KR20110130064A - Method for preparing liquid crysral display - Google Patents
Method for preparing liquid crysral display Download PDFInfo
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- KR20110130064A KR20110130064A KR1020100049502A KR20100049502A KR20110130064A KR 20110130064 A KR20110130064 A KR 20110130064A KR 1020100049502 A KR1020100049502 A KR 1020100049502A KR 20100049502 A KR20100049502 A KR 20100049502A KR 20110130064 A KR20110130064 A KR 20110130064A
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
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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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133322—Mechanical guidance or alignment of LCD panel support components
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Abstract
Description
본 발명은 초기 설계된 위치에 접합될 수 있고, 접합 오류로 인한 불량 제품의 발생을 감소시킬 수 있는 액정표시장치의 제조방법에 관한 것이다.
The present invention relates to a method of manufacturing a liquid crystal display device which can be bonded to an initially designed position and can reduce the occurrence of defective products due to a bonding error.
액정표시장치는 기술집약적이고 부가가치가 높은 차세대 첨단 디스플레이 소자이다. 이러한 액정표시장치는 액정패널과, 액정패널의 상하판에 편광판이 접합되어 이루어진다.Liquid crystal displays are the next generation of advanced technology with high technology and high added value. In such a liquid crystal display device, a polarizing plate is bonded to a liquid crystal panel and upper and lower plates of the liquid crystal panel.
편광판은 편광자 이외에 위상차 필름, 패턴 리타더 및 보호필름 등의 광학부재를 포함한다. 광학부재는 통상 액정패널의 특성을 고려하여 이들의 광학특성을 설계한다. 그러나 광학부재와 액정패널은 접합 시 오차로 목적으로 하는 광학특성을 나타낼 수 없거나 불량품이 발생하는 문제가 있었다.The polarizing plate includes optical members such as a retardation film, a pattern retarder and a protective film in addition to the polarizer. Optical members usually design their optical characteristics in consideration of the characteristics of the liquid crystal panel. However, there is a problem that the optical member and the liquid crystal panel cannot exhibit the intended optical characteristics due to an error in bonding or a defective product is generated.
특히 패턴 리타더는 접합 시 발생되는 작은 오차에도 입체 화상을 구현하기 힘든 문제가 있다.In particular, the pattern retarder has a problem that it is difficult to realize a stereoscopic image even with a small error generated during bonding.
광학부재와 액정패널은 종래에 서로 모서리를 맞추어 액정패널의 상판 또는 하판에 순차적으로 접합하거나, 상판 및 하판에 동시에 접합하였다.The optical member and the liquid crystal panel are conventionally bonded to the upper or lower plate of the liquid crystal panel by aligning edges with each other, or simultaneously to the upper and lower plates.
그러나 모서리만을 맞추게 되면 광학부재의 광학특성을 나타내는 영역이 초기 설계된 액정패널의 위치에 접합되지 못하거나, 접합 공정의 수행 시 접합수단 또는 이동수단에 의해 오차가 발생되어 액정표시장치의 불량을 초래하게 되는 문제가 있다.
However, if only the edges are matched, an area showing the optical characteristics of the optical member may not be bonded to the position of the initially designed liquid crystal panel, or an error may be caused by the bonding means or the moving means when performing the bonding process, resulting in a defect of the liquid crystal display device. There is a problem.
본 발명은 광학부재와 액정패널의 접합 정밀도를 향상시킬 수 있는 액정표시장치의 제조방법을 제공하는데 그 목적이 있다.
It is an object of the present invention to provide a method for manufacturing a liquid crystal display device capable of improving the bonding accuracy of an optical member and a liquid crystal panel.
1. 얼라인 마크가 형성된 광학부재를 흡착 드럼에 의해 이송시켜 상기 광학부재의 얼라인 마크가 그와 대응되는 액정패널 상의 얼라인 마크 상에 정렬되도록 접합하는 것을 포함하는 액정표시장치의 제조방법.1. A manufacturing method of a liquid crystal display device comprising transferring an optical member having an alignment mark formed by an adsorption drum to bond the alignment mark of the optical member with the alignment mark on the liquid crystal panel corresponding thereto.
2. 위 1에 있어서, 상기 광학부재를 흡착 드럼에 흡착시키기 전에 상기 광학부재의 얼라인 마크들이 이루는 선과 상기 흡착 드럼 상의 얼라인 마크들이 이루는 선이 서로 평행하도록 상기 광학부재를 정렬하는 것을 포함하는 액정표시장치의 제조방법.2. The method of 1 above, wherein the optical member is aligned with the line formed by the alignment marks of the optical member and the line formed by the alignment marks on the adsorption drum before the optical member is adsorbed to the adsorption drum. Method of manufacturing a liquid crystal display device.
3. 위 1에 있어서, 상기 광학부재가 흡착 드럼에 흡착된 상태에서 상기 액정패널의 접합 스테이지 상에 형성된 얼라인 마크와 상기 광학부재의 얼라인 마크의 위치 정보를 비교하여 드럼의 회전각도를 보정하는 것을 포함하는 액정표시장치의 제조방법.3. In the above 1, the rotation angle of the drum is corrected by comparing the alignment information of the alignment mark and the alignment mark formed on the bonding stage of the liquid crystal panel in the state where the optical member is adsorbed on the adsorption drum Method of manufacturing a liquid crystal display device comprising the.
4. 위 1에 있어서, 상기 광학부재의 얼라인 마크의 초기 위치 정보를 바탕으로 상기 흡착 드럼에 흡착된 상기 광학부재가 그에 대응되는 액정패널의 얼라인 마크 상에 정렬되기 전에 상기 액정패널의 접합 스테이지의 얼라인 마크 위치를 보정하는 것을 포함하는 액정표시장치의 제조방법.4. In the above 1, the bonding of the liquid crystal panel before the optical member adsorbed on the adsorption drum based on the initial position information of the alignment mark of the optical member is aligned on the alignment mark of the corresponding liquid crystal panel A method of manufacturing a liquid crystal display device comprising correcting the alignment mark position of a stage.
5. 위 4에 있어서, 광학부재는 패턴 리타더인 액정표시장치의 제조방법.5. The method according to the above 4, wherein the optical member is a pattern retarder.
6. 위 1에 있어서, 광학부재의 얼라인 마크와 그에 대응되는 액정패널의 얼라인 마크 사이의 오차는 ±5㎛ 이내인 액정표시장치의 제조방법.6. In the above 1, the error between the alignment mark of the optical member and the alignment mark of the liquid crystal panel corresponding thereto is within ± 5㎛ manufacturing method of the liquid crystal display device.
7. 얼라인 마크가 형성된 광학부재를 권출하는 권출부; 권출된 광학부재의 얼라인 마크 위치 좌표를 측정하는 얼라인 마크 좌표 측정부; 좌표가 측정된 광학부재를 흡착 드럼의 회전에 의해 흡착하는 광학부재 흡착부; 및 광학부재의 얼라인 마크 좌표와, 이에 대응되는 액정패널의 얼라인 마크 위치 좌표를 서로 비교하여 대응되는 얼라인 마크의 위치가 정렬되도록 흡착 드럼으로 접합하는 접합부가 포함된 접합장치.7. Unwinding unit for unwinding the optical member on which the alignment mark is formed; An alignment mark coordinate measuring unit for measuring alignment mark position coordinates of the unwinded optical member; An optical member adsorption unit for adsorbing the optical member whose coordinates are measured by the rotation of the adsorption drum; And a bonding unit for bonding the alignment mark coordinates of the optical member and the alignment mark position coordinates of the liquid crystal panel to be bonded to each other by a suction drum to align the corresponding alignment marks.
8. 청구항 7에 있어서, 접합부는 광학부재의 얼라인 마크가 그에 대응되는 액정패널의 얼라인 마크상에 정렬되도록 좌표를 연산 보정하는 보정부가 추가로 포함된 접합장치.
8. The bonding apparatus according to claim 7, wherein the bonding unit further includes a correction unit for calculating and correcting coordinates so that the alignment mark of the optical member is aligned on the alignment mark of the liquid crystal panel corresponding thereto.
본 발명의 광학부재와 액정패널의 접합방법은 광학부재의 얼라인 마크와 그에 대응되는 액정패널의 얼라인 마크 사이의 오차(접합 정밀도)가 ±5㎛ 이내여서 초기 설계된 위치에 접합되므로 목적으로 하는 광학특성을 나타낼 수 있다.The bonding method of the optical member and the liquid crystal panel of the present invention is because the error (bonding accuracy) between the alignment mark of the optical member and the alignment mark of the liquid crystal panel corresponding thereto is within ± 5 μm and is bonded to the initial designed position. Optical characteristics can be exhibited.
본 발명의 광학부재와 액정패널의 접합방법은 대응되는 얼라인 마크의 위치 좌표를 이용하므로 광학부재의 광학특성을 갖는 영역을 자유롭게 형성할 수 있다. The bonding method of the optical member and the liquid crystal panel of the present invention uses the position coordinates of the corresponding alignment mark, so that the region having the optical characteristics of the optical member can be freely formed.
본 발명의 광학부재와 액정패널의 접합방법은 접합 정밀도가 높고, 주변환경(접착 수단) 등에 의한 오차 발생 요인이 감소되어 액정표시장치의 불량률을 저하시킬 있다.
The bonding method of the optical member and the liquid crystal panel of the present invention has a high bonding accuracy, and reduces an error occurrence factor due to the surrounding environment (adhesive means) and the like, thereby lowering the defective rate of the liquid crystal display device.
도 1은 본 발명에 따른 액정표시장치의 제조방법을 간략하게 도식화한 것이고,
도 2는 본 발명에 따른 일례의 액정표시장치의 제조방법을 나타낸 것이다.1 is a schematic diagram illustrating a manufacturing method of a liquid crystal display device according to the present invention;
2 illustrates a method of manufacturing an exemplary liquid crystal display device according to the present invention.
본 발명은 초기 설계된 위치에 접합될 수 있고, 접합 오류로 인한 불량 제품의 발생을 감소시킬 수 있는 액정표시장치의 제조방법에 관한 것이다.
The present invention relates to a method of manufacturing a liquid crystal display device which can be bonded to an initially designed position and can reduce the occurrence of defective products due to a bonding error.
이하 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.
본 발명에 따른 액정표시장치의 제조방법은 얼라인 마크가 형성된 광학부재를 흡착 드럼에 의해 이송시켜 상기 광학부재의 얼라인 마크가 그와 대응되는 액정패널 상의 얼라인 마크 상에 정렬되도록 접합하는 것을 포함한다.The manufacturing method of the liquid crystal display device according to the present invention transfers the optical member on which the alignment mark is formed by an adsorption drum to bond the alignment mark of the optical member to be aligned on the alignment mark on the liquid crystal panel corresponding thereto. Include.
본 발명의 액정표시장치의 제조방법은 도 1과 같이, 얼라인 마크가 형성된 광학부재의 권출(S1)단계, 광학부재의 얼라인 마크 위치 좌표 측정(S2)단계, 흡착 드럼에 광학부재 흡착(S3)단계 및 대응되는 각 얼라인 마크의 위치를 정렬하여 광학부재와 액정패널 접합(S4)단계로 구성된다.In the manufacturing method of the liquid crystal display device of the present invention, as shown in Fig. 1, the step of unwinding the optical member on which the alignment mark is formed (S1), measuring the alignment mark position coordinates of the optical member (S2), and adsorbing the optical member to the adsorption drum ( Step S3) and the alignment of the corresponding alignment marks are composed of the optical member and the liquid crystal panel bonding (S4) step.
상기 접합방법은 얼라인 마크가 형성된 광학부재를 권출하는 권출부; 광학부재의 얼라인 마크 위치 좌표를 측정하는 얼라인 마크 좌표 측정부; 좌표가 측정된 광학부재를 흡착 드럼의 회전에 의해 흡착하는 광학부재 흡착부; 및 광학부재의 얼라인 마크 좌표와, 이에 대응되는 액정패널의 얼라인 마크 위치 좌표를 서로 비교하여 대응되는 얼라인 마크의 위치가 정렬되도록 흡착 드럼으로 접합하는 접합부가 포함된 광학부재와 액정패널의 접합장치에서 구현된다.The bonding method may include: a winding-up unit which unwinds an optical member on which an alignment mark is formed; An alignment mark coordinate measuring unit for measuring alignment mark position coordinates of the optical member; An optical member adsorption unit for adsorbing the optical member whose coordinates are measured by the rotation of the adsorption drum; Comparing the alignment mark coordinates of the optical member and the alignment mark position coordinates of the liquid crystal panel with each other, and a bonding part bonded to the adsorption drum so that the corresponding alignment mark positions are aligned. It is implemented in the bonding device.
접합장치의 접합부는 광학부재의 얼라인 마크가 그에 대응되는 액정패널의 얼라인 마크상에 정렬되도록 좌표를 연산 보정하는 보정부가 포함될 수 있다.
The bonding portion of the bonding apparatus may include a correction unit for calculating and correcting coordinates so that the alignment mark of the optical member is aligned on the alignment mark of the liquid crystal panel corresponding thereto.
본 발명의 액정표시장치의 제조방법을 단계별로 상세하게 설명한다.The manufacturing method of the liquid crystal display device of the present invention will be described in detail step by step.
얼라인 마크가 형성된 광학부재를 권출(S1)한다.The optical member on which the alignment mark is formed is unwound (S1).
광학부재는 통상 편광판에 구비되는 것으로, 일례로 편광자, 보호필름, 반사방지필름, 이형필름, 위상차 필름 및 패턴 리타더 등이 있다. 이중 액정패널과의 접합 위치에 따라 광학특성의 변화가 큰 위상차 필름 및 패턴 리타더를 사용하는 것이 바람직하다.The optical member is usually provided in a polarizing plate, and examples thereof include a polarizer, a protective film, an antireflection film, a release film, a retardation film, a pattern retarder, and the like. It is preferable to use a retardation film and a pattern retarder having a large change in optical characteristics depending on the bonding position with the double liquid crystal panel.
얼라인 마크는 초기 설계된 위치에 정확하게 접합시키기 위한 합착 키 역할을 한다. 얼라인 마크는 초기에 설계된 광학특성을 효과적으로 구현할 수 있도록 형성한다. 이때, 광학부재의 얼라인 마크는 액정패널의 상하 기판 접합 시 사용되는 액정패널의 얼라인 마크와 위치 정렬이 용이하도록 광학부재에 형성하는 것이 바람직하다.The alignment mark serves as a cementation key for precisely joining the initially designed position. The alignment mark is formed to effectively implement the optical characteristics designed initially. At this time, the alignment mark of the optical member is preferably formed on the optical member so as to facilitate alignment with the alignment mark of the liquid crystal panel used when bonding the upper and lower substrates of the liquid crystal panel.
얼라인 마크의 형성방법은 특별히 한정하지 않으며, 일례로 얼라인 마크부분과 그 외 부분의 액정 배향방향에 의해 구분할 수 있다.The formation method of the alignment mark is not specifically limited, For example, it can classify by the alignment mark part and the liquid crystal aligning direction of another part.
얼라인 마크는 액정표시장치를 제조한 후 시인에 의해서 감지되지 않는 위치에 형성하는 것이 바람직하다.After the alignment mark is manufactured, the alignment mark may be formed at a position that is not detected by the viewer.
얼라인 마크의 형태는 특별히 한정하지는 않으나, 일례로 액정패널의 상판 및 하판 기판의 합착에 사용되는 마크와 동일한 형태로 제조하는 것이 바람직하다.Although the form of an alignment mark is not specifically limited, For example, it is preferable to manufacture in the form same as the mark used for bonding of the upper board and lower board of a liquid crystal panel.
얼라인 마크는 하나 이상이 형성될 수 있으며, 바람직하기로는 2개 이상 배열되는 것이 좋다. 또한, 얼라인 마크는 광학부재의 일면에 2개 이상이 배치되는 것이 바람직하다.One or more alignment marks may be formed, and preferably two or more alignment marks are arranged. In addition, two or more alignment marks may be disposed on one surface of the optical member.
얼라인 마크가 형성된 광학부재는 낱장의 필름 또는 롤로부터 권출되는 연속상의 필름일 수 있다. 권출은 롤 형태로 권취된 고분자 기재필름을 풀어 주는 권출부에서 수행되며, 권출부는 기재필름의 장력유지 및 이송을 위한 다수개의 가이드롤 또는 닙롤로 구성되고, 기재필름의 이송량을 제어하는 어큐뮬레이터(accumulator)도 포함할 수 있다.The optical member on which the alignment mark is formed may be a continuous film unwound from a sheet of film or a roll. The unwinding is performed in the unwinding part which unwinds the polymer base film wound in the form of a roll, and the unwinding part is composed of a plurality of guide rolls or nip rolls for maintaining and conveying the tension of the base film, and accumulator (accumulator) for controlling the conveying amount of the base film. ) May also be included.
권출된 광학부재의 얼라인 마크의 위치 좌표를 측정(S2)한다.The position coordinates of the alignment mark of the unwinded optical member are measured (S2).
위치 좌표의 측정은 특별히 한정하지 않으며, 일례로 얼라인 카메라를 이용하여 위치 좌표를 측정할 수 있다. 상기 측정된 위치 좌표는 광학부재와 액정패널 접합부에 전송한다.The measurement of the position coordinates is not particularly limited, and for example, the position coordinates can be measured using an alignment camera. The measured position coordinates are transmitted to the optical member and the liquid crystal panel bonding portion.
얼라인 마크가 측정된 광학부재를 흡착 드럼에 흡착(S3)한다.The optical member having the alignment mark measured is adsorbed to the adsorption drum (S3).
상기 광학부재를 흡착 드럼에 흡착시키기 전에 상기 광학부재의 얼라인 마크들이 이루는 선과 상기 흡착 드럼 상의 얼라인 마크들이 이루는 선이 서로 평행하도록 상기 광학부재를 정렬한다.Prior to adsorbing the optical member to the absorption drum, the optical member is aligned such that lines formed by the alignment marks of the optical member and lines formed by the alignment marks on the absorption drum are parallel to each other.
흡착 드럼은 표면에 소정의 흡착력을 갖고 회전할 수 있는 것이면 모두 사용할 수 있다.The adsorption drum can be used as long as it can rotate with a predetermined adsorption force on the surface.
일례로 흡착 드럼은 진공의 흡착력에 의한 드럼을 사용할 수 있다. 이는 드럼의 표면에 다수의 진공홀이 형성되며, 진공홀은 흡착 드럼의 길이 방향으로 열을 이루어 형성된 진공홀의 열이 원주 방향으로 이격된다. 또한 하나 또는 복수의 진공홀의 열 단위로 진공홀의 개폐를 제어한다.For example, the adsorption drum may be a drum by vacuum adsorption force. This is a plurality of vacuum holes are formed on the surface of the drum, the vacuum holes are formed in a row in the longitudinal direction of the adsorption drum, the rows of vacuum holes are spaced apart in the circumferential direction. In addition, the opening and closing of the vacuum holes is controlled in units of columns of one or a plurality of vacuum holes.
흡착 드럼의 표면은 접합 시 일정한 압력을 가할 수 있는 수지 또는 고무로 형성된 것이 바람직하다.The surface of the adsorption drum is preferably formed of a resin or rubber that can apply a constant pressure during bonding.
흡착 드럼은 그 면에 광학부재가 모두 포함되며, 광학부재의 얼라인 마크가 서로 겹쳐지지 않도록 드럼의 원주 및 길이를 조절하는 것이 바람직하다.The suction drum includes all of the optical members on its surface, and it is preferable to adjust the circumference and length of the drum so that the alignment marks of the optical members do not overlap each other.
또한, 상기 광학부재가 흡착 드럼에 흡착된 상태에서 상기 액정패널의 접합 스테이지 상에 형성된 얼라인 마크와 상기 광학부재의 얼라인 마크의 위치 정보를 비교하여 드럼의 회전각도를 보정할 수 있다. 이때, 드럼의 회전각도는 드럼의 원주 및 광학부재의 두께 등에 의해 달라질 수 있다.In addition, the rotation angle of the drum may be corrected by comparing the alignment mark formed on the bonding stage of the liquid crystal panel with the position information of the alignment mark of the optical member in the state where the optical member is absorbed by the adsorption drum. At this time, the rotation angle of the drum may vary depending on the circumference of the drum and the thickness of the optical member.
광학부재의 얼라인 마크가 그와 대응되는 액정패널 상의 얼라인 마크 상에 정렬되도록 접합(S4)한다.The alignment mark of the optical member is bonded so as to be aligned on the alignment mark on the liquid crystal panel corresponding thereto.
상기 광학부재의 얼라인 마크의 초기 위치 정보를 바탕으로 상기 흡착 드럼에 흡착된 상기 광학부재가 그에 대응되는 액정패널의 얼라인 마크 상에 정렬되기 전에 상기 액정패널의 접합 스테이지의 얼라인 마크 위치를 보정한다.Based on the initial position information of the alignment mark of the optical member, the alignment mark position of the bonding stage of the liquid crystal panel is adjusted before the optical member adsorbed on the suction drum is aligned on the alignment mark of the liquid crystal panel corresponding thereto. Correct it.
액정패널 스테이지는 통상 진공 챔버내에 구성되며, 상하 이동 및 좌우 회전이 가능하도록 스테이지 이동수단이 구비될 수 있다.The liquid crystal panel stage is usually configured in a vacuum chamber, and stage moving means may be provided to enable vertical movement and left and right rotation.
액정패널 접합 스테이지는 액정패널이 탑재되는 워크 테이블과 액정패널의 얼라인 마크의 위치 좌표를 측정하여 전송된 광학부재의 얼라인 마크 위치 좌표와 비교하는 데이터 처리부를 포함한다.The liquid crystal panel bonding stage includes a work table on which the liquid crystal panel is mounted and a data processing unit for measuring the position coordinates of the alignment marks of the liquid crystal panel and comparing the alignment mark position coordinates of the transmitted optical member.
대응되는 각 얼라인 마크의 위치 좌표가 일치하도록 액정패널 접합 스테이지가 전후, 좌우, 대각 등의 직선 방향으로 이동하거나 액정패널 접합 스테이지의 수직방향을 축으로 회전 이동하여 액정패널의 위치를 수정한다.The position of the liquid crystal panel is corrected by moving the liquid crystal panel bonding stage in a linear direction such as front, rear, left and right, or diagonally or by rotating the vertical direction of the liquid crystal panel bonding stage in an axis so that the position coordinates of the corresponding alignment marks correspond.
본 발명에 따른 액정표시장치의 제조방법은 일례로 반시계 방향으로 회전하는 흡착 드럼에 광학부재를 유입시켜 흡착시킨 후 액정패널 접합 스테이지에서 흡착 드럼을 시계방향으로 회전시켜 광학부재와 액정패널을 접합할 수 있다. 이때, 광학부재는 흡착드럼에 먼저 흡착되는 부분이 액정패널의 마지막 부분에 접합된다.In the manufacturing method of the liquid crystal display according to the present invention, for example, an optical member is introduced into an adsorption drum rotating in a counterclockwise direction and adsorbed, and then the adsorption drum is rotated clockwise in a liquid crystal panel bonding stage to bond the optical member and the liquid crystal panel. can do. At this time, the optical member is first bonded to the adsorption drum is bonded to the last portion of the liquid crystal panel.
또한, 반시계 방향으로 회전하는 흡착드럼에 광학부재를 유입시켜 흡착한 후 액정패널 접합 스테이지에서 흡착 드럼을 반시계 방향으로 재회전시켜 광학부재와 액정패널을 접합할 수 있다. 이때, 광학부재는 흡착드럼에 먼저 흡착되는 부분이 액정패널에 먼저 접합된다.In addition, the optical member is introduced into the adsorption drum rotating in a counterclockwise direction and adsorbed, and then the adsorption drum is rotated counterclockwise in the liquid crystal panel bonding stage to bond the optical member to the liquid crystal panel. At this time, the optical member is first bonded to the liquid crystal panel portion that is first adsorbed to the adsorption drum.
도 2는 본 발명의 일례에 따른 액정표시장치의 제조방법을 나타낸 것이다. 도 2와 같이 얼라인 마크(21)와 패턴화된 영역(22)이 형성된 광학부재(20)를 흡착 드럼(30)에 의해 이송시켜 상기 광학부재의 얼라인 마크가 그와 대응되는 액정패널(10)의 얼라인 마크(11) 상에 정렬되도록 접합된다.
2 illustrates a method of manufacturing a liquid crystal display device according to an exemplary embodiment of the present invention. As shown in FIG. 2, the optical member 20 having the
이하, 본 발명의 이해를 돕기 위하여 바람직한 실시예를 제시하나, 하기 실시예는 본 발명을 예시하는 것일 뿐 본 발명의 범주 및 기술사상 범위 내에서 다양한 변경 및 수정이 가능함은 당업자에게 있어서 명백한 것이며, 이러한 변형 및 수정이 첨부된 특허청구범위에 속하는 것도 당연한 것이다.
Hereinafter, preferred examples are provided to aid the understanding of the present invention, but the following examples are merely for exemplifying the present invention, and it will be apparent to those skilled in the art that various changes and modifications can be made within the scope and spirit of the present invention. It is natural that such variations and modifications fall within the scope of the appended claims.
실시예 1Example 1
롤 형태로 권취되고, 4개의 얼라인 마크가 사방에 형성된 패턴 리타더 가로×세로×두께가 각각 150㎛×150㎛×53㎛인 필름을 준비하였다. 패턴 리타더는 귄취롤을 풀면서 얼라인 카메라를 이용하여 각 얼라인 마크의 좌표를 측정하고 이를 액정패널 접합 스테이지에 전송하였다. It wound up in roll shape, and the film whose pattern retarder width X length X thickness which four alignment marks formed in all directions was 150 micrometers x 150 micrometers x 53 micrometers, respectively was prepared. The pattern retarder measured the coordinates of each alignment mark using an alignment camera while unwinding the roll and transferred it to the liquid crystal panel bonding stage.
이후에 패턴 리타더의 얼라인 마크들이 이루는 선과 흡착 드럼 상의 얼라인 마크들이 이루는 선이 서로 평행하도록 패턴 리타더를 정렬하여 흡착하였다. 이때, 패턴 리타더의 유입 방향에 대하여 흡착 드럼을 반시계 방향으로 회전시킨 후 액정패널 접합 스테이지로 이송하였다.Thereafter, the pattern retarder was aligned and adsorbed so that the lines formed by the alignment marks of the pattern retarder and the lines formed by the alignment marks on the adsorption drum were parallel to each other. At this time, the adsorption drum was rotated counterclockwise with respect to the inflow direction of the pattern retarder and then transferred to the liquid crystal panel bonding stage.
액정패널 접합 스테이지는 진공 챔버 내에 구비되며, 액정패널의 얼라인 마크의 정렬을 확인할 수 있는 얼라인 카메라, 스테이지를 직선 또는 회전하여 이동할 수 있는 스테이지 이동수단 및 각 위치 좌표를 비교하는 데이터 처리 장치가 구비되어 있다.The liquid crystal panel bonding stage is provided in a vacuum chamber, and an alignment camera capable of confirming alignment of alignment marks of the liquid crystal panel, a stage moving means capable of moving the stage by linear or rotation, and a data processing apparatus comparing each position coordinate are provided. It is provided.
액정패널 접합 스테이지에서 액정패널의 얼라인 마크 위치 좌표를 측정하고, 패턴 리타더의 얼라인 마크 위치 정보를 비교하였다.The alignment mark position coordinates of the liquid crystal panel were measured at the liquid crystal panel bonding stage, and the alignment mark position information of the pattern retarder was compared.
이후에 스테이지를 X방향과 Y방향으로 조절하여 각 대응되는 얼라인 마크의 위치 보상을 수행하고 패턴 리타더가 흡착된 흡착 드럼을 시계방향으로 회전시켜 액정패널에 접합하였다.Thereafter, the stage was adjusted in the X direction and the Y direction to perform position compensation of each corresponding alignment mark, and the adsorption drum to which the pattern retarder was adsorbed was rotated clockwise to be bonded to the liquid crystal panel.
상기 패턴 리타더의 얼라인 마크와 그에 대응되는 액정패널의 얼라인 마크 사이의 오차는 약 2㎛ 정도였다.
An error between the alignment mark of the pattern retarder and the alignment mark of the liquid crystal panel corresponding thereto was about 2 μm.
실시예 2Example 2
상기 실시예 1과 동일하게 실시하되, 패턴 리타더가 흡착 드럼에 흡착된 상태에서 상기 액정패널의 접합 스테이지 상에 형성된 얼라인 마크와 상기 패턴 리타더의 얼라인 마크의 위치 정보를 비교하여 드럼의 회전각도를 보정하였다.In the same manner as in Example 1, except that the alignment mark formed on the bonding stage of the liquid crystal panel and the alignment mark of the pattern retarder in the state where the pattern retarder is absorbed by the adsorption drum, The rotation angle was corrected.
이후에 액정패널의 접합 스테이지를 X방향과 Y방향으로 조절하여 각 대응되는 얼라인 마크의 위치 보상을 수행하고 패턴 리타더가 흡착된 흡착 드럼을 시계방향으로 회전시켜 액정패널에 접합하였다.Thereafter, the bonding stage of the liquid crystal panel was adjusted in the X direction and the Y direction to perform position compensation of each corresponding alignment mark, and the adsorption drum to which the pattern retarder was adsorbed was rotated clockwise to bond the liquid crystal panel.
상기 패턴 리타더의 얼라인 마크와 그에 대응되는 액정패널의 얼라인 마크 사이의 오차는 약 1㎛ 정도였다.
An error between the alignment mark of the pattern retarder and the alignment mark of the liquid crystal panel corresponding thereto was about 1 μm.
10 : 액정패널
11 : 액정패널의 얼라인 마크
20 : 광학부재
21 : 광학부재의 얼라인 마크
22 : 패턴화된 영역
30 : 흡착 드럼
40 : 액정패널 접합 스테이지
50 : 카메라10: liquid crystal panel
11: alignment mark of liquid crystal panel
20: optical member
21: alignment mark of the optical member
22: patterned area
30: adsorption drum
40: liquid crystal panel bonding stage
50: camera
Claims (8)
A method of manufacturing a liquid crystal display device comprising transferring an optical member on which an alignment mark is formed by an adsorption drum so that the alignment mark of the optical member is aligned on an alignment mark on a liquid crystal panel corresponding thereto.
The liquid crystal display of claim 1, wherein the optical member is aligned such that lines formed by alignment marks of the optical member and lines formed by the alignment marks on the absorption drum are parallel to each other before the optical member is adsorbed onto the absorption drum. Method of manufacturing the device.
The method of claim 1, wherein the rotation angle of the drum is corrected by comparing the alignment mark formed on the bonding stage of the liquid crystal panel with the position information of the alignment mark of the optical member while the optical member is absorbed by the absorption drum. Method of manufacturing a liquid crystal display device comprising.
The bonding stage of the liquid crystal panel according to claim 1, wherein the optical member adsorbed on the adsorption drum is aligned on the alignment mark of the liquid crystal panel corresponding thereto based on the initial position information of the alignment mark of the optical member. A method of manufacturing a liquid crystal display device comprising correcting an alignment mark position.
The method of claim 4, wherein the optical member is a pattern retarder.
The method of claim 1, wherein an error between the alignment mark of the optical member and the alignment mark of the liquid crystal panel corresponding thereto is within ± 5 μm.
권출된 광학부재의 얼라인 마크 위치 좌표를 측정하는 얼라인 마크 좌표 측정부;
좌표가 측정된 광학부재를 흡착 드럼의 회전에 의해 흡착하는 광학부재 흡착부; 및
광학부재의 얼라인 마크 좌표와, 이에 대응되는 액정패널의 얼라인 마크 위치 좌표를 서로 비교하여 대응되는 얼라인 마크의 위치가 정렬되도록 흡착 드럼으로 접합하는 접합부가 포함된 접합장치.
A winding-up unit which unwinds the optical member on which the alignment mark is formed;
An alignment mark coordinate measuring unit for measuring alignment mark position coordinates of the unwinded optical member;
An optical member adsorption unit for adsorbing the optical member whose coordinates are measured by the rotation of the adsorption drum; And
And a bonding unit for bonding the alignment mark coordinates of the optical member and the alignment mark position coordinates of the liquid crystal panel to be bonded to each other by an adsorption drum to align the corresponding alignment marks.
The bonding apparatus according to claim 7, wherein the bonding unit further includes a correction unit for calculating and correcting coordinates so that the alignment mark of the optical member is aligned on the alignment mark of the liquid crystal panel corresponding thereto.
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| KR1020100049502A KR101657184B1 (en) | 2010-05-27 | 2010-05-27 | Method for preparing liquid crysral display |
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| WO2019177379A1 (en) * | 2018-03-16 | 2019-09-19 | 주식회사 엘지화학 | Display unit manufacturing method |
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| CN111247475A (en) * | 2018-03-16 | 2020-06-05 | 株式会社Lg化学 | Method of manufacturing display unit |
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| KR101657184B1 (en) | 2016-09-20 |
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