CN101135815A - Injection assembly for liquid crystal dispensing apparatus - Google Patents

Injection assembly for liquid crystal dispensing apparatus Download PDF

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Publication number
CN101135815A
CN101135815A CNA200710164259XA CN200710164259A CN101135815A CN 101135815 A CN101135815 A CN 101135815A CN A200710164259X A CNA200710164259X A CN A200710164259XA CN 200710164259 A CN200710164259 A CN 200710164259A CN 101135815 A CN101135815 A CN 101135815A
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CN
China
Prior art keywords
liquid crystal
elastic plate
nozzle
nozzle assembly
substrate
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA200710164259XA
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Chinese (zh)
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CN100547468C (en
Inventor
金永敏
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Top Engineering Co Ltd
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Top Engineering Co Ltd
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Publication date
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Publication of CN101135815A publication Critical patent/CN101135815A/en
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Publication of CN100547468C publication Critical patent/CN100547468C/en
Expired - Fee Related legal-status Critical Current
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    • 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
    • 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
    • B05C5/0254—Coating heads with slot-shaped outlet
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing 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

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Coating Apparatus (AREA)

Abstract

The present invention discloses a nozzle component for liquid crystal dispensing device. The nozzle component comprises: a nozzle for accommodating the liquid crystal and dispensing the liquid crystal on a substrate while the nozzle is moving relative to the substrate; and an elastic plate which is arranged at the passage place that the liquid crystal flows in the nozzle and is provided with at least one slot and is formed by elastic material. When the discharge pressure is acting on the liquid crystal, the elastic plate makes elastic deformation in order to make the liquid crystal pass through the elastic plate, and when the discharge pressure is not acting on the liquid crystal, the elastic plate will restore to the primary shape in order to absorb the liquid crystal drop left on the lower part of the elastic plate back to the upper space of the elastic plate.

Description

The nozzle assembly that is used for device and method for dispensing liquid crystal
CROSS-REFERENCE TO RELATED APPLICATIONS
The application requires in the right of priority of the 10-2006-0105058 korean patent application of submission on October 27th, 2006, and its full content is hereby expressly incorporated by reference.
Technical field
The present invention relates to the manufacturing of LCD, more particularly, relate to a kind of nozzle assembly that is used for device and method for dispensing liquid crystal, described device and method for dispensing liquid crystal is used for liquid crystal is assigned to substrate.
Background technology
Generally speaking, flat-panel monitor (FPD) is a kind of than the televisor or the lighter and thinner image display device of monitor that use cathode-ray tube (CRT).This flat-panel monitor comprises LCD (LCD), Plasmia indicating panel (PDP), field-emitter display (FED), Organic Light Emitting Diode (OLED) etc.
LCD shows required image by offering liquid crystal cells (cell) respectively corresponding to the data of image information signal, wherein said liquid crystal cells with the arranged in form of matrix to regulate the transmittance of liquid crystal cells.LCD thin thickness and in light weight, and have lower power consumption and lower operating voltage.Because these advantages, LCD is able to widespread use.
Below, will method that make the liquid crystal panel that generally uses in the LCD be described.
At first, on top glass substrate, form color filter and common electrode with pattern form.On the lower glass substrate relative, form thin film transistor (TFT) (TFT) and pixel electrode with pattern form with top glass substrate.Then, form alignment respectively on top glass substrate and lower glass substrate, friction (rub) this alignment is so that provide tilt angle and aligning direction to the liquid crystal molecule that is formed at the liquid crystal layer between the alignment then.For keep between top glass substrate and the lower glass substrate the gap, prevent that liquid crystal from leaking and making between top glass substrate and the lower glass substrate and seal, will seal pastel and be applied on one of top glass substrate and lower glass substrate with predetermined pattern.Then, between top glass substrate and lower glass substrate, form liquid crystal layer, thereby produce liquid crystal panel.
In order to form liquid crystal layer, can use liquid crystal distributing method herein.This liquid crystal distributing method is undertaken by following steps: liquid crystal is assigned on the space that is limited by the sealing pastel on the substrate to form liquid crystal layer, then substrate is put together, and make the sclerosis of sealing pastel, thereby substrate junction is lumped together.In order to form liquid crystal layer, use device and method for dispensing liquid crystal by this liquid crystal distributing method.When nozzle relatively moved with respect to substrate, device and method for dispensing liquid crystal formed liquid crystal layer by liquid crystal is assigned to from nozzle (supplying liquid crystal by this nozzle) on the substrate.
In this device and method for dispensing liquid crystal, because liquid crystal has higher viscosity, so after the distribution of finishing liquid crystal, liquid crystal drop remains on the tip of nozzle.When nozzle moved, the liquid crystal drop that remains on the nozzle tip may drop onto on the undesirable position of substrate, thereby makes this substrate dirty.For fear of this problem, according to conventional art, provide independent vacuum pressure generation device, so that produce vacuum pressure in nozzle, thereby the liquid crystal drop that will remain on the nozzle tip sucks back in the nozzle.But in conventional art, owing to need accurately control vacuum pressure so that liquid crystal drop is sucked back in the nozzle equably, this vacuum pressure generation device has complicated structure.
Summary of the invention
The invention provides a kind of nozzle assembly that is used for device and method for dispensing liquid crystal, wherein, this nozzle assembly has simple structure, and after the distribution of finishing liquid crystal, this nozzle assembly can easily suck back the liquid crystal drop that remains on the nozzle tip in the nozzle.
According to an aspect of the present invention, provide a kind of nozzle assembly that is used for device and method for dispensing liquid crystal, this nozzle assembly comprises: nozzle is used to hold liquid crystal, and when this nozzle relatively moves with respect to substrate liquid crystal is assigned on the substrate; And elastic plate, be arranged on the passage place of the liquid crystal flow warp in the nozzle, this elastic plate has at least one slit, and this elastic plate forms by resilient material, wherein, when discharge pressure acts on liquid crystal, the elastic plate elastic deformation, so that make liquid crystal pass through described at least one slit, and when not having discharge pressure to act on liquid crystal, elastic plate is returned to its original shape, thereby the liquid crystal drop that will remain on the elastic plate bottom sucks back in the upper space of elastic plate.
Be appreciated that the general introduction of front and the detailed description of back all are exemplary and indicative, and be intended to provide further instruction for the present invention for required protection.
Description of drawings
Accompanying drawing is included with to the invention provides further understanding, and is included in the instructions and constitutes the part of this instructions, and accompanying drawing shows exemplary embodiment of the present invention, and is used for explaining aspects more of the present invention with describing.
Fig. 1 is the skeleton view according to the nozzle assembly that is used for device and method for dispensing liquid crystal of the embodiment of the invention;
Fig. 2 is the skeleton view of the elastic plate of nozzle assembly shown in Figure 1; And
Fig. 3 A to Fig. 3 C is the view that is used to illustrate the operational instances of nozzle assembly shown in Figure 1.
Embodiment
More fully describe the present invention below with reference to accompanying drawings, exemplary embodiment of the present invention has been shown in the accompanying drawing.
Fig. 1 is the skeleton view according to the nozzle assembly that is used for device and method for dispensing liquid crystal 100 of the embodiment of the invention, and Fig. 2 is the skeleton view of the elastic plate 120 of nozzle assembly 100 shown in Figure 1.
See figures.1.and.2, nozzle assembly 100 comprises nozzle 110, and this nozzle assembly is included in and is used for forming on substrate in the device and method for dispensing liquid crystal of liquid crystal layer by liquid crystal being assigned on the substrate.
Nozzle 110 holds the liquid crystal of scheduled volume, and liquid crystal is being assigned on the substrate when relatively moving with respect to substrate.Nozzle 110 portion within it has the space, and comprises the nozzle tip 111 that is positioned at lower end.Nozzle 110 holds the liquid crystal that comes from syringe, wherein stores liquid crystal in the syringe.Between nozzle 110 and the syringe valve is installed.This valve control will be supplied to the amount of liquid crystal of nozzle 110, make nozzle 110 can hold the liquid crystal of scheduled volume.And, when during to nozzle 110 supply liquid crystal, applying discharge pressure by the liquid crystal in syringe, from syringe so that from nozzle 110, discharge liquid crystal by opening or closing valve.Herein, the discharge pressure that puts on liquid crystal is provided by pump, pneumatic feeder (pneumaticfeeder) etc.Simultaneously,, then can use the valve of the air supply that is used to control between pneumatic feeder and the syringe, rather than be used to control the valve of the liquid crystal supply between syringe and the nozzle 110 if apply discharge pressure to liquid crystal by pneumatic feeder.
After passing through nozzle 110 dispensing liquid crystal, because liquid crystal has viscosity higher, so liquid crystal drop remains on the nozzle tip 111.When nozzle 110 moved, the liquid crystal drop that remains on the nozzle tip 111 may drop onto on the undesirable position of substrate, and this substrate of making dirty.For fear of this problem,, in nozzle 110, form elastic plate 120 according to current embodiment.
Elastic plate 120 is formed by the resilient material with predetermined thickness.Herein, as shown in Figure 2, elastic plate 120 forms disc-shape corresponding to the inner space of the nozzle 110 with round section.And elastic plate 120 is vault (dome) shape along giving prominence to the direction of nozzle 110 supply liquid crystal.Simultaneously, except that structure shown in Figure 2, elastic plate 120 also form when the time when liquid crystal applies discharge pressure in dispensing liquid crystal can elastic deformation arbitrary structures.For example, elastic plate 120 forms writing board shape.
And elastic plate 120 can be formed by multiple resilient material.Preferably, even this resilient material is the material that does not also react with liquid crystal when using for a long time.
Elastic plate 120 has at least one slit 121, and liquid crystal passes through described at least one slit when the discharge pressure that acts on liquid crystal is delivered on the elastic plate 120, and then in the elastic plate 120 elastic deformations takes place, and liquid crystal is assigned on the substrate simultaneously.Herein, slit 121 can be at the place, centre of elastic plate 120 a plurality of slits intersected with each other.
Preferably, each slit 121 has predetermined width, and when elastic plate 120 elastic deformation does not take place, that is, before being assigned to liquid crystal on the substrate or after finishing the distribution of liquid crystal, this predetermined width is enough to prevent that liquid crystal from letting out from elastic plate 120.Simultaneously, though figure 2 illustrates two slits 121,, can in elastic plate 120, be formed with one, three or more a plurality of slit.
And preferably, a plurality of slits 121 are arranged with identical angle each other.Therefore, owing to act on the discharge pressure of liquid crystal when the width of elastic deformation and then slit 121 broadens, the shape after slit 121 broadens roughly becomes circle when elastic plate 120, and is corresponding to the round section of the inner space of nozzle tip 111, as described below.And, when the branch timing of finishing liquid crystal, do not have discharge pressure to act on liquid crystal and be delivered on the elastic plate 120, thereby elastic plate 120 is returned to its original shape.Liquid crystal drop on remaining in elastic plate 120 bottoms is sucked back in the top of elastic plate 120 time, and the restoring force of elastic plate 120 passes to liquid crystal equably, thereby liquid crystal can be sucked back in the top of elastic plate 120 equably.
Elastic plate 120 crosses the passage that liquid crystal flows through and is arranged in the nozzle 110.That is, elastic plate 120 is installed in the nozzle 110 by this way,, does not have liquid crystal flow all the other positions except slit 121 through elastic plate 120 that is.
Elastic plate 120 is installed in the nozzle 110 in mode moving up and down.The purpose of this structure is, when thereby the distribution discharge pressure of finishing liquid crystal no longer is delivered on the elastic plate 120, partly be returned to its original shape and elastic plate 120 is moved up by the elastic deformation that makes elastic plate 120, strengthen the liquid crystal suction effect greatly.For this operation, can around elastic plate 120, be additionally formed support portion 122.
Support portion 122 support elastic plates 120, thus elastic plate 120 stably moves up and down slidably along the inwall of nozzle 110.Herein, support portion 122 has the structure that can be attached to nozzle 110 inwalls in the edge of elastic plate 120 tightly.And 122 top circumference is formed with teat 122a along the support portion.Teat 122a hooks (caught) by lock pawl (locking jaw) 110a that is formed on nozzle 110 inwalls, thus when elastic plate 120 because when discharge pressure and elastic deformation, elastic plate 120 no longer moves down.That is, teat 122a restriction elastic plate 120 moves down.
Make separately with elastic plate 120 support portion 122, then elastic plate 120 is fixed in this support portion.But preferably, support portion 122 is by forming with elastic plate 120 identical materials, and integrally formed with elastic plate 120, thereby can guarantee long durability.
When discharge pressure acts on liquid crystal, have elastic plate 120 elastic deformations of said structure so that liquid crystal passes through slit 121, and when not having discharge pressure to act on liquid crystal, elastic plate is returned to original shape, so that the liquid crystal drop that will remain on elastic plate 120 bottoms sucks back in the top of elastic plate 120.That is, according to current embodiment, the liquid crystal drop that may residue in after the distribution of finishing liquid crystal on the nozzle tip 111 can be sucked back in the nozzle 110 at an easy rate by simple structure.
Below, describe this process in detail with reference to Fig. 3 A, 3B and 3C.In Fig. 3 B and 3C, for convenience of description, only show the liquid crystal drop that remains on elastic plate 120 bottoms.
As shown in Figure 3A, if begin liquid crystal 10 is assigned on the substrate and apply discharge pressure from the upper space of nozzle 110 to liquid crystal 10, the discharge pressure that then puts on liquid crystal 10 is passed to elastic plate 120.Therefore, elastic plate 120 moves down according to the guiding of support portion 122 to be locked pawl 110a until teat 122a and is hooked, and elastic deformation.Therefore, the width of slit 121 broadens, so that liquid crystal 10 is by the opening after the broadening of slit 121, thereby from nozzle tip 111 dispensing liquid crystal 10.
After the distribution of finishing liquid crystal 10, because liquid crystal 10 has higher viscosity, liquid crystal 10 remains on the bottom of elastic plate 120, that is, remain on the bottom of slit 121, shown in Fig. 3 B.At this moment, owing to finished the distribution of liquid crystal 10, so no longer apply discharge pressure to elastic plate 120.
Therefore, shown in Fig. 3 C, elastic plate 120 is returned to its original shape.That is, elastic plate 120 moves upward according to the guiding of support portion 122, and the elastic deformation of elastic plate 120 partly is returned to its original shape simultaneously.Therefore, owing to there is not discharge pressure to act on liquid crystal 10, so acting on the pressure of elastic plate 120 reduces, the upper volume of elastic plate 120 reduces simultaneously, thereby the liquid crystal with viscosity higher 10 that remains on elastic plate 120 bottoms is successfully sucked back in the upper space of elastic plate 120 by slit 121.
As mentioned above, according to the present invention, by simple structure, the liquid crystal drop that can will remain on the nozzle tip at an easy rate after liquid crystal distributes sucks back in the nozzle.Therefore, unlike conventional art, owing to do not need to be used for to suck back independent vacuum pressure generation device in the nozzle with residuing in liquid crystal drop on the nozzle tip, so can simplify the structure of device and method for dispensing liquid crystal.And, remain in the phenomenon on the nozzle tip owing to can prevent after liquid crystal distributes liquid crystal drop, so can avoid when nozzle moves liquid crystal drop to drop onto on the undesirable position of substrate and the problem of this substrate of making dirty.
To those skilled in the art obviously, can under the prerequisite that does not break away from the spirit or scope of the present invention, carry out various modifications and variations to the present invention.Therefore, the present invention is intended to cover these modifications of the present invention and modification, as long as these are revised and modification drops within the scope of claims and their equivalent.

Claims (6)

1. nozzle assembly that is used for device and method for dispensing liquid crystal, described nozzle assembly comprises:
Nozzle is used to hold liquid crystal, and when described nozzle moves with respect to substrate described liquid crystal is assigned on the described substrate; And
Elastic plate, be arranged on the passage place of the described liquid crystal flow warp in the described nozzle, described elastic plate has at least one slit, and described elastic plate is made by resilient material, wherein, when discharge pressure acts on described liquid crystal, described elastic plate elastic deformation, so that make described liquid crystal by described at least one slit, and when described discharge pressure no longer acts on described liquid crystal, described elastic plate is returned to its original shape, thereby the liquid crystal drop that will remain on the bottom of described elastic plate sucks back in the described elastic plate.
2. nozzle assembly according to claim 1, wherein, described at least one slit is a plurality of slits that intersect at the place, centre of described elastic plate.
3. nozzle assembly according to claim 2, wherein, described a plurality of slits are arranged with identical angle each other.
4. nozzle assembly according to claim 1, wherein, described elastic plate is a dome shape.
5. nozzle assembly according to claim 1, wherein, described elastic plate can move up and down in described nozzle.
6. nozzle assembly according to claim 5, wherein, described elastic plate further comprises the support portion that moves up or move down that is used to support described elastic plate, described support portion further comprises teat, described teat forms the lock claw hook at the inwall place that is formed on described nozzle and lives, and limits moving down of described elastic plate.
CNB200710164259XA 2006-10-27 2007-10-17 The nozzle assembly that is used for device and method for dispensing liquid crystal Expired - Fee Related CN100547468C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020060105058 2006-10-27
KR1020060105058A KR20080037852A (en) 2006-10-27 2006-10-27 Nozzle assembly for liquid crystal dispensing apparatus

Publications (2)

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CN101135815A true CN101135815A (en) 2008-03-05
CN100547468C CN100547468C (en) 2009-10-07

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CN (1) CN100547468C (en)
TW (1) TWI340667B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102540584A (en) * 2010-12-07 2012-07-04 塔工程有限公司 Nozzle head
CN108375854A (en) * 2018-03-13 2018-08-07 信利（惠州）智能显示有限公司 Liquid crystal water dropper and liquid crystal drip irrigation device
CN110773379A (en) * 2018-07-26 2020-02-11 诺信公司 Dispensing tube for dispensing liquid material
CN111570206A (en) * 2020-06-19 2020-08-25 杭州星战科技有限公司 Antidrip nozzle and hot melt rifle
CN112044691A (en) * 2020-10-13 2020-12-08 浙江远恒电子科技有限公司 LED lamp dispensing device with glue head cleaning function

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102540584A (en) * 2010-12-07 2012-07-04 塔工程有限公司 Nozzle head
CN108375854A (en) * 2018-03-13 2018-08-07 信利（惠州）智能显示有限公司 Liquid crystal water dropper and liquid crystal drip irrigation device
CN108375854B (en) * 2018-03-13 2021-06-18 信利（惠州）智能显示有限公司 Liquid crystal dripper and liquid crystal drip irrigation device
CN110773379A (en) * 2018-07-26 2020-02-11 诺信公司 Dispensing tube for dispensing liquid material
CN110773379B (en) * 2018-07-26 2023-09-08 诺信公司 Dispensing tube for dispensing liquid material
CN111570206A (en) * 2020-06-19 2020-08-25 杭州星战科技有限公司 Antidrip nozzle and hot melt rifle
CN112044691A (en) * 2020-10-13 2020-12-08 浙江远恒电子科技有限公司 LED lamp dispensing device with glue head cleaning function

Also Published As

Publication number Publication date
KR20080037852A (en) 2008-05-02
TWI340667B (en) 2011-04-21
TW200815108A (en) 2008-04-01
CN100547468C (en) 2009-10-07

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