TWI453232B - Alignment layer material, alignment layer, birefringent liquid crystal film and manufacturing method thereof - Google Patents
Alignment layer material, alignment layer, birefringent liquid crystal film and manufacturing method thereof Download PDFInfo
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Description
本發明涉及液晶顯示面板領域，尤其涉及配向層材料、配向層、雙折射液晶薄膜及其製造方法。 The present invention relates to the field of liquid crystal display panels, and more particularly to an alignment layer material, an alignment layer, a birefringent liquid crystal film, and a method of fabricating the same.
隨著數字網絡科技的發展，在日常生活中的各個層面中，液晶顯示(Liquid Crystal Display，LCD)面板產業除了原本以筆記本電腦(Notebook，NB)作為核心應用外，更朝向包括液晶螢幕、可攜帶式消費型影音產品、移動電話及液晶電視機等方向的市場應用全力發展。 With the development of digital network technology, in the various aspects of daily life, the liquid crystal display (LCD) panel industry, in addition to the notebook computer (Notebook, NB) as the core application, is more oriented to include the LCD screen, The market applications of portable consumer audio and video products, mobile phones and LCD TVs are fully developed.
由於不同的市場需求，目前對液晶顯示面板自身的視角、對比度、顯示均勻性等的要求也相應提高。為解決上述問題，業界對液晶顯示面板的製造材料及製造製程不斷提出新的方案。而在液晶顯示面板中，對液晶配向控制技術、配向層評估技術的研究直接與上述的問題的改善相關，因此，配向層的製造控制技術非常重要。 Due to different market demands, the requirements for the viewing angle, contrast, display uniformity, etc. of the liquid crystal display panel are also correspondingly improved. In order to solve the above problems, the industry has continuously proposed new solutions for the manufacturing materials and manufacturing processes of liquid crystal display panels. In the liquid crystal display panel, the research on the liquid crystal alignment control technology and the alignment layer evaluation technology is directly related to the improvement of the above problems. Therefore, the manufacturing control technology of the alignment layer is very important.
一般而言，液晶分子排列方式主要分為液晶分子長軸平行於配向層，稱為Homogeneous Alignment；長軸垂直於配向層上，稱為 Hetergeneous或Vertical Alignment；但在液晶螢幕之應用上，液晶分子與配向層表面呈某一角度的傾斜(即預傾角，Pretilt Angle)，如此才能達到均一配向的效果。該預傾角主要取決於配向層的物化作用力，如氫鍵、(Hydrogenbond)、凡得瓦力(vanderWaals force)、Dipole-dipoleforce以及機械力效應，即溝槽(Groove)或配向層表面型態。 In general, the arrangement of liquid crystal molecules is mainly divided into a long axis of liquid crystal molecules parallel to the alignment layer, called Homogeneous Alignment; the long axis is perpendicular to the alignment layer, called Hetergeneous or Vertical Alignment; However, in the application of liquid crystal screen, the liquid crystal molecules are inclined at an angle to the surface of the alignment layer (ie, Pretilt Angle), so as to achieve a uniform alignment effect. The pretilt angle mainly depends on the physicochemical force of the alignment layer, such as hydrogen bonding, (hydrogenbond), vanderWaals force, Dipole-dipoleforce, and mechanical force effects, ie, Groove or alignment layer surface type. .
在液晶顯示面板內，液晶分子必須朝著某一特定方向排列，才能達到顯示效果，而欲使液晶分子產生均一穩定排列有賴於液晶配向技術，因為液晶層與配向層的接口具有很強的粘附力，在電場關閉後液晶憑藉該粘附力而恢復到原來的排列。 In the liquid crystal display panel, the liquid crystal molecules must be aligned in a certain direction to achieve the display effect, and the uniform alignment of the liquid crystal molecules depends on the liquid crystal alignment technology, because the interface between the liquid crystal layer and the alignment layer has strong adhesion. With the force attached, after the electric field is turned off, the liquid crystal returns to the original arrangement by the adhesion.
液晶配向技術中生產製造配向層的主要方式包括離子束配向、蒸鍍氧化矽及摩擦配向技術等。其中，離子束配向及蒸鍍氧化矽等方式都存在製造製程量產難、成本高的問題。 The main methods for producing the alignment layer in the liquid crystal alignment technology include ion beam alignment, vapor deposition of ruthenium oxide, and rubbing alignment technology. Among them, ion beam alignment and vapor deposition of ruthenium oxide have problems in that the manufacturing process is difficult to produce and the cost is high.
本發明解決上述技術問題的方案是提供了一種配向層、雙折射液晶薄膜及其配向層材料及製造方法。 The solution to the above technical problem is to provide an alignment layer, a birefringent liquid crystal film, an alignment layer material thereof, and a manufacturing method.
本發明提供了一種配向層材料，該配向層材料用於製造配向層，配向層材料包括一種聚合物，聚合物具有如下分子結構式：
根據本發明的一較佳實施例，聚合物為多種化合物經過聚合反應 而成，其中該多種化合物包括：丙烯酸羥乙酯、3-異氰酸酯基亞甲基-3，5，5-三甲基環己基異氰酸酯、雙酚基丙烷及1.4-環己二醇。 According to a preferred embodiment of the invention, the polymer is polymerized for a plurality of compounds The plurality of compounds include: hydroxyethyl acrylate, 3-isocyanatemethylene-3,5,5-trimethylcyclohexyl isocyanate, bisphenolylpropane and 1.4-cyclohexanediol.
根據本發明的一較佳實施例，丙烯酸羥乙酯、3-異氰酸酯基亞甲基-3，5，5-三甲基環己基異氰酸酯、雙酚基丙烷及1.4-環己二醇的摩爾比為2：16：12：3。 According to a preferred embodiment of the present invention, the molar ratio of hydroxyethyl acrylate, 3-isocyanatemethylene-3,5,5-trimethylcyclohexyl isocyanate, bisphenolylpropane and 1.4-cyclohexanediol It is 2:16:12:3.
根據本發明的一較佳實施例，該配向層材料還包括光敏劑，光敏劑在配向層材料中的濃度為質量分數0.1%-1%。 According to a preferred embodiment of the present invention, the alignment layer material further comprises a photosensitizer, and the concentration of the photosensitizer in the alignment layer material is 0.1% to 1% by mass.
根據本發明的一較佳實施例，該配向層材料還包括引發劑。 According to a preferred embodiment of the invention, the alignment layer material further comprises an initiator.
根據本發明的一較佳實施例，引發劑選自2-羥基-2-甲基-1-苯基丙酮、1-羥基環己基苯基甲酮以及2-甲基-2-(4-嗎啉基)-1-[4-(甲硫基)苯基]-1-丙酮中的一種或多種。 According to a preferred embodiment of the invention, the initiator is selected from the group consisting of 2-hydroxy-2-methyl-1-phenylacetone, 1-hydroxycyclohexyl phenyl ketone, and 2-methyl-2-(4-? One or more of phenyl)-1-[4-(methylthio)phenyl]-1-propanone.
本發明還提供了一種配向層，配向層包括一種配向層材料，該配向層材料用於製造配向層，配向層材料包括一種聚合物，該聚合物具有如下分子結構式：
本發明還提供了一種雙折射液晶薄膜，其包括配向層及液晶單體，配向層相對設置，液晶單體設置在配向層之間，配向層包括一種配向層材料，該配向層材料用於製造配向層，配向層材料包括
一種聚合物，該聚合物具有如下分子結構式：
本發明還提供了一種配向層的製造方法，配向層的製造方法包括以下步驟：a.提供一基材以及配向層材料，該配向層材料包括一種聚合物，聚合物具有如下分子結構式：
根據本發明的一較佳實施例，步驟c中採用紫外光照射固化塗佈在基材表面的配向層材料。 In accordance with a preferred embodiment of the present invention, the alignment layer material coated on the surface of the substrate is cured by ultraviolet light irradiation in step c.
根據本發明的一較佳實施例，步驟c中採用的紫外光的波長能量為100 *106 J/cm2-1000 *106 J/cm2。 According to a preferred embodiment of the invention, the ultraviolet light used in step c has a wavelength energy of from 100 * 106 J/cm 2 to 1000 * 106 J/cm 2 .
根據本發明的一較佳實施例，步驟d中的配向技術為摩擦配向技術。 According to a preferred embodiment of the invention, the alignment technique in step d is a friction alignment technique.
根據本發明的一較佳實施例，所述的基材是PET材料。 According to a preferred embodiment of the invention, the substrate is a PET material.
本發明還提供了一種雙折射液晶薄膜的製造方法，該雙折射液晶薄膜的製造方法包括以下步驟：a.提供配向層，該配向層包括一種聚合物，聚合物具有如下分子結構式：
相較於現有技術，本發明的配向層、雙折射液晶薄膜及其配向層材料成膜不受溫度的限制，適合於大量塗佈，且具有高透過性，其特殊的溝槽結構和分子鍵極性力能增加其對液晶的配向。同時該本發明的配向層、雙折射液晶薄膜的製造方法製程簡單，利於量產且成本較低，且方便於液晶薄膜技術實現大批量製作製程。 Compared with the prior art, the alignment layer, the birefringent liquid crystal film and the alignment layer material thereof of the present invention are formed into a film which is not limited by temperature, is suitable for mass coating, and has high permeability, and has special groove structure and molecular bond. Polarity increases its alignment to the liquid crystal. At the same time, the manufacturing method of the alignment layer and the birefringent liquid crystal film of the invention is simple in process, convenient in mass production and low in cost, and convenient for the liquid crystal film technology to realize a mass production process.
S11‧‧‧步驟S11 S11‧‧‧Step S11
S12‧‧‧步驟S12 S12‧‧‧Step S12
S13‧‧‧步驟S13 S13‧‧‧Step S13
S14‧‧‧步驟S14 S14‧‧‧Step S14
S21‧‧‧步驟S21 S21‧‧‧Step S21
S22‧‧‧步驟S22 S22‧‧‧Step S22
S23‧‧‧步驟S23 S23‧‧‧Step S23
1‧‧‧絨布滾輪 1‧‧‧Flannel roller
2‧‧‧配向層 2‧‧‧Alignment layer
3‧‧‧配向層 3‧‧‧Alignment layer
4‧‧‧液晶單體 4‧‧‧LCD monomer
5‧‧‧激光束 5‧‧‧Laser beam
6‧‧‧第一偏振片 6‧‧‧First polarizer
7‧‧‧TN盒 7‧‧‧TN box
8‧‧‧第二偏振片 8‧‧‧Second polarizer
為了更清楚地說明本創作實施例中的技術方案，下面將對實施例描述中所需要使用的圖式作簡單地介紹，顯而易見地，下面描述中的圖式僅僅是本創作的一些實施例，對於本領域普通具有通常知識者來講，在不付出創造性勞動的前提下，還可以根據這些圖式獲得其他的圖式。其中：第1圖是本發明一實施例的配向層材料中的聚合物的宏觀分子結構示意圖；第2圖是本發明一實施例的配向層的製造方法流程圖； 第3圖是第2圖所示配向層製造方法中塗佈裝置示意圖；第4圖是第1圖所示配向層的聚合物中HEA交聯方式的示意圖；第5圖是第2圖所示配向層製造方法中摩擦配向製程示意圖；第6圖是本發明一實施例的雙折射液晶薄膜的製造方法流程圖；第7圖是第6圖所示雙折射液晶薄膜的製造方法中雙折射液晶薄膜側面示意圖；以及第8圖是本發明一實施例的TN盒旋光性的檢測方法示意圖。 In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other schemas can be obtained based on these schemas without creative labor. 1 is a schematic view showing a macroscopic molecular structure of a polymer in an alignment layer material according to an embodiment of the present invention; and FIG. 2 is a flow chart showing a method for manufacturing an alignment layer according to an embodiment of the present invention; Fig. 3 is a schematic view showing a coating apparatus in the method for producing an alignment layer shown in Fig. 2; and Fig. 4 is a schematic view showing a HEA crosslinking method in a polymer of the alignment layer shown in Fig. 1. Fig. 5 is a view showing Fig. 2 FIG. 6 is a flow chart showing a method for manufacturing a birefringent liquid crystal film according to an embodiment of the present invention; and FIG. 7 is a birefringent liquid crystal in a method for manufacturing a birefringent liquid crystal film according to FIG. 6; A schematic side view of the film; and FIG. 8 is a schematic view showing a method of detecting the optical rotation of the TN box according to an embodiment of the present invention.
下面結合圖式對本發明進行詳細說明。 The invention will now be described in detail in conjunction with the drawings.
本發明提供了一種配向層材料，該配向層材料用於製造配向層，該配向層材料包括一種聚合物，該聚合物為多種化合物經過聚合反應而成，其中該多種化合物包括：丙烯酸羥乙酯(HEA)、3-異氰酸酯基亞甲基-3，5，5-三甲基環己基異氰酸酯(IPDI)、雙酚基丙烷(BPA)及1.4-環己二醇(Cyclohexanediol)。在本發明的一較佳實施例中，該聚合反應中採用的丙烯酸羥乙酯、3-異氰酸酯基亞甲基-3，5，5-三甲基環己基異氰酸酯、雙酚基丙烷及1.4-環己二醇的摩爾比為2：16：12：3。 The present invention provides an alignment layer material for producing an alignment layer, the alignment layer material comprising a polymer obtained by polymerizing a plurality of compounds, wherein the plurality of compounds include: hydroxyethyl acrylate (HEA), 3-isocyanatemethylene-3,5,5-trimethylcyclohexyl isocyanate (IPDI), bisphenolylpropane (BPA) and 1.4-cyclohexanediol. In a preferred embodiment of the invention, the hydroxyethyl acrylate, 3-isocyanate methylene-3,5,5-trimethylcyclohexyl isocyanate, bisphenol propane and 1.4- used in the polymerization are used. The molar ratio of cyclohexanediol is 2:16:12:3.
該聚合物具有如下分子結構式，其平均分子量約6000-8000：
該聚合物具有如下分子鏈：HEA-IPDI-BPA-IPDI-Cyclohexanediol-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-Cyclohexanediol-IPDI-BPA-HEA。 The polymer has the following molecular chains: HEA-IPDI-BPA-IPDI-Cyclohexanediol-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-BPA- IPDI-BPA-IPDI-BPA-IPDI-BPA-IPDI-Cyclohexanediol-IPDI-BPA-HEA.
第1圖示出了該聚合物的宏觀分子結構示意圖。 Figure 1 shows a schematic diagram of the macromolecular structure of the polymer.
該配向層材料還可以進一步包括添加劑，該添加劑包括染料、流平劑、增塑劑、光敏劑、引發劑和除泡劑等。其中，光敏劑在配向層材料中的濃度可達質量分數0.1%-1%，引發劑則可選自2-羥基-2-甲基-1-苯基丙酮、1-羥基環己基苯基甲酮以及2-甲基-2-(4-嗎啉基)-1-[4-(甲硫基)苯基]-1-丙酮中的一種或多種。 The alignment layer material may further include an additive including a dye, a leveling agent, a plasticizer, a photosensitizer, an initiator, a defoaming agent, and the like. Wherein, the concentration of the photosensitizer in the material of the alignment layer is up to 0.1% to 1% by mass, and the initiator may be selected from the group consisting of 2-hydroxy-2-methyl-1-phenylacetone and 1-hydroxycyclohexylphenyl One or more of a ketone and 2-methyl-2-(4-morpholinyl)-1-[4-(methylthio)phenyl]-1-propanone.
本發明還提供了一種配向層，該配向層包括本發明所述的配向層材料。 The present invention also provides an alignment layer comprising the alignment layer material of the present invention.
本發明還提供了一種雙折射液晶薄膜，該雙折射液晶薄膜包括配向層及液晶單體，配向層包括本發明所述的配向層材料。 The present invention also provides a birefringent liquid crystal film comprising an alignment layer and a liquid crystal monomer, and the alignment layer comprises the alignment layer material of the present invention.
本發明還提供了一種配向層的製造方法，如第2圖所示，該配向層的製造方法包括以下步驟： The invention also provides a method for manufacturing an alignment layer. As shown in FIG. 2, the method for manufacturing the alignment layer comprises the following steps:
步驟S11，提供一基材以及配向層材料。具體而言，提供一基材，該基材可以是一表面平整的用以製造液晶顯示面板的矩形玻璃平板，其包括一塗佈表面。取向膜的基材可以是PET材料。 In step S11, a substrate and an alignment layer material are provided. Specifically, a substrate is provided which may be a flat surface flat glass plate for manufacturing a liquid crystal display panel including a coated surface. The substrate of the oriented film may be a PET material.
提供配向層材料，該配向層材料為如本發明所述的配向層材料，且包括一種如本發明所述的聚合物，該聚合物具有如下分子結構
式：
步驟S12，將配向層材料塗佈至基材的一表面。 In step S12, the alignment layer material is applied to a surface of the substrate.
具體而言，採用如第3圖所示的塗佈裝置，採用滾輪印刷塗佈製程塗佈該配向層材料於該基材的塗佈表面，塗佈厚度0.1微米，使得該配向層材料呈均勻層狀設置。當然在本實施方式中，該配向層材料的塗佈還可以通過旋轉塗佈、滾動塗佈、浸漬塗佈、噴霧塗佈或凹版塗佈等製程實現。 Specifically, using the coating device as shown in FIG. 3, the alignment layer material is coated on the coated surface of the substrate by a roller printing coating process, and the coating thickness is 0.1 micrometer, so that the alignment layer material is uniform. Layered setting. Of course, in the present embodiment, the coating of the alignment layer material can also be achieved by a process such as spin coating, roll coating, dip coating, spray coating or gravure coating.
步驟S13，固化塗佈在基材表面的配向層材料。 In step S13, the alignment layer material coated on the surface of the substrate is cured.
在本實施例中，可以採用紫外光照射固化的方式對塗佈在基材的表面的配向層材料進行固化，當然在另一實施例中也可採取其他合適的固化方式。具體而言，提供一紫外光源系統，該紫外光源系統可以是一高壓汞燈，其用以發出紫外光束。調整該紫外光源系統產生的紫外光束的波長能量為100 *106 J/cm2-1000 *106 J/cm2，將紫外光束均勻照射至位於該基材表面的配向層材料，使得該配向層材料互相交聯並固化。例如，可以在距離配向層材料20cm處放置2kw紫外燈，採用固化能量1000 *106 J/cm2固化幾十秒內至5分鐘，以完成固化流程。 In this embodiment, the alignment layer material coated on the surface of the substrate may be cured by ultraviolet light irradiation, although other suitable curing methods may be employed in another embodiment. Specifically, an ultraviolet light source system is provided, which may be a high pressure mercury lamp for emitting an ultraviolet light beam. Adjusting the wavelength energy of the ultraviolet light beam generated by the ultraviolet light source system to be 100 * 106 J/cm2-1000 * 106 J/cm 2 , uniformly irradiating the ultraviolet light beam to the alignment layer material on the surface of the substrate, so that the alignment layer materials are mutually intersected Combined and cured. For example, a 2 kw UV lamp can be placed at a distance of 20 cm from the alignment layer material, and cured at a curing energy of 1000 * 106 J/cm 2 for several tens of seconds to 5 minutes to complete the curing process.
由於PET材料的基材不耐高溫，在高溫的情况下會變形，而本發明的紫外固化配向層材料可以在低溫下就完成對取向膜的固化， 對取向膜製程的改善尤為重要。 Since the substrate of the PET material is not resistant to high temperatures, it will be deformed at a high temperature, and the ultraviolet curable alignment layer material of the present invention can complete the curing of the alignment film at a low temperature. Improvements in the alignment film process are particularly important.
採用紫外固化取向膜的固化時間大大縮短，相較於現有的PI取向膜應該是由PI預烘烤以及PI堅膜等過程，有升溫、恒溫和降溫3個過程至少要1-2個小時，本發明的配向層的製造方法大大優化了製程，節約整個製程的時間，同時也節約了成本。 The curing time of the UV-cured alignment film is greatly shortened. Compared with the existing PI alignment film, it should be a process of pre-baking PI and PI hardening, and the process of heating, constant temperature and cooling is at least 1-2 hours. The manufacturing method of the alignment layer of the invention greatly optimizes the process, saves the entire process time, and also saves costs.
在該紫外光束照射過程中，該配向層材料中的HEA在紫外光下能發生聚合，使該配向層材料在紫外光下發生交聯反應。如第4圖所示，HEA主要有二種交聯方式，第4a圖所示的串聯方式以及第4b圖所示的並聯方式。 During the ultraviolet beam irradiation, the HEA in the alignment layer material can be polymerized under ultraviolet light to cause the alignment layer material to crosslink under ultraviolet light. As shown in Fig. 4, HEA mainly has two types of cross-linking, the series mode shown in Fig. 4a and the parallel mode shown in Fig. 4b.
步驟S14，採用配向技術對固化後的配向層材料進行配向，形成配向層。 In step S14, the alignment layer material after curing is aligned by an alignment technique to form an alignment layer.
利用絨布滾輪1在該配向層材料形成的材料層的表面進行接觸式順向機械式摩擦，具體如第5圖所示。 The contact-type forward mechanical friction is performed on the surface of the material layer formed by the alignment layer material by the fleece roller 1, as shown in Fig. 5.
本發明還提供了一種雙折射液晶薄膜的製造方法，如第6、7圖所示，雙折射液晶薄膜的製造方法包括以下步驟： The invention also provides a method for manufacturing a birefringent liquid crystal film. As shown in FIGS. 6 and 7, the method for manufacturing the birefringent liquid crystal film comprises the following steps:
步驟S21，提供配向層2、3，該配向層2、3包括一種聚合物，該聚合物具有如下分子結構式：
該步驟中配向層2、3的製造方法同步驟S11至S14，此處不再贅述 。如第7圖所示，分別形成該雙折射液晶薄膜的兩相對的配向層。 The manufacturing method of the alignment layers 2 and 3 in this step is the same as steps S11 to S14, and details are not described herein. . As shown in Fig. 7, two opposite alignment layers of the birefringent liquid crystal film are formed, respectively.
步驟S22，在配向層間塗佈可固化液晶單體4，例如Merck Ltd的RM257。 In step S22, a curable liquid crystal monomer 4 such as RM257 of Merck Ltd is applied between the alignment layers.
在配向層上填充可聚合的液晶單體4，在液晶單體4需要配向的溫度下使液晶按照摩擦的溝槽進行配向。由於配向層材料中聚合物的特殊結構和分子鍵極性力對液晶單體4扭曲具有一定的作用力，因此，簡單的摩擦即可使液晶單體4按照摩擦的溝槽進行配向。其中摩擦該配向層形成的材料層的高分子表面的動作所供的能量使高分子主鏈因延伸而順向排列，形成多個微結構，達到使液晶單體4配向排列的作用。 The polymerizable liquid crystal monomer 4 is filled on the alignment layer, and the liquid crystal is aligned in a rubbing groove at a temperature at which the liquid crystal monomer 4 needs to be aligned. Since the special structure of the polymer in the alignment layer material and the molecular bond polarity force have a certain force on the distortion of the liquid crystal cell 4, the simple rubbing can cause the liquid crystal cell 4 to align according to the rubbing groove. The energy supplied by the action of rubbing the surface of the polymer layer of the material layer formed by the alignment layer causes the polymer main chain to be aligned in the forward direction to form a plurality of microstructures, thereby achieving the function of aligning the liquid crystal monomers 4.
步驟S23，採用紫外光照射可固化液晶單體4。 In step S23, the liquid crystal monomer 4 is cured by irradiation with ultraviolet light.
配向完畢後，利用紫外光再次固化液晶單體4，從而獲得雙折射液晶薄膜。該雙折射液晶薄膜在其摩擦方向的偏振光下能射出液晶No折射率(常光折射率)的光線，在其摩擦方向90°的偏振光下能射出液晶Ne折射率(非常光折射率)的光線來，且其配向時間、溫度和透過率都比使用聚醯亞胺配向製作的雙折射薄膜要快要好。 After the alignment is completed, the liquid crystal monomer 4 is cured again by ultraviolet light, thereby obtaining a birefringent liquid crystal film. The birefringent liquid crystal film emits light of a liquid crystal No refractive index (normal refractive index) under polarized light in a rubbing direction, and emits a liquid crystal Ne refractive index (very refractive index) under polarized light having a rubbing direction of 90°. The light comes in, and its alignment time, temperature and transmittance are faster than the birefringent film made by using polyimide.
其雙折射液晶薄膜常用於2D/3D可切換式立體顯示器的應用，如授權公開號為：CN 100360987C中所描述的雙折射透鏡。 Its birefringent liquid crystal film is commonly used in 2D/3D switchable stereoscopic displays, such as the birefringent lens described in the authorization publication: CN 100360987C.
本發明的另一實施例還提供了利用本發明配向層材料製作TN盒的方法，該方法包括以下步驟：摩擦塗佈配向層材料的玻璃→塗佈封框膠→噴灑間隔物(Spacer)→按照摩擦方向垂直或反平行方 向貼合取向玻璃→灌注Merck型號為E80液晶→封閉灌晶口。完成TN盒製作後按照下列方法檢測其旋光性。如第8圖所示，第8圖中5為激光束，6為第一偏振片，7為TN盒，8為第二偏振片。取任意4個位置，旋轉角度為90±5度，TN盒在平行偏振光下激光束的偏振態變化如表一中所示，記錄旋轉角度，求出4個點的平均值(如表二所示)。 Another embodiment of the present invention also provides a method of fabricating a TN cell using the alignment layer material of the present invention, the method comprising the steps of: rubbing a glass of an alignment layer material → coating a sealant → spraying a spacer (Spacer) → Vertical or anti-parallel according to the rubbing direction To the laminated glass, the Merck model is E80 liquid crystal → closed filling port. After the TN box was fabricated, its optical rotation was measured by the following method. As shown in Fig. 8, in Fig. 8, 5 is a laser beam, 6 is a first polarizing plate, 7 is a TN box, and 8 is a second polarizing plate. Take any 4 positions, the rotation angle is 90±5 degrees, and the polarization state of the laser beam of the TN box under parallel polarized light is as shown in Table 1. Record the rotation angle and find the average value of 4 points (Table 2) Shown).
相較於現有技術，本發明的配向層、雙折射液晶薄膜及其配向層材料成膜不受溫度的限制，適合於大量塗佈，且具有高透過性，其特殊的溝槽結構和分子鍵極性力能增加其對液晶的配向。同時該本發明的配向層、雙折射液晶薄膜的製造方法製程簡單，可以實現在低溫下對配向膜進行固化，有利於量產且成本的降低，且 方便於液晶薄膜技術實現大批量製作製程。 Compared with the prior art, the alignment layer, the birefringent liquid crystal film and the alignment layer material thereof of the present invention are formed into a film which is not limited by temperature, is suitable for mass coating, and has high permeability, and has special groove structure and molecular bond. Polarity increases its alignment to the liquid crystal. At the same time, the manufacturing method of the alignment layer and the birefringent liquid crystal film of the present invention is simple in process, and can realize curing of the alignment film at a low temperature, which is advantageous for mass production and cost reduction, and Convenient for liquid crystal film technology to achieve high-volume production process.
在上述實施例中，僅對本發明進行了示範性描述，但是本領域具有通常知識者在閱讀本專利申請後可以在不脫離本發明的精神和範圍的情况下對本發明進行各種修改。 In the above-described embodiments, the present invention has been exemplarily described, and various modifications of the present invention can be made without departing from the spirit and scope of the invention.
S11‧‧‧步驟S11 S11‧‧‧Step S11
S12‧‧‧步驟S12 S12‧‧‧Step S12
S13‧‧‧步驟S13 S13‧‧‧Step S13
S14‧‧‧步驟S14 S14‧‧‧Step S14
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