WO2012176681A1 - Appareil de lâcher de cristaux liquides - Google Patents

Appareil de lâcher de cristaux liquides Download PDF

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Publication number
WO2012176681A1
WO2012176681A1 PCT/JP2012/065216 JP2012065216W WO2012176681A1 WO 2012176681 A1 WO2012176681 A1 WO 2012176681A1 JP 2012065216 W JP2012065216 W JP 2012065216W WO 2012176681 A1 WO2012176681 A1 WO 2012176681A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
unit
filter
dropping device
filter unit
Prior art date
Application number
PCT/JP2012/065216
Other languages
English (en)
Japanese (ja)
Inventor
山崎　和幸
Original Assignee
シャープ株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Publication of WO2012176681A1 publication Critical patent/WO2012176681A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/30—Dip tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/40—Filters located upstream of the spraying outlets
    • 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

Definitions

  • the present invention relates to a liquid crystal dropping device that drops liquid crystal.
  • a general liquid crystal dropping apparatus 200 will be described with reference to FIG.
  • the liquid crystal dropping apparatus 200 corresponds to the configuration disclosed in Japanese Patent Laid-Open No. 2006-133251 (Patent Document 1).
  • the liquid crystal dropping device 200 is provided in the liquid crystal container 210 filled with the liquid crystal material 230, the pressure member 240 that pressurizes the liquid crystal material 230, the nozzle part 250 provided at the tip of the liquid crystal container 210, and the nozzle part 250. And a filtering member 220.
  • the liquid crystal material 230 filled in the liquid crystal container 210 is pressurized by the pressure member 240.
  • the liquid crystal material 230 filled in the liquid crystal container 210 is discharged from the nozzle unit 250 after being filtered by the filter member 220.
  • the filtering member 220 is provided in the nozzle portion 250 from which the liquid crystal material 230 is discharged. It is assumed that the filter member 220 is clogged. In this case, when the inside of the liquid crystal container 210 is depressurized by the pulling back operation of the pressurizing member 240, air biting from the discharge port surface of the nozzle portion 250 may occur. When the liquid crystal material 230 is discharged from the nozzle portion 250 again, the air bite causes a defect such as liquid crystal repelling in the liquid crystal material 230 discharged from the nozzle portion 250.
  • the present invention is a liquid crystal dropping device that drops liquid crystal, and can drop a liquid crystal material in a state in which foreign matter in the liquid crystal material is appropriately filtered without causing air catching in the dropped liquid crystal material
  • An object is to provide an apparatus.
  • the liquid crystal dropping device includes a liquid crystal container for storing a liquid crystal material, a filter unit, a filter unit immersed in the liquid crystal material, and the liquid crystal sucked out from the liquid crystal container through the filter unit.
  • a liquid crystal nozzle for discharging the material.
  • the filter unit includes a first unit having a first tube portion formed in a hollow shape, and a second unit having a second tube portion formed in a hollow shape, and the first unit.
  • the second unit are integrated with each other with the filter unit disposed between the first unit and the second unit, and the first unit and the second unit are integrated with each other, The first tube portion and the second tube portion communicate with each other with the filter portion interposed therebetween.
  • the filter unit has a filter jig part to which the filter part is detachably attached.
  • the average pore size of the filter part is 0.5 ⁇ m or more and 1.0 ⁇ m or less.
  • a liquid crystal dropping device for dropping a liquid crystal, and the liquid crystal material can be dropped in a state in which foreign matter in the liquid crystal material is appropriately filtered without causing the air to bite the dropped liquid crystal material.
  • a liquid crystal dropping device can be obtained.
  • FIG. 1 is a cross-sectional view schematically showing an overall configuration of a liquid crystal dropping device 100 according to an embodiment.
  • the liquid crystal dropping device 100 includes a liquid crystal container 10, a filter unit 20, tubes 40 and 46, a diaphragm switch 42, a liquid crystal syringe 44, and a liquid crystal nozzle 50.
  • the liquid crystal container 10 has a bottomed cylindrical shape.
  • the capacity of the liquid crystal container 10 is, for example, 500 ml.
  • a liquid crystal material 30 is stored in the liquid crystal container 10.
  • An opening 12 is provided in the upper part of the liquid crystal container 10.
  • the opening 12 has a diameter 12D.
  • the opening 12 is closed by the lid member 14.
  • the filter unit 20 is disposed inside the liquid crystal container 10 and is immersed in the liquid crystal material 30.
  • the filter unit 20 is connected to the diaphragm switch 42 through the tube 40.
  • the tube 40 is made of, for example, Teflon (registered trademark).
  • the liquid crystal syringe 44 is provided so as to communicate with the diaphragm switch 42.
  • the liquid crystal nozzle 50 is connected to the diaphragm switch 42 through the tube 46.
  • the tube 46 is also made of, for example, Teflon (registered trademark).
  • FIG. 2 is a cross-sectional view showing an exploded state of the filter unit 20 used in the liquid crystal dropping device 100 (see FIG. 1).
  • the filter unit 20 includes a first unit 21, a filter structure 25, and a second unit 22.
  • the first unit 21 has a first cylindrical portion 23 formed in a hollow shape and a screwing portion 21T whose surface is formed in a female screw shape.
  • the outer diameter of the first cylindrical portion 23 of the first unit 21 has a diameter 21D.
  • the value of the diameter 21D is smaller than the value of the diameter 12D of the opening 12 in the liquid crystal container 10 (see FIG. 1).
  • the value of the diameter 21D is preferably 14 mm or less.
  • the second unit 22 has a second cylindrical portion 24 formed in a hollow shape and a screwing portion 22T whose surface is formed in a male screw shape.
  • the filter structure 25 is formed in a disc shape.
  • the filter structure 25 has a diameter 25D.
  • the value of the diameter 21D in the first cylindrical portion 23 is, for example, 14 mm
  • the value of the diameter 25D is preferably, for example, 8 mm or less.
  • the filter structure 25 is composed of mesh portions 26 and 28 (filter jig portions) and a filter portion 27.
  • the mesh part 26 and the mesh part 28 are made of, for example, SUS or PTFE (polytetrafluoroethylene).
  • the filter portion 27 is sandwiched between the mesh portion 26 and the mesh portion 28.
  • the filter unit 27 for example, a Teflon (registered trademark) material that does not melt into the liquid crystal material 30 is used.
  • a Teflon (registered trademark) material that does not melt into the liquid crystal material 30 is used.
  • an omnipore membrane filter manufactured by Japan Millipore Corporation can be used as the filter unit 27.
  • FIG. 3 is a cross-sectional view showing an assembled state of the filter unit 20 used in the liquid crystal dropping device 100 (see FIG. 1). As shown in FIG. 3, in a state where the filter unit 20 is assembled, the first unit 21 and the second unit 22 are in a state where the filter structure 25 is disposed between the first unit 21 and the second unit 22. And integrated with each other.
  • the filter unit 27 is fixed to the inner wall surface of the first unit 21 and the inner wall surface of the second unit 22 through the mesh units 26 and 28, respectively. By the fixing, the filter unit 27 is prevented from swinging when the liquid crystal material 30 (see FIG. 1) is sucked up.
  • the first cylindrical portion 23 of the first unit 21 and the second cylindrical portion 24 of the second unit 22 are mutually connected with the filter portion 27 interposed therebetween.
  • the tube 40 is inserted into the first cylindrical portion 23 of the first unit 21 in a liquid-tight manner.
  • the tube 40 communicates with the inside of the liquid crystal container 10 (see FIG. 1) through the first cylindrical portion 23 and the second cylindrical portion 24.
  • the tube 40 inserted into the liquid crystal container 10 is periodically cleaned when the type of the liquid crystal material 30 is switched.
  • the liquid crystal material 30 stored in the liquid crystal container 10 may be mixed with a foreign material such as resin, fiber, or PVC (Polyvinyl Chloride). Further, when a new liquid crystal material 30 is replenished in the liquid crystal container 10, foreign matter may be mixed into the liquid crystal material 30 stored in the liquid crystal container 10.
  • the liquid crystal material 30 in the liquid crystal container 10 is filtered by the filter unit 27 when passing through the filter unit 27 (see FIG. 3).
  • the foreign matter mixed in the liquid crystal material 30 is removed (captured) by the filter unit 27.
  • the liquid crystal material 30 can be sucked into the tube 40 in a state in which foreign matters and the like are removed.
  • the liquid crystal material 30 is supplied to the diaphragm switch 42 through the inside of the tube 40.
  • the liquid crystal material 30 is supplied to the liquid crystal syringe 44 through the diaphragm switch 42.
  • the liquid crystal material 30 to which a predetermined pressure is applied by the liquid crystal syringe 44 is discharged from the liquid crystal nozzle 50 toward an external substrate (panel) or the like through the tube 46.
  • the filter unit 27 (see FIG. 3) of the filter unit 20 is immersed in the liquid crystal material 30.
  • the liquid crystal dropping device 100 does not cause air biting. As described above, the air biting causes a defect such as liquid crystal repelling in the liquid crystal material 30 discharged from the liquid crystal nozzle 50.
  • the liquid crystal material 30 can be dropped in a state in which the foreign matter in the liquid crystal material 30 is appropriately filtered without causing the liquid crystal material 30 to be dropped to bite air. By reducing the occurrence rate of panel defects, it becomes possible to improve the manufacturing efficiency of liquid crystal panel substrates and the like.
  • the first unit 21 and the second unit 22 are configured to be detachable from each other, so that the filter structure 25 can be easily replaced.
  • the cost required for replacement can be reduced by adopting a commonly used filter component 25 having a diameter of ⁇ 8 mm and a thickness of 0.1 mm to 0.2 mm, for example (so-called standard product). As a result, it may be intended to increase the frequency of exchanges. Further, according to the experimental results, it is possible to further prevent the occurrence of air biting by using the filter structure 25 having a thickness of 0.1 mm to 0.2 mm.
  • the liquid crystal syringe 44 that pressurizes the liquid crystal material 30 is composed of a system independent of the liquid crystal nozzle 50. .
  • the pressurizing member 240 that pressurizes the liquid crystal material 230 and the nozzle portion 250 exist in the same system.
  • the liquid crystal dropping apparatus 100 when the liquid crystal material 30 is pressurized, the liquid crystal nozzle 44 is hardly displaced due to the pressurization of the liquid crystal syringe 44.
  • the liquid crystal dropping device 100 can also improve the dropping accuracy of the liquid crystal material 30 as compared with the liquid crystal dropping device 200.
  • a member constituting the filter unit 27 is wound around the end of the tube 40.
  • the liquid crystal material 30 could be sucked up.
  • the removal rate of NR (Nitrile Rubber) foreign matter is 0.05%, and the removal rate of spot foreign matter is 0.00.
  • the generation suppression rate of 05% and micro defects was 0.05%.
  • the average pore diameter of the filter portion 27 is larger than 1.0 ⁇ m, the liquid crystal material 30 can be sucked up, but the removal rate of NR foreign matter, the removal rate of stain foreign matter, and the occurrence suppression rate of minute defects are predetermined. Below the reference value. Therefore, it can be seen that the average pore diameter of the filter portion 27 applied to the liquid crystal dropping device 100 is preferably 0.5 ⁇ m or more and 1.0 ⁇ m or less.
  • the filter portion 27 is configured to be detachable from the mesh portions 26 and 28 (filter jig portion). It is good (see arrow AR).
  • FIG. 6 is a cross-sectional view schematically showing the overall configuration of the liquid crystal dropping device 101 in this comparative example.
  • a filter unit 20A is used in the liquid crystal dropping device 101.
  • the filter unit 20A includes a cylindrical long filter part (not shown).
  • the filter unit 20 ⁇ / b> A is provided between the tube 40 and the tube 48 connected to the diaphragm switch 42.
  • the filter unit is provided inside the filter unit 20A.
  • this filter unit is not configured to be detachable from the filter unit 20A, it is necessary to replace the entire filter unit 20A, unlike the modification of the above-described embodiment.
  • FIG. 7 is a cross-sectional view schematically showing the overall configuration of the liquid crystal dropping device 102 in this comparative example.
  • a filter unit 20B is used in the liquid crystal dropping device 102.
  • the filter unit 20B incorporates a disk-shaped short filter part (not shown).
  • the filter unit 20 ⁇ / b> B is provided between the tube 40 and the tube 48 connected to the diaphragm switch 42.
  • the configuration of the liquid crystal dropping device 102 it is necessary to connect the tube 40 and the filter unit 20B at the connection portion 45. In the connection part 47, it is necessary to connect the tube 48 and the filter unit 20B. Compared to the case of obtaining the configuration of the liquid crystal dropping device 100 (see FIG. 1) in the above-described embodiment, more time, cost and labor are required to obtain the configuration of the liquid crystal dropping device 102.
  • the filter unit is provided inside the filter unit 20B.
  • the filter unit is not configured to be detachable from the filter unit 20B, it is necessary to replace the entire filter unit 20B, unlike the modification of the above-described embodiment.

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  • Liquid Crystal (AREA)

Abstract

L'invention concerne un appareil (100) de lâcher de cristaux liquides comportant un récipient (10) pour cristaux liquides servant à stocker un matériau (30) à cristaux liquides, une unité filtrante (20) immergée dans le matériau (30) à cristaux liquides et comprenant une partie filtrante, et une buse (50) pour cristaux liquides servant à évacuer du matériau (30) à cristaux liquides soutiré du récipient (10) pour cristaux liquides à travers la partie filtrante. L'appareil (100) de lâcher de cristaux liquides est capable de lâcher le matériau (30) à cristaux liquides dans des conditions où aucun air n'est entraîné dans le matériau (30) à cristaux liquides lâché, et tout corps étranger présent dans le matériau (30) à cristaux liquides est convenablement éliminé par filtration.
PCT/JP2012/065216 2011-06-21 2012-06-14 Appareil de lâcher de cristaux liquides WO2012176681A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-137411 2011-06-21
JP2011137411 2011-06-21

Publications (1)

Publication Number Publication Date
WO2012176681A1 true WO2012176681A1 (fr) 2012-12-27

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WO (1) WO2012176681A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104570508A (zh) * 2014-12-24 2015-04-29 深圳市华星光电技术有限公司 液晶滴注装置
US10046891B2 (en) 2014-02-20 2018-08-14 Sakai Display Products Corporation Lid and foreign body-trapping method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004361805A (ja) * 2003-06-06 2004-12-24 Seiko Epson Corp 液晶装置の製造方法、液晶装置、及び投射表示装置
JP2008304695A (ja) * 2007-06-07 2008-12-18 Dainippon Printing Co Ltd 強誘電性液晶用インクジェット装置
JP2009127657A (ja) * 2007-11-20 2009-06-11 Seiko Epson Corp コイルばね、流体機器におけるフィルタの取付け構造、圧力調整弁および機能液供給機構、並びに液滴吐出装置、電気光学装置の製造方法および電気光学装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004361805A (ja) * 2003-06-06 2004-12-24 Seiko Epson Corp 液晶装置の製造方法、液晶装置、及び投射表示装置
JP2008304695A (ja) * 2007-06-07 2008-12-18 Dainippon Printing Co Ltd 強誘電性液晶用インクジェット装置
JP2009127657A (ja) * 2007-11-20 2009-06-11 Seiko Epson Corp コイルばね、流体機器におけるフィルタの取付け構造、圧力調整弁および機能液供給機構、並びに液滴吐出装置、電気光学装置の製造方法および電気光学装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10046891B2 (en) 2014-02-20 2018-08-14 Sakai Display Products Corporation Lid and foreign body-trapping method
CN104570508A (zh) * 2014-12-24 2015-04-29 深圳市华星光电技术有限公司 液晶滴注装置
WO2016101353A1 (fr) * 2014-12-24 2016-06-30 深圳市华星光电技术有限公司 Dispositif d'instillation à cristaux liquides
CN104570508B (zh) * 2014-12-24 2017-10-13 深圳市华星光电技术有限公司 液晶滴注装置

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