KR100387230B1 - Method for manufacturing liquid crystal display panel - Google Patents
Method for manufacturing liquid crystal display panel Download PDFInfo
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- KR100387230B1 KR100387230B1 KR1019960025910A KR19960025910A KR100387230B1 KR 100387230 B1 KR100387230 B1 KR 100387230B1 KR 1019960025910 A KR1019960025910 A KR 1019960025910A KR 19960025910 A KR19960025910 A KR 19960025910A KR 100387230 B1 KR100387230 B1 KR 100387230B1
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- liquid crystal
- crystal display
- crystal layer
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- polymer precursor
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 89
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 7
- 239000000758 substrate Substances 0.000 claims abstract description 45
- 229920000642 polymer Polymers 0.000 claims abstract description 33
- 239000002243 precursor Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 239000011159 matrix material Substances 0.000 claims abstract description 8
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000004988 Nematic liquid crystal Substances 0.000 claims description 3
- -1 acrylic compound Chemical class 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 claims description 3
- 239000003999 initiator Substances 0.000 claims description 3
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims description 2
- 239000004990 Smectic liquid crystal Substances 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 238000001723 curing Methods 0.000 claims 2
- 238000000016 photochemical curing Methods 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 abstract description 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 239000003566 sealing material Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 1
- OXMXCXVATVYIJJ-UHFFFAOYSA-N C(C=C)(=O)O.C(C=C)(=O)O.CCOC1=C(O)C=CC(=C1)C(C)(C)C1=CC=C(C=C1)O Chemical compound C(C=C)(=O)O.C(C=C)(=O)O.CCOC1=C(O)C=CC(=C1)C(C)(C)C1=CC=C(C=C1)O OXMXCXVATVYIJJ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012905 input function Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
Description
본 발명은 액정표시소자 패널 및 그 제조 방법에 관한 것으로서, 상세하게는 기판 사이에 개재되어 있는 액정층의 두께 균일성이 우수하며 장시간 유지될 수 있는 액정표시소자 패널 및 그 제조 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display panel and a method of manufacturing the same, and more particularly, to a liquid crystal display panel and a method of manufacturing the same, which are excellent in thickness uniformity of the liquid crystal layer interposed between substrates and can be maintained for a long time.
액정 표시소자(Liquid Crystal Display; 이하 LCD라 함)는 액정자체의 누설전류가 적고, 큰 축적용량을 가질 필요가 없으며 전력 소모가 작다는 장점이 있기 때문에 그 수요가 날로 확대되고 있으며, 이중 TN(Twisted Nematic)형 및 STN(Super Twisted Nematic)형 LCD가 주류를 이루고 있다.Liquid crystal displays (hereinafter referred to as LCDs) have the advantages of low leakage current of the liquid crystal itself, no need for large accumulation capacity, and low power consumption. Twisted Nematic (STN) and Super Twisted Nematic (STN) type LCDs are mainstream.
이러한 액정표시소자는 광원으로부터 입사되는 광을 차단 및 투과하는 원리를 이용하는 것으로서, 이를 위한 필수적인 요소로서 액정표시소자 패널 및 그 양쪽에 구비된 두 개의 편광판이 있다. 이중, 본 발명은 액정표시소자 패널에 관한 것이다.The liquid crystal display device uses a principle of blocking and transmitting light incident from a light source, and as an essential element therefor, there are a liquid crystal display panel and two polarizing plates provided at both sides thereof. Among these, the present invention relates to a liquid crystal display panel.
제1도는 TFT 소자를 채용하는 일반적인 액정표시소자 패널의 구성도로서, 능동회로부(박막트랜지스트 및 커패시터)(2) 및 투명전극(3) 및 배향막(4)을 구비한 상부기판(1)과 하부전극(3'), 배향막(4'), 블랙매트릭스(5) 및 칼라필터(6)를 구비한 하부기판(1')을 포함한다. 이러한 상부기판(1)과 하부기판(1') 사이에는 액정(7)이 배열되어 있는 액정층(8)이 개재되어 있다. 또한, 기판(1,1')은 그 가장자리 부분이 밀봉재(미도시)를 이용하여 접합되어 있으며, 밀봉재는 액정이 외부로 유출되지 않도록 하는 역할도 한다.FIG. 1 is a block diagram of a general liquid crystal display device panel employing a TFT element, and includes an upper circuit 1 having an active circuit (thin film transistor and capacitor) 2, a transparent electrode 3, and an alignment layer 4. And a lower substrate 1 'having a lower electrode 3', an alignment layer 4 ', a black matrix 5, and a color filter 6. The liquid crystal layer 8 in which the liquid crystal 7 is arranged is interposed between the upper substrate 1 and the lower substrate 1 ′. In addition, the edges of the substrates 1 and 1 'are bonded to each other using a sealing material (not shown), and the sealing material also serves to prevent liquid crystals from flowing out.
한편, 액정표시소자는 화상표시소자이므로 휘도, 콘트라스트와 같은 특성이 우수할 필요가 있다. 이는 전계의 인가 여부에 따른 광의 투과 및 차단이 효율적으로 이루어질 것을 필요로 되며 이를 위하여 액정층의 두께가 균일해야 된다.On the other hand, since the liquid crystal display element is an image display element, it is necessary to have excellent characteristics such as brightness and contrast. This requires efficient transmission and blocking of light depending on whether an electric field is applied, and for this purpose, the thickness of the liquid crystal layer must be uniform.
그러나, 종래의 방법에 따르면, 액정층의 두께가 균일한 액정표시소자 패널을 제조하기 어려울 뿐만 아니라, 형성된 액정층의 두께가 변형될 수 있다는 문제점이 있다.However, according to the conventional method, it is difficult to manufacture a liquid crystal display panel having a uniform thickness of the liquid crystal layer, and there is a problem that the thickness of the formed liquid crystal layer may be deformed.
제1도를 참조하여 설명하면, 액정표시소자 패널을 제조하기 위하여 능동회로부(2), 투명전극(3), 배향막(4) 등이 구비된 상부기판(1)과 하부전극(3'), 배향막(4'), 블랙매트리스(5), 칼라필터(6) 등이 구비된 하부기판(1')을 준비한다. 이어, 하부기판(1') 위에 스페이서(미도시)를 도포하고, 기판의 가장자리를 실프린팅(seal printing)한 다음, 상부기판을 하부기판 위에 놓고 압착하여 접합한다. 이 때, 기판사이에는 액정 물질이 채워질 갭이 형성된다. 따라서, 균일한 두께의 액정층(8)을 갖기 위하여 균일한 두께의 갭을 형성할 필요가 있다.Referring to FIG. 1, the upper substrate 1 and the lower electrode 3 ′ provided with the active circuit unit 2, the transparent electrode 3, the alignment layer 4, and the like for manufacturing a liquid crystal display device panel, A lower substrate 1 'provided with an alignment film 4', a black mattress 5, a color filter 6, and the like is prepared. Subsequently, a spacer (not shown) is coated on the lower substrate 1 ', the edge of the substrate is sealed printed, and then the upper substrate is placed on the lower substrate and pressed to bond. At this time, a gap is formed between the substrates to fill the liquid crystal material. Therefore, in order to have the liquid crystal layer 8 of uniform thickness, it is necessary to form the gap of uniform thickness.
그러나, 기판의 가장자리 부분만이 접착되어 있는 액정표시소자 패널은 그 액정층의 두께가 시간이 흐르면서 불균일해지거나 또는 액정물질이 새어나갈 수 있다는 문제점이 있다. 기판의 가장자리를 접착시키는 밀봉재가 시간이 흐르면서 떨어질 수 있기 때문이다. 대형 패널의 경우, 밀봉재가 떨어지지는 않을지라도, 기판이 변형되어 그 중앙부분 쪽의 간격이 벌어지므로 두께가 불균일해질 수도 있다. 이와 같이, 종래의 방법에 따라 제조되는 액정표시소자 패널은 액정층의 두께가 불균일하여, 스크린의 휘도나 콘트라스트와 같은 특성이 좋지 않다는 문제점이 있었다.However, a liquid crystal display panel in which only the edge portion of the substrate is bonded has a problem in that the thickness of the liquid crystal layer may become uneven over time or the liquid crystal material may leak out. This is because the sealant that bonds the edges of the substrate may drop over time. In the case of a large panel, even if the sealing material is not dropped, the thickness may be uneven because the substrate is deformed and the gap between the center portions thereof is widened. As described above, the liquid crystal display device panel manufactured according to the conventional method has a problem in that the thickness of the liquid crystal layer is nonuniform, so that characteristics such as brightness and contrast of the screen are not good.
한편, 사무기기의 발달에 따라 액정표시소자는 펜입력 기능을 채용하는 것이 일반화되고 있다. 이 경우, 액정표시소자는 펜 등에 의해 직접 자극을 받을시 유동성이 강한 액정의 배열이 흩어지며, 흩어진 배열이 회복하는데 많은 시간이 걸린다는 문제점이 있다. 특히, 강유전성 액정을 채용하는 표시소자에 있어서는 충격에 의해 표시 성능 자체가 손상되어 회복하기 힘든 경우도 있어서, 펜입력 수단을 별도의 유리에 형성해야 하는 문제점이 있다.On the other hand, with the development of office equipment, it has become common for liquid crystal display devices to adopt a pen input function. In this case, when the liquid crystal display is directly stimulated by a pen or the like, an array of liquid crystals having high fluidity is scattered, and the scattered array takes a long time to recover. In particular, in a display element employing a ferroelectric liquid crystal, the display performance itself may be difficult to recover due to an impact, and thus there is a problem in that a pen input means must be formed on a separate glass.
따라서, 본 발명은 상기한 문제점을 해결하여 액정층의 두께가 균일하여 휘도 및 콘트라스트 특성이 우수하며, 액정 배열의 흩어짐 현상이 크게 감소된 액정표시소자 패널을 제공하는 것이다.Accordingly, the present invention is to solve the above problems to provide a liquid crystal display panel with a uniform thickness of the liquid crystal layer is excellent in brightness and contrast characteristics, the scattering phenomenon of the liquid crystal array is greatly reduced.
상기 문제점을 해결하기 위하여 본 발명에서는,In the present invention to solve the above problems,
투명전극 및 배향막을 갖는 상부 기판;An upper substrate having a transparent electrode and an alignment layer;
블랙매트릭스, 칼라필터, 투면전극 및 배향막을 갖는 하부 기판; 및A lower substrate having a black matrix, a color filter, a projection electrode, and an alignment layer; And
상기 상,하부 기판 사이에 개재되어 있는 액정층을 포함하는 액정표시소자 패널에 있어서,In the liquid crystal display device panel comprising a liquid crystal layer interposed between the upper and lower substrates,
상기 액정층 내에는 상기 두 개의 기판을 접착시키는 고분자구가 분산되어 있는 것을 특징으로 하는 액정표시소자 패널이 제공된다.A liquid crystal display panel is provided in the liquid crystal layer, wherein the polymer spheres adhering the two substrates are dispersed.
본 발명의 다른 목적은 상술한 특성의 액정액정표시소자 패널의 제조 방법을 제공하는 것이다.Another object of the present invention is to provide a method for producing a liquid crystal liquid crystal display device panel having the above characteristics.
상기 다른 목적을 달성하기 위하여 본 발명에서는,In order to achieve the above another object, in the present invention,
투명전극 및 배향막 갖는 상부 기판을 제조하는 단계;Manufacturing an upper substrate having a transparent electrode and an alignment layer;
블랙매트릭스, 칼라필터 및 투명전극을 갖는 하부 기판을 제조하는 단계;Manufacturing a lower substrate having a black matrix, a color filter, and a transparent electrode;
상기 단계에서 제조된 두 기판을 그 사이에 셀 갭이 형성되도록 접합하는 단계;Bonding the two substrates prepared in the step to form a cell gap therebetween;
액정 및 고분자 전구체를 포함하는 액정층용 조성물을 상기 셀 갭내에 주입하는 단계; 및Injecting a liquid crystal layer composition comprising a liquid crystal and a polymer precursor into the cell gap; And
상기 고분자 전구체를 경화시키는 단계를 포함하는 것을 특징으로 하는 액정표시소자 패널의 제조 방법이 제공된다.Provided is a method of manufacturing a liquid crystal display device panel, comprising curing the polymer precursor.
제2A 및 2B도는 본 발명의 일실시예에 따른 액정표시소자 패널의 제조 공정을 개략적으로 나타내는 단면도이다. 도면을 참조하여 본 발명에 대하여 상세하게 설명하기로 한다.2A and 2B are cross-sectional views schematically illustrating a manufacturing process of a liquid crystal display device panel according to an exemplary embodiment of the present invention. The present invention will be described in detail with reference to the drawings.
본 발명에서는 두 개의 기판을 접합하여 갭(18)을 형성하는 단계까지는 일반적인 방법을 통하여 이루어진다. 즉, 하부전극(13'), 배향막(14'), 블랙매트릭스(15), 칼라필터(16) 등이 구비된 하부기판(11') 위에 스페이서(미도시)를 도포하고, 기판의 가장자리를 실프린팅(seal printing)한 다음, 그 위에 능동회로부(12), 투명전극(13), 배향막(14) 등이 구비된 상부기판(11)을 올려 놓고 접합하여 갭(18)이 형성된 패널을 제조한다(제2A도).In the present invention, the step of joining two substrates to form a gap 18 is performed through a general method. That is, a spacer (not shown) is coated on the lower substrate 11 'provided with the lower electrode 13', the alignment layer 14 ', the black matrix 15, the color filter 16, and the like, and the edge of the substrate is applied. After sealing printing, a panel having a gap 18 is formed by placing the upper substrate 11 provided with the active circuit unit 12, the transparent electrode 13, the alignment layer 14, and the like on it. (Figure 2A).
이어, 액정 및 고분자 전구체를 포함하는 액정층용 조성물을 상기 갭(18) 내에 주입한 다음, 고분자 전구체를 중합시킨다. 중합 반응은 열 또는 자외선을 패널 내에 조사함으로써 이루어지며, 중합되는 고분자 성분은 액정으로부터 상분리된다. 이 때, 고분자 성분은 액정과의 계면장력이 차이 때문에 구적의 형태로 된다.Subsequently, a liquid crystal layer composition including a liquid crystal and a polymer precursor is injected into the gap 18, and then the polymer precursor is polymerized. The polymerization reaction is carried out by irradiating heat or ultraviolet rays into the panel, and the polymer component to be polymerized is phase separated from the liquid crystal. At this time, the polymer component is in the form of quadrature due to the difference in the interfacial tension with the liquid crystal.
본 발명에 있어서, 액정은 통상적으로 사용되는 것이라면 특별한 제한은 없으며, 네마틱 액정, 스메틱 액정, 강유전성 액정, 콜레스테릭 액정 등을 단독 또는 혼합하여 사용할 수 있다.In the present invention, the liquid crystal is not particularly limited as long as it is commonly used, nematic liquid crystal, smectic liquid crystal, ferroelectric liquid crystal, cholesteric liquid crystal and the like can be used alone or in combination.
본 발명에 따라, 액정층용 조성물에 첨가되는 고분자 전구체는 자외선 경화성 물질로서, 미경화 상태에서 액정 물질과 상용성이 좋아 잘 혼합되고, 경화 후에는 액정과 상용성이 없어 액정/고분자의 2성분으로 완전히 상분리될 수 있는 것이 사용된다. 또한 열 또는 광의 조사에 따라 스스로 반응하여 고분자로 되거나, 경화개시제에 의해 반응이 개시될 수 있는 것을 사용할 수 있어야 한다. 이러한 특성을 만족하는 고분자 전구체로서 아크릴 화합물, 에폭시 화합물 등이 있으며, 수종의 단량체 및 올리고머의 혼합물이 사용되는 것이 바람직하다.According to the present invention, the polymer precursor added to the composition for the liquid crystal layer is an ultraviolet curable material, and is well mixed with the liquid crystal material in an uncured state and mixed well. Those that can be completely phase separated are used. In addition, it should be possible to use a polymer that reacts itself by irradiation with heat or light, or a reaction that can be initiated by a curing initiator. As the polymer precursor that satisfies these characteristics, there are an acrylic compound, an epoxy compound, and the like, and a mixture of several monomers and oligomers is preferably used.
이러한 고분자 전구체는 미경화 전에는 액정에 용해되어 있다가 자외선 조사 또는 가열 등에 의해 점차 중합되면서 액정으로부터 상분리된다. 중합반응이 종료하면, 고분자(19)는 구형으로 액정층(20)중에 분산되어 있다. 이러한 구형의 고분자는 상,하 기판(11, 11') 간에 강한 접착력을 부여하여, 기판의 중간 부분이 볼록해지는 현상을 방지해주는 역할을 한다. 또한, 기판 가장자리에만 도포되어 있는 밀봉재의 접착력을 보완해주는 역할을 한다.The polymer precursor is dissolved in the liquid crystal before being uncured, and then phase-separated from the liquid crystal while gradually polymerizing by ultraviolet irradiation or heating. After the polymerization reaction is completed, the polymer 19 is spherically dispersed in the liquid crystal layer 20. The spherical polymer provides strong adhesion between the upper and lower substrates 11 and 11 ', thereby preventing the middle portion of the substrate from being convex. In addition, it serves to complement the adhesion of the sealing material is applied only to the substrate edge.
한편, 고분자 전구체가 중합되어 상분리되면서, 액정(17)은 본래의 성질을 나타내게 되어 배향막의 종류 및 러빙 방향에 따라 배열하게 된다(제2B도).On the other hand, while the polymer precursor is polymerized and phase-separated, the liquid crystal 17 exhibits its original properties and is arranged according to the type of the alignment film and the rubbing direction (FIG. 2B).
본 발명에 따라서, 이러한 용도로 첨가되는 고분자 전구체의 함량은 액정층용 조성물에 대해 1 내지 20중량%가 바람직하다. 1중량% 미만의 경우에는 본 발명의 효과가 미미하며, 20중량% 초과시에는 과다한 고분자로 인해 액정의 구동특성이 저하되기 때문이다.According to the present invention, the content of the polymer precursor added for this purpose is preferably 1 to 20% by weight based on the composition for the liquid crystal layer. If the amount is less than 1% by weight, the effect of the present invention is insignificant, and if it exceeds 20% by weight, it is because the driving characteristics of the liquid crystal are lowered due to the excessive polymer.
또한, 경화개시제는 사용되는 고분자 전구체에 따라 결정되며, 일반적으로 아조비스이소부티로니트릴(AIBN)이 바람직하다.In addition, the curing initiator is determined by the polymer precursor used, and generally azobisisobutyronitrile (AIBN) is preferable.
이하, 실시예를 통하여 본 발명의 효과를 보다 구체적으로 설명하기로 하되,본 발명이 반드시 이에 한정되는 것은 아니다.Hereinafter, the effects of the present invention will be described in more detail with reference to Examples, but the present invention is not necessarily limited thereto.
<실시예><Example>
머크사의 네마틱 액정인 ZLI-3417 및 2-에틸헥실아크릴레이트, 2-에톡시비스페놀-A 디아크릴레이트 및 선경 UCB사의 EB-230(우레판디아크릴레이트 올리고머)로 이루어진 고분자 전구체(7/3/3의 중량비)를 100:5의 중량비로 혼합하였다. 혼합물을 40℃까지 가열하여 균일한 용액으로 만든 다음, 용액에 대해 1중량%의 AIBN을 첨가하여 용해시켜 액정층용 조성물을 얻었다. 진공 주입법을 이용하여, 얻어진 조성물을 기판 사이에 형성되어 있는 갭 내에 주입하였다. 이어, 패널을 80℃에서 2시간 동안 유지한 다음, 상온까지 냉각하여 액정층을 갖는 액정표시소자 패널을 제조하였다.Polymer precursor consisting of Merck's nematic liquid crystals ZLI-3417 and 2-ethylhexyl acrylate, 2-ethoxybisphenol-A diacrylate and EB-230 (urepandiacrylate oligomer) of UCB (7/3 / Weight ratio 3) was mixed at a weight ratio of 100: 5. The mixture was heated to 40 ° C. to make a homogeneous solution, and then dissolved by adding 1% by weight of AIBN to the solution to obtain a liquid crystal layer composition. The obtained composition was injected into the gap formed between the board | substrates using the vacuum injection method. Subsequently, the panel was maintained at 80 ° C. for 2 hours, and then cooled to room temperature to prepare a liquid crystal display device panel having a liquid crystal layer.
제조된 패널에 대한 전기 광학적 특성 평가를 실시하였는데, 문턱 전압 2.3Vrms, 응답 속도 55ms, 콘트라스트비 100:1 이상이었다. 또한, 1.2atm, 상대습도 100%의 조건하에서 내압 내습 평가(pressure cooking test)를 실시하였는데, 2시간 후에 밀봉부가 떨어졌다.The electro-optical characteristics of the manufactured panels were evaluated, with threshold voltages of 2.3 Vrms, response speed of 55 ms, and contrast ratio of 100: 1 or more. In addition, a pressure cooking test was performed under conditions of 1.2 atm and a relative humidity of 100%, but the sealing part dropped after 2 hours.
<비교예>Comparative Example
고분자 전구체와 AIBN을 포함하지 않은 ZLI-3417만을 실시예와 동일한 방법으로 갭 내에 주입하여 액정층을 갖는 액정표시소자 패널을 제조하였다.Only ZLI-3417 containing no polymer precursor and AIBN was injected into the gap in the same manner as in Example to prepare a liquid crystal display panel having a liquid crystal layer.
제조된 패널에 대한 전기 광학적 특성 평가를 실시하였는데, 문턱 전압 2.3Vrms, 응답 속도 45ms, 콘트라스트비 100:1 이상이었다. 또한, 1.2atm, 상대습도 100%의 조건하에서 내압 내습 평가를 실시하였는데, 1시간 후에 밀봉부가 떨어졌다.The electro-optical characteristics of the manufactured panels were evaluated, with threshold voltages of 2.3 Vrms, response speed of 45 ms, and contrast ratio of 100: 1 or more. In addition, the pressure resistance and moisture resistance evaluations were performed under conditions of 1.2 atm and a relative humidity of 100%, but the sealing portion fell after 1 hour.
실시예와 비교예로부터, 액정층 내에 고분자 전구체가 형성되어 있는 액정표시소자 패널은 종래의 방법에 따라 제조된 패널에 비해 전기광학적 특성이 비슷하면서도, 기판 사이의 접착력이 2배 정도 우수함을 알 수 있다. 따라서, 본 발명의 따라 제조되는 액정표시소자 패널은 액정층 두께의 균일성이 장시간 유지되므로, 그 수명이 길다는 장점이 있다. 또한, 고분자구에 의해 액정 배열의 흩어짐 현상이 크게 감소되어 외부의 충격에 의한 액정 배열의 손상 문제가 매우 감소되었기 때문에, 펜입력 수단의 채용에도 유리하다는 장점이 있다.From the examples and the comparative examples, it can be seen that the liquid crystal display panel in which the polymer precursor is formed in the liquid crystal layer has similar electro-optic characteristics as compared to the panel manufactured according to the conventional method, but has about twice the adhesive strength between the substrates. have. Therefore, the liquid crystal display device panel manufactured according to the present invention has the advantage that the uniformity of the liquid crystal layer thickness is maintained for a long time, so that its life is long. In addition, since the scattering phenomenon of the liquid crystal array is greatly reduced by the polymer spheres, and the problem of damage to the liquid crystal array due to external impact is greatly reduced, there is an advantage that it is advantageous to employ the pen input means.
제1도는 TFT 소자를 채용하는 일반적인 액정표시소자 패널의 구성도이다.1 is a configuration diagram of a general liquid crystal display element panel employing a TFT element.
제2A 및 2B도는 본 발명의 일실시예에 따른 액정표시소자 패널의 제조 공정을 개략적으로 나타내는 단면도이다.2A and 2B are cross-sectional views schematically illustrating a manufacturing process of a liquid crystal display device panel according to an exemplary embodiment of the present invention.
* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
1,1',11,11'. 기판 2,12. 능동 회로부1,1 ', 11,11'. Substrate 2,12. Active circuit
3,3',13,13'. 투명전극 4,4',14,14'. 배향막3,3 ', 13,13'. Transparent electrodes 4,4 ', 14,14'. Alignment film
5,15. 블랙매트릭스 6,16'. 칼라필터5,15. Black Matrix 6,16 '. Color filter
7,17. 액정 8,20. 액정층7,17. Liquid crystal 8,20. Liquid crystal layer
18. 갭 19. 고분자구18. Gap 19. Polymer sphere
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| JPH04194823A (en) * | 1990-11-22 | 1992-07-14 | Hitachi Ltd | Liquid crystal display device and manufacture thereof |
| JPH0530996A (en) * | 1991-07-29 | 1993-02-09 | Konica Corp | Measurement of inhibition activity of serine proteinase inhibitor |
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| JPH04194823A (en) * | 1990-11-22 | 1992-07-14 | Hitachi Ltd | Liquid crystal display device and manufacture thereof |
| JPH0530996A (en) * | 1991-07-29 | 1993-02-09 | Konica Corp | Measurement of inhibition activity of serine proteinase inhibitor |
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