WO2004064452A1 - Cable electroluminescent et procede de fabrication associe - Google Patents

Cable electroluminescent et procede de fabrication associe Download PDF

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Publication number
WO2004064452A1
WO2004064452A1 PCT/CN2003/000447 CN0300447W WO2004064452A1 WO 2004064452 A1 WO2004064452 A1 WO 2004064452A1 CN 0300447 W CN0300447 W CN 0300447W WO 2004064452 A1 WO2004064452 A1 WO 2004064452A1
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WIPO (PCT)
Prior art keywords
light
layer
emitting
electrode
wall
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PCT/CN2003/000447
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English (en)
French (fr)
Inventor
Zhengkai Yin
Zumi Lu
Original Assignee
Zhengkai Yin
Zumi Lu
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Application filed by Zhengkai Yin, Zumi Lu filed Critical Zhengkai Yin
Priority to AU2003246129A priority Critical patent/AU2003246129A1/en
Priority to EP03737850A priority patent/EP1597942A4/en
Publication of WO2004064452A1 publication Critical patent/WO2004064452A1/zh

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
    • H05B33/145—Arrangements of the electroluminescent material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/10—Apparatus or processes specially adapted to the manufacture of electroluminescent light sources

Definitions

  • the invention relates to the field of electroluminescent powder light source.
  • it relates to a flexible linear or tubular luminous body and its production process.
  • the structure and production process of the existing electroluminescent powder luminous wire are coated with an electric insulating medium on the outer wall of the axial circumference of the metal conductive wire, and then the outer wall of this insulating medium layer is coated with luminescent powder and adhesive.
  • a mixture of cementing agent, and then a layer of metal transparent electrode is sputtered on the outer wall of the mixed layer of luminescent powder and binder. Because the binder in the mixed layer of luminescent powder and binder volatilizes, air-filled pores will be left. These pores reduce the field capacitance of the light source and form tiny black spots, thereby reducing the brightness of the light-emitting lines. In order to fill these pores, a transparent filling liquid is generally used.
  • the transparent electrode layer penetrates and fills the pores.
  • the transparent electrode is also used.
  • the outer wall of the layer is coated with a transparent barrier layer of silicone oil. Because the structure and manufacturing process of the luminous wire are very complicated, it is difficult to guarantee the permeation quality of the filling liquid and the blocking effect of the barrier layer. Such a luminous wire is not only costly and expensive to produce, but also the luminous quality and effect are difficult to guarantee.
  • the purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and to provide a light-emitting wire with a simple and practical structure, low cost, and stable and reliable light quality under the same light-emitting materials and conditions.
  • the invention further provides an electroluminescent wire made of non-metallic wires, which is softer, more tensile, and has a wider range of applications than existing light wires made of metal wires. Pan.
  • the invention further provides a light-emitting tube made of a metal or non-metallic hose.
  • the light-emitting tube is light, flexible, has a large light-emitting area, and has a low cost. .
  • the specific solution of the product of the invention is that at least one metal or non-metallic wire is used as the linear central electrode of the electroluminescence line electric field, and a light-emitting layer composed of a mixture of a light-emitting powder and a transparent thermoplastic polymer or a synthetic resin is directly surrounded and coated. Apply or squeeze the outer wall of the linear central electrode, and then coat the light-transmitting electrode layer uniformly around the outer wall of the linear light-emitting layer. Outside the light-transmitting electrode layer, wrap the auxiliary electrode and wrap a transparent polymer on the outermost layer.
  • Floor any metal or non-metallic wire is used as the linear central electrode of the electroluminescence line electric field, and a light-emitting layer composed of a mixture of a light-emitting powder and a transparent thermoplastic polymer or a synthetic resin is directly surrounded and coated. Apply or squeeze the outer wall of the linear central electrode, and then coat the light-transmitting electrode layer uniformly around the outer wall of the linear light-e
  • the transparent thermoplastic polymer or synthetic resin material has good insulation and dielectric properties.
  • the outer layer of the luminescent powder particles forms an insulating dielectric coating.
  • the luminescent layer composed of the mixture can be directly coated or coated.
  • an insulating dielectric coating composed of an inorganic material barium titanate powder can be omitted, thereby eliminating a manufacturing process and reducing the product cost.
  • the manufacturing process of the present invention is mainly a coating process of a light-emitting layer, which is divided into two types according to the functional polymer materials mixed with the light-emitting powder: 1) When the light-emitting powder and an insulating dielectric transparent synthetic resin, such as a silicone resin or When the light-emitting layer is composed of a mixture of polyurethane and epoxy resin, the light-emitting layer needs to be subjected to multiple extrusion coatings of a coating slurry composed of a mixture of luminescent powder and a synthetic resin with different concentrations and a corresponding compounding agent more than once, that is, the above. The concentration of the luminescent powder in the coating slurry decreases successively with the number of coatings.
  • the thickness of the above coating is about 10um each time.
  • the luminescent powder of the last coating layer can be squeezed and filled into the concave gap formed on the surface of the previous coating layer.
  • the luminescent powder in the luminescent layer is densely arranged after more than one extrusion coating. , The remaining few pores are processed by thermosetting and light curing processes.
  • the polymer polyester resin or silicone resin is filled with the crosslinked material; 2) When the light emitting powder and the transparent thermoplastic polymer are mixed to form a light emitting layer, the transparent insulating dielectric thermoplastic polymer and the light emitting powder are mixed and granulated, and then It is directly extruded on the lead of the center electrode through a plastic extruder with a thickness of about 40um.
  • the light-emitting layer made of the above two mixed materials and processes has insulation and dielectric properties, and its surface can form a flat, bright, insulating, Dielectric films, capacitors, and brightness are greatly improved.
  • the invention further provides a new structure and a new process for expanding the linear light emitting area of the light emitting area.
  • To increase the light emitting area of the linear light emitting body it is generally necessary to increase the diameter of the solid linear center electrode, but the diameter of the solid linear center electrode is increased.
  • the flexibility of the linear light-emitting body will be reduced, and the weight will also be greatly increased.
  • the increase in the diameter of the central electrode of the linear light-emitting body is limited and limited, and is generally less than 2 mm.
  • the conductive hose can be a metal hose, a corrugated tube, a single-hook and a double-hook elastic electrical protective sleeve, a metal or non-metal conductive wire braided hose, a conductive plastic and a conductive rubber hose , Plastic metal-plated hose.
  • a light-emitting layer composed of a mixture of a luminescent powder and a transparent synthetic resin or a transparent thermoplastic polymer is coated on the outer wall surrounding the tube-shaped central electrode, and a light-transmitting electrode is coated on the outer wall around the light-emitting layer.
  • Floor A light-emitting layer composed of a mixture of a luminescent powder and a transparent synthetic resin or a transparent thermoplastic polymer is coated on the outer wall surrounding the tube-shaped central electrode, and a light-transmitting electrode is coated on the outer wall around the light-emitting layer.
  • At least one thin metal conductive wire is in contact with the light-transmitting electrode as the auxiliary electrode in the light-emitting wire and the light-transmitting electrode layer of the light-emitting tube or the entire axial length of the outer wall.
  • the auxiliary electrode is two or more metal conductive wires, Co-directional spirals or positive and negative spirals are intertwined in the light-transmitting electrode or on its outer wall.
  • the metal or non-metal conductive wire braided hose assembled into the center electrode of the light emitting tube of the invention can be wrapped in a polymer hose through a plastic extruder, and then coated on the outer wall of the polymer hose to coat the light layer by layer. Layer, transparent electrode layer.
  • the light-emitting powder of the light-emitting layer of the present invention may be composed of an inorganic light-emitting material doped with zinc sulfide and copper powder, or a high-molecular organic light-emitting material, such as polyalkylthiophene, polyparaphenylene acetylene, and polyalkylene. ⁇ and other composition.
  • the light-emitting wire and the light-emitting tube of the present invention are light and flexible, have high tensile strength, large light-emitting area, simple production process, continuous industrialized production, and can be widely used in the fields of decoration, advertising, and process weaving.
  • Fig. 1 is an axial longitudinal sectional view of a light-emitting wire core structure with a lead as a center electrode
  • Fig. 2 is an axial longitudinal cross-sectional view of a linear light-emitting body structure with a lead as a center electrode
  • Fig. 3 uses a conductive hose as a center electrode
  • Fig. 4 is an axial longitudinal sectional view of a linear luminous body with a conductive mesh tube as a center electrode
  • Fig. 5 is a line composed of a plurality of non-metallic conductive wires in parallel or stranded to form a central electrode; Axial longitudinal sectional view of a light-emitting body;
  • FIG. 6 is an enlarged view of an axial longitudinal cross-sectional structure of the center electrode after the first application of a mixture of a luminescent powder and a polyurethane resin or a silicone resin;
  • FIG. 7 is an enlarged view of an axial longitudinal cross-sectional structure of a center electrode after a mixture of a luminescent powder and a polyurethane resin or a silicone resin is applied by two or more extrusions;
  • FIG. 8 is a schematic diagram of a coating method of Embodiment 5.
  • FIG. 9 is a plan vertical sectional view of a row-shaped light emitting body;
  • Fig. 10 is a radial sectional view of a cylindrical light-emitting body.
  • the core of the light-emitting wire uses a metal wire or a non-metal wire 1 as a center electrode, and an outer wall of the center electrode is covered with a layer of light-emitting powder 6 and a transparent polymer, or polyurethane resin or silicone.
  • a light-emitting layer 2 composed of a mixture of resins 7 is surrounded on the outer peripheral wall of the light-emitting layer 2 by a light-transmitting electrode layer 3 and an auxiliary electrode 4 wound thereon.
  • a transparent polymer layer 5 composed of a polymer such as transparent plastic PVC or EVA is wrapped on the outermost layer to form a linear light-emitting body.
  • a metal or non-metal conductive hose 8 may also be used as a center electrode.
  • auxiliary electrodes 4 are spirally wound on an axial circumferential outer wall of the light-transmitting electrode layer 3 of the linear light-emitting body, and the two auxiliary electrodes 4 are Crosswise spiral winding.
  • the use of this auxiliary electrode winding method has the effect that when one auxiliary electrode 4 is damaged and broken, the cross electrode can ensure that the entire auxiliary electrode continues to maintain a good conduction state.
  • the conductive hose as the center electrode is a conductive mesh tube braided with a metal wire or a non-metallic conductive wire 10, and the outer layer of the knitted conductive mesh tube can directly cover the light-emitting layer 2 and the light-transmitting electrode layer 3 successively.
  • the braided mesh tube 10 can also be passed through a plastic extruder, and the conductive braided tube 10 is covered with a polymer 11 to form a polymer braided hose, and the light-emitting layer 2 is coated layer by layer on the outer circumferential axis of the tube.
  • the center electrode is composed of a plurality of non-metallic conductive wires 12 in parallel or twisted.
  • the non-metallic conductive wires 12 are bonded to each other by conductive glue 13 to increase the conductive performance of the center electrode.
  • the auxiliary electrode 4 is wound and covered with a transparent polymer layer 5 to form a non-metallic center electrode light-emitting wire.
  • step 2) See step 1)
  • the granules formed enter the plastic extruder, heated to 140-175 degrees Celsius, plasticized and extruded uniformly on the outer wall of the center electrode by the extruder die head, with a thickness of about 40um. Cold to form a smooth and dense light-emitting layer 2;
  • the outermost layer is covered with a transparent polymer layer composed of a transparent plastic such as PVC or EVA.
  • step 1) of the above production method a transparent polyethylene terephthalate, polystyrene, polypropylene, polysulfone, or polycarbonate is used instead of transparent polyvinyl chloride, and the same effect can be obtained according to the above process.
  • Layer 2 a transparent polyethylene terephthalate, polystyrene, polypropylene, polysulfone, or polycarbonate is used instead of transparent polyvinyl chloride, and the same effect can be obtained according to the above process.
  • Layer 2 a transparent polyethylene terephthalate, polystyrene, polypropylene, polysulfone, or polycarbonate is used instead of transparent polyvinyl chloride, and the same effect can be obtained according to the above process.
  • the light-emitting layer is formed by mixing a luminescent powder material with a synthetic resin material.
  • the luminescent powder is mixed with a transparent, insulating, dielectric polyurethane or silicone resin with a viscosity of 10-150PaS in a proportion of 45-70%: 55-30% by weight.
  • appropriate compounding agents such as curing agent, plasticizer, antioxidant, diluent, etc.
  • the luminescent powder mixture slurry in which the concentration ratio of the luminescent powder is sequentially reduced is respectively placed in several applicators and continuously stirred.
  • the particle size of the luminescent powder particles in each applicator is also different. fine.
  • FIG. 6 is an enlarged view of an axial longitudinal cross-sectional structure of a layer composed of a mixture of a luminescent powder 6 and a polyurethane resin or a silicone resin 7 on the outer peripheral wall of the center electrode 1.
  • the luminescent powder particles 6 are loosely arranged, and the outer wall is rough.
  • Fig. 7 is an enlarged view of an axial longitudinal cross-sectional structure of a mixture of the luminescent powder and the above-mentioned resin 7 after two or more extrusion coatings.
  • the luminescent powder particles 6 are closely arranged, and the outer wall is round and smooth.
  • the gap between the light-emitting powders is filled with a transparent, insulating, dielectric crosslinked material after the resin is cured;
  • the outer wall of the light-emitting layer 2 is coated or covered with a light-transmitting electrode 3 around the outer wall, and the auxiliary electrode 4 is spirally wound around the outer wall of the light-transmitting electrode layer 3;
  • the outermost layer is covered with transparent plastic consisting of transparent plastic such as PVC or EVA ⁇ ⁇ 5 ⁇ Layer 5.
  • the synthetic resin material described in step 2) may also be epoxy resin or acrylic resin, or polyamide-imide resin, or polyester resin. Using these synthetic resins and adding a compounding agent, the same effect can be obtained according to the above process. ⁇ luminescent layer 2.
  • the capacitance and light energy loss are greatly reduced, and a good light-emitting effect is achieved.
  • FIG. 9 it is a schematic structural diagram of a light emitting body.
  • the light emitting body includes a plurality of light emitting wire cores 16 having the structure shown in FIG.
  • FIG. 10 it is a schematic structural diagram of another light emitting body.
  • the light-emitting body is a light-emitting body composed of a plurality of light-emitting wire cores 16 having a structure shown in FIG. 1. Its radial cross section is like a cross section. It has a through hole 15 in the center. Several through holes 14 and light emitting cores 16 are evenly arranged on the circumference.
  • the structure of the tubular light emitting body can save the weight of the polymer material and the whole light emitting tube.

Description

电致发光管发光线及其生产方法
本发明所属的技术领域
本发明涉及电致发光粉发光光源领域。尤其涉及一种柔性线状或管状 发光体及其生产工艺。
在本发明之前的现有技术
现有的电致发光粉发光线的结构及生产工艺， 是在金属导电线轴向圆 周的外壁， 涂敷一层电绝缘介质， 再在这层绝缘介质层的外壁， 涂敷发光 粉和粘结剂的混合物，然后再在发光粉和粘结剂混合层外壁溅射一层金属 透明电极， 由于发光粉和粘结剂混合层中的粘结剂部分挥发后会留下充满 空气的孔隙， 这些孔隙会减小光源的场致电容和形成微小的黑点， 从而降 低发光线的亮度。 为了填充这些孔隙， 一般采用一种透明填充液， 在特种 装置里， 透过透明电极层， 渗透并填充到孔隙中去， 为了防止填充液从孔 隙中再渗透或挥发出来， 还要在透明电极层的外壁上， 再涂敷一层硅油类 的透明阻挡层。 由于该发光线结构和制作工艺十分复杂， 填充液的渗透质 量和阻挡层的阻挡效果难以保证， 这种发光线不仅成本高， 造价昂贵， 而 且发光质量和效果也难以保证。
发明目的
本发明的目的就是要克服现有技术存在的上述缺陷，在同等发光材料 和条件下， 提供一种结构和生产制作工艺简单实用， 成本低、 发光质量稳 定可靠的发光线。
本发明进一步提供了一种釆用非金属导线制作的电致发光线， 该发光 线相比现有的金属导线制作的发光线， 更加柔软、抗拉、 应用范围也更广 泛。
本发明还进一步提供了一种金属或非金属软管制作的发光管， 本发光 管相比现有的由数根发光线并列组成的圆柱状发光体， 轻便、柔软、 发光 面积大、 成本低。
本发明采用的技术方案
本发明产品的具体方案是由至少一根金属或非金属导线作为场致发 光线电场的线形中心电极， 由发光粉和透明热塑性高分子聚合物、或合成 树脂的混合物组成的发光层直接环绕涂敷或挤压在线形中心电极的外壁， 再在线形发光层的外壁上， 均匀环绕涂敷透光电极层， 在透光电极层外， 缠绕辅助电极， 并在最外层包裹一透明聚合物层。
透明热塑性聚合物或合成树脂材料具有良好的绝缘和介电性能，用其 混合发光粉后， 使发光粉颗粒的外层形成绝缘介质包膜， 该混合物组成的 发光层， 可直接包覆或涂敷在中心电极上， 其间可省去由无机材料钛酸钡 粉组成的绝缘介质涂层， 从而也省去了一道制作工序， 降低了产品成本。
本发明的制作工艺， 主要是发光层的涂敷工艺， 以混合发光粉的功能 高分子材料不同而分为两种： 1 ) 当发光粉和绝缘介电的透明合成树脂， 如有机硅树脂或聚氨酯、环氧树脂混合物组成发光层时， 该发光层需要经 一次以上的用不同浓度的发光粉与合成树脂混合物及相应的配合剂组成 的涂敷浆料的多次挤压涂敷， 即上述涂敷浆料中的发光粉的浓度随涂敷的 次数逐次降低。 上述涂敷每次涂敷厚度 lOum左右， 后一次涂敷层的发光 粉能挤压填充进上一次涂层表面形成的凹形缝隙中，一次以上挤压涂敷后 发光层里发光粉致密排列，剩余很少的孔隙又被热固和光固工艺处理后的 高分子聚酯树脂或有机硅树脂的交联物填满； 2) 当发光粉和透明热塑性 高分子聚合物混合组成发光层时，透明绝缘介电的热塑性聚合物与发光粉 混合造粒， 然后通过塑料挤塑机， 直接挤敷在中心电极的导线上， 厚度 40um左右； 以上两种混合材料和工艺制作的发光层， 均具有绝缘介电性 能， 其表面能形成一平整、 光亮、 绝缘、 介电的膜、 电容和光亮度大幅提 高。
本发明进一步提供了一种扩大发光面积的线形发光体的新结构和新 工艺， 要扩大线形发光体的发光面积， 一般需要加大实心线形中心电极的 直径， 但实心线形中心电极直径加大， 线形发光体的柔软性就会下降， 重 量也会大幅增加， 线形发光体中心电极的直径增加是受限制的， 也是有限 度的， 一般在 2mm以下。 将实心线形中心电极改为空心线形中心电极， 即以金属或非金属导电软管作线形发光体的中心电极，就能制作出发光面 积成倍提高、 轻便柔软的管形发光体。
为提高管形发光体的柔软性， 导电软管可采用金属软管、 波纹管、 单 勾和双勾弹性电气护套管、金属或非金属导电丝线编织软管、 导电塑料和 导电橡胶软管、 塑料镀金属膜软管。
在管形中心电极周围的外壁，环绕挤压涂敷由发光粉和透明合成树脂 或包覆透明热塑性高分子聚合物的混合物组成的发光层，在发光层周围的 外壁， 环绕涂敷透光电极层。
在发光线和发光管透光电极层之中或外壁的轴向全长上， 至少有一根 细金属导电线作为辅助电极与透光电极接触，当辅助电极为两根以上金属 导电线时， 可同向螺旋或正反螺旋交叉缠绕在透光电极之中或其外壁上。 组成本发明发光管的中心电极的金属或非金属导电丝线编织软管，可通过 塑料挤塑机， 包覆在聚合物软管中， 在聚合物软管外壁上， 再逐层环绕涂 敷发光层、 透光电极层。
组成本发明的发光层的发光粉可由无机物发光材料硫化锌和铜粉掺 杂组成， 也可由发光亮度更高的高分子有机发光材料， 如聚烷基噻吩、聚 对苯乙炔、 聚烷基芴等组成。
本发明的发光线， 发光管， 轻便柔软， 抗拉强度高， 发光面积大， 其 生产工艺简单， 可进行连续工业化生产， 可广泛应用于装饰、 广告、 和工 艺编织等领域。
附图说明
图 1是以导线为中心电极的发光线芯体结构的轴向纵剖视图； 图 2是以导线为中心电极的线状发光体结构的轴向纵剖视图； 图 3是以导电软管为中心电极的线状发光体的轴向纵剖视图； 图 4是以导电网管为中心电极的线状发光体的轴向纵剖视图； 图 5是以数根非金属导电线平行或绞合组成中心电极的线状发光体的 轴向纵剖视图；
图 6是中心电极涂敷第一次由发光粉与聚氨酯树脂或有机硅树脂的混 合物后轴向纵剖视面结构的放大图；
图 7是中心电极通过二次或二次以上挤压涂敷发光粉与聚氨酯树脂或 有机硅树脂的混合物后的轴向纵剖面结构的放大图；
图 8是实施例 5的涂敷方式示意图；
图 9是排状发光体的平面纵剖视图； 图 10是圆柱状发光体的径向剖面图。
实施例 1
如图 1所示， 所述的发光线芯体以金属导线或非金属导线 1作为中心 电极， 在中心电极的外壁环绕覆盖一层发光粉 6和透明高分子聚合物， 或 聚氨酯树脂或有机硅树脂 7混合物组成的发光层 2， 在发光层 2的圆周外 壁上， 环绕覆盖一层透光电极层 3和在其上的缠绕的辅助电极 4。 如图 2 所示， 在图 1所示发光线芯体的基础上， 在最外层包裹透明塑料 PVC或 EVA等聚合物组成的透明聚合物层 5， 形成线状发光体。
除以金属导线或非金属导线 1作为中心电极外， 还可以如图 3所示， 以金属或非金属导电软管 8作为中心'电极。
如图 1所示， 本实施例所述的辅助电极的缠绕结构中， 包括至少两根 辅助电极 4螺旋缠绕在线形发光体透光电极层 3的轴向圆周外壁上，两根 辅助电极 4呈正反交叉螺旋缠绕。采用这种辅助电极的缠绕方式， 具有当 一根辅助电极 4受损折断，交叉电极可以确保整个辅助电极继续保持良好 导通状态的效果。
实施例 2
如图 4所示， 作为中心电极的导电软管， 为金属丝线或非金属导电丝 线 10编织的导电网管， 该编织导电网管的外层可直接逐次包覆发光层 2, 透光电极层 3，组成发光管，也可以将编织网管 10通过塑料挤塑机， 用聚 合物 11覆盖导电编织管 10， 形成聚合物编织软管， 在该管轴向圆周外壁 再逐层包覆发光层 2， 透光电极层 3， 辅助电极 4、 透明聚合物层 5。
实施例 3 如图 5所示， 其中心电极由数根非金属导电线 12平行或绞合组成。 非金属导电线 12之间由导电胶 13相互粘结增加中心电极的导电性能，数 根非金属导电线 12组成的中心电极的外层逐层次涂敷发光层 2，透光电极 层 3，缠绕辅助电极 4，包覆透明聚合物层 5，组成非金属中心电极发光线。 实施例 4
实施例 1所述的线状发光体的生产工艺如下：
1 ) 将粒度小于 20um硫化锌和铜粉掺杂后组成发光粉材料， 将组 成的发光粉材料 6与透明聚氯乙烯 7按重量 50— 65%: 50—35% 的比例混合造粒
2) 见步骤 1 ) 所形成的颗粒进入塑料挤出机， 加热至 140— 175 摄氏度塑化后经挤出机模头均匀挤敷在中心电极外壁上，厚度 约为 40um左右， 经水冷或风冷， 形成表面光滑致密的发光层 2；
3 ) 在发光层 2的圆周的外壁环绕涂敷或覆盖一层透光电极 3， 在 透光电极层 3的外壁螺旋缠绕辅助电极 4;
4) 在最外层覆盖有透明塑料 PVC或 EVA等聚合物组成的透明聚 合物层 5。
上述生产方法的步骤 1 )中， 以透明聚乙烯对苯二甲酸酯、聚苯乙烯、 聚丙烯、聚砜或聚碳酸酯取代透明聚氯乙烯， 按上述工艺也能得到相同的 效果的发光层 2。
实施例 5
实施例 1所述的线状发光体的另外一种生产工艺， 具体步骤如下： 1 ) 以发光粉材料与合成树脂材料混合组成发光层， 如以发光粉与粘 度 10— 150PaS透明、绝缘、介电的聚氨酯或有机硅树脂按重量 45— 70%: 55— 30%的比例混合， 并加入适当配合剂， 如固化剂、 增塑剂、 防老剂、 稀释剂等， 组成发光粉混合浆料。将发光粉浓度比例依次降低的发光粉混 合物浆料， 分别放入数个涂敷器内， 不断搅拌， 每个涂敷器内的发光粉颗 粒的粒度也不相同， 其次序也是依次从粗到细。
2)如图 8所示， 让作为中心电极的导线 1或导电管 8向右高速通过 盛有发光粉与树脂混合物浆料的涂敷器的模口 17时， 中心电极的外壁与 模口 17之间窄小缝隙 18， 自然形成负压， 使容器内的发光粉与合成 « 旨 混合物浆料向膜口方向流动，发光粉与聚氨酯或有机硅树脂混合物 2均匀 挤压涂敷在中心电极 1或 8的外壁上形成发光层 2。 烘干后， 进入下一个 涂敷器进行涂敷， 每次涂敷厚度为 lOum左右， 最后形成光滑的发光层。 具体过程如图 6、 7示。 其中图 6是在中心电极 1圆周外壁上， 涂敷一层 由发光粉 6和以聚氨酯树脂或有机硅树脂 7的混合物后轴向纵剖视面结构 的放大图。 图中发光粉颗粒 6排列松散， 外壁凸凹粗糙。 图 7是发光粉和 以上述树脂 7的混合物，通过二次或二次以上挤压涂敷后的轴向纵剖面结 构的放大图。 图中发光粉颗粒 6排列紧密， 外壁圆润光滑，
3 )在 120— 155摄氏度烘箱里经过 60— 300秒烘干后， 发光粉之间 的间隙被树脂固化后的透明、 绝缘、 介电的交联物填充；
4)在发光层 2的圆周的外壁环绕涂敷或覆盖一层透光电极 3， 在透 光电极层 3的外壁螺旋缠绕辅助电极 4;
5 )在最外层覆盖有透明塑料 PVC或 EVA等聚合物组成的透明 *合 物层 5。
步骤 2)中所述的合成树脂材料还可以是环氧树脂或丙烯酸树脂、或 聚酰胺酰亚胺树脂， 或聚酯树脂， 采用这些合成树脂， 并添加配合剂按上 述工艺也能得到相同效果的发光层 2。 这种结构的发光层在中心电极 1和 透光电极 3之间的交变电场中， 电容和光能损失大幅减少， 达到良好的发 光效果。 如图 9所示， 为发光体的结构示意图， 该发光体由图 1所示结构的数 根发光线芯体 16并排通过挤塑机、 生产的排线状发光体。 如图 10所示， 为另外一种发光体的结构示意图。 该发光体由图 1所 示结构的数根发光线芯体 16组成的发光体。 其径向断面如同藕断面， 其 中心有一通孔 15, 圆周上均匀布置数个通孔 14和发光线芯体 16， 该结构 管状发光体， 可省聚合物材料和整条发光管的重量。

Claims

权刺 要 求
1、 一种电致发光线芯体， 包括柔性中心电极、 发光层、 透光导电层， 其特征在于： 中心电极（1 )的外壁直接依次包覆发光层（2)、透光 导电层（3); 发光层里的发光粉颗粒 (6) 由透明、 绝缘、 介电的热 塑性高分子聚合物或合成树脂（7)包裹； 透光导电层外壁缠绕辅助 电极（4)。
2、 按权利要求 1所述的电致发光线芯体， 其特征在于： 所述的透明、 绝缘、 介电的热塑性高分子聚合物是聚氯乙烯、 聚乙烯对苯二甲酸 酯、 聚丙烯、 聚苯乙稀、聚碳酸酯、 聚砜； 所述的合成树脂是透明、 绝缘、 介电的有机硅树脂聚氨酯、 聚酯树脂、 丙烯酸树脂或环氧树 脂。
3、 按权利要求 1所述的电致发光线芯体， 其特征在于： 发光层里的发 光粉为铜粉掺杂的硫化锌或有机物聚对苯乙炔、 聚烷基噻吩、 聚烷 基荷。
4、 按权利要求 1所述的电致发光线芯体， 其特征在于： 中心电极为单 根非金属导电线、 或用导电胶粘接胶合的多根非金属导电线、 或金 属或非金属导电软管、 或网管。
5、 按权利要求 1所述的电致发光线芯体， 其特征在于： 透光导电层外 壁， 至少有两根细导电线 (4)作为辅助电极正反螺旋交叉缠绕。
6、 一种权利要求 1所述的发光线芯体的制作工艺， 包括以下步骤：
1 ) 将发光粉材料与透明、绝缘、介电的热塑性高分子聚合物混合造 粒； 2) 将步骤 1 ) 所形成的颗粒进入塑料挤出机， 加热至 140— 175摄 氏度塑化后经挤出机模头均匀挤敷在中心电极外壁上，经水冷或 风冷， 形成表面光滑的发光层 （2);
3 ) 在发光层（2)的圆周的外壁环绕涂敷或覆盖一层透光电极（3)， 并在透光电极层 （3 ) 的外壁螺旋缠绕辅助电极 （4)。
、 一种权利要求 1所述的发光线芯体的制作工艺， 包括以下步骤：
1 ) 将发光粉材料与合成树脂材料混合的液体浆料，放入两个或两个 以上涂敷器内， 不断搅拌， 上述的涂敷器中的发光粉浓度依次降 低；
2) 让作为中心电极的导线 (1)或导电管 (8)高速通过盛有发光粉与合 成树脂混合物浆料的涂敷器的模口 (17)， 进行挤压涂敷， 烘干， 并进入下一个涂敷器进行挤压涂敷；
3 ) 在 120— 155摄氏度烘箱里烘干后；
4) 在发光层 (2)的圆周的外壁环绕涂敷或覆盖一层透光电极 (3)， 并 在透光电极层 (3)的外壁螺旋缠绕辅助电极 (4)。
、 一种线状发光体， 其特征在于： 由权利要求 1所述的线状发光线芯 体外包覆一层透明聚合物层 (5)形成。
、 一种排状发光体， 其特征在于： 由权利要求 1所述的两根以上的发 光线芯体并排并包覆一层透明聚合物形成。
0、 一种藕棒状发光体， 其特征在于： 由权利要求 1所述的两根以上的 发光线芯体环形包覆一层透明聚合物而形成。
PCT/CN2003/000447 2003-01-09 2003-06-09 Cable electroluminescent et procede de fabrication associe WO2004064452A1 (fr)

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