing holes 58 through the upper through holes 64, and the second coupling screws 67 are coupled to the second fixing holes 59 through the lower through holes 66, so that the block coupling plates 60A and 60B are coupled to the side surfaces of the first block 40A and the second block 40B. The observation windows 44a, 44b are exposed to the outside through the light passing hole 62.
The second block 40B is formed with a third fixing hole 55, and a third coupling screw 69 couples the second block 40B to the upper wall 36 of the liquid storage part 32 through the third fixing hole 55 to fix the filter assembly 40 to the liquid storage part 32.
Fig. 6 is a sectional view showing a state where liquid passes through a filter assembly provided in a liquid storage device according to a preferred embodiment of the present invention.
The liquid 100 supplied through the liquid supply hole 42 flows out from the liquid outflow hole 56 after passing through the filter 50.
However, the level of the liquid 100 in the upper chamber 46 above the filter 50 varies depending on the permeability (permeation rate) of the liquid 100 in the filter 50. In the state of fig. 6, if the permeability of the liquid 100 passing through the filter 50 is lowered, the level of the liquid 100 in the upper chamber 46 is raised, and the gas inside the upper chamber 46 is compressed to increase the gas pressure. If the gas pressure inside the upper chamber 46 increases, the permeability of the filter 50 increases. As a result, the liquid level of the upper chamber 46 is determined at a position where the amount of the liquid 100 supplied through the liquid supply hole 42 and the amount of the liquid 100 permeating the filter 50 are balanced.
The more foreign substances filtered by the filter 50, the lower the liquid permeability of the filter 50, and as a result, the water level of the liquid 100 rises. The water level of the liquid 100 rises to a predetermined level or more, and is sensed by the water level sensor 70. That is, the amount of light sensed by the light-receiving portion 70b is reduced, and the controller 80 determines that the water level in the upper chamber 46 of the filter assembly 40 has risen to a predetermined value or more.
After that, the control unit 80 determines that the life of the filter 50 of the filter unit 40 is over, and may output a replacement signal of the filter 50 by an external device (not shown) by a visual and/or audible method.
According to the present invention, the filter assembly 40 can effectively remove foreign matter in the liquid supplied to the liquid storage portion (reservoir), and the life of the filter 50 in the filter assembly 40 can be automatically determined. In particular, the present invention is more effectively applied to a case where liquid crystal or the like is ejected onto a substrate by a plurality of nozzles, such as an ink jet system.
The above description is only for illustrating the technical idea of the present invention by way of example, and a person having ordinary knowledge in the technical field to which the present invention belongs can make various modifications, changes, or replacements within a range not exceeding the essential characteristics of the present invention. Therefore, the embodiments and drawings disclosed in the present invention are not intended to limit the technical spirit of the present invention but to illustrate, and the scope of the technical spirit of the present invention is not limited to the embodiments and drawings. The scope of protection of the present invention should be interpreted according to the claims, and all technical ideas within the scope equivalent thereto should be included in the scope of the claims.
Claims (11)
1. A liquid storage device provided to a dispensing head unit, wherein the liquid storage device comprises:
a liquid storage section temporarily storing a liquid, and supplying the liquid to a nozzle section including at least one nozzle; and a process for the preparation of a coating,
and a filter unit coupled to the liquid storage unit, the filter unit including a filter therein to transfer the filtered liquid to the liquid storage unit, an upper cavity being formed at an upper portion of the filter.
2. The liquid storage device of claim 1,
the filter assembly includes:
a liquid supply hole provided at an upper side of the upper chamber, for receiving the liquid from the outside; and
and a liquid outflow hole through which the liquid passing through the filter flows out to the liquid storage unit.
3. The liquid storage device of claim 1,
the filter assembly is formed with a passage for confirming a water level of the liquid in the upper cavity.
4. The liquid storage device of claim 3,
the channel includes a first channel and a second channel formed on both sides of the upper cavity.
5. The liquid storage device of claim 4,
the first channel and the second channel are respectively provided with an observation window made of transparent materials.
6. The liquid storage device of claim 2,
the filter assembly includes a first block formed with the liquid supply hole and a second block formed with the liquid outflow hole, and the filter is disposed between the first block and the second block.
7. The liquid storage device of claim 6,
the side of first piece with the second piece is provided with the block and combines the board, the both ends of block combination board combine in first piece with the second piece.
8. The liquid storage device of claim 6,
the second block includes a lower cavity formed at a lower portion of the filter, and the liquid outflow hole is formed at a lower portion of the lower cavity.
9. The liquid storage device according to any one of claims 1 to 8,
the nozzle unit is coupled to one side of the liquid storage unit.
10. The liquid storage device according to any one of claims 1 to 8,
the liquid storage device further includes a level sensor for sensing a level of the liquid within the upper cavity.
11. A liquid dispensing device, comprising: a loading table for loading a substrate; a head support table provided above the loading table; and a dispensing head unit provided to the head support table for dispensing a predetermined liquid, wherein,
the dispensing head unit comprises:
the liquid storage device of any one of claims 1 to 9, including a level sensor for sensing a level of the liquid within the upper cavity of the filter assembly; and a process for the preparation of a coating,
a control part for informing a replacement signal of the filter assembly when the water level sensor senses that the water level of the upper chamber is above a predetermined value.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020180085286A KR102131021B1 (en) | 2018-07-23 | 2018-07-23 | Reservoir device and liqud dispensing device having the same |
| KR10-2018-0085286 | 2018-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210700885U true CN210700885U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921160918.7U Active CN210700885U (en) | 2018-07-23 | 2019-07-23 | Liquid storage device and liquid dispensing device provided with same |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR102131021B1 (en) |
| CN (1) | CN210700885U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115167041B (en) * | 2022-08-02 | 2023-07-14 | 辛集冀雅电子有限公司 | Liquid crystal screen crystal box processing equipment and processing method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3995695B2 (en) * | 2005-12-15 | 2007-10-24 | シャープ株式会社 | Filter unit |
| KR20120004300U (en) * | 2010-12-08 | 2012-06-18 | 조태호 | Air filters are installed in the water level sensor |
| KR101753855B1 (en) * | 2015-01-30 | 2017-07-03 | (주)엠큐빅 | non-point source wastewater treatment system with the function of both alarming and sensing the filter blockage using overflowing sensor |
| KR102621740B1 (en) * | 2016-12-20 | 2024-01-05 | 주식회사 탑 엔지니어링 | Inkjet type liquid dispensing module and deaeration method thereof |
-
2018
- 2018-07-23 KR KR1020180085286A patent/KR102131021B1/en active IP Right Grant
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2019
- 2019-07-23 CN CN201921160918.7U patent/CN210700885U/en active Active
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| Publication number | Publication date |
|---|---|
| KR20200010785A (en) | 2020-01-31 |
| KR102131021B1 (en) | 2020-07-07 |
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