WO2019090959A1 - 抗光屏幕及其制造方法 - Google Patents

抗光屏幕及其制造方法 Download PDF

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Publication number
WO2019090959A1
WO2019090959A1 PCT/CN2018/071439 CN2018071439W WO2019090959A1 WO 2019090959 A1 WO2019090959 A1 WO 2019090959A1 CN 2018071439 W CN2018071439 W CN 2018071439W WO 2019090959 A1 WO2019090959 A1 WO 2019090959A1
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Prior art keywords
light
substrate
flexible substrate
reflective layer
layer
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PCT/CN2018/071439
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English (en)
French (fr)
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张红秀
胡飞
李屹
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深圳光峰科技股份有限公司
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Publication of WO2019090959A1 publication Critical patent/WO2019090959A1/zh

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface

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  • the present invention relates to a screen for projection and a method of manufacturing the same, and more particularly to a light resistant screen and a method of fabricating the same.
  • the anti-light projection screen is a new generation optical screen designed for use in high-brightness environments. It divides the screen horizontally into a horizontal prism, blackened on the side of the prism facing the ambient light, facing A side of the projection light is coated with a reflective layer to suppress interference from ambient light, also referred to as a black grid screen.
  • U.S. Patent No. 6,744,558, 882 discloses a rear-projection light-resistant curtain which forms a prism structure on a transparent substrate while arranging a light-shielding coating on one side of the micro-protrusion of the prism structure to absorb ambient light; and another US patent US 7262911 B2 provides a reflective screen comprising a substrate having a sawtooth appearance, the substrate being composed of a white resin that reflects light.
  • the conventional method for manufacturing a light-resistant screen is generally a method of conventionally manufacturing a film by spraying, vapor deposition, or the like, which cannot accurately form a reflective layer or a light absorbing layer only in a micro-sized micro-protrusion, and is sprayed from a nozzle in a spraying method.
  • the coating particles are heavily divergent and cannot be oriented to cover one side of the micro-raised strip. Therefore, how to accurately manufacture a light-resistant screen composed of micro-sized micro-protrusions has become an urgent problem to be solved by those skilled in the art.
  • the technical problem to be solved by the present invention is to provide a light-resistant screen and a manufacturing method thereof by printing a parallel spaced reflective layer and/or a light absorbing layer on a flexible substrate, or in a transparent substrate, in view of the deficiencies of the prior art.
  • the light-absorbing layer disposed in parallel is printed on the material, and then the flexible substrate or the light-transmitting substrate is heat-pressed by means of a mold having a prism structure to form a reflective anti-light screen or a transmissive anti-light screen, thereby avoiding the conventional coating method.
  • the shortcoming of ensuring the strict linear motion of the coating particles enables accurate manufacturing of the light-resistant screen.
  • the invention provides a method for manufacturing a light-resistant screen, the manufacturing method comprising: S1: printing a reflective layer and/or a light-absorbing layer arranged in parallel on a flexible substrate; S2: a mold having a prism structure and a flexible base After the material is aligned, it is hot pressed to form a light-resistant screen having a prism structure.
  • the flexible substrate is made of at least one of polycarbonate, polyvinyl chloride or polyethylene terephthalate.
  • the flexible substrate is one of a light absorbing substrate, a reflective substrate or a light transmissive substrate.
  • the reflective layer is an ink or coating containing diffusely reflective particles or specularly reflective particles.
  • the light absorbing layer is an ink or coating containing carbon black, triiron tetroxide or copper chrome black.
  • the mold is a soft film having a prism structure or a roller engraved with a prism structure.
  • the printing is inkjet printing or screen printing.
  • the aligning comprises: arranging a substrate alignment strip on the flexible substrate, corresponding to the substrate alignment strip on the mold having the prism structure The mold is aligned with the strip, and the substrate alignment strip is aligned with the mold alignment strip during hot pressing.
  • the present invention also provides a light-resistant screen comprising a flexible substrate having a prism structure, the surface of the prism structure being spaced apart from the reflective layer and/or the light absorbing layer, and the light-resistant screen further provided with a substrate alignment strip.
  • the flexible substrate has a thickness of 0.1 mm to 0.5 mm
  • each of the reflective layer and the light absorbing layer has a width of 25 ⁇ m to 200 ⁇ m
  • the reflective layer and the light absorbing layer have a thickness of 0.1 ⁇ m to 2 ⁇ m.
  • the number of the substrate alignment strips is at least two, the width of the reflective layer > the width of the substrate alignment strips > 1/10 of the width of the reflective layer, and the distance between the two substrate alignment strips is 10 mm - 100 mm.
  • the flexible substrate has a thickness of 0.125 mm to 0.3 mm
  • the reflective layer and the light absorbing layer have a width of 50 ⁇ m to 100 ⁇ m
  • the reflective layer and the light absorbing layer have a thickness of 0.5 ⁇ m to 1 ⁇ m.
  • the present invention prints parallelly spaced reflective layers and light absorbing layers on a flexible substrate, or prints parallel spaced light absorbing layers on a light transmissive substrate, followed by hot pressing of the flexible substrate by means of a mold having a prismatic structure.
  • the material or the light-transmitting substrate is formed into a reflective anti-light screen or a transmissive anti-light screen, which avoids the shortcoming that the conventional coating method cannot ensure the strict linear motion of the coating particles, and can realize the precise manufacture of the anti-light screen.
  • FIG. 1 is a schematic flow chart 1 of a method for manufacturing a light-resistant screen according to the present invention
  • FIG. 2 is a schematic flow chart 2 of a method for manufacturing a light-resistant screen according to the present invention.
  • FIG. 1 is a schematic flow chart of a method for manufacturing a light-resistant screen according to the present invention. As shown in FIG. 1 , the present invention provides a method for manufacturing a light-resistant screen, the manufacturing method including:
  • the flexible substrate 10 may be at least one of PC (polycarbonate), PVC (polyvinyl chloride) or PET (polyethylene terephthalate); the reflective layer may be filled with
  • the reflective particles such as barium sulfate, alumina, or the like may be an ink or a coating containing specularly reflective particles such as silver or aluminum particles; the light absorbing layer may be a light absorbing material such as carbon black, triiron tetroxide or copper chrome black.
  • the composition of the ink or paint may be at least one of PC (polycarbonate), PVC (polyvinyl chloride) or PET (polyethylene terephthalate); the reflective layer may be filled with
  • the reflective particles such as barium sulfate, alumina, or the like may be an ink or a coating containing specularly reflective particles such as silver or aluminum particles; the light absorbing layer may be a light absorbing material such as carbon black, triiron tetroxide or copper chrome black.
  • the flexible substrate 10 has a thickness of from 0.1 mm to 0.5 mm, preferably from 0.125 mm to 0.3 mm.
  • the parallel printing can be performed on the flexible substrate 10.
  • the reflective layer 11 or the light absorbing layer 12 is arranged at intervals, and after the semi-cured layer 11 or the light absorbing layer 12 is semi-cured, the light absorbing layer 12 or the reflective layer 11 is printed in the gap between the reflective layer 11 or the light absorbing layer 12, thereby forming parallel reflections.
  • the printing includes, but is not limited to, inkjet printing, screen printing, and the like.
  • the reflective layer or the light absorbing layer may be integrally printed on the flexible substrate 10, and after the semi-cured layer or the light absorbing layer is semi-cured, the light-absorbing layer or the reflective layer arranged in parallel may be printed on the reflective layer or the light-absorbing layer. Thereby, a reflective layer and a light absorbing layer which are arranged in parallel are formed.
  • a flexible substrate having a reflective function that is, a reflective substrate such as a highly reflective polyester film containing reflective particles such as alumina, titania or barium sulfate may be directly used, and parallel-arranged light absorption is printed on the reflective substrate.
  • a flexible substrate having a light absorbing function that is, a light absorbing substrate, may be directly used, and a parallel spaced reflective layer is printed on the light absorbing substrate to form a parallel
  • a reflective layer and a light absorbing layer are provided at intervals.
  • the substrate alignment strip 31 may be disposed on the flexible substrate, and disposed on the mold 20 having the prism structure.
  • the mold alignment strip 32, the substrate alignment strip 31 is disposed corresponding to the mold alignment strip 32, and the number of the preferred substrate alignment strip 31 and the mold alignment strip 32 is two. It should be noted that the present invention does not limit the number of the substrate alignment strips 31 and the mold alignment strips 32.
  • the number of the substrate alignment strips 31 and the mold alignment strips 32 may have at least two in the same light-resistant screen. Or only one.
  • a continuous flexible composite substrate when used for continuous hot press forming to prepare a light-resistant screen, there may be a plurality of substrate alignment strips 31 on the same light-resistant screen; similarly, corresponding to the mold alignment strip 32 There may be more than one in the same mold.
  • the printing may be performed at a distance without spacing, that is, a blank strip is left as the substrate alignment strip 31. It is also possible to print a portion of the substrate alignment strip 31 on the surface thereof after printing the reflective layer 11 and the light absorbing layer 12 which are arranged in parallel.
  • the width of the reflective layer > the width of the substrate alignment strip > 1/10 of the width of the reflective layer, or the width of the light absorption layer 12 > the width of the substrate alignment strip 31 > 1 / of the width of the light absorption layer 12 10.
  • the distance between the two substrate alignment strips 31 can be set according to actual conditions, preferably 10 mm to 100 mm.
  • each of the reflective layer and the light absorbing layer has a width of from 25 ⁇ m to 200 ⁇ m, preferably from 50 ⁇ m to 100 ⁇ m.
  • the width of each of the reflective layer and the light absorbing layer may be equal or gradually variable.
  • the thickness of the reflective layer and the light absorbing layer is from 0.1 ⁇ m to 2 ⁇ m, preferably from 0.5 ⁇ m to 1 ⁇ m.
  • those skilled in the art can also change the above width and thickness according to actual needs, and the present invention is not limited thereto.
  • the mold 20 having a prism structure may be a soft film having a prism structure, or may be a roller having a prism structure or the like.
  • the hot pressing process in the present invention can be carried out by a conventional hot pressing process, either continuous hot pressing or single piece hot pressing.
  • the step of the hot pressing process comprises: heating the raw material and/or the mold to a certain temperature; and then, pressing the raw material through the mold to form the raw material at a certain temperature.
  • the flexible substrate and the roll as a mold can be simultaneously heated to a predetermined temperature, and then the flexible substrate is subjected to hot press forming; the flexible substrate can also be separately heated to a certain temperature, and then the soft mold can be used.
  • the invention does not limit the depth H, the width L and the angle ⁇ of the prism structure, and those skilled in the art can select different molds according to actual needs, thereby obtaining a light-resistant screen with different structures, as long as the selected mold and the flexible substrate are printed.
  • the reflective layer and the light absorbing layer are matched, and the present invention does not limit the parameters such as temperature and pressure of the hot pressing. Those skilled in the art can adjust the relevant parameters according to the types of the flexible substrate, the reflective layer and the light absorbing layer.
  • the depth H of the prism structure is small compared to the overall thickness of the flexible substrate, the final thickness of the light-resistant screen produced in the present invention is substantially the same as the thickness of the flexible substrate material.
  • the present invention also provides another method of manufacturing a light resistant screen, the manufacturing method comprising:
  • the manufacturing method is substantially the same as the above-described manufacturing method, and the flexible substrate is selected as a light-transmitting substrate, and the reflective layer and the light-absorbing layer disposed in parallel are formed as light-absorbing layers disposed in parallel at intervals, thereby producing a transmissive light-resistant screen.
  • the light-resistant screen manufactured in the manufacturing method is a transmissive anti-light screen.
  • the flexible substrate 10 is made of polyethylene terephthalate having a thickness of 0.2 mm
  • the printing method is inkjet printing
  • the reflective layer is an ink containing alumina
  • the light absorbing layer is containing carbon black. Ink.
  • each reflective layer 11 has a width of 100 ⁇ m, a thickness of 0.2 ⁇ m, and a plurality of reflective layers 11 are spaced apart by 100 ⁇ m; after the layer 11 to be reflective is semi-cured Further, the light absorbing layer 12 was printed in the gap of the reflective layer 11, thereby forming a plurality of spaced-apart light absorbing layers 12 having a width of 100 ⁇ m and having a thickness of 0.2 ⁇ m.
  • the mold 20 having the prism structure is then aligned with the flexible substrate 10 and then hot pressed to form a light-resistant screen having a prismatic structure.
  • the flexible substrate is made of polyethylene terephthalate having a thickness of 0.3 mm
  • the printing method is screen printing
  • the reflective layer is a coating containing aluminum particles
  • the light absorbing layer contains triiron tetroxide. Paint.
  • the position of the substrate alignment strip 31 is reserved on the flexible substrate 10.
  • Two blank strips having a width of 20 ⁇ m are disposed at intervals of 50 mm, and two molds are provided on the mold having the prism structure corresponding to the substrate alignment strip 31.
  • the alignment strip 32 is then printed with parallel spaced reflective layers at the remaining positions of the flexible substrate 10, each reflective layer having a width of 80 ⁇ m and a thickness of 0.5 ⁇ m, and the layer to be reflective is semi-cured and then in the gap of the reflective layer.
  • the light absorbing layer is printed to form a plurality of spaced light absorbing layers 12.
  • the mold alignment strip 32 on the mold having the prism structure is aligned with the substrate alignment strip 31 on the flexible substrate, and then hot pressed to form a light-resistant screen having a prism structure.
  • the light-resistant screen surface retains two substrate alignment strips 31.
  • the difference between the embodiment is that the flexible substrate is selected as a light-transmitting substrate, and the reflective layer and the light-absorbing layer disposed in parallel are changed into parallel-spaced light-absorbing layers, thereby manufacturing transmissive light resistance. screen.
  • Other methods are the same as those in the first embodiment, and are not described herein again.
  • the flexible substrate may also be selected as a light absorbing substrate or a reflective substrate; and correspondingly, the reflective layer and the light absorbing layer disposed in parallel intervals become parallel reflection layers or light absorbing layers. Thereby a reflective anti-glare screen is produced. I will not repeat them here.
  • the present invention prints parallelly spaced reflective layers and/or light absorbing layers on a flexible substrate, or prints parallel spaced light absorbing layers on a light transmissive substrate, followed by hot pressing by means of a mold having a prismatic structure.
  • the flexible substrate or the light-transmitting substrate is formed into a reflective anti-light screen or a transmissive anti-light screen, which avoids the disadvantage that the conventional coating method cannot ensure the strict linear motion of the coating particles, and can realize the precise manufacture of the anti-light screen.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

一种抗光屏幕及其制造方法，制造方法包括：S1：在柔性基材(10)上印刷出平行间隔设置的反射层(11)和/或吸光层(12)；S2：将具有棱镜结构的模具(20)与柔性基材（10）对准后热压，形成具有棱镜结构的抗光屏幕。通过在柔性基材（10）上印刷平行间隔设置的反射层（11）和/或吸光层（12），或者在透光基材上印刷平行间隔设置的吸光层（12），之后借助具有棱镜结构的模具（20）热压柔性基材（10）或透光基材，使之形成反射式抗光屏幕或透射式抗光屏幕，避免了传统涂覆方式不能保证涂料粒子严格直线运动的缺点，可实现抗光屏幕的精确制造。

Description

抗光屏幕及其制造方法 技术领域
本发明涉及一种用于投影的屏幕及其制造方法，尤其是一种抗光屏幕及其制造方法。
背景技术
目前市场上对于常规照明条件下投影屏幕的需求是比较巨大的，仅限于暗室使用的投影屏幕有着很大局限性。环境光对投影图像的质量会产生较大影响，为避免其降低投影图像的对比度，可以采用高亮度投影光源来降低环境光的影响，提高对比度。但是高亮度投影光源不节能，并且容易造成刺眼的现象。抗光投影屏幕是专为在高亮环境下使用而设计的新一代光学屏幕，其将屏幕进行横向的分割，变成一条一条横向的棱镜，在棱镜的面向环境光的一侧涂黑，面向投影光的一侧涂上反射层，从而抑制环境光的干扰，也称之为黑栅屏幕。例如，美国专利US674455882中提到一种背投抗光幕，在透明基材上形成棱镜结构，同时在棱镜结构的微凸条一个侧面布置遮光涂层，吸收环境光；而另一篇美国专利US7262911B2中则提供了一种反射屏幕，包括具有锯齿外观的基底，基底由白色树脂组成，可以反射光。
现有制造抗光屏幕的方法通常是利用喷涂、蒸镀等传统制造薄膜的方法，其无法只在微米尺寸的微凸条精确形成反射层或者吸光层，另外，喷涂方法中从喷嘴喷出的涂料粒子发散严重，无法定向覆盖微凸条的一个面。因此，如何精确地在制造由微米尺寸的微凸条组成的抗光屏幕，成为本领域技术人员急需解决的问题。
发明内容
本发明所要解决的技术问题在于针对现有技术的不足，提供一种抗光屏幕及其制造方法，通过在柔性基材上印刷平行间隔设置的反射 层和/或吸光层，或者在透光基材上印刷平行间隔设置的吸光层，之后借助具有棱镜结构的模具热压柔性基材或透光基材，使之形成反射式抗光屏幕或透射式抗光屏幕，避免了传统涂覆方式不能保证涂料粒子严格直线运动的缺点，可实现抗光屏幕的精确制造。
本发明所要解决的技术问题是通过如下技术方案实现的：
本发明提供一种抗光屏幕的制造方法，所述制造方法包括：S1：在柔性基材上印刷出平行间隔设置的反射层和/或吸光层；S2：将具有棱镜结构的模具与柔性基材对准后热压，形成具有棱镜结构的抗光屏幕。
优选地，所述柔性基材的材质为聚碳酸酯、聚氯乙烯或聚对苯二甲酸乙二醇酯中的至少一种。
优选地，所述柔性基材为吸光基材、反射基材或透光基材中的一种。
为了使柔性基材具有反射和吸光功能，所述反射层为含有漫反射粒子或镜面反射粒子的油墨或涂料。所述吸光层为含有炭黑、四氧化三铁或铜铬黑的油墨或涂料。
为了使抗光屏幕具备棱镜结构，所述模具为具有棱镜结构的软膜或雕刻有棱镜结构的辊筒。
为了使柔性基材与反射层和吸光层结合，所述印刷为喷墨打印或丝网印刷。
为了实现模具与柔性基材的精确对准，在S2中，所述对准包括：在柔性基材上设置基材对位条，在具有棱镜结构的模具上对应所述基材对位条设置模具对位条，热压时将基材对位条与模具对位条对准。
本发明还提供一种抗光屏幕，包括具有棱镜结构的柔性基材，棱镜结构的表面间隔设有反射层和/或吸光层，所述抗光屏幕上还设有基材对位条。
具体地，所述柔性基材的厚度为0.1mm-0.5mm，每个所述反射层和吸光层的宽度为25μm-200μm，所述反射层和吸光层的厚度为0.1μm-2μm，所述基材对位条的数量至少为2个，反射层的宽度＞基材对位条的宽度＞反射层宽度的1/10，2个基材对位条之间的距离为 10mm-100mm。
优选地，所述柔性基材的厚度为0.125mm-0.3mm，所述反射层和吸光层的宽度为50μm-100μm，所述反射层和吸光层的厚度为0.5μm-1μm。
综上所述，本发明通过在柔性基材上印刷平行间隔设置的反射层和吸光层，或者在透光基材上印刷平行间隔设置的吸光层，之后借助具有棱镜结构的模具热压柔性基材或透光基材，使之形成反射式抗光屏幕或透射式抗光屏幕，避免了传统涂覆方式不能保证涂料粒子严格直线运动的缺点，可实现抗光屏幕的精确制造。
下面结合附图和具体实施例，对本发明的技术方案进行详细地说明。
附图说明
图1为本发明抗光屏幕的制造方法流程示意图一；
图2为本发明抗光屏幕的制造方法流程示意图二。
具体实施方式
图1为本发明抗光屏幕的制造方法流程示意图，如图1所示，本发明提供一种抗光屏幕的制造方法，所述制造方法包括：
S1：在柔性基材10上印刷出平行间隔设置的反射层11和/或吸光层12；
S2：将具有棱镜结构的模具20与柔性基材10对准后热压，形成具有棱镜结构的抗光屏幕。
具体来说，所述柔性基材10可以采用PC(聚碳酸酯)、PVC(聚氯乙烯)或PET(聚对苯二甲酸乙二醇酯)中的至少一种；反射层可以为含有漫反射粒子如硫酸钡、氧化铝等的油墨或涂料，也可以为含有镜面反射粒子如银、铝粒子等的油墨或涂料；吸光层可以是炭黑、四氧化三铁或铜铬黑等吸光材料组成的油墨或涂料。
柔性基材10的厚度为0.1mm-0.5mm，优选为0.125mm-0.3mm。
在S1中，如何在柔性基材10上印刷出平行间隔设置的反射层和/ 或吸光层有多种方式可以实现，例如，如图1所示，可以先在柔性基材10上印刷出平行间隔排列的反射层11或吸光层12，待反射层11或吸光层12半固化后再在反射层11或吸光层12的间隙中印刷吸光层12或反射层11，从而形成平行间隔设置的反射层11和吸光层12。所述印刷包括但不限于喷墨打印、丝网印刷等方式。
或者，也可以先在柔性基材10上整体印刷上反射层或吸光层，待反射层或吸光层半固化后，再在反射层或吸光层上印刷出平行间隔排列的吸光层或反射层，从而形成平行间隔设置的反射层和吸光层。
或者，也可以直接选用具有反射功能的柔性基材即反射基材，如含有氧化铝、氧化钛、硫酸钡等反射粒子的高反射聚酯薄膜，在反射基材上印刷出平行间隔排列的吸光层，从而形成平行间隔设置的反射层和吸光层；同理，也可以直接选用具有吸光功能的柔性基材即吸光基材，在吸光基材上印刷出平行间隔排列的反射层，从而形成平行间隔设置的反射层和吸光层。
图2为本发明抗光屏幕的制造方法流程示意图二。如图2所示，为了实现S2中模具20与柔性基材10的精确对准，在上述S2中，可以在柔性基材上设置基材对位条31，在具有棱镜结构的模具20上设置模具对位条32，所述基材对位条31与模具对位条32对应设置，优选的基材对位条31和模具对位条32的数量均为2个。需要说明的是，本发明并不限制基材对位条31和模具对位条32的数量，基材对位条31和模具对位条32的数量在同一抗光屏幕中可以有至少2个或仅有1个。例如，采用连续的柔性基材连续热压成型制备抗光屏幕时，在同一抗光屏幕上可以有多条基材对位条31；同理，与之相对应的，模具对位条32在同一模具中也可以有多个。
当需要将具有棱镜结构的模具20与柔性基材10对准时，本领域技术人员可以根据基材对位条31与模具对位条32是否对准来判断模具20与柔性基材10是否对准，从而保证了其精密性。
设置基材对位条31的方法有多种，例如可以在印刷平行间隔设置的反射层11和吸光层12时间隔一段距离不进行印刷，即留出一段空白条作为基材对位条31，也可以在印刷平行间隔设置的反射层11和吸 光层12后在其表面再印刷出一段基材对位条31。
在本发明中，反射层的宽度＞基材对位条的宽度＞反射层宽度的1/10，或者，吸光层12的宽度＞基材对位条31的宽度＞吸光层12宽度的1/10。2个基材对位条31之间的距离可根据实际情况设定，优选为10mm-100mm。
在本发明中，每个反射层和吸光层的宽度为25μm-200μm，优选为50μm-100μm。每个反射层和吸光层的宽度可以相等也可以逐渐变化。反射层和吸光层的厚度为0.1μm-2μm，优选为0.5μm-1μm。当然，本领域技术人员也可以根据实际需要改变上述宽度及厚度，本发明并不以此为限。
所述具有棱镜结构的模具20可以为具有棱镜结构的软膜，也可以是雕刻有棱镜结构的辊筒等。本发明中的热压工艺采用常规的热压工艺即可，既可以是连续热压，也可以是单片热压。一般而言，热压工艺的步骤包括：对原料和/或模具加热到一定温度；然后，通过模具对原料进行压制成型，使得原料在一定的温度下成型。例如，本发明中，可以将柔性基材和作为模具的辊筒同时加热到预定的温度，然后对柔性基材进行热压成型；也可以将柔性基材单独加热到一定温度，然后采用软模直接对准柔性基材进行热压成型。本发明并不限制棱镜结构的深度H、宽度L和角度α，本领域技术人员可以根据实际需要选择不同的模具，从而得到不同结构的抗光屏幕，只要选择的模具和柔性基材上印刷的反射层和吸光层匹配即可，本发明也不限制热压的温度、压力等参数，本领域技术人员可以根据柔性基材、反射层和吸光层的种类等对相关参数进行调整。同时，由于棱镜结构的深度H与柔性基材的整体厚度相比较小，因此本发明中所制得的抗光屏幕的最终厚度同柔性基材原料的厚度基本相同。
本发明还提供另一种抗光屏幕的制造方法，所述制造方法包括：
S10：在透光基材上印刷出平行间隔设置的吸光层；
S20：将具有棱镜结构的模具与透光基材对准后热压，形成具有棱镜结构的抗光屏幕。
本制造方法与上述制造方法大致相同，将柔性基材选择为透光基 材，将平行间隔设置的反射层和吸光层变为平行间隔设置的吸光层，从而制造出透射式抗光屏幕，上述制造方法中所制造的抗光屏幕为透射式抗光屏幕。
实施例一
在本实施例中，柔性基材10采用厚度为0.2mm的聚对苯二甲酸乙二醇酯，印刷方式采用喷墨打印，反射层为含有氧化铝等的油墨，吸光层为含有炭黑的油墨。
首先在柔性基材10上印刷出平行间隔排列的反射层11，每个反射层11的宽度为100μm，厚度为0.2μm，且多个反射层11之间间隔100μm；待反射层11半固化后再在反射层11的间隙中印刷吸光层12，从而形成多个间隔设置的宽度为100μm的吸光层12，其厚度为0.2μm。
之后将具有棱镜结构的模具20与柔性基材10对准后热压，形成具有棱镜结构的抗光屏幕。
实施例二
在本实施例中，柔性基材采用厚度为0.3mm的聚对苯二甲酸乙二醇酯，印刷方式采用丝网印刷，反射层为含有铝粒子等的涂料，吸光层为含有四氧化三铁的涂料。
首先在柔性基材10上预留出基材对位条31的位置，如间隔50mm设置2个宽度为20μm的空白条，在具有棱镜结构的模具上对应基材对位条31设置2个模具对位条32，然后在柔性基材10的其余位置印刷出平行间隔排列的反射层，每个反射层的宽度为80μm，厚度为0.5μm，待反射层半固化后再在反射层的间隙中印刷吸光层，从而形成多个间隔设置的的吸光层12。
之后将具有棱镜结构的模具上的模具对位条32与柔性基材上的基材对位条31对准后热压，形成具有棱镜结构的抗光屏幕。
所述抗光屏幕表面除了具有棱镜结构，还保留有2个基材对位条31。
实施例三
本实施例与实施例一相比，其区别在于将柔性基材选择为透光基材，将平行间隔设置的反射层和吸光层变为平行间隔设置的吸光层，从而制造出透射式抗光屏幕。其他方法与实施例一相同，在此不再赘述。
显然，在其他实施方式中，也可以将柔性基材选择为吸光基材或反射基材；并且，相应的将平行间隔设置的反射层和吸光层变为平行间隔设置的反射层或吸光层，从而制造出反射式抗光屏幕。在此不再赘述。
综上所述，本发明通过在柔性基材上印刷平行间隔设置的反射层和/或吸光层，或者在透光基材上印刷平行间隔设置的吸光层，之后借助具有棱镜结构的模具热压柔性基材或透光基材，使之形成反射式抗光屏幕或透射式抗光屏幕，避免了传统涂覆方式不能保证涂料粒子严格直线运动的缺点，可实现抗光屏幕的精确制造。

Claims (11)

  1. 一种抗光屏幕的制造方法，其特征在于，所述制造方法包括：
    S1：在柔性基材(10)上印刷出平行间隔设置的反射层(11)和/或吸光层(12)；
    S2：将具有棱镜结构的模具(20)与柔性基材对准后热压，形成具有棱镜结构的抗光屏幕。
  2. 如权利要求1所述的制造方法，其特征在于，所述柔性基材(10)的材质为聚碳酸酯、聚氯乙烯或聚对苯二甲酸乙二醇酯中的至少一种。
  3. 如权利要求1所述的制造方法，其特征在于，所述柔性基材(10)为吸光基材、反射基材或透光基材中的一种。
  4. 如权利要求1所述的制造方法，其特征在于，所述反射层(11)为含有漫反射粒子或镜面反射粒子的油墨或涂料。
  5. 如权利要求1所述的制造方法，其特征在于，所述吸光层(12)为含有炭黑、四氧化三铁或铜铬黑的油墨或涂料。
  6. 如权利要求1所述的制造方法，其特征在于，所述模具(20)为具有棱镜结构的软膜或雕刻有棱镜结构的辊筒。
  7. 如权利要求1所述的制造方法，其特征在于，所述印刷为喷墨打印或丝网印刷。
  8. 如权利要求1所述的制造方法，其特征在于，在S2中，所述对准包括：在柔性基材(10)上设置基材对位条(31)，在具有棱镜结构的模具(20)上对应所述基材对位条设置模具对位条(32)，热压时将基材对位条与模具对位条对准。
  9. 一种抗光屏幕，包括具有棱镜结构的柔性基材(10)，棱镜结构的表面间隔设有反射层(11)和/或吸光层(12)，其特征在于，所述抗光屏幕上还设有基材对位条(31)。
  10. 如权利要求9所述的抗光屏幕，其特征在于，所述柔性基材(10)的厚度为0.1mm-0.5mm，每个所述反射层(11)和吸光层(12)的宽度为25μm-200μm，所述反射层和吸光层的厚度为0.1μm-2μm，所述基材对位条(31)的数量至少为2个，反射层的宽度＞基材对位条的宽度＞反射层宽度的1/10，2个基材对位条之间的距离为10mm-100mm。
  11. 如权利要求10所述的抗光屏幕，其特征在于，所述柔性基材(10)的厚度为0.125mm-0.3mm，所述反射层(11)和吸光层的宽度(12)为50μm-100μm，所述反射层和吸光层的厚度为0.5μm-1μm。
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