KR20080082077A - Alignment layer coating device - Google Patents

Alignment layer coating device Download PDF

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KR20080082077A
KR20080082077A KR1020070022416A KR20070022416A KR20080082077A KR 20080082077 A KR20080082077 A KR 20080082077A KR 1020070022416 A KR1020070022416 A KR 1020070022416A KR 20070022416 A KR20070022416 A KR 20070022416A KR 20080082077 A KR20080082077 A KR 20080082077A
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roll
alignment film
printing apparatus
cleaning
anilox roll
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KR1020070022416A
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Korean (ko)
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곽수민
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엘지디스플레이 주식회사
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Publication of KR20080082077A publication Critical patent/KR20080082077A/en

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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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • 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
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
    • H01L21/67005—Apparatus not specifically provided for elsewhere
    • H01L21/67011—Apparatus for manufacture or treatment
    • H01L21/67017—Apparatus for fluid treatment
    • H01L21/67028—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
    • H01L21/6704—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing
    • H01L21/67051—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing using mainly spraying means, e.g. nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned
    • 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
    • G02F1/1316—Methods for cleaning the liquid crystal cells, or components thereof, during manufacture: Materials therefor

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Liquid Crystal (AREA)

Abstract

An alignment layer printing device is provided to remove a manual washing work by automating a washing process, thereby reducing manpower and accordingly reducing manufacturing costs. A discharge nozzle(50) discharges alignment material. A doctor roll(62) and an anilox roll(64) are engaged with each other in a lower part of the discharge nozzle and rotatably driven. A printing roll(66) is configured in a lower part of the doctor roll and the anilox roll. A support(70) is configured in a lower part of the printing roll. In the support, a substrate(90) is mounted to be horizontally driven. A washing plate(80) is horizontally driven and washes the surface of the anilox roll.

Description

배향막 인쇄장치{alignment layer coating device}Alignment layer coating device

도 1은 일반적인 롤 인쇄 방법을 통해 배향막을 도포하는 배향막 인쇄 장치의 구성을 개략적으로 도시한 단면도1 is a cross-sectional view schematically showing the configuration of an alignment film printing apparatus for applying an alignment film through a general roll printing method.

도 2는 도 1에 따른 배향막 인쇄장치의 세정 공정을 설명하기 위한 흐름도2 is a flowchart for explaining a cleaning process of the alignment film printing apparatus according to FIG. 1.

도 3은 본 발명에 따른 배향막 인쇄장치의 구성을 도시한 사시도Figure 3 is a perspective view showing the configuration of the alignment film printing apparatus according to the present invention

도 4는 도 3의 절단선 VI-VI에 따른 단면도4 is a cross-sectional view taken along the line VI-VI of FIG. 3.

도 5는 본 발명에 따른 배향막 인쇄장치의 세정 공정을 설명하기 위한 흐름도5 is a flowchart for explaining a cleaning process of the alignment film printing apparatus according to the present invention.

도 6a 및 6b는 각각 본 발명에 따른 배향막 인쇄장치의 세정판 이용방법을 설명하기 위한 도면 6A and 6B are views for explaining a cleaning plate using method of the alignment film printing apparatus according to the present invention, respectively.

<도면의 주요부분에 대한 간단한 설명><Brief description of the main parts of the drawing>

50 : 토출노즐 62 : 닥터롤50: discharge nozzle 62: doctor roll

64 : 아닐록스롤 66 : 인쇄롤64: anilox roll 66: printing roll

67 : 인쇄고무판 70 : 지지대67: rubber plate 70: support

80 : 세정판 82 : 합성수지판80 cleaning plate 82 synthetic resin plate

84 : 와이퍼 90 : 기판84: wiper 90: substrate

95 : 배향막95: alignment film

본 발명은 배향막 인쇄장치에 관한 것으로서, 특히 액정표시장치의 제조공정 중 배향막을 형성하는 장비에서의 세정 과정이 전과정 자동으로 수행되는 배향막 인쇄장치에 관한 것이다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alignment film printing apparatus, and more particularly, to an alignment film printing apparatus in which a cleaning process in equipment for forming an alignment film is automatically performed during the manufacturing process of a liquid crystal display.

일반적인 액정표시장치는 액정의 광학적 이방성과 분극성질을 이용하는 것으로, 액정은 분자구조가 가늘고 길며 배열에 방향성을 갖는 이방성과 전기장 내에 놓일 경우 그 크기에 따라 분자배열의 방향이 변화되는 분극성질을 띤다. 이에 액정표시장치는 액정층을 사이에 두고 서로 마주보는 면으로 각각 전계생성전극이 형성된 한 쌍의 투명절연기판으로 이루어진 액정패널을 필수적인 구성요소로 하며, 각 전계생성전극 사이의 전기장 변화를 통해서 액정분자의 배열방향을 인위적으로 조절하고 이때 변화되는 빛의 투과율을 이용하여 여러 가지 화상을 표시한다.A general liquid crystal display device uses the optical anisotropy and polarization property of the liquid crystal, and the liquid crystal has a polarization property in which the direction of the molecular array is changed according to its size when placed in an electric field with thin and long molecular structure and directional anisotropy. The liquid crystal display is an essential component of a liquid crystal panel composed of a pair of transparent insulating substrates, each having a liquid crystal layer interposed therebetween, and having a field generating electrode formed therebetween. Various images are displayed by artificially adjusting the arrangement direction of the molecules and using the light transmittance which is changed at this time.

따라서 상기 액정분자에 대한 제어는 액정표시장치에서의 화상표시품위를 안정화하는데 큰 영향을 미치게 된다. 이로 인하여, 액정분자의 초기배열을 고르게 하기 위해서 배향공정을 진행하게 되는데 이는, 상기 서로 마주보는 두 기판 사이 에 배향막 물질을 고른 두께로 형성하고, 상기 배향막을 경화시킨 후, 상기 경화된 배향막을 방향성을 갖도록 하기 위해 러빙포로 일정한 방향으로 마찰시켜 상기 배향막 내의 고분자 사슬을 일정방향으로 정렬시킴으로써 액정분자의 초기배열 상태를 고르게 한다. Therefore, the control of the liquid crystal molecules has a great influence on stabilizing the image display quality in the liquid crystal display device. As a result, an alignment process is performed to evenly arrange the initial alignment of the liquid crystal molecules. The alignment layer is formed to have an even thickness between the two substrates facing each other, and after curing the alignment layer, the cured alignment layer is oriented. By rubbing in a predetermined direction with a rubbing cloth in order to have a uniform alignment of the polymer chain in the alignment film in a predetermined direction to uniformly arrange the initial arrangement state of the liquid crystal molecules.

이러한 배향막 물질은 스핀(spin) 코팅, 슬릿(slit) 코팅, 롤(roll) 인쇄 방법, 잉크젯(inkjet) 코팅 방법을 사용하여 구성한다. 이 중, 상기 스핀 코팅 방법은 기판 상에 배향물질을 떨어트린 후, 기판을 고속 회전시킴으로써 상기 배향물질을 기판 상에 균일한 두께로 형성하며, 상기 슬릿 코팅 방법은 노즐을 통해 배향물질을 기판 상에 토출하여 기판 상에 배향막을 형성하는 방법이다. Such alignment film materials are constructed using spin coating, slit coating, roll printing method, inkjet coating method. Among these, the spin coating method drops the alignment material on the substrate, and then rotates the substrate at a high speed to form the alignment material on the substrate in a uniform thickness, and the slit coating method forms the alignment material on the substrate through a nozzle. It is a method of forming an oriented film on a board | substrate by ejecting into a film.

그러나 배향막은 그 두께를 최소화하여 액정셀의 전기적인 동작특성에 미치는 영향을 극소화해야 하기 때문에 배향막의 두께는 균일하게 도포할 수 있는 최소 두께로써 약 400 ~ 2000Å이 되어야 하나, 상기 스핀 코팅 방법은 크기가 큰 기판을 회전시키기 매우 어려운 단점이 있으며, 상기 슬릿 코팅 방법은 약 40 ~ 200㎛의 갭을 갖는 폭과 길이가 긴 슬릿 형태의 노즐로 상기 기판 상에 폴리아믹산, 가용성 폴리이미드 등의 배향막 물질을 토출함으로써 8000Å이하의 배향막을 형성하는데 적합하지 않다. However, since the alignment layer has to minimize its thickness to minimize the influence on the electrical operation characteristics of the liquid crystal cell, the thickness of the alignment layer should be about 400 ~ 2000Å as the minimum thickness that can be uniformly applied. It is very difficult to rotate a large substrate, and the slit coating method is a slit-shaped nozzle having a width and a length of about 40 to 200 μm, and an alignment layer material such as polyamic acid or soluble polyimide on the substrate. It is not suitable for forming an oriented film of 8000 Pa or less by discharging.

또한, 잉크젯 코팅 방법은 현재 개발단계에 있는 기술로서, 그 완성도가 낮아 많이 사용되지 않고 있는 실정이다. 따라서 최근에는 얇은 배향막 도포가 가능한 인쇄기법에 의한 롤(roll) 인쇄 방법을 통해 배향막을 도포하는 방법이 제안되고 있다. In addition, the inkjet coating method is a technology that is currently in the development stage, and its completion is low and is not used much. Therefore, in recent years, the method of apply | coating an alignment film through the roll printing method by the printing technique which can apply a thin alignment film is proposed.

도 1은 일반적인 롤 인쇄 방법을 통해 배향막을 도포하는 배향막 인쇄 장치의 구성을 개략적으로 도시한 단면도이다. 1 is a cross-sectional view schematically showing the configuration of an alignment film printing apparatus for applying an alignment film through a general roll printing method.

도시한 바와 같이, 롤 인쇄 방법은 지지대(1)와 닥터롤(doctor roll : 21), 아닐록스롤(anilox roll : 19), 인쇄롤(printing roll : 17) 및 인쇄고무판(23)(APR 고무판)으로 구성된 인쇄 장치를 사용한다. As shown, the roll printing method is a support (1) and doctor roll (21), anilox roll (19), printing roll (17) and the printing rubber plate 23 (APR rubber sheet) Use a printing device consisting of

상기 닥터롤(21)은 상기 아닐록스롤(19)과 맞물려 돌아가게 되어 있고, 상기 인쇄롤(17)은 상기 아닐록스롤(19)과 맞물려 돌아가게 구성되며, 상기 인쇄롤(17)의 한 면에는 임의의 패턴이 형성되어 있는 인쇄고무판(23)이 부착되어 있다.The doctor roll 21 is engaged with the anilox roll 19 and the printing roll 17 is configured to be engaged with the anilox roll 19, and one of the printing rolls 17 is rotated. The printing rubber plate 23 in which the arbitrary pattern is formed is attached to the surface.

이때, 상기 인쇄롤(17)은 배향막(15)을 형성할 기판(11)과 맞물려 회전하게 된다. In this case, the printing roll 17 rotates in engagement with the substrate 11 on which the alignment layer 15 is to be formed.

따라서 토출노즐(10)을 통해 상기 아닐록스롤(19)에 배향물질을 도포하게 되면, 상기 아닐록스롤(19)과 상기 닥터롤(21)에 의해 개여진 배향물질이 상기 인쇄롤(17)의 인쇄고무판(23)에 전사되고, 상기 인쇄고무판(23)에 전사된 배향물질은 상기 인쇄롤(17)이 돌아가면서 좌우 기동되는 상기 지지대(1)에 안착된 상기 기판(11) 상에 전사됨으로써, 상기 기판(11) 상에 배향막(15)이 형성된다.Therefore, when the alignment material is applied to the anilox roll 19 through the discharge nozzle 10, the alignment material opened by the anilox roll 19 and the doctor roll 21 is the printing roll 17. Transferred to the printed rubber plate 23, and the oriented material transferred to the printed rubber plate 23 is transferred onto the substrate 11 seated on the support 1 which is moved left and right as the printing roll 17 rotates. As a result, the alignment layer 15 is formed on the substrate 11.

상기한 동작을 통해 기판(11) 상에 배향막(15)을 형성하는 인쇄장치는 적절한 시기마다 상기 인쇄고무판(23) 및 상기 다수의 롤(17,19,21)을 세정하게 되는데, 이의 공정을 도 2의 흐름도를 참조하여 살펴보면 다음과 같다.The printing apparatus for forming the alignment layer 15 on the substrate 11 through the above operation is to clean the printing rubber plate 23 and the plurality of rolls (17, 19, 21) every appropriate time, the process thereof Referring to the flow chart of Figure 2 as follows.

먼저, 내부에 폴리이미드의 제거가 용이한 용액, 예를 들어 N-메틸피로리돈액(N-Methyl Pyrrolidone:이하 'NMP')이 충진된 세정통(이하 'NMP장비')을 장착한 다.(st1)First, a washing container (hereinafter, 'NMP equipment') filled with a solution that is easy to remove polyimide, for example, N-methyl pyrrolidone (NMP) is installed therein. (st1)

다음으로, 자동제어시스템을 조작하여 NMP장비로부터 공급되는 NMP를 상기 토출노즐(10)을 통해 상기 인쇄장치(특히, 상기 아닐록스롤(19)과 닥터롤(21))에 적정량 토출한다.(st2)Next, the NMP supplied from the NMP equipment is operated by the automatic control system to discharge the appropriate amount to the printing apparatus (particularly, the anilox roll 19 and the doctor roll 21) through the discharge nozzle 10. st2)

이에 작업자는 마른 헝겊 등을 이용한 와이퍼로 상기 아닐록스롤(19)과 닥터롤(21) 등을 수 분간에 걸쳐 닦아낸다. 이를 1차 세정이라 한다.(st3) Thus, the worker wipes the anilox roll 19 and the doctor roll 21 with a wiper using a dry cloth or the like for several minutes. This is called primary cleaning (st3).

다음으로 다시 한번 더 자동제어시스템을 조작하여 상기 토출노즐(10)을 통해 상기 인쇄장치(특히, 상기 아닐록스롤(19)과 닥터롤(21))에 NMP를 토출하고(st4), 역시 작업자는 마른 헝겊 등을 이용한 와이퍼로 상기 아닐록스롤(19)과 닥터롤(21) 등을 수 분간에 걸쳐 닦아낸다. 이를 2차 세정이라 한다.(st5)Next, by operating the automatic control system once more, NMP is discharged to the printing apparatus (particularly, the anilox roll 19 and the doctor roll 21) through the discharge nozzle 10 (st4), and also an operator Wipes the anilox roll 19 and the doctor roll 21 with a wiper using a dry cloth or the like for several minutes. This is called secondary cleaning (st5).

마지막으로, 자동제어시스템을 조작하여 상기 토출노즐(10)을 통해 휘발성이 우수한 세정용액, 예를 들어 IPA(Iso Propyl Alcohol), 아세톤, 메탄올 등을 분사하여 상기 인쇄장치(즉, 상기 아닐록스롤(19)과 닥터롤(21))를 닦아낸다.(st6) 이로써 상기 1,2차 세정과정의 진행에서 잔류하던 세정 전용용매(즉, NMP)는 휘발성 세정용액에 의해 증발하여 모두 제거된다. Finally, the automatic control system is operated to spray the cleaning solution having excellent volatility, for example, IPA (Iso Propyl Alcohol), acetone, methanol, etc., through the discharge nozzle 10 to operate the printing apparatus (ie, the anilox roll). (19) and the doctor roll (21) are wiped off. (St6) This removes all of the cleaning solvent (i.e., NMP) remaining in the first and second cleaning processes by evaporation with the volatile cleaning solution.

이러한 과정으로 진행되는 배향막 인쇄장치의 세정 공정은, NMP 토출 이후 와이퍼를 이용한 클리닝 작업에서 모두 작업자의 수작업을 요하게 된다. 즉, 상기 제3스텝(st3)과 제5스텝(st5)에서와 같이 일일이 작업자가 마른 헝겊 등을 이용하여 인쇄장치를 닦아내야 하는 불편이 있다. 또한 점차 대형화되는 액정표시패널의 추세에 따르면 상기 인쇄장치의 크기도 대형화되는 것이 당연하며, 이에 배향막 인 쇄장치의 세정을 위한 인력 역시 보충되어야 하기 때문에 인력 수급 및 수작업으로 인한 제조비용 상승과 공정성 저하 등의 문제점이 대두되고 있다. The cleaning process of the alignment film printing apparatus, which proceeds in such a process, requires manual labor for all cleaning operations using the wiper after NMP discharge. That is, as in the third step st3 and the fifth step st5, the worker has to inconvenience to wipe the printing apparatus by using a dry cloth. In addition, according to the trend of a liquid crystal display panel that is gradually increased in size, the size of the printing apparatus is also expected to increase in size, and thus manpower for cleaning the alignment film printing apparatus must also be replenished. Problems such as these are emerging.

본 발명은 상기와 같은 문제점을 해결하기 위해 안출된 것으로서, 배향막 인쇄장치의 세정을 전자동으로 수행하여 제조비용 저감 및 공정성을 향상시킬 수 있는 배향막 인쇄장치를 제공하는 것을 주된 목적으로 한다. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a main object of the present invention is to provide an alignment film printing apparatus capable of performing automatic cleaning of the alignment film printing apparatus to reduce manufacturing cost and improve processability.

상기와 같은 목적을 달성하기 위해 본 발명은, 배향물질을 토출하는 토출노즐과; 상기 토출노즐의 하부에서 서로 맞물려 회전 구동하는 닥터롤 및 아닐록스롤과; 상기 닥터롤 및 아닐록스롤 하부에 구성되는 인쇄롤과; 상기 인쇄롤 하부에 구성되며, 기판이 안착되어 수평 기동되는 지지대와; 수평 기동되며, 상기 아닐록스롤의 표면을 세정하는 세정판을 포함하는 배향막 인쇄장치를 제공한다.The present invention to achieve the above object, the discharge nozzle for discharging the alignment material; A doctor roll and anilox roll engaged with each other at a lower portion of the discharge nozzle to rotate; A printing roll configured under the doctor roll and anilox roll; A supporter formed below the printing roll, the substrate being mounted and horizontally driven; It provides a alignment film printing apparatus including a cleaning plate which is horizontally operated and cleans the surface of the anilox roll.

상기 배향막 인쇄장치에 있어서, 인쇄롤은 상기 아닐록스롤과 맞물려 회전 구동하는 것을 특징으로 한다.In the alignment film printing apparatus, the printing roll is rotatably driven in engagement with the anilox roll.

상기 배향막 인쇄장치에 있어서, 상기 세정판은 합성수지판과 와이퍼가 결합된 것을 특징으로 한다.In the alignment film printing apparatus, the cleaning plate is characterized in that the synthetic resin plate and the wiper are combined.

상기 배향막 인쇄장치에 있어서, 상기 합성수지판은 고무판인 것을 특징으로 한다.In the alignment film printing apparatus, the synthetic resin plate is a rubber plate.

상기 배향막 인쇄장치에 있어서, 상기 와이퍼는 직물 소재를 채택하는 것을 특징으로 한다.In the alignment film printing apparatus, the wiper is characterized by adopting a textile material.

상기 배향막 인쇄장치에 있어서, 상기 세정판은 양 단부의 중심부를 서로 연결하는 방향을 회전축으로 하여 회전되는 것을 특징으로 한다.In the alignment film printing apparatus, the cleaning plate is rotated by using a rotation axis as a direction connecting the central portions of both ends to each other.

상기 배향막 인쇄장치에 있어서, 상기 세정판은 로봇팔에 연결되어 수평기동 및 회전 기동되는 것을 특징으로 한다. In the alignment film printing apparatus, the cleaning plate is connected to the robot arm is characterized in that the horizontal start and rotationally activated.

이하 첨부된 도면을 참조하여 본 발명에 대해 상세하게 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 발명에 따른 배향막 인쇄장치의 구성을 도시한 사시도이고, 도 4는 도 3의 절단선 VI-VI에 따른 단면도로서, 본 발명에 따른 배향막 인쇄장치는 토출노즐(50)과, 다수의 롤(62,64,66)과, 지지대(70) 및 세정판(80)으로 구성된다.Figure 3 is a perspective view showing the configuration of the alignment film printing apparatus according to the present invention, Figure 4 is a cross-sectional view along the cutting line VI-VI of Figure 3, the alignment film printing apparatus according to the present invention is a discharge nozzle 50, and Rolls 62, 64, 66, a support 70, and a cleaning plate 80.

상기 토출노즐(50)은 폴리아믹산, 가용성 폴리이미드 등의 배향막 물질을 토출하는 노즐(nozzle)로서, 상기 다수의 롤(62,64,66) 상부에 구성된다.The discharge nozzle 50 is a nozzle for discharging alignment layer materials such as polyamic acid and soluble polyimide, and is disposed on the plurality of rolls 62, 64, and 66.

상기 다수의 롤(62,64,66)은 각각 닥터롤(62), 아닐록스롤(64), 인쇄롤(66)이며, 상기 닥터롤(62)과 아닐록스롤(64)은 서로 맞물려 돌아가며, 또한 상기 아닐록스롤(64)과 인쇄롤(66)이 서로 맞물려 돌아감으로써 상기 배향막 물질을 상기 인쇄롤(66)에 전사한다. The plurality of rolls 62, 64, and 66 are doctor rolls 62, anilox rolls 64, and printing rolls 66, respectively, and the doctor rolls 62 and anilox rolls 64 interlock with each other. In addition, the anilox roll 64 and the printing roll 66 are engaged with each other to transfer the alignment film material to the printing roll 66.

또한 상기 인쇄롤(66)은 외면에 배향 패턴이 인쇄된 인쇄고무판(APR 고무판)이 부착되어 있으며, 상기 아닐록스롤(64)로부터 전사된 배향막 물질을 기판(90) 상에 인쇄하여 배향막(95)을 형성한다.In addition, the printing roll 66 is attached to a printed rubber plate (APR rubber plate) is printed on the outer surface, the alignment pattern, the alignment film material transferred from the anilox roll 64 is printed on the substrate 90 by the alignment film (95) ).

상기 지지대(70)는 액정표시패널 등의 기판(90)이 안착되며, 상기 인쇄 롤(66)의 회전속도에 동기되는 속도로 수평 기동된다.The support 70 is mounted on a substrate 90 such as a liquid crystal display panel, and is horizontally activated at a speed synchronized with the rotational speed of the printing roll 66.

상기 세정판(80)은 로봇팔(미도시함) 또는 기동되는 지그(jig)(미도시함)에 의해 수평 기동되며 합성수지판(82)과 와이퍼(84)가 결합된 형태로써, 배향막 인쇄장치의 세정 공정시 상기 아닐록스롤(64)에 접촉되게 기동시켜 상기 아닐록스롤(64)을 세정하기 위한 구성이다. The cleaning plate 80 is horizontally activated by a robot arm (not shown) or a jig (not shown) to be activated, and the synthetic resin plate 82 and the wiper 84 are combined to form an alignment film printing apparatus. It is a structure for cleaning the said anilox roll 64 by starting it to contact the said anilox roll 64 at the time of the washing | cleaning process of the process.

이에 상기 세정판(80)을 구성하는 합성수지판(82)은 고무 소재이고, 상기 와이퍼(84)는 마른 헝겊과 같은 직물 소재로 구성된다. 이때 상기 와이퍼(84) 부분은 내부에 프레임이 존재하고, 상기 프레임 외부를 헝겊 등의 직물로 감싼 형태로 구성될 수 있다. The synthetic resin plate 82 constituting the cleaning plate 80 is a rubber material, and the wiper 84 is made of a fabric material such as a dry cloth. In this case, the wiper 84 may have a frame therein, and may have a form in which the outside of the frame is wrapped with a cloth such as a cloth.

아울러, 상기 로봇팔 또는 기동되는 지그(jig)와 연결할 때, 상기 세정판(80)의 양 단부의 중심부를 서로 연결하는 방향을 회전축 방향으로 하여 회전되도록 연결함으로써 상기 합성수지판(82)에 의한 1차 세정 및 상기 와이퍼(84)에 의한 2차 세정이 교대로 수행될 수 있도록 구성된다. In addition, when connecting with the robot arm or the jig (actuated jig), 1 by the synthetic resin plate 82 by connecting so as to rotate in the direction of the rotation axis direction connecting the center of the two ends of the cleaning plate 80 with each other. The secondary cleaning and the secondary cleaning by the wiper 84 can be configured to be performed alternately.

상기와 같은 구성에 따른 본 발명에 따른 배향막 인쇄장치의 세정 공정을 도 5의 흐름도를 참조하여 설명하면 다음과 같다. The cleaning process of the alignment film printing apparatus according to the present invention having the above configuration will be described with reference to the flowchart of FIG. 5.

먼저, 내부에 폴리이미드의 제거가 용이한 용액, 예를 들어 N-메틸피로리돈액(N-Methyl Pyrrolidone:이하 'NMP')이 충진된 세정통(이하 'NMP장비')을 장착한다.(st11)First, a washing container filled with a solution that is easy to remove polyimide, for example, N-Methyl Pyrrolidone (NMP) (hereinafter referred to as 'NMP equipment') is installed. st11)

다음으로, 자동제어시스템을 조작하여 NMP장비로부터 공급되는 NMP를 상기 토출노즐(50)을 통해 상기 인쇄장치(특히, 상기 아닐록스롤(64)과 닥터롤(62))에 적정량 토출한다.(st12)Next, by operating an automatic control system, the NMP supplied from the NMP equipment is discharged to the printing apparatus (particularly, the anilox roll 64 and the doctor roll 62) through the discharge nozzle 50. st12)

이후 로봇팔 등에 연결되어 자동제어되는 상기 세정판(80)을 기동한 후 상기 아닐록스롤(64)을 세정하는데, 도 6a와 같이, 먼저 상기 세정판(80)의 합성수지판(82)이 상기 아닐록스롤(64)의 표면에 실질적으로 접촉되게끔 로봇팔(또는 지그)(100)을 기동시킨 후 상기 아닐록스롤(64)을 회전시킨다. 상기 아닐록스롤(64)이 회전됨에 따라 상기 아닐록스롤(64)의 표면에 잔류하는 배향막 물질 및 NMP는 상기 합성수지판(82)에 의해 제거된다. 이후 도 6b와 같이, 상기 세정판(80)을 회전시키고 로봇팔(또는 지그)(100)을 이용하여 상기 와이퍼(84)가 상기 아닐록스롤(64) 표면에 실직적으로 접촉되게끔 기동시킨 후 다시 상기 아닐록스롤(64)을 회전시키면서 상기 아닐록스롤(64)의 표면을 닦는다.(st13) 이로써 상기 아닐록스롤(64)의 1차 세정이 자동으로 수행된다. Thereafter, the cleaning plate 80 connected to the robot arm or the like is automatically started to clean the anilox roll 64. As shown in FIG. 6A, the synthetic resin plate 82 of the cleaning plate 80 is After the robot arm (or jig) 100 is activated to substantially contact the surface of the anilox roll 64, the anilox roll 64 is rotated. As the anilox roll 64 is rotated, the alignment film material and NMP remaining on the surface of the anilox roll 64 are removed by the synthetic resin plate 82. Thereafter, as shown in FIG. 6B, the cleaning plate 80 is rotated, and the robot arm (or jig) 100 is used to start the wiper 84 to make a physical contact with the surface of the anilox roll 64. After that, the surface of the anilox roll 64 is wiped while rotating the anilox roll 64 (st13). Thus, the first cleaning of the anilox roll 64 is automatically performed.

다음으로 다시 한번 더 자동제어시스템을 조작하여 상기 토출노즐(50)을 통해 상기 인쇄장치(특히, 상기 아닐록스롤(64)과 닥터롤(62))에 NMP를 토출하고(st14), 역시 로봇팔 등에 연결되어 자동제어되는 상기 세정판(80)을 이용하여 상기 1차 세정에서와 같이 상기 합성수지판(82)과 와이퍼(84)의 교대 세정을 통해 상기 아닐록스롤(64)을 세정한다. 이때 상기 세정판(80)은 상기 1차 세정(즉, st13) 후 새것으로 교체하여 2차 세정에 임하는 것이 바람직하다. 이에 상기 아닐록스롤(64)의 2차 세정이 자동으로 수행된다.(st15)Next, by operating the automatic control system once more, NMP is discharged to the printing apparatus (particularly, the anilox roll 64 and the doctor roll 62) through the discharge nozzle 50 (st14), and also the robot. The anilox roll 64 is cleaned by alternately cleaning the synthetic resin plate 82 and the wiper 84 as in the first cleaning using the cleaning plate 80 which is automatically controlled by being connected to an arm or the like. At this time, the cleaning plate 80 is preferably replaced by a new one after the first cleaning (that is, st13) to the second cleaning. Accordingly, the secondary cleaning of the anilox roll 64 is automatically performed. (St15)

마지막으로, 자동제어시스템을 조작하여 상기 토출노즐(50)을 통해 휘발성이 우수한 세정용액, 예를 들어 IPA(Iso Propyl Alcohol), 아세톤, 메탄올 등을 분사 하여 상기 인쇄장치(즉, 상기 아닐록스롤(64)과 닥터롤(62))를 닦아낸다.(st16) 이로써 상기 1,2차 세정과정의 진행에서 잔류하던 세정 전용용매(즉, NMP)는 휘발성 세정용액에 의해 증발하여 모두 제거된다. Finally, the printing apparatus (ie, the anilox roll) is sprayed by operating an automatic control system by spraying a cleaning solution having excellent volatility, for example, IPA (Iso Propyl Alcohol), acetone, methanol, etc., through the discharge nozzle 50. (64) and the doctor roll (62) are wiped off. (St16) Thus, all of the cleaning solvents (ie, NMP) remaining in the first and second cleaning processes are evaporated and removed by the volatile cleaning solution.

이러한 과정을 수행하는 본 발명에 따른 배향막 인쇄장치의 세정 공정은, NMP 토출 이후 세정판(80)을 통한 배향막 인쇄장치의 세정 작업이 모두 자동으로 수행된다. 즉, 종래기술에서 설명한 제3스텝(st3)과 제5스텝(st5)에서와 같이 일일이 작업자가 마른 헝겊 등을 이용하여 인쇄장치를 닦아내야 하는 불편이 없으며, 또한 배향막 인쇄장치의 세정을 위한 인력이 불필요하여 제조비용의 저감 및 공정성 향상의 장점을 제공한다. In the cleaning process of the alignment film printing apparatus according to the present invention performing such a process, all the cleaning operations of the alignment film printing apparatus through the cleaning plate 80 are automatically performed after NMP discharge. That is, as in the third step st3 and the fifth step st5 described in the prior art, there is no inconvenience that the worker has to wipe the printing device by using a dry cloth or the like, and there is no manpower for cleaning the alignment film printing device. This eliminates the need for manufacturing cost and improves processability.

상기와 같이 설명한 본 발명에 따른 배향막 인쇄장치는, 배향막 인쇄장치의 세정공정을 전자동화 할 수 있어 세정의 수작업이 없어 인력의 저감 및 이에 따른 제조비용의 저감이 수반되며, 더불어 전자동화 공정진행에 따른 공정성의 향상 효과도 제공한다. As described above, the alignment film printing apparatus according to the present invention can fully automate the cleaning process of the alignment film printing apparatus, and thus, there is no manual work of cleaning, which leads to a reduction in manpower and thus a reduction in manufacturing cost. It also provides the effect of improving fairness.

Claims (7)

배향물질을 토출하는 토출노즐과;A discharge nozzle for discharging the alignment material; 상기 토출노즐의 하부에서 서로 맞물려 회전 구동하는 닥터롤 및 아닐록스롤과;A doctor roll and anilox roll engaged with each other at a lower portion of the discharge nozzle to rotate; 상기 닥터롤 및 아닐록스롤 하부에 구성되는 인쇄롤과;A printing roll configured under the doctor roll and anilox roll; 상기 인쇄롤 하부에 구성되며, 기판이 안착되어 수평 기동되는 지지대와;A supporter formed below the printing roll, the substrate being mounted and horizontally driven; 수평 기동되며, 상기 아닐록스롤의 표면을 세정하는 세정판Horizontally operated cleaning plate for cleaning the surface of the anilox roll 을 포함하는 배향막 인쇄장치Alignment film printing apparatus comprising a 청구항 제 1 항에 있어서,The method according to claim 1, 인쇄롤은 상기 아닐록스롤과 맞물려 회전 구동하는 것을 특징으로 하는 배향막 인쇄장치The printing roll is aligned with the anilox roll to drive the alignment film printing, characterized in that 청구항 제 1 항에 있어서,The method according to claim 1, 상기 세정판은 합성수지판과 와이퍼가 결합된 것을 특징으로 하는 배향막 인쇄장치The cleaning plate is an alignment film printing apparatus, characterized in that the synthetic resin plate and the wiper is combined 청구항 제 3 항에 있어서,The method according to claim 3, 상기 합성수지판은 고무판인 것을 특징으로 하는 배향막 인쇄장치The synthetic resin plate is an alignment film printing apparatus, characterized in that the rubber plate 청구항 제 3 항에 있어서,The method according to claim 3, 상기 와이퍼는 직물 소재를 채택하는 것을 특징으로 하는 배향막 인쇄장치The wiper is an alignment film printing apparatus, characterized in that for adopting a fabric material 청구항 제 1 항에 있어서,The method according to claim 1, 상기 세정판은 양 단부의 중심부를 서로 연결하는 방향을 회전축으로 하여 회전되는 것을 특징으로 하는 배향막 인쇄장치The cleaning plate is an orientation film printing apparatus, characterized in that the rotation axis is rotated in a direction connecting the central portion of both ends with each other 청구항 제 1 항에 있어서,The method according to claim 1, 상기 세정판은 로봇팔에 연결되어 수평기동 및 회전 기동되는 것을 특징으로 하는 배향막 인쇄장치The cleaning plate is connected to the robot arm alignment film printing apparatus, characterized in that the horizontal start and rotationally activated
KR1020070022416A 2007-03-07 2007-03-07 Alignment layer coating device KR20080082077A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9678385B2 (en) 2015-04-29 2017-06-13 Samsung Display Co., Ltd. Apparatus for manufacturing alignment layer, and method of manufacturing liquid crystal display device by using the same
CN108227310A (en) * 2018-02-09 2018-06-29 信利（惠州）智能显示有限公司 Method and device, liquid crystal display device and the substrate of friction matching
CN108983502A (en) * 2018-09-27 2018-12-11 武汉华星光电技术有限公司 Alignment Coating Equipment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9678385B2 (en) 2015-04-29 2017-06-13 Samsung Display Co., Ltd. Apparatus for manufacturing alignment layer, and method of manufacturing liquid crystal display device by using the same
CN108227310A (en) * 2018-02-09 2018-06-29 信利（惠州）智能显示有限公司 Method and device, liquid crystal display device and the substrate of friction matching
CN108983502A (en) * 2018-09-27 2018-12-11 武汉华星光电技术有限公司 Alignment Coating Equipment
WO2020062836A1 (en) * 2018-09-27 2020-04-02 武汉华星光电技术有限公司 Alignment film coating device

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