WO2015176629A1 - 显示屏背光源及led平板灯的ps扩散板生产方法 - Google Patents

显示屏背光源及led平板灯的ps扩散板生产方法 Download PDF

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WO2015176629A1
WO2015176629A1 PCT/CN2015/079160 CN2015079160W WO2015176629A1 WO 2015176629 A1 WO2015176629 A1 WO 2015176629A1 CN 2015079160 W CN2015079160 W CN 2015079160W WO 2015176629 A1 WO2015176629 A1 WO 2015176629A1
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parts
optical
masterbatch
weight ratio
microspheres
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蔡文珍
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蔡文珍
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00Processes of treating or compounding macromolecular substances
    • C08J3/20Compounding polymers with additives, e.g. colouring
    • C08J3/22Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/06Polyethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10Homopolymers or copolymers of propene
    • C08L23/12Polypropene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02Homopolymers or copolymers of hydrocarbons
    • C08L25/04Homopolymers or copolymers of styrene
    • C08L25/06Polystyrene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/18Homopolymers or copolymers of nitriles
    • C08L33/20Homopolymers or copolymers of acrylonitrile
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04Polysiloxanes

Definitions

  • the present invention relates to the technical field of production technology of a diffusion plate, and more particularly to a method for producing a PS diffusion plate of a direct type display backlight and an LE D panel lamp.
  • the diffusion plate used in the backlight of the display screen is a semi-transparent plexiglass plate, and the light source generally uses an LED light bar, and the diffusion plate used for the direct-type display backlight and the LED flat lamp needs to have Good optical properties, including light dispersion, refraction and transmission, the prior art is to process bumps or pits on one or both surfaces of the diffuser, which is used to improve the diffuser pair.
  • the light dispersing performance enables the light emitted from the LED strip light source to be homogenized after being emitted through the diffusing plate.
  • This technique improves the dispersion performance of the diffusing plate by changing the surface morphology of the diffusing plate, although it has a certain
  • the dispersion forms an atomized optical effect on the surface of the diffuser plate, which greatly reduces the refractive properties and light transmission properties of the diffuser plate, which is necessary to be improved.
  • the object of the present invention is to provide a diffusion board for a direct-type display backlight and an LED panel lamp with improved production process, which is simple in process, easy to implement, and low in production cost. And the diffused plate produced has excellent optical properties.
  • a method for producing a PS diffuser for a display backlight and an LED panel lamp comprising the following steps:
  • the optical masterbatch step comprises: 40 to 90 parts of the material selected from 100 parts of the material and 10 to 60 parts of the transparent plastic, the transparent plastic includes At least one light transmissive plastic having an optical refractive index different from the optical refractive index of the material; the components of the optical masterbatch are uniformly stirred and mixed, and then put into a twin-screw granulator to produce an optical master batch, and the total weight ratio is 100 parts.
  • Optical masterbatch [0008] In the process of manufacturing an optical masterbatch by a twin-screw granulator, one or more of the following components are added, and the resulting optical masterbatch has several different refractive indices.
  • anti-ultraviolet light absorber 0.001 ⁇ 0.05 parts
  • Fluorescent whitening agent 0.0001 ⁇ 0.005 parts
  • the extrusion molding step 100 parts of the material is selected according to the weight ratio, and 1 to 10 parts of the optical masterbatch prepared by the optical master batching step is selected, stirred and uniformly mixed, and then put into an extrusion molding machine, and extruded. Machine to form a diffuser plate;
  • the optical mastering step of preparing the optical masterbatch includes a silicone microsphere, a PMMA microsphere, a MS microsphere, a PP microsphere, a PMMA plastic particle, and a PP.
  • a silicone microsphere a silicone microsphere, a PMMA microsphere, a MS microsphere, a PP microsphere, a PMMA plastic particle, and a PP.
  • the optical mastering step is performed, and the twin-screw granulator is divided into a feeding section, a melting section, a mixing section, a discharging section, and a section of the twin-screw granulator according to the granulation process.
  • the temperature is 170 degrees to 270 degrees
  • the pressure is from IMpa to 4.5Mpa
  • the prepared masterbatch has different refractive indexes, so that the chemical polymers with different refractive indexes are uniformly dispersed, and the LED point light source has multi-refraction through the diffusion plate. Rate to emit a uniform surface light source;
  • the extrusion molding machine is divided into a feeding section, a melting section, a mixing section, and a discharging section according to a molding process, and the temperature of each section of the extrusion molding machine is 170 degrees to 270 degrees, and the pressure is IMpa to 4.5Mpa
  • cutting step cutting the diffuser sheet into an economical size diffuser
  • the optical masterbatch is composed of the following two weight ratio components, [0023] 60 parts of the material selected from 100 parts of the material,
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.
  • the step of preparing the material is prepared, and 100 parts of PS plastic particles are selected as the material according to the weight ratio;
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.
  • the step of preparing the material is prepared, and 100 parts of PS plastic particles are selected as the material according to the weight ratio;
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • Anti-ultraviolet light absorber 0.001 ⁇ 0.05 parts
  • Fluorescent whitening agent 0.0001 ⁇ 0.005 parts.
  • the step of preparing the material is selected, and 100 parts of PS plastic particles are selected as the weight ratio. This material;
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • the mixture was uniformly stirred and mixed, and then placed in a twin-screw granulator to produce an optical master batch to prepare an optical master batch having a total weight ratio of 100 parts.
  • the step of preparing the material is prepared, and 100 parts of PS plastic particles are selected as the material according to the weight ratio;
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • the mixture was uniformly stirred and mixed, and then placed in a twin-screw granulator to produce an optical master batch to prepare an optical master batch having a total weight ratio of 100 parts.
  • the step of preparing the material is prepared, and 100 parts of PS plastic particles are selected as the material according to the weight ratio;
  • optical masterbatch step the optical masterbatch is mixed in a weight ratio comprising two or more of the following components, [0055] 40 to 90 parts of the material selected from 100 parts of the material,
  • the step of preparing the material is prepared, and 100 parts of PS plastic particles are selected as the material according to the weight ratio;
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following three weight ratio components,
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.
  • the present invention has advantages over the prior art: the present invention improves the production process of the diffusion plate used for the direct type display backlight and the LED panel lamp, through the process The optical properties of the diffusing plate are changed from the inside of the diffusing plate, and the chemical polymer having different refractive indexes therein is uniformly dispersed, instead of being changed from the surface, the process of the invention is simple, easy to implement, low in production cost, and the diffused plate produced. Has excellent optical properties.
  • a method for producing a PS diffuser for a display backlight and an LED panel lamp includes the following steps:
  • optical masterbatch step the components of the optical masterbatch include, by weight ratio:
  • the translucent plastic comprises at least one kind of optical refraction having an optical refractive index different from the optical refractive index of the material.
  • Plastics, wherein the transparent plastics made of optical masterbatch include silicone microspheres, PMMA microspheres, MS microspheres, PP microspheres, P MMA plastic particles, PP plastic particles, PE plastic particles and MS plastic particles. One or more mixtures;
  • optical master batch The components of the optical master batch are uniformly stirred and mixed, and then put into a twin-screw granulator to produce an optical master batch to prepare an optical master batch having a total weight ratio of 100 parts;
  • the twin-screw granulator is divided into a feeding section, a melting section, a mixing section, and a discharging section according to a granulation process, and the temperature of each section of the twin-screw granulator is 170 degrees to 270 degrees, and the pressure is IMPa to 4.5Mpa, made mother
  • the particles have different refractive indices, so that the chemical polymers with different refractive indexes are uniformly dispersed, and the LED point light source has a multi-refractive index through the diffusing plate to emit a uniform surface light source;
  • anti-ultraviolet light absorber 0.001 ⁇ 0.05 parts
  • the total weight of the above components, the material and the light transmissive plastic added during the process of manufacturing the optical masterbatch by the twin-screw granulator is 100 parts; or, the total weight of the material and the transparent plastic
  • the above weight ratio components were additionally added during the production of the optical master batch by the twin-screw granulator.
  • the extrusion molding step 100 parts of the material is selected according to the weight ratio, and 1 to 10 parts of the optical masterbatch prepared by the optical master batching step is selected, stirred and uniformly mixed, and then put into an extrusion molding machine, and extruded.
  • the machine forms a diffusing plate; the extrusion molding machine is divided into a feeding interval, a melting interval and a mixing interval according to a molding process.
  • the discharge interval, the temperature of each section of the extrusion molding machine is 170 degrees to 270 degrees, the pressure is IMpa to 4.5Mpa; no lubrication dispersant, toughening agent, anti-ultraviolet light absorber is needed in the extrusion molding step. And the fluorescent brightener, the adjustment of this process step can further improve the light transmittance of the diffuser.
  • cutting step cutting the diffuser plate into an economical size diffuser
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components, [0112] 60 parts of the material selected from 100 parts of the material,
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • One or more of the following components are added during the manufacture of the optical masterbatch by the twin-screw granulator, and the resulting optical masterbatch has several different refractive indices.
  • Fluorescent whitening agent 0.0001 to 0.005 parts.
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following two weight ratio components
  • the mixture was uniformly stirred and mixed, and then placed in a twin-screw granulator to produce an optical master batch to prepare an optical master batch having a total weight ratio of 100 parts.
  • optical masterbatch step the optical masterbatch is mixed in a weight ratio comprising two or more of the following components, [0187] 40 to 90 parts of the material selected from 100 parts of the material,
  • the total weight ratio is 10 ⁇ 60 parts
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.
  • optical masterbatch step the optical masterbatch is mixed by the following two or more components by weight ratio, [0195] 40 to 90 parts of the material selected from 100 parts of the material,
  • At least 0.001 to 0.05 parts of a toughening agent, 0.0001 to 0.005 parts of a fluorescent whitening agent, and 0.001 to 0.05 parts of a lubricating dispersing agent are added during the production of the optical master batch by the twin-screw granulator.
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following three weight ratio components,
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following three weight ratio components,
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.
  • the optical masterbatch step the optical masterbatch is composed of a mixture of the following three weight ratio components,
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.
  • optical masterbatch step the optical masterbatch is composed of a mixture of the following three weight ratio components,
  • At least 0.001 to 0.05 parts of a lubricating dispersant is added during the production of the optical master batch by the twin-screw granulator.

Abstract

本发明公开了一种显示屏背光源及LED平板灯的PS扩散板生产方法,它包括本料步骤、制作光学母粒步骤、挤出成型步骤、消除应力步骤和裁切步骤,本发明通过该工艺从扩散板内部改变扩散板的光学性能,让其内部具有不同折射率的化学聚合物分散均匀,而非从表面进行改变,本发明工艺简单,易于实施,生产成本低,并且生产出来的扩散板具有极好的光学性能。

Description

说明书 发明名称:显示屏背光源及 LED平板灯的 PS扩散板生产方法 技术领域
[0001] 本发明涉及扩散板的生产工艺技术领域, 尤其是涉及直下式显示屏背光源及 LE D平板灯的 PS扩散板生产方法。
背景技术
[0002] 现有技术中, 使用于显示屏背光源中的扩散板为一半透明的有机玻璃板材, 光 源一般使用 LED光条, 使用于直下式显示屏背光源及 LED平板灯的扩散板需要具 有很好的光学性能, 包括对光的分散性能、 折射性能和穿透射性能, 现有技术 是在扩散板的一表面或两表面加工出凹凸点或凹点条纹, 它用于提高扩散板对 光的分散性能, 使 LED光条点状光源发射出的光线通过扩散板发射出后能够均匀 化, 这种技术通过改变扩散板的表面形态而提高扩散板对光的分散性能, 它虽 然具有一定的分散作用, 但是, 它会在扩散板的表面形成一种雾化的光学效果 , 大幅度降低了扩散板的折射性能和透光性能, 此有必要予以改进。
技术问题
[0003] 针对现有技术存在的不足, 本发明的目的是提供一种改进生产工艺的使用于直 下式显示屏背光源及 LED平板灯的扩散板, 它工艺简单, 易于实施, 生产成本低 , 并且生产出来的扩散板具有极好的光学性能。
问题的解决方案
技术解决方案
[0004] 了实现上述目的, 本发明所采用的技术方案是:
[0005] 显示屏背光源及 LED平板灯的 PS扩散板生产方法, 包括以下步骤:
[0006] 准备本料步骤, 选用 PS塑料颗粒作为本料;
[0007] 制作光学母粒步骤, 光学母粒的组份按重量比包括: 从 100份本料中选取出来 的 40〜90份本料以及 10〜60份透光性塑料, 透光性塑料包括至少一种光学折射 率不同于本料的光学折射率的透光性塑料; 将光学母粒的组份均匀搅拌混合后 投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光学母粒; [0008] 在双螺杆造粒机制造光学母粒的过程中加入以下组分中一种或一种以上的混合 物, 制成的光学母粒具有若干种不同的折射系数,
[0009] 润滑分散剂 0.001〜0.05份
[0010] 增韧剂 0.001〜0.05份
[0011] 抗紫外光吸收剂 0.001〜0.05份
[0012] 萤光增白剂 0.0001〜0.005份;
[0013] 挤出成型步骤, 按重量比选取 100份本料, 选取 1〜10份制作光学母粒步骤制造 出来的光学母粒, 搅拌混合均匀后投入到挤出成型机中, 通过挤出成型机成型 出扩散板板材;
[0014] 成品。
[0015] 进一步的技术方案中, 所述制作光学母粒步骤, 制成光学母粒的透光性塑料包 括有机硅微球、 PMMA微球、 MS微球、 PP微球、 PMMA塑料颗粒、 PP塑料颗粒 、 PE塑料颗粒和 MS塑料颗粒的一种或一种以上的混合物。
[0016] 进一步的技术方案中, 制作光学母粒步骤, 双螺杆造粒机按造粒过程区分为进 料区间、 融熔区间、 混炼区间、 出料区间, 双螺杆造粒机各区间的温度为 170度 至 270度, 压力为 IMpa至 4.5Mpa, 制成的母粒具有不同的折射系数, 让其不同折 射率的化学聚合物分散均匀, 而使 LED点光源通过该扩散板有多折射率发射出均 匀的面光源;
[0017] 挤出成型步骤, 挤出成型机按成型过程区分为进料区间、 融熔区间、 混炼区间 、 出料区间, 挤出成型机各区间的温度为 170度至 270度, 压力为 IMpa至 4.5Mpa
[0018] 消除应力步骤, 在挤出设备后设备加热设备, 对扩散板板材进行加热, 消除扩 散板板材的应力;
[0019] 裁切步骤, 将扩散板板材裁切成经济尺寸的扩散板;
[0020] 成品。
[0021] 于优选技术方案中, 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料 [0022] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成, [0023] 从 100份本料中选取出来的 60份本料,
[0024] 40份有机硅微球、 PMMA微球、 MS微球或 PP微球中的一种;
[0025] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒;
[0026] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0027] 于另一优选技术方案中, 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为 本料;
[0028] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0029] 从 100份本料中选取出来的 80份本料,
[0030] 20份有机硅微球、 PMMA微球、 MS微球或 PP微球中的一种;
[0031] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒;
[0032] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0033] 于另一优选技术方案中, 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为 本料;
[0034] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0035] 从 100份本料中选取出来的 40〜90份本料,
[0036] 10〜60份有机硅微球、 PMMA微球、 MS微球、 PP微球、 PMMA塑料颗粒、 PP 塑料颗粒、 PE塑料颗粒和 MS塑料颗粒中的一种;
[0037] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒;
[0038] 在双螺杆造粒机制造光学母粒的过程中加入以下组分中一种或一种以上的混合 物, 制成的光学母粒具有若干种不同的折射系数,
[0039] 润滑分散剂 0.001〜0.05份
[0040] 增韧剂 0.001〜0.05份
[0041] 抗紫外光吸收剂 0.001〜0.05份
[0042] 萤光增白剂 0.0001〜0.005份。
[0043] 于另一优选技术方案中, 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为 本料;
[0044] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0045] 从 100份本料中选取出来的 40〜60份本料,
[0046] 40〜60份有机硅微球、 PMMA微球、 MS微球、 PP微球、 PMMA塑料颗粒、 PP 塑料颗粒、 PE塑料颗粒和 MS塑料颗粒中的一种;
[0047] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒。
[0048] 于另一优选技术方案中, 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为 本料;
[0049] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0050] 从 100份本料中选取出来的 61〜90份本料,
[0051] 10〜39份有机硅微球、 PMMA微球、 MS微球、 PP微球、 PMMA塑料颗粒、 PP 塑料颗粒、 PE塑料颗粒和 MS塑料颗粒中的一种;
[0052] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒。
[0053] 于另一优选技术方案中, 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为 本料;
[0054] 制作光学母粒步骤, 光学母粒按重量比包括以下两种或两种以上的组份混合, [0055] 从 100份本料中选取出来的 40〜90份本料,
[0056] 有机硅微球、 PMMA微球、 MS微球、 PP微球、 PMMA塑料颗粒、 PP塑料颗粒
、 PE塑料颗粒和 MS塑料颗粒中的两种或两种以上的混合物, 总重量比为 10〜60 份,
[0057] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒。
[0058] 于另一优选技术方案中, 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为 本料;
[0059] 制作光学母粒步骤, 光学母粒由以下三种重量比的组份混合组成,
[0060] 从 100份本料中选取出来的 60份本料, [0061] 20份 PP塑料颗粒、 PE塑料颗粒或 MS塑料颗粒中的一种,
[0062] 20份有机硅微球、 PMMA微球、 MS微球或 PP微球中的一种,
[0063] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒;
[0064] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
发明的有益效果
有益效果
[0065] 采用上述结构后, 本发明和现有技术相比所具有的优点是: 本发明是对使用于 直下式显示屏背光源及 LED平板灯的扩散板的生产工艺进行改进, 通过该工艺从 扩散板内部改变扩散板的光学性能, 让其内部具有不同折射率的化学聚合物分 散均匀, 而非从表面进行改变, 本发明工艺简单, 易于实施, 生产成本低, 并 且生产出来的扩散板具有极好的光学性能。
实施该发明的最佳实施例
本发明的最佳实施方式
[0066] 以下所述仅为本发明的较佳实施例, 并不因此而限定本发明的保护范围。
[0067] 实施例一
[0068] 显示屏背光源及 LED平板灯的 PS扩散板生产方法, 包括以下步骤:
[0069] 准备本料步骤, 选用 PS塑料颗粒作为本料;
[0070] 制作光学母粒步骤, 光学母粒的组份按重量比包括:
[0071] 从 100份本料中选取出来的 40〜90份本料以及 10〜60份透光性塑料, 透光性塑 料包括至少一种光学折射率不同于本料的光学折射率的透光性塑料, 其中, 制 成光学母粒的透光性塑料包括有机硅微球、 PMMA微球、 MS微球、 PP微球、 P MMA塑料颗粒、 PP塑料颗粒、 PE塑料颗粒和 MS塑料颗粒的一种或一种以上的 混合物;
[0072] 将光学母粒的组份均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重 量比为 100份的光学母粒;
[0073] 双螺杆造粒机按造粒过程区分为进料区间、 融熔区间、 混炼区间、 出料区间, 双螺杆造粒机各区间的温度为 170度至 270度, 压力为 IMpa至 4.5Mpa, 制成的母 粒具有不同的折射系数, 让其不同折射率的化学聚合物分散均匀, 而使 LED点光 源通过该扩散板有多折射率发射出均匀的面光源;
[0074] 在双螺杆造粒机制造光学母粒的过程中加入以下组分中一种或一种以上的混合 物, 制成的光学母粒具有若干种不同的折射系数,
[0075] 润滑分散剂 0.001〜0.05份
[0076] 增韧剂 0.001〜0.05份
[0077] 抗紫外光吸收剂 0.001〜0.05份
[0078] 萤光增白剂 0.0001〜0.005份;
[0079] 其中, 在双螺杆造粒机制造光学母粒的过程中加入的上述组分、 本料和透光性 塑料的总重量为 100份; 或者, 本料和透光性塑料的总重量为 100份, 在双螺杆 造粒机制造光学母粒的过程中另外加入的上述重量比的组分。
[0080] 挤出成型步骤, 按重量比选取 100份本料, 选取 1〜10份制作光学母粒步骤制造 出来的光学母粒, 搅拌混合均匀后投入到挤出成型机中, 通过挤出成型机成型 出扩散板板材; 挤出成型机按成型过程区分为进料区间、 融熔区间、 混炼区间
、 出料区间, 挤出成型机各区间的温度为 170度至 270度, 压力为 IMpa至 4.5Mpa ; 在挤出成型步骤中不需要再添加润滑分散剂、 增韧剂、 抗紫外光吸收剂和萤 光增白剂, 这种工艺步骤的调整, 能进一步提高扩散板的透光率。
[0081] 消除应力步骤, 在挤出设备后设备加热设备, 对扩散板板材进行加热, 消除扩 散板板材的应力;
[0082] 裁切步骤, 将扩散板板材裁切成经济尺寸的扩散板;
[0083] 成品。
[0084] 实施例二
[0085] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0086] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0087] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0088] 从 100份本料中选取出来的 60份本料,
[0089] 40份有机硅微球; [0090] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒;
[0091] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0092] 实施例三
[0093] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0094] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0095] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0096] 从 100份本料中选取出来的 60份本料,
[0097] 40份 PMMA微球;
[0098] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒;
[0099] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0100] 实施例四
[0101] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0102] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0103] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0104] 从 100份本料中选取出来的 60份本料,
[0105] 40份 MS微球;
[0106] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒;
[0107] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0108] 实施例五
[0109] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0110] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0111] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成, [0112] 从 100份本料中选取出来的 60份本料,
[0113] 40份 PP微球中的一种;
[0114] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒;
[0115] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0116] 实施例六
[0117] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0118] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0119] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0120] 从 100份本料中选取出来的 80份本料,
[0121] 20份有机硅微球;
[0122] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒;
[0123] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0124] 实施例七
[0125] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0126] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0127] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0128] 从 100份本料中选取出来的 80份本料,
[0129] 20份 PMMA微球;
[0130] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒;
[0131] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0132] 实施例八
[0133] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例: [0134] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0135] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0136] 从 100份本料中选取出来的 60份本料,
[0137] 40份 PMMA塑料颗粒;
[0138] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒;
[0139] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂和 0.0
01〜0.05份增韧剂。
[0140] 实施例九
[0141] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0142] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0143] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0144] 从 100份本料中选取出来的 60份本料,
[0145] 40份 PP塑料颗粒;
[0146] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒;
[0147] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂和 0.0
01〜0.05份增韧剂。
[0148] 实施例十
[0149] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0150] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0151] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0152] 从 100份本料中选取出来的 80份本料,
[0153] 20份机 MS微球或 PP微球中的一种;
[0154] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒; [0155] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0156] 实施例十一
[0157] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0158] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0159] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0160] 从 100份本料中选取出来的 40〜90份本料,
[0161] 10〜60份有机硅微球、 PMMA微球、 MS微球、 PP微球、 PMMA塑料颗粒、 PP 塑料颗粒、 PE塑料颗粒和 MS塑料颗粒中的一种;
[0162] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒;
[0163] 在双螺杆造粒机制造光学母粒的过程中加入以下组分中一种或一种以上的混合 物, 制成的光学母粒具有若干种不同的折射系数,
[0164] 润滑分散剂 0.001〜0.05份
[0165] 增韧剂 0.001〜0.05份
[0166] 抗紫外光吸收剂 0.001〜0.05份
[0167] 萤光增白剂 0.0001〜0.005份。
[0168] 实施例十二
[0169] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0170] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0171] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0172] 从 100份本料中选取出来的 40〜60份本料,
[0173] 40〜60份有机硅微球、 PMMA微球、 MS微球、 PP微球、 PMMA塑料颗粒、 PP 塑料颗粒、 PE塑料颗粒和 MS塑料颗粒中的一种;
[0174] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒。
[0175] [0176] 实施例十三
[0177] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0178] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0179] 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成,
[0180] 从 100份本料中选取出来的 61〜90份本料,
[0181] 10〜39份有机硅微球、 PMMA微球、 MS微球、 PP微球、 PMMA塑料颗粒、 PP 塑料颗粒、 PE塑料颗粒和 MS塑料颗粒中的一种;
[0182] 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 100份的光 学母粒。
[0183] 实施例十四
[0184] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0185] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0186] 制作光学母粒步骤, 光学母粒按重量比包括以下两种或两种以上的组份混合, [0187] 从 100份本料中选取出来的 40〜90份本料,
[0188] 有机硅微球、 PMMA微球、 MS微球、 PP微球、 中的两种或两种以上的混合物
, 总重量比为 10〜60份,
[0189] 均匀搅拌混合后投入双螺杆造粒机造成 100份的光学母粒,
[0190] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0191] 实施例十五
[0192] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0193] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0194] 制作光学母粒步骤, 光学母粒按重量比包括以下两种或两种以上的组份混合, [0195] 从 100份本料中选取出来的 40〜90份本料,
[0196] PMMA塑料颗粒、 PP塑料颗粒、 PE塑料颗粒和 MS塑料颗粒中的两种或两种以 上的混合物, 总重量比为 10〜60份, [0197] 均匀搅拌混合后投入双螺杆造粒机造成 100份的光学母粒,
[0198] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份增韧剂、 0.0001 〜0.005份萤光增白剂和 0.001〜0.05份润滑分散剂。
[0199]
[0200] 实施例十六
[0201] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0202] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0203] 制作光学母粒步骤, 光学母粒由以下三种重量比的组份混合组成,
[0204] 从 100份本料中选取出来的 60份本料,
[0205] 20份 PP塑料颗粒,
[0206] 20份有机硅微球,
[0207] 均匀搅拌混合后投入双螺杆造粒机造成 100份的光学母粒,
[0208] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0209] 实施例十七
[0210] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0211] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0212] 制作光学母粒步骤, 光学母粒由以下三种重量比的组份混合组成,
[0213] 从 100份本料中选取出来的 60份本料,
[0214] 20份 PP塑料颗粒,
[0215] 20份有 PMMA微球,
[0216] 均匀搅拌混合后投入双螺杆造粒机造成 100份的光学母粒,
[0217] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0218] 实施例十八
[0219] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0220] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料; [0221] 制作光学母粒步骤, 光学母粒由以下三种重量比的组份混合组成,
[0222] 从 100份本料中选取出来的 60份本料,
[0223] 20份 PP塑料颗粒,
[0224] 20份 MS微球或 PP微球,
[0225] 均匀搅拌混合后投入双螺杆造粒机造成 100份的光学母粒,
[0226] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0227] 实施例十九
[0228] 本实施例的主要步骤、 工艺与实施例一相同, 这里不再赘述, 其不同之处在于 组份的选择和相应比例:
[0229] 准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料;
[0230] 制作光学母粒步骤, 光学母粒由以下三种重量比的组份混合组成,
[0231 ] 从 100份本料中选取出来的 60份本料,
[0232] 20份 PE塑料颗粒或 MS塑料颗粒,
[0233] 20份有机硅微球、 PMMA微球、 MS微球或 PP微球中的一种,
[0234] 均匀搅拌混合后投入双螺杆造粒机造成 100份的光学母粒,
[0235] 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分散剂。
[0236] 以上内容仅为本发明的较佳实施例, 对于本领域的普通技术人员, 依据本发明 的思想, 在具体实施方式及应用范围上均会有改变之处, 本说明书内容不应理 解为对本发明的限制。

Claims

权利要求书
[权利要求 1] 显示屏背光源及 LED平板灯的 PS扩散板生产方法, 其特征在于: 包括 以下步骤:
准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料; 制作光学母粒步骤, 光学母粒的组份按重量比包括: 从 100份本料中 选取出来的 40〜90份本料以及 10〜60份透光性塑料, 透光性塑料包括 至少一种光学折射率不同于本料的光学折射率的透光性塑料; 将光学 母粒的组份均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总 重量比为 100份的光学母粒, 所述透光性塑料包括有机硅微球、 PMM A微球、 PP微球、 PMMA塑料颗粒、 PP塑料颗粒或 PE塑料颗粒的一 种或一种以上的混合物;
在双螺杆造粒机制造光学母粒的过程中加入 0.001-0.05份润滑分散剂
其中, 双螺杆造粒机按造粒过程区分为进料区间、 熔融区间、 混炼区 间、 出料区间, 双螺杆造粒机各区间的温度为 170度至 270度, 压力为 IMPa至 4.5MPa, 制成的母粒具有不同的折射系数, 让其不同折射率 的化学聚合物分散均匀, 而使 LED点光源通过该扩散板有多折射率发 射出均匀的面光源;
挤出成型步骤, 按重量比选取 100份本料, 选取 1〜10份制作光学母粒 步骤制造出来的光学母粒, 搅拌混合均匀后投入到挤出成型机中, 通 过挤出成型机成型出扩散板板材; 其中, 挤出成型机按成型过程区分 为进料区间、 熔融区间、 混炼区间、 出料区间, 挤出成型机各区间的 温度为 170度至 270度, 压力为 IMPa至 4.5MPa;
消除应力步骤, 在挤出设备后设备加热设备, 对扩散板板材进行加热 , 消除扩散板板材的应力;
裁切步骤, 将扩散板板材裁切成经济尺寸的扩散板;
成品。
[权利要求 2] 根据权利要求 1所述的显示屏背光源及 LED平板灯的 PS扩散板生产方 法, 其特征在于:
准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料; 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成, 从 100份本料中选取出来的 60份本料,
40份有机硅微球、 PMMA微球或 PP微球中的一种; 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 10
0份的光学母粒;
在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分 散剂。
[权利要求 3] 根据权利要求 1所述的显示屏背光源及 LED平板灯的 PS扩散板生产方 法, 其特征在于:
准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料; 制作光学母粒步骤, 光学母粒由以下两种重量比的组份混合组成, 从 100份本料中选取出来的 80份本料,
20份有机硅微球、 PMMA微球或 PP微球中的一种; 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 10
0份的光学母粒;
在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分 散剂。
[权利要求 4] 根据权利要求 1所述的显示屏背光源及 LED平板灯的 PS扩散板生产方 法, 其特征在于:
准备本料步骤, 按重量比选用 100份 PS塑料颗粒作为本料; 制作光学母粒步骤, 光学母粒由以下三种重量比的组份混合组成, 从 100份本料中选取出来的 60份本料,
20份 PP塑料颗粒或 PE塑料颗粒中的一种,
20份有机硅微球、 PMMA微球或 PP微球中的一种, 均匀搅拌混合后投入双螺杆造粒机制造光学母粒, 制成总重量比为 10
0份的光学母粒; 在双螺杆造粒机制造光学母粒的过程中至少加入 0.001〜0.05份润滑分 散剂。
PCT/CN2015/079160 2014-05-22 2015-05-18 显示屏背光源及led平板灯的ps扩散板生产方法 WO2015176629A1 (zh)

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