CN115542441A - Diffusion film and its preparation method and application - Google Patents
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Abstract
Translated fromChinese
Description
Translated fromChinese技术领域technical field
本申请属于光学薄膜技术领域，尤其涉及一种扩散膜及其制备方法与应用。The application belongs to the technical field of optical thin films, and in particular relates to a diffusion film and its preparation method and application.
背景技术Background technique
扩散膜是一种功能薄膜，它依靠分散于扩散膜内部或表面的不同折射率的微小粒子进行折射、或散射，使点光源成为面光源，或者使光线在整个面更均匀。同时扩散膜也是背光模组重要组成部分，如背光灯开启后，光线通过导光板传导、垂直穿过LCD显示器进入观察者视野，由于背光灯为点光源或线光源，为了让整个显示面板光线均匀，需要在背光模组中加入一层或两层扩散膜。Diffusion film is a kind of functional film, which relies on tiny particles of different refractive indices dispersed inside or on the surface of the diffusion film to refract or scatter, making point light sources become surface light sources, or making light more uniform across the entire surface. At the same time, the diffusion film is also an important part of the backlight module. For example, when the backlight is turned on, the light is transmitted through the light guide plate and vertically passes through the LCD display to enter the observer's field of vision. Since the backlight is a point light source or a line light source, in order to make the entire display panel light uniform , it is necessary to add one or two layers of diffusion film to the backlight module.
目前市场上大多数的扩散膜制作工艺为：树脂中添加溶剂，稀释剂，助剂，固化剂以及扩散粒子通过搅拌分散制得涂液，再将涂液分别涂布在PET的两面，经烘箱干燥后获得扩散膜，配方和工艺比较复杂，所需的涂布设备要求较高，成本较高。由于光扩散粒子容易团聚，粒子的有效分散比较困难，往往也得不到理想的光扩散效果。At present, most of the diffusion film production process on the market is: adding solvent, diluent, additive, curing agent and diffusion particles to the resin to prepare the coating liquid by stirring and dispersing, and then coating the coating liquid on both sides of the PET respectively, and passing through the oven. After drying to obtain a diffusion film, the formula and process are relatively complicated, and the required coating equipment is relatively demanding and costly. Since the light-diffusing particles are easy to agglomerate, it is difficult to effectively disperse the particles, and often the ideal light-diffusing effect cannot be obtained.
而且目前背光模组在使用过程中，扩散膜表面会被棱镜模的棱角刮伤或擦伤，最终导致背光部分亮暗不均，匀光效果差，影响显示效果，不利于广泛使用。Moreover, during the use of the current backlight module, the surface of the diffusion film will be scratched or scratched by the edges and corners of the prism module, which will eventually lead to uneven brightness and darkness of the backlight part, poor light uniformity, and affect the display effect, which is not conducive to widespread use.
发明内容Contents of the invention
本申请的目的在于提供一种扩散膜及其制备方法与应用，旨在解决现有技术中扩散膜的配方和制备工艺复杂，不利于达到理想的光扩散效果，影响使用的问题。The purpose of this application is to provide a diffusion film and its preparation method and application, aiming to solve the problems in the prior art that the formulation and preparation process of the diffusion film are complicated, which is not conducive to achieving the ideal light diffusion effect and affects the use.
为实现上述申请目的，本申请采用的技术方案如下：In order to realize the above-mentioned application purpose, the technical scheme adopted in this application is as follows:
第一方面，本申请提供一种扩散膜，扩散膜包括基材以及设置在基材任一表面的扩散薄膜，其中，扩散薄膜由以下质量百分含量的组分制备而成：扩散粒子0.5％～10％，溶剂90～99.5％。In a first aspect, the present application provides a diffusion film. The diffusion film includes a substrate and a diffusion film disposed on any surface of the substrate, wherein the diffusion film is prepared from the following components in mass percentage: 0.5% of diffusion particles ～10%, solvent 90～99.5%.
第二方面，本申请提供一种扩散膜的制备方法，包括如下步骤：In a second aspect, the present application provides a method for preparing a diffusion membrane, comprising the following steps:
按照扩散薄膜各组分的质量百分含量将扩散粒子和溶剂进行混合处理，得到扩散薄膜混合涂液；Mixing the diffusion particles and the solvent according to the mass percentage of each component of the diffusion film to obtain a mixed coating solution for the diffusion film;
提供基材，将扩散薄膜混合涂液涂覆于基材的任一表面，并静置流平；Provide the base material, apply the mixed coating solution of the diffusion film to any surface of the base material, and let it stand for leveling;
采用固化设备进行固化处理，得到扩散膜。A curing device is used for curing treatment to obtain a diffusion film.
第三方面，本申请提供扩散膜或由扩散膜的制备方法制备得到的扩散膜在显示模组中的应用。In a third aspect, the present application provides an application of a diffusion film or a diffusion film prepared by a method for preparing a diffusion film in a display module.
本申请第一方面提供的扩散膜，该扩散膜包括基材以及设置在基材任一表面的扩散薄膜，且所提供的扩散薄膜由扩散粒子和溶剂组成，该配方中不包括树脂体系，使得到的扩散膜中，扩散粒子能够融入基材内部或镶嵌在基材表面，在无树脂混合的情况下，基材和扩散粒子的折射率之差较小，能够有效减少反向散射，提高扩散膜的透过率，并且控制扩散粒子以及溶剂的添加比例，使扩散膜雾度在15％-99％之间调节，确保扩散膜清晰度也较高，不会对显示造成明显影响，使得到的扩散膜具有高雾度，高清晰度，高透光率的特性；且提供的配方简单，减少了其他组分的使用，成本低，有利于扩散粒子的分散，能够达到理想的光扩散效果，有利于广泛使用。The diffusion film provided in the first aspect of the present application, the diffusion film includes a substrate and a diffusion film disposed on any surface of the substrate, and the provided diffusion film is composed of diffusion particles and a solvent, and the formula does not include a resin system, so that In the diffusion film, the diffusion particles can be integrated into the substrate or embedded on the surface of the substrate. In the case of no resin mixing, the difference in refractive index between the substrate and the diffusion particles is small, which can effectively reduce backscattering and improve diffusion. The transmittance of the film, and the addition ratio of diffusion particles and solvents are controlled, so that the haze of the diffusion film can be adjusted between 15% and 99%, to ensure that the clarity of the diffusion film is also high, and it will not have a significant impact on the display. The diffusion film has the characteristics of high haze, high definition, and high light transmittance; and the formula provided is simple, reducing the use of other components, low cost, conducive to the dispersion of diffusion particles, and can achieve the ideal light diffusion effect , which is conducive to widespread use.
本申请第二方面提供的扩散膜的制备方法，该制备方法中，将扩散粒子和溶剂进行混合处理得到扩散薄膜混合涂液，将扩散薄膜混合涂液进行涂覆并固化处理，得到扩散膜，且由于扩散薄膜混合涂液减少了树脂的使用，成本低、扩散粒子易分散，搅拌气泡少，流动性好易涂布，减少了涂布弊病，成膜速度快；该制备方法简化了生产工序，有利于大规模制备使用。The preparation method of the diffusion film provided by the second aspect of the present application, in this preparation method, the diffusion particles and the solvent are mixed to obtain the diffusion film mixed coating liquid, and the diffusion film mixed coating liquid is coated and cured to obtain the diffusion film, And because the mixed coating solution of the diffusion film reduces the use of resin, the cost is low, the diffusion particles are easy to disperse, the stirring bubbles are few, the fluidity is good and easy to coat, the coating disadvantages are reduced, and the film forming speed is fast; the preparation method simplifies the production process , which is conducive to large-scale preparation and use.
本申请第三方面提供的扩散膜或由扩散膜的制备方法制备得到的扩散膜在显示模组中的应用，由于得到的扩散膜为具有高雾度，高透光率，高清晰度的TAC基材扩散膜，可直接复合在偏光片下片使用，具有高雾度、高遮蔽性、高清晰度等特点，可修正扩散角度，提升光均匀度，满足用户的需求；当背光模组中的扩散膜出现异常而出现亮暗不均时，此TAC基扩散膜可起到修正扩散角度，修正光线成均匀面光源的作用，会使有较好的遮蔽功能，提升光均匀度；并且没没有包括树脂，不会增加扩散膜的厚度，且不会影响扩散粒子的分散效果，使得到的背光模组性能优异。The application of the diffusion film provided by the third aspect of the application or the diffusion film prepared by the method of preparing the diffusion film in the display module, because the obtained diffusion film is TAC with high haze, high light transmittance and high definition Substrate diffusion film can be directly compounded on the bottom of the polarizer. It has the characteristics of high haze, high shielding, and high definition. It can correct the diffusion angle, improve light uniformity, and meet the needs of users; when used in the backlight module When there is an abnormality in the diffusion film and uneven brightness and darkness, the TAC-based diffusion film can correct the diffusion angle and correct the light into a uniform surface light source, which will have a better shielding function and improve light uniformity; and there is no No resin is included, the thickness of the diffusion film will not be increased, and the dispersion effect of the diffusion particles will not be affected, so that the obtained backlight module has excellent performance.
附图说明Description of drawings
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only for the present application For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.
图1是本申请实施例提供的扩散膜的示意图。FIG. 1 is a schematic diagram of a diffusion membrane provided in an embodiment of the present application.
具体实施方式detailed description
为了使本申请要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。In order to make the technical problems, technical solutions and beneficial effects to be solved in the present application clearer, the present application will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
本申请中，术语“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况。其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。In this application, the term "and/or" describes the association relationship of associated objects, indicating that there may be three relationships, for example, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone Condition. Among them, A and B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship.
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，“a,b,或c中的至少一项(个)”，或，“a,b,和c中的至少一项(个)”，均可以表示：a,b,c,a-b(即a和b),a-c,b-c,或a-b-c，其中a,b,c分别可以是单个，也可以是多个。In this application, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, "at least one item (unit) of a, b, or c", or "at least one item (unit) of a, b, and c" can mean: a, b, c, a-b( That is, a and b), a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，部分或全部步骤可以并行执行或先后执行，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。It should be understood that in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and some or all steps may be executed in parallel or sequentially, and the execution order of each process shall be based on its functions and The internal logic is determined and should not constitute any limitation to the implementation process of the embodiment of the present application.
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。Terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.
本申请实施例说明书中所提到的相关成分的重量不仅仅可以指代各组分的具体含量，也可以表示各组分间重量的比例关系，因此，只要是按照本申请实施例说明书相关组分的含量按比例放大或缩小均在本申请实施例说明书公开的范围之内。具体地，本申请实施例说明书中的质量可以是μg、mg、g、kg等化工领域公知的质量单位。The weight of the relevant components mentioned in the description of the embodiments of the present application can not only refer to the specific content of each component, but also represent the proportional relationship between the weights of the various components. The scaling up or down of the content of the fraction is within the scope disclosed in the description of the embodiments of the present application. Specifically, the mass in the description of the embodiments of the present application may be μg, mg, g, kg and other well-known mass units in the chemical industry.
术语“第一“、“第二”仅用于描述目的，用来将目的如物质彼此区分开，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。例如，在不脱离本申请实施例范围的情况下，第一XX也可以被称为第二XX，类似地，第二XX也可以被称为第一XX。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。The terms "first" and "second" are only used for descriptive purposes to distinguish objects such as substances from each other, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. For example, without departing from the scope of the embodiments of the present application, the first XX can also be called the second XX, and similarly, the second XX can also be called the first XX. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.
本申请实施例第一方面提供一种扩散膜，如图1所示，扩散膜包括基材2以及设置在基材2任一表面的扩散薄膜，其中，扩散薄膜由以下质量百分含量的组分制备而成：扩散粒子2为0.5％～10％，溶剂90～99.5％。The first aspect of the embodiment of the present application provides a diffusion film. As shown in FIG. 1, the diffusion film includes a substrate 2 and a diffusion film disposed on any surface of the substrate 2, wherein the diffusion film is composed of the following mass percentages: Prepared separately: the diffusion particle 2 is 0.5%-10%, and the solvent is 90-99.5%.
本申请第一方面提供的扩散膜，该扩散膜包括基材以及设置在基材任一表面的扩散薄膜，且所提供的扩散薄膜由扩散粒子和溶剂组成，该配方中不包括树脂体系，使得到的扩散膜中，扩散粒子能够融入基材内部或镶嵌在基材表面，在无树脂混合的情况下，基材和扩散粒子的折射率之差较小，能够有效减少反向散射，提高扩散膜的透过率，并且控制扩散粒子以及溶剂的添加比例，使扩散膜雾度在15％-99％之间调节，确保扩散膜清晰度也较高，不会对显示造成明显影响，使得到的扩散膜具有高雾度，高清晰度，高透光率的特性；且提供的配方简单，减少了其他组分的使用，成本低，有利于扩散粒子的分散，能够达到理想的光扩散效果，有利于广泛使用。The diffusion film provided in the first aspect of the present application, the diffusion film includes a substrate and a diffusion film disposed on any surface of the substrate, and the provided diffusion film is composed of diffusion particles and a solvent, and the formula does not include a resin system, so that In the diffusion film, the diffusion particles can be integrated into the substrate or embedded on the surface of the substrate. In the case of no resin mixing, the difference in refractive index between the substrate and the diffusion particles is small, which can effectively reduce backscattering and improve diffusion. The transmittance of the film, and the addition ratio of diffusion particles and solvents are controlled, so that the haze of the diffusion film can be adjusted between 15% and 99%, to ensure that the clarity of the diffusion film is also high, and it will not have a significant impact on the display. The diffusion film has the characteristics of high haze, high definition, and high light transmittance; and the formula provided is simple, reducing the use of other components, low cost, conducive to the dispersion of diffusion particles, and can achieve the ideal light diffusion effect , which is conducive to widespread use.
在一些实施例中，扩散薄膜由以下质量百分含量的组分制备而成：扩散粒子0.5％～10％，溶剂90～99.5％。控制扩散粒子以及溶剂的添加比例，使扩散膜雾度在15％-99％之间调节，确保扩散膜清晰度也较高，不会对显示造成明显影响。In some embodiments, the diffusion film is prepared from the following components in mass percentage: 0.5%-10% of the diffusion particles, and 90-99.5% of the solvent. Control the addition ratio of diffusion particles and solvents to adjust the haze of the diffusion film between 15% and 99% to ensure that the clarity of the diffusion film is also high without significantly affecting the display.
在一些实施例中，扩散薄膜包括质量百分含量为0.5％～10％的扩散粒子。在一些具体实施例中，扩散薄膜包括如下质量百分含量的扩散粒子：0.5％、1％、1.5％、2％、2.5％、3％、3.5％、4％、4.5％、5％、5.5％、6％、6.5％、7％、7.5％、8％、8.5％、9％、9.5％、10％。In some embodiments, the diffusion film includes 0.5%-10% by mass of the diffusion particles. In some specific embodiments, the diffusion film includes diffusion particles in the following mass percentages: 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5% %, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%.
在一些实施例中，扩散粒子包括PMMA粒子、PBMA粒子、Pst粒子、PU粒子、纳米硫酸钡、碳酸钙、二氧化硅、二氧化钛中的至少一种。基于不同扩散膜的性质，选择不同的扩散粒子进行使用。In some embodiments, the diffusion particles include at least one of PMMA particles, PBMA particles, Pst particles, PU particles, nano barium sulfate, calcium carbonate, silicon dioxide, and titanium dioxide. Based on the properties of different diffusion membranes, different diffusion particles are selected for use.
在一些实施例中，扩散粒子的粒径为1～10μm。通过控制扩散粒子的粒子，一方面确保粒子的流动性较强、易分散，能够有利于控制扩散膜的透过率；另一方面使扩散膜雾度在15％-99％之间调节，确保扩散膜清晰度也较高，不会对显示造成明显影响，使得到的扩散膜具有高雾度，高清晰度，高透光率的特性。In some embodiments, the particle size of the diffusing particles is 1-10 μm. By controlling the particles of the diffusion particles, on the one hand, ensure that the particles have strong fluidity and are easy to disperse, which can help control the transmittance of the diffusion film; on the other hand, the haze of the diffusion film can be adjusted between 15% and 99%, ensuring that The definition of the diffusion film is also high, and will not cause obvious influence on the display, so that the obtained diffusion film has the characteristics of high haze, high definition, and high light transmittance.
在一些具体实施例中，扩散粒子的粒径选自：1μm、1.5μm、2μm、2.5μm、3μm、3.5μm、4μm、4.5μm、5μm、5.5μm、6μm、6.5μm、7μm、7.5μm、8μm、8.5μm、9μm、9.5μm、10μm。In some specific embodiments, the particle size of the diffusion particles is selected from: 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm, 3.5 μm, 4 μm, 4.5 μm, 5 μm, 5.5 μm, 6 μm, 6.5 μm, 7 μm, 7.5 μm, 8μm, 8.5μm, 9μm, 9.5μm, 10μm.
在一些具体实施例中，扩散薄膜包括质量百分含量为90％～99.5％的溶剂。在一些具体实施例中，扩散薄膜包括如下质量百分含量的溶剂：90％、90.5％、91％、91.5％、92％、92.5％、93％、93.5％、94％、94.5％、95％、95.5％、96％、96.5％、97％、97.5％、98％、98.5％、99％、99.5％。In some specific embodiments, the diffusion film includes 90% to 99.5% by mass of the solvent. In some specific embodiments, the diffusion film includes the following solvents in mass percentage: 90%, 90.5%, 91%, 91.5%, 92%, 92.5%, 93%, 93.5%, 94%, 94.5%, 95% , 95.5%, 96%, 96.5%, 97%, 97.5%, 98%, 98.5%, 99%, 99.5%.
在一些实施例中，溶剂选自环己酮或环己酮和其他助溶剂的混合溶剂。In some embodiments, the solvent is selected from cyclohexanone or a mixed solvent of cyclohexanone and other co-solvents.
在一些实施例中，，助溶剂包括乙酸乙酯、乙酸丁酯、甲醇、异丙醇、丙二醇甲醚醋酸酯、丁酮、丙酮、甲基异丁基酮、丙二醇甲醚中的至少一种。In some embodiments, the cosolvent includes at least one of ethyl acetate, butyl acetate, methanol, isopropanol, propylene glycol methyl ether acetate, butanone, acetone, methyl isobutyl ketone, and propylene glycol methyl ether .
在一些实施例中，溶剂选自环己酮和其他助溶剂的混合溶剂时，环己酮和其他助溶剂的体积比为50％～100％：0％～50％。In some embodiments, when the solvent is selected from a mixed solvent of cyclohexanone and other co-solvents, the volume ratio of cyclohexanone and other co-solvents is 50%-100%:0%-50%.
进一步，扩散膜包括基材以及设置在基材任一表面的扩散薄膜。在一些实施例中，基材选自TAC基材。在一些具体实施例中，TAC基材型号选自但不限于柯尼卡KC2UAW、柯尼卡KC4UAW、柯尼卡KC6UAW、乐凯、富士TG40UL、富士TJ25UL、富士TD60UL、富士TD80UL、晓星PG401S、晓星PG402S、达辉P940RR、达辉P960RR中的至少一种。Further, the diffusion film includes a base material and a diffusion film arranged on any surface of the base material. In some embodiments, the substrate is selected from TAC substrates. In some specific embodiments, the TAC substrate model is selected from but not limited to Konica KC2UAW, Konica KC4UAW, Konica KC6UAW, Lucky, Fuji TG40UL, Fuji TJ25UL, Fuji TD60UL, Fuji TD80UL, Hyosung PG401S, At least one of Hyosung PG402S, Dahui P940RR, Dahui P960RR.
本申请实施例第二方面提供一种扩散膜的制备方法，包括如下步骤：The second aspect of the embodiment of the present application provides a method for preparing a diffusion membrane, including the following steps:
S01.按照扩散薄膜各组分的质量百分含量将扩散粒子和溶剂进行混合处理，得到扩散薄膜混合涂液；S01. Mixing the diffusion particles and the solvent according to the mass percentage of each component of the diffusion film to obtain a mixed coating solution for the diffusion film;
S02.提供基材，将扩散薄膜混合涂液涂覆于基材的任一表面，并静置流平；S02. Provide the substrate, apply the mixed coating solution of the diffusion film to any surface of the substrate, and let it stand for leveling;
S03.采用固化设备进行固化处理，得到扩散膜。S03. Use curing equipment to perform curing treatment to obtain a diffusion film.
本申请实施例第二方面提供的扩散膜的制备方法，该制备方法中，将扩散粒子和溶剂进行混合处理得到扩散薄膜混合涂液，将扩散薄膜混合涂液进行涂覆并固化处理，得到扩散膜，且由于扩散薄膜混合涂液减少了树脂的使用，成本低、扩散粒子易分散，搅拌气泡少，流动性好易涂布，减少了涂布弊病，成膜速度快；该制备方法简化了生产工序，有利于大规模制备使用。In the preparation method of the diffusion film provided in the second aspect of the embodiment of the present application, in the preparation method, the diffusion particles and the solvent are mixed to obtain a diffusion film mixed coating liquid, and the diffusion film mixed coating liquid is coated and cured to obtain a diffusion film film, and because the mixed coating solution of the diffusion film reduces the use of resin, the cost is low, the diffusion particles are easy to disperse, the stirring bubbles are few, the fluidity is good and easy to coat, the coating disadvantages are reduced, and the film forming speed is fast; the preparation method simplifies The production process is conducive to large-scale preparation and use.
步骤S01中，按照扩散薄膜各组分的质量百分含量将扩散粒子和溶剂进行混合处理，得到扩散薄膜混合涂液。In step S01, the diffusion particles and the solvent are mixed according to the mass percentage of each component of the diffusion film to obtain a mixed coating solution for the diffusion film.
在一些实施例中，混合处理包括采用磁力搅拌、机械搅拌、离心搅拌、超声搅拌中的任意一种方式进行混合处理，且混合处理的时间为5～60分钟。In some embodiments, the mixing process includes any one of magnetic stirring, mechanical stirring, centrifugal stirring, and ultrasonic stirring, and the mixing time is 5-60 minutes.
步骤S02中，提供基材，将扩散薄膜混合涂液涂覆于基材的任一表面，并静置流平。In step S02 , a substrate is provided, and the diffusion film mixed coating solution is applied to any surface of the substrate, and left to level.
在一些实施例中，涂覆包括白用线棒涂布、刮刀涂布、旋涂、辊涂、浸涂中的任意一种方式进行涂覆。In some embodiments, the coating includes coating by any one of wire bar coating, knife coating, spin coating, roll coating, and dip coating.
步骤S03中，采用固化设备进行固化处理，得到扩散膜。In step S03, a curing device is used to perform curing treatment to obtain a diffusion film.
在一些实施例中，固化设备选自烘箱，采用烘箱进行干燥处理。在一些实施例中，固化处理的温度为45～100℃，时间为1～10分钟。In some embodiments, the curing device is selected from an oven, and an oven is used for drying treatment. In some embodiments, the temperature of the curing treatment is 45-100° C., and the curing time is 1-10 minutes.
在一些具体实施例中，固化处理的温度选自45℃、50℃、55℃、60℃、65℃、70℃、75℃、80℃、85℃、90℃、95℃、100℃；固化处理的时间选自1分钟、1.5分钟、2分钟、2.5分钟、3分钟、3.5分钟、4分钟、4.5分钟、5分钟、5.5分钟、6分钟、6.5分钟、7分钟、7.5分钟、8分钟、8.5分钟、9分钟、9.5分钟、10分钟。In some specific embodiments, the curing temperature is selected from 45°C, 50°C, 55°C, 60°C, 65°C, 70°C, 75°C, 80°C, 85°C, 90°C, 95°C, 100°C; The time of treatment is selected from 1 minute, 1.5 minutes, 2 minutes, 2.5 minutes, 3 minutes, 3.5 minutes, 4 minutes, 4.5 minutes, 5 minutes, 5.5 minutes, 6 minutes, 6.5 minutes, 7 minutes, 7.5 minutes, 8 minutes, 8.5 minutes, 9 minutes, 9.5 minutes, 10 minutes.
本申请实施例第三方面公开了扩散膜或由扩散膜的制备方法制备得到的扩散膜在显示模组中的应用。The third aspect of the embodiments of the present application discloses the application of a diffusion film or a diffusion film prepared by a method for preparing a diffusion film in a display module.
本申请实施例第三方面提供的扩散膜或由扩散膜的制备方法制备得到的扩散膜在显示模组中的应用，由于得到的扩散膜为具有高雾度，高透光率，高清晰度的TAC基材扩散膜，可直接复合在偏光片下片使用，具有高雾度、高遮蔽性、高清晰度等特点，可修正扩散角度，提升光均匀度，满足用户的需求；当背光模组中的扩散膜出现异常而出现亮暗不均时，此TAC基扩散膜可起到修正扩散角度，修正光线成均匀面光源的作用，会使有较好的遮蔽功能，提升光均匀度；并且没没有包括树脂，不会增加扩散膜的厚度，且不会影响扩散粒子的分散效果，使得到的背光模组性能优异。The application of the diffusion film provided by the third aspect of the embodiment of the present application or the diffusion film prepared by the method of preparing the diffusion film in the display module, because the obtained diffusion film has high haze, high light transmittance, and high definition The advanced TAC substrate diffusion film can be directly compounded on the bottom of the polarizer. It has the characteristics of high haze, high shielding, and high definition. It can correct the diffusion angle and improve the light uniformity to meet the needs of users; when the backlight module When the diffusion film in the group is abnormal and uneven in brightness and darkness, this TAC-based diffusion film can correct the diffusion angle and correct the light into a uniform surface light source, which will have a better shielding function and improve light uniformity; Moreover, no resin is included, the thickness of the diffusion film will not be increased, and the dispersion effect of the diffusion particles will not be affected, so that the obtained backlight module has excellent performance.
下面结合具体实施例进行说明。The following will be described in conjunction with specific embodiments.
实施例1Example 1
扩散膜及其制备方法Diffusion film and its preparation method
扩散膜Diffusion membrane
扩散膜包括基材以及设置在基材任一表面的扩散薄膜，其中，扩散薄膜由以下质量百分含量的组分制备而成：扩散粒子1％，溶剂99％，扩散粒子为Pst粒子，平均粒径2um，溶剂为环己酮：丙二醇甲醚：乙酸乙酯的体积比为1:1:2混合溶剂。The diffusion film includes a substrate and a diffusion film arranged on any surface of the substrate, wherein the diffusion film is prepared from the following components in mass percentage: 1% of the diffusion particles, 99% of the solvent, the diffusion particles are Pst particles, and the average The particle size is 2um, and the solvent is a mixed solvent of cyclohexanone: propylene glycol methyl ether: ethyl acetate with a volume ratio of 1:1:2.
制备方法如下：The preparation method is as follows:
(1)在混合溶剂中添加1％的Pst扩散粒子，采用磁力搅拌方式，搅拌速度1500r/min，搅拌30min，；(1) Add 1% Pst diffusion particles in the mixed solvent, adopt magnetic stirring method, stirring speed 1500r/min, stir 30min;
(2)用线棒刮涂方式将涂液涂布在TAC表面，线棒选择OSP-60；(2) Apply the coating solution on the surface of TAC by scraping with a wire rod, and select OSP-60 for the wire rod;
(3)流平1min后，将其放置在80℃烘箱中进行干燥5min后取出，制得TAC基扩散膜。(3) After leveling for 1 min, place it in an oven at 80° C. for 5 min and take it out to prepare a TAC-based diffusion film.
实施例2Example 2
扩散膜及其制备方法Diffusion film and its preparation method
扩散膜Diffusion membrane
扩散膜包括基材以及设置在基材任一表面的扩散薄膜，其中，扩散薄膜由以下质量百分含量的组分制备而成：扩散粒子2％，溶剂98％，扩散粒子为Pst粒子，平均粒径3.5um，溶剂为环己酮：乙酸丁酯：甲醇的体积比为1:1:2混合溶剂。The diffusion film includes a substrate and a diffusion film arranged on any surface of the substrate, wherein the diffusion film is prepared from the following components in mass percentage: 2% of the diffusion particles, 98% of the solvent, the diffusion particles are Pst particles, and the average The particle size is 3.5um, and the solvent is a mixed solvent of cyclohexanone: butyl acetate: methanol with a volume ratio of 1:1:2.
制备方法如下：The preparation method is as follows:
(1)在混合溶剂中添加2％的Pst扩散粒子，采用磁力搅拌方式，搅拌速度1500r/min，搅拌30min，；(1) Add 2% Pst diffusion particles in the mixed solvent, adopt magnetic stirring method, stirring speed 1500r/min, stir 30min;
(2)用线棒刮涂方式将涂液涂布在TAC表面，线棒选择OSP-60；(2) Apply the coating solution on the surface of TAC by scraping with a wire rod, and select OSP-60 for the wire rod;
(3)流平1min后，将其放置在80℃烘箱中进行干燥5min后取出，制得TAC基扩散膜。(3) After leveling for 1 min, place it in an oven at 80° C. for 5 min and take it out to prepare a TAC-based diffusion film.
实施例3Example 3
扩散膜及其制备方法Diffusion film and its preparation method
扩散膜Diffusion membrane
扩散膜包括基材以及设置在基材任一表面的扩散薄膜，其中，扩散薄膜由以下质量百分含量的组分制备而成：扩散粒子3％，溶剂97％，扩散粒子为Pst粒子，平均粒径5um，溶剂为环己酮：甲基异丁基酮的体积比为1:1混合溶剂。The diffusion film includes a substrate and a diffusion film arranged on any surface of the substrate, wherein the diffusion film is prepared from the following components in mass percentage: 3% of the diffusion particles, 97% of the solvent, the diffusion particles are Pst particles, and the average The particle size is 5um, and the solvent is a mixed solvent of cyclohexanone: methyl isobutyl ketone with a volume ratio of 1:1.
制备方法如下：The preparation method is as follows:
(1)在混合溶剂中添加3％的Pst扩散粒子，采用磁力搅拌方式，搅拌速度1500r/min，搅拌30min，；(1) Add 3% Pst diffusion particles in the mixed solvent, adopt magnetic stirring method, stirring speed 1500r/min, stir for 30min;
(2)用线棒刮涂方式将涂液涂布在TAC表面，线棒选择OSP-60；(2) Apply the coating solution on the surface of TAC by scraping with a wire rod, and select OSP-60 for the wire rod;
(3)流平1min后，将其放置在80℃烘箱中进行干燥5min后取出，制得TAC基扩散膜。(3) After leveling for 1 min, place it in an oven at 80° C. for 5 min and take it out to prepare a TAC-based diffusion film.
对比例1Comparative example 1
扩散膜及其制备方法Diffusion film and its preparation method
扩散膜Diffusion membrane
扩散膜包括基材以及设置在基材任一表面的扩散薄膜，其中，扩散薄膜由以下质量百分含量的组分制备而成：扩散粒子2％，溶剂98％，扩散粒子为Pst粒子，平均粒径5um，溶剂为树脂中添加溶剂，稀释剂，助剂，固化剂。The diffusion film includes a substrate and a diffusion film arranged on any surface of the substrate, wherein the diffusion film is prepared from the following components in mass percentage: 2% of the diffusion particles, 98% of the solvent, the diffusion particles are Pst particles, and the average The particle size is 5um, and the solvent is to add solvent, diluent, auxiliary agent and curing agent to the resin.
制备方法如下：The preparation method is as follows:
(1)在混合溶剂中添加2％的Pst扩散粒子，采用磁力搅拌方式，搅拌速度1500r/min，搅拌30min；(1) Add 2% Pst diffusion particles in the mixed solvent, adopt magnetic stirring method, stirring speed 1500r/min, stir for 30min;
(2)用刮刀涂布方式将溶液涂布在PET表面，刮刀选用300μm的刮刀，胶厚为20μm；(2) Coat the solution on the surface of PET with a scraper coating method, the scraper is a 300 μm scraper, and the glue thickness is 20 μm;
(3)将其放置在100℃烘箱中进行干燥5min后取出，制得PET基膜扩散膜。(3) Place it in an oven at 100° C. to dry for 5 minutes and then take it out to prepare a PET base film diffusion film.
对比例2Comparative example 2
扩散膜及其制备方法Diffusion film and its preparation method
扩散膜Diffusion membrane
扩散膜包括基材以及设置在基材任一表面的扩散薄膜，其中，扩散薄膜由以下质量百分含量的组分制备而成：扩散粒子6％，溶剂94％，扩散粒子为Pst粒子，平均粒径5um，溶剂为树脂中添加溶剂，稀释剂，助剂，固化剂。The diffusion film includes a substrate and a diffusion film arranged on any surface of the substrate, wherein the diffusion film is prepared from the following components in mass percentage: 6% of the diffusion particles, 94% of the solvent, the diffusion particles are Pst particles, and the average The particle size is 5um, and the solvent is to add solvent, diluent, auxiliary agent and curing agent to the resin.
制备方法如下：The preparation method is as follows:
(1)在混合溶剂中添加6％的Pst扩散粒子，采用磁力搅拌方式，搅拌速度1500r/min，搅拌30min；(1) Add 6% Pst diffusion particles in the mixed solvent, adopt magnetic stirring method, stirring speed 1500r/min, stir for 30min;
(2)用刮刀涂布方式将溶液涂布在PET表面，刮刀选用400μm的刮刀，胶厚为25μm；(2) Coat the solution on the surface of PET by scraper coating, the scraper is 400 μm, and the glue thickness is 25 μm;
(3)将其放置在100℃烘箱中进行干燥5min后取出，制得PET基膜扩散膜。(3) Place it in an oven at 100° C. to dry for 5 minutes and then take it out to prepare a PET base film diffusion film.
性能检测试验performance test
对实施例1～3、对比例1～2得到的产品进行性能检测试验，包括：The product that
(1)透过率(1) Transmittance
测试方法如下：使用V-7100紫外分光光度计进行测试，打开软件，将仪器校准，将裁切机将待测试样本裁成大小约4cmX50cm，长边方向需与底边成0°，将样本涂布面朝向积分球放置于透视窗，长边平行于底面放置，关好测试门，点击开始测试后可出透过率数值。The test method is as follows: use the V-7100 UV spectrophotometer to test, open the software, calibrate the instrument, cut the sample to be tested into a size of about 4cmX50cm by the cutting machine, and the long side direction must be 0° to the bottom side, and the sample is painted Place the cloth surface facing the integrating sphere on the perspective window, and place the long side parallel to the bottom surface. Close the test door and click to start the test to get the transmittance value.
(2)雾度(2) Haze
测试方法如下：使用NDH-5000雾度测试仪进行测试，打开NDH-5000软件，点击校准，将样品涂布面朝向通光孔，且需保证样品覆盖住通光孔，使用夹子夹稳，关上舱门，点击开始测试，即可得出雾度值。The test method is as follows: Use the NDH-5000 haze tester to test, open the NDH-5000 software, click Calibrate, and the coated surface of the sample faces the light hole, and it is necessary to ensure that the sample covers the light hole, use a clip to hold it firmly, and close the The hatch, click to start the test, and the haze value can be obtained.
(3)清晰度(3) Clarity
测试方法如下：使用清晰度计进行测试，打开软件，将光学模式设置为投射，将仪器进行校准后，打开上盖，打开样品台夹子，取膜材放置其中并保证完全覆盖遮光孔，固定好后关上盖子，点击测试即可得出清晰度数值。The test method is as follows: Use the clarity meter to test, open the software, set the optical mode to projection, calibrate the instrument, open the upper cover, open the sample stage clip, take the film material and place it in it to ensure that the shading hole is completely covered, and fix it Finally close the cover, click test to get the clarity value.
(4)百格测试(4) 100 grid test
测试方法如下：将待测试样本涂布面朝上放置在硬度足够的平板上，手握百格刀刀柄，使多刃切割刀垂直于膜平面，已均匀的压力，平稳的不颤抖的手法和以20-50mm/S切割速度割划，将膜旋转90°，在所割切口上重复以上动作，形成格阵图形，用刷子延格阵图形对角线轻轻的向后5次，向前5次刷样本。达到切口边缘完全光滑，格子边缘没有任何剥落的效果。The test method is as follows: place the sample to be tested on a flat plate with sufficient hardness facing upwards, hold the handle of a multi-blade knife, and make the multi-edged cutting knife perpendicular to the film plane, with uniform pressure and a steady and non-shaking method And cut at a cutting speed of 20-50mm/S, rotate the film 90°, repeat the above actions on the cut incision to form a grid pattern, and gently move backward 5 times along the diagonal line of the grid pattern with a brush, to The first 5 brush samples. The edge of the cut is completely smooth, and the edge of the lattice does not have any peeling effect.
结果分析Result analysis
对实施例1～3、对比例1～2得到的产品进行性能检测试验，结果如表1所示，从表1可以看出，本申请实施例采用特殊的扩散膜配方及特定的生产工艺进行制备的TAC基扩散膜，可以形成具有优异可成型性的光扩散层，可直接复合在偏光片下片使用，具有高雾度、高遮蔽性、高清晰度等特点，可修正扩散角度，提升光均匀度，满足用户的需求。且雾度越高，本申请实施例方案所用的扩散粒子比例相对传统树脂方案越减少，且不增加基膜厚度，传统方案为达到高雾度效果，通常在增加扩散粒子的含量时必须增加树脂量，否则粒子分散效果很差，造成内污问题。The products obtained in Examples 1 to 3 and Comparative Examples 1 to 2 were tested for performance testing, and the results are shown in Table 1. As can be seen from Table 1, the embodiments of the present application adopt special diffusion membrane formulations and specific production processes to carry out the test. The prepared TAC-based diffusion film can form a light diffusion layer with excellent formability, which can be directly compounded on the bottom of the polarizer. It has the characteristics of high haze, high shielding, and high definition. It can correct the diffusion angle and improve Light uniformity, to meet the needs of users. And the higher the haze, the less the proportion of diffusing particles used in the embodiment scheme of this application compared with the traditional resin scheme, without increasing the thickness of the base film. In order to achieve a high haze effect in the traditional scheme, it is usually necessary to increase the resin when increasing the content of diffusing particles. Otherwise, the particle dispersion effect will be poor, causing internal pollution problems.
表1Table 1
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本申请的保护范围之内。The above descriptions are only preferred embodiments of the application, and are not intended to limit the application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the application should be included in the protection of the application. within range.
Claims (10)
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| CN117970544A (en)* | 2024-04-01 | 2024-05-03 | 绵阳虹瑞科技有限公司 | Single-layer quantum dot optical diffusion plate and preparation method thereof |
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