KR20120049486A - Bonding method for electrowetting display device - Google Patents

Bonding method for electrowetting display device Download PDF

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KR20120049486A
KR20120049486A KR1020100110753A KR20100110753A KR20120049486A KR 20120049486 A KR20120049486 A KR 20120049486A KR 1020100110753 A KR1020100110753 A KR 1020100110753A KR 20100110753 A KR20100110753 A KR 20100110753A KR 20120049486 A KR20120049486 A KR 20120049486A
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substrate
module block
frame mechanism
oil layer
display device
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KR101757923B1 (en
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민경희
이준석
강한샘
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엘지디스플레이 주식회사
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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 
    • G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/004—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid
    • G02B26/005—Optical devices or arrangements for the control of light using movable or deformable optical elements based on a displacement or a deformation of a fluid based on electrowetting
    • 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
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • 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
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device

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Abstract

PURPOSE: A bonding method of an electrowetting display device is provided to bond an upper board with a lower board using frame implements under water and atmosphere. CONSTITUTION: A second substrate(200) faces a first substrate. The first substrate is placed on a frame implement. A weight plumb is placed on the second substrate. The weight plumb applies pressure. The first and second substrates are bonded each other. UV light is irradiated on a rear side of the frame implement. A sealant is hardened.

Description

전기습윤 표시장치의 합착방법{BONDING METHOD FOR ELECTROWETTING DISPLAY DEVICE}Bonding method of electrowetting display device {BONDING METHOD FOR ELECTROWETTING DISPLAY DEVICE}

본 발명은 전기습윤 표시장치에 관한 것으로, 특히, 미스 얼라인을 최소화하여 제품의 신뢰성을 향상시키기 위한 전기습윤 표시장치의 합착방법에 관한 것이다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrowetting display device, and more particularly, to a method of bonding an electrowetting display device for minimizing misalignment to improve product reliability.

일반적으로 전기습윱(Electrowetting)이란 전해질인 수성 유동체(aqueous liquid)에 전압을 걸어줌으로써 액체의 표면 장력을 변화시키는 기술이다. 상기 기술은 방수 절연체, 전극, 친수성 액체(aqueous liquid)와 소수성 액체(non-aqueous liquid)로 구성된 1 픽셀의 한정된 공간에서 물에 전압을 가함으로 물의 표면장력을 변화시켜 기름을 자리 이동시켜 반사형 표시장치에 응용된다. In general, electrowetting is a technique of changing the surface tension of a liquid by applying a voltage to an aqueous liquid, which is an electrolyte. The technology changes the surface tension of water by shifting the oil's surface tension by changing the surface tension of the water in a confined space of 1 pixel consisting of a waterproof insulator, an electrode, an aqueous liquid and a non-aqueous liquid. It is applied to the display device.

동작시, 물과 절연체 각각에 정극성 전압과 부극성 전압을 인가하면 색을 띈 기름이 한쪽으로 이동하고, 반사광을 변화시켜 전체적인 컬러를 조절한다. In operation, the application of positive and negative voltages to the water and insulator, respectively, shifts the colored oil to one side and changes the reflected light to adjust the overall color.

특히, 필립스사 중앙연구소의 롭 헤이즈 박사(Dr. Rob Hayes)에 의한 전기습윤 표시장치는 백색 기판, 투명 전극, 소수성 절연막, 컬러를 뛴 기름, 물 그리고 물에 전압을 걸어줄 수 있는 금속 전극으로 구성되고, 여러 개의 구성요소들이 패시브 매트릭스(PM) 방식으로 구동된다.In particular, the electrowetting display by Dr. Rob Hayes of the Philips Central Laboratory is a white electrode, a transparent electrode, a hydrophobic insulating film, colored oil, water and a metal electrode that can apply voltage to water. And several components are driven in a passive matrix (PM) manner.

이러한 전기습윤 표시장치는 전압이 가해지지 않을 경우 상기 기름이 기판 상에 고르게 퍼져 있다가 금속 전극에 전압을 걸어주게 되면 기름이 한쪽으로 치우치게 된다. 이러한 기름은 액정표시장치에서 액정의 스위치 역할을 할 수 있다. In such an electrowetting display, when no voltage is applied, the oil is evenly spread on the substrate, and when the voltage is applied to the metal electrode, the oil is biased to one side. This oil may serve as a switch of the liquid crystal in the liquid crystal display device.

한편, 전기습윤 표시장치는 상판 및 하판 합착할 때 반드시 수중에서 가압 합착이 이루어진다. 수중에서 합착을 진행하게 되므로 정밀하게 상판 및 하판의 얼라인(Align)이 불가능하고 단위 면적당 균등한 압력을 줄 수 없기 때문에 셀 갭이 불균일해져서 합칙이 제대로 이루어지지 않는 문제가 발생하게 된다. On the other hand, the electrowetting display device is necessarily pressurized in the water when the upper and lower plates are bonded. Since the adhering is carried out in the water, the alignment of the upper and lower plates is impossible and the pressure cannot be given evenly per unit area, so the cell gap becomes uneven and the law does not work properly.

본 발명은 프레임 기구물을 이용하여 상판 및 하판을 합착함으로써 수중뿐만 아니라 대기 상태에서도 충분히 합착 공정을 진행할 수 있어 미스 얼라인 및 불균일한 셀 갭을 방지할 수 있는 전기습윤 표시장치의 합착 방법을 제공함에 그 목적이 있다. The present invention provides a method of attaching an electrowetting display device capable of sufficiently adhering the process in water as well as in the air by bonding the upper and lower plates using a frame mechanism to prevent misalignment and uneven cell gap. The purpose is.

본 발명의 실시예에 따른 전기습윤 표시장치의 합착 방법은 박막트랜지스터와, 화소전극과, 상기 박막트랜지스터와 대응되게 형성된 오일층을 포함한 제1 기판을 준비하는 단계와, 상기 제1 기판과 대향되며 블랙 매트릭스와 컬러필터 및 공통전극을 구비한 제2 기판을 준비하는 단계와, 상기 제2 기판 상에 실재를 디스펜싱 하는 단계와, 상기 오일층이 형성된 제1 기판을 프레임 기구물에 안착하는 단계와, 상기 프레임 기구물에 안착된 제1 기판과 마주보도록 상기 제2 기판을 안착하는 단계와, 상기 제2 기판 상에 무게추를 올려 압력을 가하여 상기 제1 및 제2 기판을 합착하는 단계 및 상기 프레임 기구물 배면에서 UV를 조사하여 상기 실재를 경화시키는 단계를 포함하고, 상기 프레임 기구물은 상기 제1 기판을 수납 및 지지하는 모듈 블록부와, 상기 제2 기판에 압력을 가하는 무게추를 포함한다.According to an embodiment of the present invention, a method of bonding an electrowetting display device includes preparing a first substrate including a thin film transistor, a pixel electrode, and an oil layer formed to correspond to the thin film transistor, and facing the first substrate. Preparing a second substrate having a black matrix, a color filter, and a common electrode; dispensing an actual material on the second substrate; and placing the first substrate on which the oil layer is formed on a frame mechanism; And mounting the second substrate so as to face the first substrate seated on the frame mechanism, attaching the first and second substrates by applying a pressure by lifting a weight on the second substrate and the frame. Irradiating UV from the back of the apparatus to cure the substance, wherein the frame apparatus includes a module block portion for receiving and supporting the first substrate, and the first substrate. 2 Includes a weight to apply pressure to the substrate.

본 발명의 실시예에 따른 전기습윤 표시장치의 합착 방법은 하부 기판을 지지하는 모듈 박스와 상부 기판에 압력을 가하는 무게추를 구비한 프레임 기구물을 이용하여 하부 기판 및 상부 기판을 합착함으로써 수중에서 합착 공정을 진행할 때 발생할 수 있는 미스 얼라인 및 불균일한 셀 갭을 방지할 수 있다. In the bonding method of an electrowetting display device according to an embodiment of the present invention, the lower substrate and the upper substrate are bonded together by using a frame mechanism including a module box for supporting the lower substrate and a weight that applies pressure to the upper substrate. Misalignment and non-uniform cell gaps that can occur during the process can be avoided.

도 1은 본 발명의 실시예에 따른 전기습윤 표시장치를 나타낸 도면이다.
도 2의 (a) 및 (b)는 도 1의 제1 및 제2 기판을 합착하는 프레임 기구물을 각각 나타낸 도면이다.
도 3은 도 2의 프레임 기구물을 이용하여 도 1의 표시패널을 합착하는 모습을 나타낸 단면도이다. 1 illustrates an electrowetting display device according to an exemplary embodiment of the present invention.
2 (a) and 2 (b) are diagrams each illustrating a frame mechanism for bonding the first and second substrates of FIG.
3 is a cross-sectional view illustrating a state in which the display panel of FIG. 1 is bonded using the frame mechanism of FIG. 2.

이하, 첨부된 도면을 참조하여 본 발명에 따른 실시예를 설명하기로 한다. Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings.

도 1은 본 발명의 실시예에 따른 전기습윤 표시장치를 나타낸 도면이다. 1 illustrates an electrowetting display device according to an exemplary embodiment of the present invention.

도 1에 도시된 바와 같이, 본 발명의 실시예에 따른 전기습윤 표시장치는 화상을 표시하는 표시패널(10)과, 상기 표시패널(10)에 광을 제공하는 광원(도시하지 않음)을 포함하여 형성된다. As shown in FIG. 1, an electrowetting display device according to an exemplary embodiment of the present invention includes a display panel 10 for displaying an image and a light source (not shown) for providing light to the display panel 10. Is formed.

상기 표시패널(10)은 제1 기판(100)과, 상기 제1 기판(100)에 대항하여 위치한 제2 기판(200)과, 상기 제1 및 제2 기판(100, 200) 사이에 형성된 유체층(140)을 포함하여 구성된다. The display panel 10 includes a fluid formed between the first substrate 100, the second substrate 200 positioned against the first substrate 100, and the first and second substrates 100 and 200. And layer 140.

상기 제1 기판(100)은 유리, 석영, 세라믹 또는 플라스틱 등의 절연성 재질을 포함하여 만들어지며, 제1 기판(100) 상에는 서로 교차하여 화소영역을 정의하는 게이트라인(도시하지 않음)과 데이터라인(도시하지 않음)이 구비된다. The first substrate 100 is made of an insulating material such as glass, quartz, ceramic, or plastic, and includes a gate line (not shown) and a data line on the first substrate 100 that cross each other to define pixel regions. (Not shown) is provided.

상기 화소영역에는 상기 유체층(140)에 전계를 인가하기 위한 화소전극(120)이 형성된다. 상기 유체층(140)은 상기 화소전극(120)의 전압을 조절함에 따라 분포가 변경되어 광을 차단하거나 투과시키게 된다. The pixel electrode 120 for applying an electric field to the fluid layer 140 is formed in the pixel region. As the fluid layer 140 adjusts the voltage of the pixel electrode 120, the distribution is changed to block or transmit light.

상기 게이트라인과 데이터라인의 교차점에는 상기 게이트라인과 데이터라인의 신호에 따라 화소전극(206)을 구동하는 스위칭 소자인 박막트랜지스터(TFT)가 구비된다. 상기 박막트랜지스터(TFT)는 각 화소마다 배치되어 유체층(140)에 신호 전압을 인가하거나 차단하는 역할을 한다. A thin film transistor (TFT), which is a switching element that drives the pixel electrode 206 according to the signal of the gate line and the data line, is provided at the intersection point of the gate line and the data line. The thin film transistor TFT is disposed for each pixel to serve to block or apply a signal voltage to the fluid layer 140.

상기 박막트랜지스터(TFT)는 게이트라인에서 연장되어 스캔 신호가 인가되는 게이트 전극과, 상기 게이트 전극의 상부에 형성된 반도체층과, 상기 반도체층 상에 형성된 소스 및 드레인 전극을 포함한다. The thin film transistor TFT includes a gate electrode extending from a gate line to which a scan signal is applied, a semiconductor layer formed on the gate electrode, and a source and drain electrode formed on the semiconductor layer.

상기 박막트랜지스터(TFT)가 형성된 제1 기판(100)에는 절연막(110)이 형성되고, 상기 절연막(110)이 형성된 제1 기판(100)에는 상기 박막트랜지스터(TFT)의 드레인 전극과 전기적으로 접속된 화소전극(120)이 형성된다. An insulating film 110 is formed on the first substrate 100 on which the thin film transistor TFT is formed, and is electrically connected to the drain electrode of the thin film transistor TFT on the first substrate 100 on which the insulating film 110 is formed. The pixel electrode 120 is formed.

상기 화소전극(120)이 형성된 제1 기판(100)에는 상기 유체층(140)과 서로 혼합될 수 없는 오일층(130)이 형성된다.An oil layer 130 that cannot be mixed with the fluid layer 140 is formed on the first substrate 100 on which the pixel electrode 120 is formed.

상기 제2 기판(200)에는 블랙 매트릭스(210)와, 컬러필터층(220) 및 투명 전극층(230)이 순차적으로 형성된다. The black matrix 210, the color filter layer 220, and the transparent electrode layer 230 are sequentially formed on the second substrate 200.

상기 제1 및 제2 기판(100, 200) 사이에 위치하는 유체층(140)은 전기전도성을 가진 전해질 용액(Electrolyte)가 적절하며, 용매로는 물을 사용할 수 있다. 상기 오일층(130)은 불투명하게 형성되며 주로 검은색으로 형성되며 전기절연성을 가진다. 상기 유체층(140)과 오일층(130)은 서로 다른 전기전도도 또는 극성을 가진다. The fluid layer 140 positioned between the first and second substrates 100 and 200 may be an electrolytic solution having an electroconductivity, and water may be used as the solvent. The oil layer 130 is opaque and is mainly formed in black and has electrical insulation. The fluid layer 140 and the oil layer 130 have different electrical conductivity or polarity.

상기 제1 및 제2 기판(100, 200)은 도전볼을 포함한 실(240)을 통해 합착되며 상기 실(240)에 의해 일정한 셀-갭을 유지하게 된다. The first and second substrates 100 and 200 are bonded to each other through a seal 240 including conductive balls and maintain a constant cell-gap by the seal 240.

상기 박막트랜지스터(TFT)가 턴-오프 상태를 유지하면, 상기 공통전극(230)에 일정 레벨의 공통전극전압(Vcom)이 인가되더라도 상기 화소전극(120)이 플로팅 상태를 유지하므로 상기 화소전극(120)과 공통전극(230) 간에는 어떠한 전위차도 발생되지 않는다. 이에 따라 격벽(132)에 의해 정의되는 영역에 수용된 오일층(130)은 전체적으로 퍼진 상태를 유지하게 된다. When the thin film transistor TFT maintains a turn-off state, the pixel electrode 120 remains in a floating state even when a predetermined level of common electrode voltage Vcom is applied to the common electrode 230. No potential difference occurs between the 120 and the common electrode 230. Accordingly, the oil layer 130 accommodated in the area defined by the partition wall 132 is maintained in a spread state as a whole.

상기 박막트랜지스터(TFT)가 턴-온 되면, 상기 화소전극(120)에는 데이터라인을 통해 전달되는 데이터 전압이 인가되고, 상기 공통전극(230)에는 상기 공통전극 전압(Vcom)이 인가되어 상기 화소전극(120)과 공통전극(230) 간에는 일정 레벨의 전위차가 발생된다. 이에 따라, 격벽(132)에 의해 정의되는 영역에 수용된 오일층(130)은 상기 전위차에 대응하여 뭉쳐진 상태를 유지한다. When the thin film transistor TFT is turned on, a data voltage transferred through a data line is applied to the pixel electrode 120, and the common electrode voltage Vcom is applied to the common electrode 230, thereby providing the pixel. A potential level of a predetermined level is generated between the electrode 120 and the common electrode 230. Accordingly, the oil layer 130 accommodated in the region defined by the partition wall 132 maintains a state in which the oil layer 130 is aggregated in response to the potential difference.

이때, 상기 격벽(132)은 상기 화소전극(120)의 가장자리를 둘러싸며 일정 높이로 형성되어 상기 오일층(130)을 영역별로 분리한다. In this case, the partition wall 132 is formed at a predetermined height surrounding the edge of the pixel electrode 120 to separate the oil layer 130 for each region.

도 2의 (a) 및 (b)는 도 1의 제1 및 제2 기판을 합착하는 프레임 기구물을 각각 나타낸 도면이다. 2 (a) and 2 (b) are diagrams each illustrating a frame mechanism for bonding the first and second substrates of FIG.

도 1 및 도 2의 (a) 및 (b)에 도시된 바와 같이, 표시패널(도 1의 10)은 프레임 기구물(300)에 의해 합착된다. As shown in FIGS. 1 and 2 (a) and (b), the display panel 10 of FIG. 1 is bonded by the frame mechanism 300.

상기 프레임 기구물(300)은 제1 기판(도 1의 100)이 안착되는 모듈 블록부(300d)와, 실을 디스펜싱 한 제2 기판(도 1의 200)에 압력을 가하는 무게추(300e)와, 상기 모듈 블록부(300d)에 안착되는 제1 기판(100)의 지지하는 석영판(300c)과, 상기 석영판(300c) 및 모듈 블록부(300d)를 지지하는 아크릴(300a) 및 상기 석영판(300c)과 아크릴(300a)을 체결하기 위한 패킹 러버(300b)를 포함한다. The frame mechanism 300 has a weight 300e for applying pressure to the module block portion 300d on which the first substrate (100 in FIG. 1) is seated and the second substrate (200 in FIG. 1) in which the yarn is dispensed. And a quartz plate 300c for supporting the first substrate 100 seated on the module block 300d, and an acrylic 300a for supporting the quartz plate 300c and the module block 300d. The packing rubber 300b for fastening the quartz plate 300c and the acrylic 300a is included.

상기 모듈 블록부(300d)는 상기 표시패널(10)이 상기 모듈 블록부(300d) 내부에서 움직이지 않도록 하기 위해 상기 표시패널(도 1의 10)의 높이보다 높게 형성된다. 상기 무게추(300e)의 크기는 상기 표시패널(10)의 크기와 동일하고, 마찬가지로 상기 모듈 블록부(300d)의 내부 또한 상기 표시패널(10)의 크기와 동일하다. The module block part 300d is formed higher than the height of the display panel 10 of FIG. 1 in order to prevent the display panel 10 from moving inside the module block part 300d. The size of the weight 300e is the same as that of the display panel 10, and the inside of the module block 300d is also the same as the size of the display panel 10.

상기 프레임 기구물(300)의 바닥면 특히, 표시패널(10)이 안착되는 모듈 블록부(300d)의 배면은 투명한 재질로 이루어질 수 있다. 또한, 상기 모듈 블록부(300d)의 배면 중 상기 표시패널(10)의 실(도 1의 240)과 대응되는 부분만 투명한 재질로 이루어질 수 있다. The bottom surface of the frame mechanism 300, in particular, the back surface of the module block 300d on which the display panel 10 is mounted may be made of a transparent material. In addition, only a portion of the rear surface of the module block 300d corresponding to the seal 240 of FIG. 1 may be made of a transparent material.

상기 모듈 블록부(300d)의 배면을 투명한 재질로 형성하는 것은 상기 제2 기판(200)에 디스펜싱된 실(240)에 UV를 조사하여 상기 실(240)을 경화시키기 위함이다.The back surface of the module block 300d is formed of a transparent material to cure the seal 240 by irradiating UV to the seal 240 dispensed on the second substrate 200.

상기 모듈 블록부(300d)의 배면에 위치하는 석영판(300b) 및 아크릴(300a) 또한 상기 표시패널(10)의 실(240)을 경화시키기 위해 투명한 재질로 이루어져야 한다. The quartz plate 300b and the acrylic 300a disposed on the rear surface of the module block 300d may also be made of a transparent material to cure the seal 240 of the display panel 10.

도 3은 도 2의 프레임 기구물을 이용하여 도 1의 표시패널을 합착하는 모습을 나타낸 단면도이다. 3 is a cross-sectional view illustrating a state in which the display panel of FIG. 1 is bonded using the frame mechanism of FIG. 2.

도 1 내지 도 3에 도시된 바와 같이, 상기 프레임 기구물(300)의 모듈 블록부(300d) 내부에 오일층(130)이 형성된 제1 기판(100)이 위치한다. 이어, 실(240)이 디스펜싱 된 제2 기판(200)이 상기 제1 기판(100)과 대향하도록 상기 모듈 블록부(300d) 내부에 위치한다. 상기 모듈 블록부(300d) 내부에 위치한 제2 기판(200) 상에 상기 제1 및 제2 기판(100, 200)을 합착하기 위해 압력을 가하는 무게추(300e)를 올린다. As shown in FIGS. 1 to 3, the first substrate 100 having the oil layer 130 is formed inside the module block part 300d of the frame mechanism 300. Subsequently, the second substrate 200 on which the seal 240 is dispensed is positioned inside the module block 300d such that the second substrate 200 faces the first substrate 100. A weight 300e is applied to apply pressure to bond the first and second substrates 100 and 200 onto the second substrate 200 located in the module block 300d.

상기 제1 기판(100)을 지지하는 모듈 블록부(300d)와, 상기 제2 기판(200)상에 압력을 가하는 무게추(300e)로 구성된 프레임 기구물(300)을 이용하여 상기 제1 및 제2 기판(100, 200)을 합착하게 되면 수중뿐만 아니라 대기 중에서도 상기 표시패널(10)을 합착할 수 있다. The first and the first using a frame mechanism 300 composed of a module block portion 300d for supporting the first substrate 100 and a weight 300e for applying pressure on the second substrate 200. When the substrates 100 and 200 are bonded to each other, the display panel 10 may be bonded to each other in the air as well as underwater.

상기 프레임 기구물(300)을 이용하여 표시패널(도 1의 10)을 합착하는 과정은 다음과 같다. A process of attaching the display panel 10 of FIG. 1 using the frame mechanism 300 is as follows.

오일층(130)이 형성된 제1 기판(100)을 모듈 블록부(300d) 내부에 위치시킨다. 이어, 상기 제1 기판(100)과 대향되는 제2 기판(200) 상에 실(240)을 디스펜싱한다. 상기 실(240)이 디스펜싱 된 제2 기판(200)을 상기 제1 기판(100)이 위치한 모듈 블록부(300d) 상에 위치시킨다. The first substrate 100 on which the oil layer 130 is formed is positioned inside the module block part 300d. Subsequently, the seal 240 is dispensed on the second substrate 200 facing the first substrate 100. The second substrate 200 dispensed with the seal 240 is positioned on the module block part 300d on which the first substrate 100 is located.

연속하여, 상기 제2 기판(200) 상에 압력을 가하기 위한 무게추(300e)를 올려놓는다. 이어, 상기 모듈 블록부(300d) 배면에 UV를 조사하여 상기 실(240)을 경화시킨다. Subsequently, the weight 300e for applying pressure on the second substrate 200 is placed. Subsequently, UV is irradiated on the rear surface of the module block part 300d to cure the seal 240.

이와 같이, 본 발명에 따른 전기습윤 표시장치의 합착방법은 제1 기판(100)을 수납 및 지지하는 모듈 블록무(300d) 및 제2 기판(200)에 압력을 가하는 무게추(300e)를 구비한 프레임 기구물을 이용하여 수중뿐만 아니라 대기 중에서도 얼마든지 합착이 가능해진다. As described above, the bonding method of the electrowetting display device according to the present invention includes a module block nothing 300d for accommodating and supporting the first substrate 100 and a weight 300e for applying pressure to the second substrate 200. By using one frame mechanism, bonding can be performed in the air as well as underwater.

이로 인해, 본 발명의 경우 수중에서만 합착이 가능하여 미스 얼라인 및 셀-갭 불균일 현상이 발생한 종래의 경우에 비해 합착 불량을 최소화할 수 있다. For this reason, in the case of the present invention, the bonding can be performed only in the water, thereby minimizing the bonding failure as compared with the conventional case in which the misalignment and the cell-gap nonuniformity occur.

10:표시패널 100:제1 기판
110:절연막 120:화소전극
130:오일층 132:격벽
140:유체층 200:제2 기판
210:블랙 매트릭스 220:컬러필터
230:공통전극 240:실
300:프레임 기구물 300a:아크릴
300b:패킹 러버 300c:석영판
300d:모듈 블록부 300e:무게추10: display panel 100: first substrate
110: insulating film 120: pixel electrode
130: oil layer 132: partition wall
140: fluid layer 200: second substrate
210: black matrix 220: color filter
230: common electrode 240: thread
300: frame mechanism 300a: acrylic
300b: packing rubber 300c: quartz board
300d: module block 300e: weight

Claims (6)

박막트랜지스터와, 화소전극과, 상기 박막트랜지스터와 대응되게 형성된 오일층을 포함한 제1 기판을 준비하는 단계;
상기 제1 기판과 대향되며 블랙 매트릭스와 컬러필터 및 공통전극을 구비한 제2 기판을 준비하는 단계;
상기 제2 기판 상에 실재를 디스펜싱 하는 단계;
상기 오일층이 형성된 제1 기판을 프레임 기구물에 안착하는 단계;
상기 프레임 기구물에 안착된 제1 기판과 마주보도록 상기 제2 기판을 안착하는 단계;
상기 제2 기판 상에 무게추를 올려 압력을 가하여 상기 제1 및 제2 기판을 합착하는 단계; 및
상기 프레임 기구물 배면에서 UV를 조사하여 상기 실재를 경화시키는 단계;를 포함하고,
상기 프레임 기구물은 상기 제1 기판을 수납 및 지지하는 모듈 블록부와, 상기 제2 기판에 압력을 가하는 무게추를 포함하는 것을 특징으로 하는 전기습윤 표시장치의 합착방법.Preparing a first substrate including a thin film transistor, a pixel electrode, and an oil layer formed to correspond to the thin film transistor;
Preparing a second substrate facing the first substrate and having a black matrix, a color filter, and a common electrode;
Dispensing a substance on the second substrate;
Mounting the first substrate on which the oil layer is formed on a frame mechanism;
Mounting the second substrate to face the first substrate seated on the frame mechanism;
Attaching the first and second substrates by applying a pressure by lifting a weight on the second substrate; And
Irradiating UV from the back of the frame apparatus to cure the substance;
And the frame mechanism includes a module block portion for accommodating and supporting the first substrate and a weight to apply pressure to the second substrate. 제1 항에 있어서,
상기 모듈 블록부에서 상기 제1 기판이 수납되는 하부면은 상기 실재와 대응되는 부분에 투명부를 구비하는 것을 특징으로 하는 전기습윤 표시장치의 합착방법.The method according to claim 1,
And a lower portion of the module block portion in which the first substrate is accommodated has a transparent portion in a portion corresponding to the real material. 제1 항에 있어서,
상기 모듈 블록부에서 상기 제1 기판이 수납되는 하부면은 전면 투명한 재질로 이루어지는 것을 특징으로 하는 전기습윤 표시장치의 합착방법.The method according to claim 1,
And a lower surface on which the first substrate is accommodated in the module block part is made of a transparent front surface. 제1 항에 있어서,
상기 프레임 기구물은 상기 모듈 블록부 하부면을 지지하는 석영판 및 아크릴을 더 포함하는 것을 특징으로 하는 전기습윤 표시장치의 합착방법.The method according to claim 1,
And the frame mechanism further comprises a quartz plate and an acrylic supporting the lower surface of the module block portion. 제1 항에 있어서,
상기 제1 및 제2 기판 사이에는 상기 오일층과 반대 극성을 갖는 유체층이 형성되는 것을 특징으로 하는 전기습윤 표시장치의 합착방법.The method according to claim 1,
And a fluid layer having a polarity opposite to that of the oil layer is formed between the first and second substrates. 제1 항에 있어서,
상기 제1 기판은 상기 화소전극의 가장자리를 둘러싸며 일정 높이로 형성되어 상기 오일층을 영역별로 구분하는 격벽을 더 포함하는 것을 특징으로 하는 전기습윤 표시장치의 합착방법.
The method according to claim 1,
And the first substrate further includes a partition wall formed around the edge of the pixel electrode at a predetermined height to divide the oil layer into regions.
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KR20130143300A (en) * 2012-06-21 2013-12-31 삼성디스플레이 주식회사 Substrate for an electro wetting display device
WO2022191512A1 (en) * 2021-03-08 2022-09-15 삼성전자주식회사 Color converter layer and manufacturing method thereof

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JP2001188261A (en) 1999-12-28 2001-07-10 Nippon Mitsubishi Oil Corp Electrochromic element
US6407847B1 (en) 2000-07-25 2002-06-18 Gentex Corporation Electrochromic medium having a color stability
JP2002169187A (en) 2000-11-30 2002-06-14 Nippon Mitsubishi Oil Corp Method for manufacturing electrochromic light-control glass cell and electrochromic light-control glass

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130143300A (en) * 2012-06-21 2013-12-31 삼성디스플레이 주식회사 Substrate for an electro wetting display device
WO2022191512A1 (en) * 2021-03-08 2022-09-15 삼성전자주식회사 Color converter layer and manufacturing method thereof

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