JP2012049034A - Inorganic el light-emitting element, resin molded article, transfer sheet, manufacturing method of transfer sheet, and manufacturing method of resin molded article - Google Patents
Inorganic el light-emitting element, resin molded article, transfer sheet, manufacturing method of transfer sheet, and manufacturing method of resin molded article Download PDFInfo
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- Electroluminescent Light Sources (AREA)
Abstract
Description
本発明は、無機エレクトロルミネッセンス（ＥＬ）発光素子に係り、特に全印刷技術で形成可能な無機ＥＬ発光素子、この無機ＥＬ発光素子を埋め込んだ樹脂成形品、この樹脂成形品を製造するための転写シート、更には、この転写シートの製造方法、及び樹脂成形品の製造方法に関する。 The present invention relates to an inorganic electroluminescence (EL) light emitting device, and more particularly, an inorganic EL light emitting device that can be formed by all printing techniques, a resin molded product in which the inorganic EL light emitting device is embedded, and a transfer for producing the resin molded product. The present invention also relates to a method for producing the transfer sheet and a method for producing a resin molded product.
近年、無機ＥＬ発光素子を印刷技術によって製造することが進展している。無機ＥＬ発光素子は、発光体としての無機蛍光体の背面に誘電体層を設け、無機蛍光体の前面に設けた透明電極（透明導電膜）と、誘電体層の背面に設けた背面電極の間に電圧を印加して、無機蛍光体を発光させている。しかしながら、従来の印刷技術による無機ＥＬ発光素子は透明電極として酸化インジウム（Ｉｎ2Ｏ3）に数％の酸化錫（ＳｎＯ2）を添加した酸化インジウム錫（ＩＴＯ）膜を用い、このＩＴＯ膜の上に無機蛍光体を印刷して製造されている。このＩＴＯ膜は応力変形に弱く、熱的に不安定であるので、従来の無機ＥＬ発光素子は熱や圧力が印加される環境での使用に適さない。このため、従来の無機ＥＬ発光素子を、製造工程の途中に熱や圧力が印加される樹脂成形品の中に埋め込むことや、曲がった部材の一部の発光部として用いることは困難である。 In recent years, the production of inorganic EL light-emitting elements by printing technology has progressed. An inorganic EL light emitting device includes a dielectric layer provided on the back surface of an inorganic phosphor as a light emitter, a transparent electrode (transparent conductive film) provided on the front surface of the inorganic phosphor, and a back electrode provided on the back surface of the dielectric layer. A voltage is applied between them to cause the inorganic phosphor to emit light. However, an inorganic EL light emitting device based on a conventional printing technique uses an indium tin oxide (ITO) film in which several percent of tin oxide (SnO 2 ) is added to indium oxide (In 2 O 3 ) as a transparent electrode. It is manufactured by printing an inorganic phosphor on top. Since this ITO film is vulnerable to stress deformation and is thermally unstable, conventional inorganic EL light-emitting elements are not suitable for use in an environment where heat or pressure is applied. For this reason, it is difficult to embed a conventional inorganic EL light-emitting element in a resin molded product to which heat or pressure is applied during the manufacturing process, or to use the light-emitting part as a part of a bent member.
又、無機ＥＬ発光素子に用いる無機蛍光体としては、種々の材料が知られてはいるが、それぞれその材料に固有の色の波長の光のみを発光させているので、無機ＥＬ発光素子を用いて多色の画像を表示するためには、発光層を複数用意する構造（特許文献１参照。）やＥＬディスプレイパネルのように、微細な画素をマトリクス状に配列する複雑な構造が必要となり、高価な製品とならざるを得ない問題がある。 In addition, various materials are known as inorganic phosphors used in the inorganic EL light-emitting device, but each material emits only light having a wavelength of a color unique to the material. Therefore, an inorganic EL light-emitting device is used. In order to display a multicolor image, a complicated structure in which fine pixels are arranged in a matrix like a structure in which a plurality of light emitting layers are prepared (see Patent Document 1) and an EL display panel is required. There is a problem that must be an expensive product.
そこで、本発明は、熱や圧力が印加される環境や、曲がった部材の一部の発光部として用いることが可能で、且つ構造が簡単で安価に画像が表示できる無機ＥＬ発光素子、この無機ＥＬ発光素子を埋め込んだ樹脂成形品、この樹脂成形品を製造するための転写シート、更には、この転写シートの製造方法、及び樹脂成形品の製造方法を提供することにある。 In view of this, the present invention provides an inorganic EL light-emitting element that can be used as an environment to which heat or pressure is applied or a light-emitting portion of a part of a bent member, and has a simple structure and can display an image at low cost. An object of the present invention is to provide a resin molded product in which an EL light emitting element is embedded, a transfer sheet for manufacturing the resin molded product, a method for manufacturing the transfer sheet, and a method for manufacturing the resin molded product.
上記目的を達成するために、本発明の第１の態様は、(a)複数の色層により表示パターンを形成した色印刷層と、(b)この色印刷層を透過する光を出射し、複数の色層により表示パターンの画像を表示させる無機蛍光体層と、(c)光を出射させるために、無機蛍光体層を発光させる電界を、無機蛍光体層に印加する電界印加手段とを備える無機ＥＬ発光素子であることを要旨とする。 In order to achieve the above object, according to a first aspect of the present invention, (a) a color print layer in which a display pattern is formed by a plurality of color layers; and (b) light that passes through the color print layer is emitted. An inorganic phosphor layer for displaying an image of a display pattern by a plurality of color layers; and (c) an electric field applying means for applying an electric field for causing the inorganic phosphor layer to emit light in order to emit light to the inorganic phosphor layer. The gist of the invention is that it is an inorganic EL light emitting device.
本発明の第２の態様は、(a)複数の色層により表示パターンを形成した色印刷層、この色印刷層を透過する光を出射し、複数の色層により表示パターンの画像を表示させる無機蛍光体層、光を出射させるために、無機蛍光体層を発光させる電界を、無機蛍光体層に印加する電界印加手段とを有する発光体部と、(b)画像を表示させるように、発光体部を埋め込む樹脂成形部とを備える樹脂成形品であることを要旨とする。 In the second aspect of the present invention, (a) a color print layer in which a display pattern is formed by a plurality of color layers, light that passes through the color print layer is emitted, and an image of the display pattern is displayed by the plurality of color layers. In order to display the inorganic phosphor layer, an electric field that emits light to the inorganic phosphor layer to emit light, an electric field applying unit that applies an electric field applying means to the inorganic phosphor layer, and (b) to display an image. The gist of the present invention is a resin molded product including a resin molded portion in which the light emitter is embedded.
本発明の第３の態様は、(a)基板と、(b)この基板の上に設けられた剥離層と、(c)この剥離層の上部の一部に設けられ、複数の色層を含む色印刷層と、(d)基板の上方に設けられ、色印刷層を透過する光を出射し、複数の色層により画像を表示させる無機蛍光体層と、(e)基板の上方に設けられ、光を出射させるために、無機蛍光体層を発光させる電界を、無機蛍光体層に印加する電界印加手段とを備える転写シートであることを要旨とする。 A third aspect of the present invention includes (a) a substrate, (b) a release layer provided on the substrate, and (c) a plurality of color layers provided on a part of the upper portion of the release layer. A color printing layer including: (d) an inorganic phosphor layer that is provided above the substrate, emits light that passes through the color printing layer, and displays an image by a plurality of color layers; and (e) is provided above the substrate. In order to emit light, the gist of the present invention is a transfer sheet including an electric field applying means for applying an electric field for causing the inorganic phosphor layer to emit light to the inorganic phosphor layer.
本発明の第４の態様は、(a)基板の上に剥離層を形成する工程と、(b)剥離層の上部の一部に、複数の色層を含む色印刷層を形成する工程と、(c)色印刷層の上方に、色印刷層を透過する光を出射し、複数の色層により画像を表示させる無機蛍光体層、及び光を出射させるために、無機蛍光体層を発光させる電界を、無機蛍光体層に印加する電界印加手段を形成する工程とを含む転写シートの製造方法であることを要旨とする。 The fourth aspect of the present invention includes: (a) a step of forming a release layer on a substrate; (b) a step of forming a color print layer including a plurality of color layers on a part of the upper portion of the release layer; (C) The inorganic phosphor layer that emits light that passes through the color print layer above the color print layer and displays an image by a plurality of color layers; and the inorganic phosphor layer that emits light to emit light The present invention is summarized as a transfer sheet manufacturing method including a step of forming electric field applying means for applying an electric field to be applied to the inorganic phosphor layer.
本発明の第５の態様は、(a)基板の上に剥離層を形成する工程と、剥離層の上部の一部に、複数の色層を含む色印刷層を形成する工程と、色印刷層の上方に、色印刷層を透過する光を出射し、複数の色層により画像を表示させる無機蛍光体層、及び光を出射させるために、無機蛍光体層を発光させる電界を、無機蛍光体層に印加する電界印加手段を形成する工程とを含む一連の工程で、剥離層の上部に色印刷層、無機蛍光体層及び電界印加手段を備える凸部を有する転写シートを形成する段階と、(b)凸部を成形金型の内部に導入し、成形金型を基板及び剥離層で閉じる段階と、(c)成形金型の内部に溶融した成形樹脂を導入し、成形金型と凸部との間の空隙を充填する段階と、(d)溶融した成形樹脂を冷却して固化することにより樹脂成形部を形成する段階と、(e)剥離層を介して基板と凸部とを分離し、樹脂成形部の内部に凸部を埋め込む段階とを含む樹脂成形品の製造方法であることを要旨とする。 According to a fifth aspect of the present invention, there is provided (a) a step of forming a release layer on a substrate, a step of forming a color print layer including a plurality of color layers on a part of an upper portion of the release layer, and color printing. An inorganic phosphor layer that emits light that passes through the color printing layer and displays an image by a plurality of color layers, and an electric field that causes the inorganic phosphor layer to emit light in order to emit light is formed above the layer. Forming a transfer sheet having a convex portion provided with a color printing layer, an inorganic phosphor layer, and an electric field applying unit on the upper part of the release layer in a series of steps including a step of forming an electric field applying unit to be applied to the body layer; (B) introducing the convex portion into the molding die and closing the molding die with the substrate and the release layer; and (c) introducing a molten molding resin into the molding die, Filling the gap between the convex part and (d) forming the resin molded part by cooling and solidifying the molten molded resin A method that is summarized in that a (e) through a release layer separating the substrate and the projections, the manufacturing method of the resin molded article comprising the steps of embedding the convex portion in the resin molded portion.
本発明によれば、熱や圧力が印加される環境や、曲がった部材の一部の発光部として用いることが可能で、且つ構造が簡単で安価に画像が表示できる無機ＥＬ発光素子を提供でき、更に、本発明によれば真空を使わないで全印刷法により製造できる転写シートが提供できるので、この転写シートを用いて無機ＥＬ発光素子を樹脂成形部に埋め込んだ安価な樹脂成形品、この樹脂成形品の製造方法を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the inorganic EL light emitting element which can be used as an environment to which heat and pressure are applied or a light emitting part of a part of a bent member and can display an image at a low cost with a simple structure can be provided. Furthermore, according to the present invention, a transfer sheet that can be produced by a full printing method without using a vacuum can be provided. Therefore, an inexpensive resin molded product in which an inorganic EL light emitting element is embedded in a resin molded portion using this transfer sheet, A method for producing a resin molded product can be provided.
次に、図面を参照して、第１の実施の形態を説明する。以下の図面の記載において、同一又は類似の部分には同一又は類似の符号を付している。但し、図面は模式的なものであり、厚みと平面寸法との関係、各層の厚みの比率等は現実のものとは異なることに留意すべきである。したがって、具体的な厚みや寸法は以下の説明を参酌して判断すべきものである。又、図面相互間においても互いの寸法の関係や比率が異なる部分が含まれていることは勿論である。 Next, a first embodiment will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Therefore, specific thicknesses and dimensions should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.
又、以下に示す第１の実施の形態は、本発明の技術的思想を具体化するための装置や方法を例示するものであって、本発明の技術的思想は、構成部品の材質、形状、構造、配置等を下記のものに特定するものでない。本発明の技術的思想は、特許請求の範囲に記載された技術的範囲内において、種々の変更を加えることができる。 The first embodiment shown below exemplifies an apparatus and method for embodying the technical idea of the present invention, and the technical idea of the present invention is the material and shape of the component parts. The structure, arrangement, etc. are not specified below. The technical idea of the present invention can be variously modified within the technical scope described in the claims.
（無機ＥＬ発光素子）
図１に示すように、本発明の第１の実施形態に係る無機ＥＬ発光素子は、複数の色層３１，３２，３３により表示パターンを形成した色印刷層（３１，３２，３３）と、この色印刷層（３１，３２，３３）を透過する光を出射し、複数の色層３１，３２，３３により表示パターンの画像を表示させる厚さ２５〜４５μｍ程度の無機蛍光体層１３と、色印刷層（３１，３２，３３）に向かう光を出射させるために無機蛍光体層１３を発光させるための１０6Ｖ／ｃｍ程度の電界を、無機蛍光体層１３に印加する電界印加手段（１２，１４，１５，１７）とを備える。無機蛍光体層１３としては、例えば、バリウムチオアルミネート（ＢａＡｌ２Ｓ４）等の硫化アルミニウム系蛍光体材料や、硫化亜鉛（ＺｎＳ）系蛍光体材料、或いは硫化ストロンチウム（ＳｒＳ）等のアルカリ土類金属硫化物蛍光体材料等が使用可能であるが、これらに限定されるものではない。これらのＢａＡｌ２Ｓ４、ＺｎＳ、ＳｒＳ等の母材に遷移金属や稀土類金属イオンを微量に添加することにより、種々の色の発光が可能である。例えばＺｎＳ：Ｍｎは橙色、ＺｎＳ：Ｔｂは緑色、ＳｒＳ：Ｃｅは青緑、ＣａＳ：Ｅｕは赤色、ＢａＡｌ２Ｓ４：Ｅｕは青色に発光する。
(Inorganic EL light emitting device)
As shown in FIG. 1, the inorganic EL light emitting device according to the first embodiment of the present invention includes a color print layer (31, 32, 33) in which a display pattern is formed by a plurality of color layers 31, 32, 33; An inorganic phosphor layer 13 having a thickness of about 25 to 45 μm that emits light that passes through the color print layers (31, 32, 33) and displays an image of a display pattern by the plurality of color layers 31, 32, 33; Electric field applying means for applying an electric field of about 10 6 V / cm for causing the inorganic phosphor layer 13 to emit light to emit light toward the color print layers (31, 32, 33). 12, 14, 15, 17). Examples of the inorganic phosphor layer 13 include an aluminum sulfide-based phosphor material such as barium thioaluminate (BaAl 2 S 4 ), a zinc sulfide (ZnS) -based phosphor material, or an alkaline earth such as strontium sulfide (SrS). Although a metal sulfide fluorescent material etc. can be used, it is not limited to these. By adding a small amount of transition metal or rare earth metal ion to these base materials such as BaAl 2 S 4 , ZnS, SrS, etc., light emission of various colors is possible. For example, ZnS: Mn is orange, ZnS: Tb is green, SrS: Ce is blue-green, CaS: Eu is red, and BaAl 2 S 4 : Eu is blue.
ここで、図１に示すように、電界印加手段（１２，１４，１５，１７）は、少なくとも一部が、無機蛍光体層１３の前面に接するように、無機蛍光体層１３の前面に設けられた前面電極としての透明電極１２と、無機蛍光体層１３の背面に接して設けられた誘電体層１５と、誘電体層１５の背面側にマイグレーション防止層２１を介して設けられ、マイグレーション防止層２１及び誘電体層１５を介して透明電極１２との間に電界を形成する背面電極１７とを備える。前面電極として機能する透明電極１２としては、ポリチオフェンの誘導体であるポリ３，４−エチレンジオキシチオフェン（ＰＥＤＯＴ）、ポリ3, 4−エチレンジオキシチオフェン／ ポリスチレンスルホン酸（ＰＥＤＯＴ／ＰＳＳ）、ポリアニリン、ポリチオフェン、或いはポリジアセチレン等の導電性高分子膜（有機透明導電膜）を、厚さ１〜３μｍ程度に形成することが、無機ＥＬ発光素子の応力変形による亀裂の発生を防ぐ上で好ましい。背面電極１７としては、印刷により形成した銀（Ａｇ）、或いはＡｇに１５質量％以下程度の白金（Ｐｔ）やパラジウム（Ｐｄ）を添加した合金（Ａｇ−Ｐｔ、Ａｇ−Ｐｄ）等の金属薄膜等を厚さ８〜１５μｍ程度に形成することが好ましいが、印刷技術によって形成可能で、且つ比抵抗が低く反射率の高い導電膜であれば良いので、Ａｇ系の金属膜に限定されるものではない。マイグレーション防止層２１は、背面電極１７中に含まれるＡｇのイオンマイグレーション現象により、Ａｇのデンドライト結晶が析出することによるＡｇのウイスカー等を防止するための層であり、カーボンの薄膜等により構成することが可能である。 Here, as shown in FIG. 1, the electric field applying means (12, 14, 15, 17) is provided on the front surface of the inorganic phosphor layer 13 so that at least a part thereof is in contact with the front surface of the inorganic phosphor layer 13. The transparent electrode 12 serving as the front electrode, the dielectric layer 15 provided in contact with the back surface of the inorganic phosphor layer 13, and the back side of the dielectric layer 15 via the migration prevention layer 21 are provided to prevent migration. A back electrode 17 for forming an electric field between the transparent electrode 12 and the layer 21 via the layer 21 and the dielectric layer 15 is provided. As the transparent electrode 12 functioning as a front electrode, poly3,4-ethylenedioxythiophene (PEDOT), poly3,4-ethylenedioxythiophene / polystyrene sulfonic acid (PEDOT / PSS), polyaniline, which are derivatives of polythiophene, Forming a conductive polymer film (organic transparent conductive film) such as polythiophene or polydiacetylene with a thickness of about 1 to 3 μm is preferable in preventing cracks due to stress deformation of the inorganic EL light emitting element. As the back electrode 17, a metal thin film such as silver (Ag) formed by printing or an alloy (Ag—Pt, Ag—Pd) in which about 15 mass% or less of platinum (Pt) or palladium (Pd) is added to Ag. Etc. are preferably formed to a thickness of about 8 to 15 μm, but any conductive film that can be formed by a printing technique and has a low specific resistance and a high reflectivity may be used. is not. The migration prevention layer 21 is a layer for preventing Ag whiskers and the like due to precipitation of Ag dendrite crystals due to the ion migration phenomenon of Ag contained in the back electrode 17, and is composed of a carbon thin film or the like. Is possible.
誘電体層１５としては、印刷技術によって形成可能で、比誘電率が高く、且つ絶縁破壊電圧が高い材料が好ましく、例えば、塗布により形成したチタン酸バリウム（ＢａＴｉＯ３）薄膜やチタン酸バリウムストロンチウム（ＢａＳｒ ＴｉＯ３）薄膜等の種々の誘電体薄膜が使用可能である。誘電体層１５の比誘電率が高いほど、透明電極１２と背面電極１７との間に印加した電圧が、より有効に無機蛍光体層１３に印加される。誘電体層１５の厚みは、静電容量、絶縁破壊電圧や電気的なリーク電流を考慮して決められるが、材料としてＢａＴｉＯ３を用いた場合は、その厚さは１６μｍ以上であることが好ましい。 The dielectric layer 15 is preferably made of a material that can be formed by a printing technique, has a high dielectric constant, and a high dielectric breakdown voltage. For example, a barium titanate (BaTiO 3 ) thin film or barium strontium titanate (BaTiO 3 ) formed by coating is used. Various dielectric thin films such as BaSr TiO 3 ) thin films can be used. The higher the relative dielectric constant of the dielectric layer 15, the more effectively the voltage applied between the transparent electrode 12 and the back electrode 17 is applied to the inorganic phosphor layer 13. The thickness of the dielectric layer 15 is determined in consideration of electrostatic capacity, dielectric breakdown voltage, and electrical leakage current. However, when BaTiO 3 is used as a material, the thickness is preferably 16 μm or more. .
そして、図１に示すように、厚さ８〜１５μｍ程度のＡｇ系の金属薄膜等からなる補助前面電極１４が、無機蛍光体層１３に埋め込まれて、透明電極１２の背面の一部に金属学的に接合し、透明電極１２の一部に金属学的に接合している。補助前面電極１４も、印刷技術によって形成可能で、且つ比抵抗が低い導電膜であれば良いので、Ａｇ系の金属膜に限定されるものではない。更に、第１の実施形態に係る無機ＥＬ発光素子は、図１に示すように、透明電極１２と色印刷層（３１，３２，３３）との間に、前面透明絶縁層１１を設けている。前面透明絶縁層１１としては、クリアー塗料のような印刷技術によって形成可能で、絶縁破壊電圧が高い種々の絶縁材料が使用可能である。 As shown in FIG. 1, an auxiliary front electrode 14 made of an Ag-based metal thin film having a thickness of about 8 to 15 μm is embedded in the inorganic phosphor layer 13, and a metal is formed on a part of the back surface of the transparent electrode 12. The metal electrode is bonded to a part of the transparent electrode 12. The auxiliary front electrode 14 is not limited to an Ag-based metal film, as long as it can be formed by a printing technique and has a low specific resistance. Furthermore, as shown in FIG. 1, the inorganic EL light emitting device according to the first embodiment is provided with a front transparent insulating layer 11 between the transparent electrode 12 and the color print layers (31, 32, 33). . The front transparent insulating layer 11 can be formed by a printing technique such as a clear paint, and various insulating materials having a high dielectric breakdown voltage can be used.
なお、図９に示すように、第１の実施形態に係る無機ＥＬ発光素子は、色印刷層（３１，３２，３３）に垂直方向に、上から色印刷層（３１，３２，３３）を見た平面パターンのレイアウトにおいて、補助前面電極１４の平面パターンと、マイグレーション防止層２１と背面電極１７とからなる積層構造の平面パターンとが、重ならないようにすることで、補助前面電極１４のエッジ部から、無機蛍光体層１３及び誘電体層１５を垂直方向に貫通するように生成されたボイド６１ａ，６１ｂを経由するリーク電流の影響が背面電極１７に及ばないようにできるので、高い絶縁性が維持できる。図９では、補助前面電極１４のエッジ部から無機蛍光体層１３及び誘電体層１５を垂直方向に貫通するようにできたボイド６１ａ，６１ｂの先端の位置と、マイグレーション防止層２１／背面電極１７との端部とがΔｄだけ離れていることを示している。ボイド６１ａ，６１ｂの先端の位置とマイグレーション防止層２１／背面電極１７との端部との間の距離Δｄは、少なくとも１ｍｍ以上で好ましくは３ｍｍ程度あれば良い。一方、図１０に示すように、補助前面電極１４のエッジ部から、無機蛍光体層１３及び誘電体層１５を貫通するように生成されたボイド６１ａ，６１ｂの先端の位置が背面電極１７のパターンの内部にある場合は、誘電体層１５の高い絶縁性が確保できないので好ましくない。 As shown in FIG. 9, the inorganic EL light emitting device according to the first embodiment has the color print layers (31, 32, 33) from the top in the direction perpendicular to the color print layers (31, 32, 33). In the layout of the seen planar pattern, the edge of the auxiliary front electrode 14 is prevented from overlapping the planar pattern of the auxiliary front electrode 14 and the planar pattern of the laminated structure composed of the migration preventing layer 21 and the back electrode 17. Since the influence of the leakage current passing through the voids 61a and 61b generated so as to penetrate the inorganic phosphor layer 13 and the dielectric layer 15 in the vertical direction can be prevented from reaching the back electrode 17, it is highly insulating. Can be maintained. In FIG. 9, the positions of the tips of the voids 61 a and 61 b that penetrate the inorganic phosphor layer 13 and the dielectric layer 15 in the vertical direction from the edge portion of the auxiliary front electrode 14, and the migration prevention layer 21 / back electrode 17. It is shown that the edge part is separated by Δd. The distance Δd between the positions of the tips of the voids 61a and 61b and the end of the migration preventing layer 21 / back electrode 17 may be at least 1 mm, preferably about 3 mm. On the other hand, as shown in FIG. 10, the positions of the tips of the voids 61 a and 61 b generated so as to penetrate the inorganic phosphor layer 13 and the dielectric layer 15 from the edge portion of the auxiliary front electrode 14 are the pattern of the back electrode 17. Is not preferable because high insulation of the dielectric layer 15 cannot be secured.
図１では、３つの色層３１，３２，３３により色印刷層（３１，３２，３３）を形成しているが、表示パターンを形成するための色印刷層（３１，３２，３３）の色層の数は３に限定されるものではなく、表示パターンの要請により任意の数の色層を採用可能である。冒頭で述べたとおり、無機蛍光体層１３は、その材料に固有の色の波長の光のみを発光させることしかできなが、第１の実施形態に係る無機ＥＬ発光素子は、色印刷層（３１，３２，３３）に向かって、色印刷層（３１，３２，３３）に光を出射し、この色印刷層（３１，３２，３３）を透過する光によって、所望の表示パターンの画像を実現するようにしているので、１つの無機蛍光体層１３で、実質的にさまざまな発色や模様の形成が可能になる。 In FIG. 1, the color print layers (31, 32, 33) are formed by three color layers 31, 32, 33. However, the colors of the color print layers (31, 32, 33) for forming a display pattern are shown. The number of layers is not limited to three, and an arbitrary number of color layers can be adopted according to a request for a display pattern. As described at the beginning, the inorganic phosphor layer 13 can only emit light having a wavelength of a color unique to the material. However, the inorganic EL light emitting device according to the first embodiment has a color printing layer ( 31, 32, 33), light is emitted to the color print layer (31, 32, 33), and an image of a desired display pattern is formed by the light transmitted through the color print layer (31, 32, 33). Since this is realized, it is possible to form substantially various colors and patterns with one inorganic phosphor layer 13.
即ち、第１の実施形態に係る無機ＥＬ発光素子によれば、１種類の材料からなる無機蛍光体層１３を用いても、無機蛍光体層１３に固有の波長の光以外の発色や模様の形成が可能になる。このため、ＥＬディスプレイパネルのように、微細な画素をマトリクス状に配列する等の複雑な構造を用いなくても、図１に示すような簡単な構造を基礎として。色印刷層（３１，３２，３３）を任意に設計することにより、任意のパターンや模様を有する画像を表示できる。 That is, according to the inorganic EL light emitting device according to the first embodiment, even when the inorganic phosphor layer 13 made of one kind of material is used, the inorganic phosphor layer 13 has a color or pattern other than light having a wavelength unique to the inorganic phosphor layer 13. Formation becomes possible. For this reason, a simple structure as shown in FIG. 1 is used as a basis without using a complicated structure such as an EL display panel in which fine pixels are arranged in a matrix. An image having an arbitrary pattern or pattern can be displayed by arbitrarily designing the color print layers (31, 32, 33).
（樹脂成形品）
本発明の第１の実施形態に係る樹脂成形品は、上記において説明した無機ＥＬ発光素子（３１，３２，３３，１１，１３，１２，１４，１５，１６）を発光体部とし、この発光体部を樹脂成形部１９の上部に埋め込んで、図２に示すように、印刷技術により形成した色印刷層（３１，３２，３３）によって、所望の画像を表示させるようにしている（図２の鳥瞰図のＡ−Ａ方向からみた断面が図１に対応する。）。
(Resin molded product)
The resin molded product according to the first embodiment of the present invention uses the inorganic EL light emitting element (31, 32, 33, 11, 13, 12, 14, 15, 16) described above as a light emitter part, and emits this light. A body part is embedded in the upper part of the resin molding part 19, and as shown in FIG. 2, a desired image is displayed by the color printing layers (31, 32, 33) formed by the printing technique (FIG. 2). The cross section seen from the AA direction of the bird's-eye view corresponds to FIG.
即ち、第１の実施形態に係る樹脂成形品は、図１に示すように、複数の色層３１，３２，３３により、所望の画像の表示パターンを形成した色印刷層（３１，３２，３３）と、この色印刷層（３１，３２，３３）の下面に設けられた前面透明絶縁層１１と、前面透明絶縁層１１の下面に設けられた透明電極１２と、透明電極１２の下面に選択的に設けられた補助前面電極１４と、補助前面電極１４の下面及び補助前面電極１４が配置されていない部分の透明電極１２の下面に設けられた無機蛍光体層１３と、無機蛍光体層１３の下面に設けられた誘電体層１５と、誘電体層１５の下面の一部に設けられたマイグレーション防止層２１と、マイグレーション防止層２１に接して設けられた背面電極１７と、背面電極１７の下面、及びマイグレーション防止層２１／背面電極１７が配置されていない部分の誘電体層１５の下面に設けられた背面保護絶縁層１６と、背面保護絶縁層１６の下面に設けられた接着層１８と、接着層１８を介してその凹部に発光体部（３１，３２，３３，１１，１３，１２，１４，１５，１６）を埋め込む樹脂成形部１９とを備える。マイグレーション防止層２１と背面電極１７とからなる積層構造の平面パターンは、色印刷層（３１，３２，３３）に垂直方向から色印刷層（３１，３２，３３）を見た場合において、補助前面電極１４のパターンと平面パターンが重ならないように設計されている。 That is, the resin molded product according to the first embodiment has a color print layer (31, 32, 33) in which a desired image display pattern is formed by a plurality of color layers 31, 32, 33 as shown in FIG. ), The front transparent insulating layer 11 provided on the lower surface of the color print layer (31, 32, 33), the transparent electrode 12 provided on the lower surface of the front transparent insulating layer 11, and the lower surface of the transparent electrode 12 are selected. The auxiliary front electrode 14 provided on the surface, the inorganic phosphor layer 13 provided on the lower surface of the auxiliary front electrode 14 and the lower surface of the transparent electrode 12 where the auxiliary front electrode 14 is not disposed, and the inorganic phosphor layer 13 A dielectric layer 15 provided on the lower surface of the first electrode, a migration preventing layer 21 provided on a part of the lower surface of the dielectric layer 15, a back electrode 17 provided in contact with the migration preventing layer 21, and a back electrode 17 Bottom surface and my gray The back surface protection insulating layer 16 provided on the lower surface of the dielectric layer 15 where the back surface prevention layer 21 / the back electrode 17 is not disposed, and the adhesive layer 18 provided on the lower surface of the back surface protection insulating layer 16 are bonded. The resin molding part 19 which embeds the light emitter part (31, 32, 33, 11, 13, 12, 14, 15, 16) in the concave part through the layer 18 is provided. The planar pattern of the laminated structure composed of the migration prevention layer 21 and the back electrode 17 is obtained when the color print layer (31, 32, 33) is viewed from the direction perpendicular to the color print layer (31, 32, 33). It is designed so that the pattern of the electrode 14 and the planar pattern do not overlap.
樹脂成形部１９の材料としてはアクリロニトリルブタジエンスチレン共重合体（ＡＢＳ）樹脂、ポリプロピレン（ＰＰ）樹脂、ポリエチレン（ＰＥ）樹脂、アクリロニトリルスチレン共重合体（ＡＳ）樹脂、ポリスチレン（ＰＳ）樹脂、ポリメタクリル酸メチル（アクリル）（ＰＭＭＡ）樹脂、ポリエチレンテレフタレート（ＰＥＴ）樹脂、ポリ塩化ビニル（ＰＶＣ）樹脂、ポリビニルアルコール（ＰＶＡ）樹脂、ポリ塩化ビニリデン（ＰＶＤＣ）樹脂、ポリブタジエン（ＰＢＤ）樹脂、ポリアミド（ナイロン）（ＰＡ）樹脂、ポリオキシメチレン（アセタール）（ＰＯＭ）樹脂、ポリカーボネート（ＰＣ）樹脂、ポリフェニレンエーテル（ＰＰＥ）樹脂、ポリブチレンテレフタレート（ＰＢＴ）樹脂等の種々の樹脂が使用可能である。 As the material of the resin molding part 19, acrylonitrile butadiene styrene copolymer (ABS) resin, polypropylene (PP) resin, polyethylene (PE) resin, acrylonitrile styrene copolymer (AS) resin, polystyrene (PS) resin, polymethacrylic acid Methyl (acrylic) (PMMA) resin, polyethylene terephthalate (PET) resin, polyvinyl chloride (PVC) resin, polyvinyl alcohol (PVA) resin, polyvinylidene chloride (PVDC) resin, polybutadiene (PBD) resin, polyamide (nylon) ( Various resins such as PA) resin, polyoxymethylene (acetal) (POM) resin, polycarbonate (PC) resin, polyphenylene ether (PPE) resin, and polybutylene terephthalate (PBT) resin can be used.
第１の実施形態に係る樹脂成形品は、透明電極１２として、ＰＥＤＯＴ、ＰＥＤＯＴ／ＰＳＳ、ポリアニリン、ポリチオフェン、或いはポリジアセチレン等の導電性高分子膜（有機透明導電膜）を用いているので、樹脂成形時に熱と圧力が加わって、透明電極１２が変形しても、ＩＴＯ膜のように、亀裂が発生することもない。 Since the resin molded product according to the first embodiment uses a conductive polymer film (organic transparent conductive film) such as PEDOT, PEDOT / PSS, polyaniline, polythiophene, or polydiacetylene as the transparent electrode 12, a resin is used. Even when heat and pressure are applied during molding and the transparent electrode 12 is deformed, cracks do not occur unlike the ITO film.
（転写シート）
図１及び図２に示した第１の実施形態に係る樹脂成形品は、図４に示すような凸部を有する転写シートを用意して、この転写シートの凸部を成形金型の内部に導入して樹脂成形をすることにより、凸部を樹脂成形部１９の上部に埋め込んで、製造可能である。
(Transfer sheet)
The resin molded product according to the first embodiment shown in FIGS. 1 and 2 is provided with a transfer sheet having a convex portion as shown in FIG. 4, and the convex portion of the transfer sheet is placed inside the molding die. By introducing and molding the resin, the convex portion can be embedded in the upper portion of the resin molding portion 19 and manufactured.
そこで、先ず、図４及び図５に示す転写シートの構造を説明する（図５は、転写シートの要部を示すＳＥＭ写真である。）。即ち、本発明の第１の実施形態に係る転写シートは、厚さ２０〜７０μｍのＰＥＴフィルム等の基板４１と、この基板４１の上の全面に設けられた剥離層４２と、この剥離層４２の上部の一部に選択的に印刷された複数の色層３１，３２，３３を含む色印刷層（３１，３２，３３）と、基板４１の上方に設けられ、色印刷層（３１，３２，３３）を透過する光を出射し、複数の色層３１，３２，３３により画像を表示させる無機蛍光体層１３と、基板４１の上方に設けられ、光を出射させるために、無機蛍光体層１３を発光させる電界を、無機蛍光体層１３に印加する電界印加手段（１２，１４，１５，１７）とを備える。剥離層４２には、アクリル系樹脂やメラミン系樹脂が使用可能で、メラミン系樹脂は、ハードコート機能を有する樹脂を用いても良い。剥離層４２の厚みさとしては、０．５μｍ〜５μｍ程度の値が採用可能である。 First, the structure of the transfer sheet shown in FIGS. 4 and 5 will be described (FIG. 5 is an SEM photograph showing the main part of the transfer sheet). That is, the transfer sheet according to the first embodiment of the present invention includes a substrate 41 such as a PET film having a thickness of 20 to 70 μm, a release layer 42 provided on the entire surface of the substrate 41, and the release layer 42. A color printing layer (31, 32, 33) including a plurality of color layers 31, 32, 33 selectively printed on a part of the upper portion of the substrate, and a color printing layer (31, 32) provided above the substrate 41. 33), an inorganic phosphor layer 13 that emits light that passes through the plurality of color layers 31, 32, and 33, and an inorganic phosphor layer that is provided above the substrate 41 and emits light. Electric field applying means (12, 14, 15, 17) for applying an electric field for causing the layer 13 to emit light to the inorganic phosphor layer 13 is provided. An acrylic resin or a melamine resin can be used for the release layer 42, and a resin having a hard coat function may be used as the melamine resin. As the thickness of the release layer 42, a value of about 0.5 μm to 5 μm can be adopted.
第１の実施形態に係る転写シートの電界印加手段（１２，１４，１５，１７）が、少なくとも一部が無機蛍光体層１３の前面に接するようにして、無機蛍光体層１３の下面に設けられた透明電極１２と、無機蛍光体層１３の上面に接して設けられた誘電体層１５と、誘電体層１５の上面の一部に設けられたマイグレーション防止層２１と、マイグレーション防止層２１に接して設けられ、マイグレーション防止層２１及び誘電体層１５を介して透明電極１２との間に電界を形成する背面電極１７と、透明電極１２の一部に金属学的に接合した補助前面電極１４と備えることは、上述したとおりである。即ち、第１の実施形態に係る転写シートは、図４に示すように、基板４１と、この基板４１の上の全面に設けられた剥離層４２と、複数の色層３１，３２，３３により、所望の画像の表示パターンを形成した色印刷層（３１，３２，３３）と、この色印刷層（３１，３２，３３）の上面に設けられた前面透明絶縁層１１と、前面透明絶縁層１１の上面に設けられた透明電極１２と、透明電極１２の上面に選択的に設けられた補助前面電極１４と、補助前面電極１４の上面及び補助前面電極１４が配置されていない部分の透明電極１２の上面に設けられた無機蛍光体層１３と、無機蛍光体層１３の上面に設けられた誘電体層１５と、誘電体層１５の上面の一部に設けられたマイグレーション防止層２１と、マイグレーション防止層２１に接して設けられた背面電極１７と、背面電極１７の上面、及びマイグレーション防止層２１／背面電極１７が配置されていない部分の誘電体層１５の上面に設けられた背面保護絶縁層１６と、背面保護絶縁層１６の上面に設けられた接着層１８とを備える。マイグレーション防止層２１と背面電極１７とからなる積層構造がなす平面パターンは、色印刷層（３１，３２，３３）に垂直方向から色印刷層（３１，３２，３３）を見た場合において、補助前面電極１４の平面パターンと、マイグレーション防止層２１／背面電極１７の平面パターンが重ならないように設計されている。 The transfer sheet electric field applying means (12, 14, 15, 17) according to the first embodiment is provided on the lower surface of the inorganic phosphor layer 13 so that at least a part thereof is in contact with the front surface of the inorganic phosphor layer 13. The transparent electrode 12, the dielectric layer 15 provided in contact with the top surface of the inorganic phosphor layer 13, the migration prevention layer 21 provided on a part of the top surface of the dielectric layer 15, and the migration prevention layer 21 A back electrode 17 provided in contact with the transparent electrode 12 through the migration preventing layer 21 and the dielectric layer 15, and an auxiliary front electrode 14 metallurgically bonded to a part of the transparent electrode 12 The provision is as described above. That is, as shown in FIG. 4, the transfer sheet according to the first embodiment includes a substrate 41, a release layer 42 provided on the entire surface of the substrate 41, and a plurality of color layers 31, 32, and 33. The color print layer (31, 32, 33) on which a desired image display pattern is formed, the front transparent insulating layer 11 provided on the upper surface of the color print layer (31, 32, 33), and the front transparent insulating layer The transparent electrode 12 provided on the upper surface of the electrode 11, the auxiliary front electrode 14 selectively provided on the upper surface of the transparent electrode 12, and the transparent electrode in the portion where the upper surface of the auxiliary front electrode 14 and the auxiliary front electrode 14 are not disposed. An inorganic phosphor layer 13 provided on the upper surface of the dielectric layer 12, a dielectric layer 15 provided on the upper surface of the inorganic phosphor layer 13, a migration prevention layer 21 provided on a part of the upper surface of the dielectric layer 15, In contact with the migration prevention layer 21 A back protective insulating layer 16 provided on the top surface of the dielectric layer 15 in a portion where the back electrode 17 and the top surface of the back electrode 17 and the migration preventing layer 21 / the back electrode 17 are not disposed; And an adhesive layer 18 provided on the upper surface of the layer 16. The planar pattern formed by the laminated structure including the migration prevention layer 21 and the back electrode 17 is an auxiliary when the color print layer (31, 32, 33) is viewed from the direction perpendicular to the color print layer (31, 32, 33). It is designed so that the planar pattern of the front electrode 14 and the planar pattern of the migration preventing layer 21 / back electrode 17 do not overlap.
そして、剥離層４２の上部の一部に、色印刷層（３１，３２，３３）、前面透明絶縁層１１、透明電極１２、補助前面電極１４、無機蛍光体層１３、誘電体層１５、マイグレーション防止層２１、背面電極１７、背面保護絶縁層１６及び接着層１８の多層構造を設けて、この多層構造によって、転写シートの凸部を構成している。 In addition, the color printing layer (31, 32, 33), the front transparent insulating layer 11, the transparent electrode 12, the auxiliary front electrode 14, the inorganic phosphor layer 13, the dielectric layer 15, and the migration are formed on a part of the upper portion of the peeling layer 42. The multilayer structure of the prevention layer 21, the back electrode 17, the back surface protection insulating layer 16, and the adhesive layer 18 is provided, and the convex portion of the transfer sheet is configured by this multilayer structure.
（転写シートの製造方法及び樹脂成形品の製造方法）
従来の無機ＥＬ発光素子は、ＩＴＯ膜を透明電極として用いていた。このため、色印刷層（３１，３２，３３）を行った後、ＩＴＯ膜を形成するとなると、色印刷工程後にＩＴＯ膜を真空蒸着やスパッタリングで堆積する真空工程やＣＶＤ工程が必要となり、その後再度印刷工程で無機蛍光体層１３、誘電体層１５、マイグレーション防止層２１や背面電極１７等を形成しなければならず、工程が複雑になる。本発明の第１の実施形態に係る転写シートによれば、以下に説明するとおり、真空を使わないで全印刷法により無機ＥＬ発光素子を転写用の凸部に含んだ転写シートを製造できる。
(Transfer sheet manufacturing method and resin molded product manufacturing method)
Conventional inorganic EL light-emitting elements use an ITO film as a transparent electrode. For this reason, when an ITO film is formed after the color printing layers (31, 32, 33), a vacuum process or a CVD process for depositing the ITO film by vacuum evaporation or sputtering is necessary after the color printing process, and then again. In the printing process, the inorganic phosphor layer 13, the dielectric layer 15, the migration prevention layer 21, the back electrode 17, and the like must be formed, which complicates the process. According to the transfer sheet according to the first embodiment of the present invention, as described below, a transfer sheet including an inorganic EL light emitting element in a transfer convex portion can be manufactured by a full printing method without using a vacuum.
そこで、図４〜図８を用いて、本発明の第１の実施の形態に係る転写シートの製造方法、及びこの転写シートを用いた樹脂成形品の製造方法を説明する。なお、以下に述べる転写シートの製造方法は、基板４１の上に剥離層４２を形成する工程と、剥離層４２の上部の一部に、複数の色層３１，３２，３３を含む色印刷層（３１，３２，３３）を形成する工程と、色印刷層（３１，３２，３３）の上方に、色印刷層（３１，３２，３３）を透過する光を出射し、複数の色層３１，３２，３３により画像を表示させる無機蛍光体層１３、及び光を出射させるために、無機蛍光体層１３を発光させる電界を、無機蛍光体層１３に印加する電界印加手段（１２，１４，１５，１７）を形成する工程とを含む一連の工程を基礎とするものであるが、以下に述べる転写シートの製造方法、及び樹脂成形品の製造方法は、一例であり、特許請求の範囲に記載した趣旨の範囲内であれば、この変形例を含めて、これ以外の種々の製造方法により、実現可能であることは勿論である。 A method for manufacturing a transfer sheet according to the first embodiment of the present invention and a method for manufacturing a resin molded product using the transfer sheet will be described with reference to FIGS. The transfer sheet manufacturing method described below includes a step of forming a release layer 42 on a substrate 41 and a color print layer including a plurality of color layers 31, 32, 33 on a part of the upper portion of the release layer 42. (31, 32, 33) is formed, and light that passes through the color print layers (31, 32, 33) is emitted above the color print layers (31, 32, 33). , 32, 33, and an inorganic phosphor layer 13 for displaying an image, and an electric field applying means for applying an electric field for causing the inorganic phosphor layer 13 to emit light to emit light to the inorganic phosphor layer 13 (12, 14, 15 and 17), the transfer sheet manufacturing method and the resin molded product manufacturing method described below are examples, and the scope of the claims is as follows. If it is within the scope of the description, including this modification, The various manufacturing methods other than that, it is of course feasible.
（イ）先ず、ＰＥＴフィルム等の基板４１を用意し、この基板４１の上に剥離層４２を形成した後、図３に示すように、印刷により、剥離層４２の上部の一部に、複数の色層３１，３２，３３を含む色印刷層（３１，３２，３３）を形成する。複数の色層３１，３２，３３のインキとしては、ウレタン系のスクリーンインキ（例えば、株式会社セイコーアドバンス製の「ＶＩＣ」、アクリル系のスクリーンインキ（例えば、帝国インキ製造株式会社製の「ＩＰＸ」）等が使用可能である。更に、色印刷層（３１，３２，３３）の上に、酢酸エチルやアセトン等の溶媒にアクリル樹脂や硬化剤等のバインダー成分を溶かしたクリアー塗料組成物をインキとして用いて塗布（印刷）し、その後乾燥することにより、前面透明絶縁層１１を形成する。クリアー塗料組成物には、ホウケイ酸系又は鉛ホウケイ酸系のガラス粉末が溶かされていても良く、燐ドープシリケート系のスピン・オン・ガラス（ＳＯＧ）、メチルシロキサン系SOG、ハイメチルシロキサン系SOGを塗布して、その後乾燥させて、前面透明絶縁層１１を形成しても良い。 (A) First, a substrate 41 such as a PET film is prepared, and a release layer 42 is formed on the substrate 41. Then, as shown in FIG. The color print layers (31, 32, 33) including the color layers 31, 32, 33 are formed. As the ink of the plurality of color layers 31, 32, 33, urethane screen ink (for example, “VIC” manufactured by Seiko Advance Co., Ltd.), acrylic screen ink (for example, “IPX” manufactured by Teikoku Ink Manufacturing Co., Ltd.). In addition, a clear coating composition in which a binder component such as an acrylic resin or a curing agent is dissolved in a solvent such as ethyl acetate or acetone on the color printing layer (31, 32, 33) is used as an ink. Is applied (printed), and then dried to form the front transparent insulating layer 11. In the clear coating composition, borosilicate or lead borosilicate glass powder may be dissolved, Apply phosphorus-doped silicate spin-on-glass (SOG), methylsiloxane-based SOG, and high-methylsiloxane-based SOG, then dry It may be formed front transparent insulating layer 11.
（ロ）この後、前面透明絶縁層１１の上に、ＰＥＤＯＴ、ＰＥＤＯＴ／ＰＳＳ、ＰＥＤＯＴ／ＰＶＳ、ポリアニリン、ポリチオフェン、或いはポリジアセチレン等の導電性高分子を主材料としたインキを塗布（印刷）し、その後乾燥することにより、導電性高分子膜（有機透明導電膜）からなる透明電極１２を形成する。導電性高分子の粒径は４００ｎｍ以下程度が好ましい。更に、透明電極１２上の一部に、Ａｇナノ粒子をインキとした印刷法（塗布法）により、透明電極１２の上に選択的にＡｇ薄膜からなる補助前面電極１４を形成し、補助前面電極１４を透明電極１２に金属学的に接合する。補助前面電極１４を形成した後、透明電極１２の補助前面電極１４が形成されていない残余の部分及び補助前面電極１４の上に、印刷法（塗布法）により、無機蛍光体層１３を形成する。無機蛍光体層１３は、酢酸エチル等の溶媒にアクリル樹脂や硬化剤等のバインダー成分、更には分散剤、紫外線吸収剤等の添加剤とともに、遷移金属や稀土類金属イオンが添加されたＢａＡｌ２Ｓ４、ＺｎＳ、ＳｒＳ等の蛍光体材料の粉末を溶かしたインキを塗布（印刷）し、その後乾燥して形成する。この無機蛍光体層１３上に、酢酸エチル等の溶媒にアクリル樹脂や硬化剤等のバインダー成分、更には分散剤等の添加剤とともに、ＢａＴｉＯ３やＢａＳｒ ＴｉＯ３等の誘電率の高い高誘電体の粉末を溶かしたインキを塗布（印刷）し、その後乾燥して、誘電体層１５を形成する。更に、誘電体層１５上に、カーボンナノ粒子をインキとした印刷法（塗布法）により、カーボン薄膜からなるマイグレーション防止層２１を形成した後、Ａｇナノ粒子をインキとした印刷法（塗布法）により、Ａｇ薄膜からなる背面電極１７を形成する。これら一連の工程により、色印刷層（３１，３２，３３）を透過する光を出射し、複数の色層３１，３２，３３により画像を表示させる無機蛍光体層１３、及び無機蛍光体層１３から光を出射させるために、無機蛍光体層１３を励起して発光させるための電界を無機蛍光体層１３に印加する電界印加手段（１２，１４，１５，１７）が形成される。そして、背面電極１７の上面、及びマイグレーション防止層２１／背面電極１７が配置されていない部分の誘電体層１５の上面に、印刷法（塗布法）により背面保護絶縁層１６を形成し、背面保護絶縁層１６の上面に、印刷法（塗布法）により接着層１８を形成する。この一連の工程の結果、図４に示すように、剥離層４２の上部の一部に、色印刷層（３１，３２，３３）、前面透明絶縁層１１、透明電極１２、補助前面電極１４、無機蛍光体層１３、誘電体層１５、マイグレーション防止層２１、背面電極１７、背面保護絶縁層１６及び接着層１８の多層構造によって、凸部が構成された転写シートが完成する。 (B) After that, on the front transparent insulating layer 11, an ink mainly composed of a conductive polymer such as PEDOT, PEDOT / PSS, PEDOT / PVS, polyaniline, polythiophene, or polydiacetylene is applied (printed). Thereafter, the transparent electrode 12 made of a conductive polymer film (organic transparent conductive film) is formed by drying. The particle size of the conductive polymer is preferably about 400 nm or less. Further, an auxiliary front electrode 14 made of an Ag thin film is selectively formed on the transparent electrode 12 by a printing method (coating method) using Ag nanoparticles as an ink on a part of the transparent electrode 12. 14 is metallurgically bonded to the transparent electrode 12. After the auxiliary front electrode 14 is formed, the inorganic phosphor layer 13 is formed by a printing method (coating method) on the remaining portion of the transparent electrode 12 where the auxiliary front electrode 14 is not formed and the auxiliary front electrode 14. . The inorganic phosphor layer 13 is a BaAl 2 in which transition metal or rare earth metal ions are added to a solvent such as ethyl acetate together with a binder component such as an acrylic resin and a curing agent, and further an additive such as a dispersant and an ultraviolet absorber. It is formed by applying (printing) an ink in which a powder of a phosphor material such as S 4 , ZnS, or SrS is dissolved and then drying. On this inorganic phosphor layer 13, a high dielectric constant such as BaTiO 3 or BaSr TiO 3 together with a binder component such as an acrylic resin and a curing agent in a solvent such as ethyl acetate, and further an additive such as a dispersant. The dielectric layer 15 is formed by applying (printing) ink in which the powder is dissolved and then drying. Furthermore, after forming the migration prevention layer 21 made of a carbon thin film on the dielectric layer 15 by a printing method (coating method) using carbon nanoparticles as an ink, a printing method (coating method) using Ag nanoparticles as an ink. Thus, the back electrode 17 made of an Ag thin film is formed. Through these series of steps, the inorganic phosphor layer 13 that emits light that passes through the color print layers (31, 32, 33) and displays an image by the plurality of color layers 31, 32, 33, and the inorganic phosphor layer 13 The electric field applying means (12, 14, 15, 17) for applying an electric field for exciting and emitting the inorganic phosphor layer 13 to the inorganic phosphor layer 13 is formed. Then, a back protective insulating layer 16 is formed by a printing method (coating method) on the top surface of the back electrode 17 and the top surface of the dielectric layer 15 where the migration preventing layer 21 / back electrode 17 is not disposed, thereby protecting the back surface. An adhesive layer 18 is formed on the upper surface of the insulating layer 16 by a printing method (coating method). As a result of this series of steps, as shown in FIG. 4, the color printing layer (31, 32, 33), the front transparent insulating layer 11, the transparent electrode 12, the auxiliary front electrode 14, A transfer sheet having convex portions is completed by the multilayer structure of the inorganic phosphor layer 13, the dielectric layer 15, the migration prevention layer 21, the back electrode 17, the back surface protective insulating layer 16, and the adhesive layer 18.
（ハ）そして、転写シートの凸部を、別途用意した成形金型５１の内部に導入し、成形金型５１の解放端を基板４１及び剥離層４２で閉じる。具体的には、まず低い圧力で型閉じを行い、型閉じ完了直前に、図示を省略した蓋部を用いて、更に高い圧力で型閉じを行い、成形金型５１を強力に閉じる2段階の型締め動作が、衝撃等を防止する上では好ましい。その後、図６に示すように、樹脂注入パイプ５２を介して、成形金型５１の内部に、図示を省略した加熱シリンダの中で１８０℃〜２６０℃程度に加熱・混練され、溶融して可塑化された成形樹脂１９Ｐを導入し、成形金型５１と凸部との間の空隙を、溶融した成形樹脂１９Ｐで充填する。このとき、図示を省略した加熱シリンダより成形金型５１内へ高い圧力で射出されるが、透明電極１２の材料として、ＰＥＤＯＴ、ＰＥＤＯＴ／ＰＳＳ、ポリアニリン、ポリチオフェン、或いはポリジアセチレン等の導電性高分子膜（有機透明導電膜）を用いているため、熱と圧力が加わっても透明電極１２には、亀裂が発生することはない。溶融した成形樹脂１９Ｐを冷却して固化すれば、図７に示すように、成形金型５１と凸部との間の空隙に樹脂成形部１９が形成されて充填される。冷却時には、溶融した成形樹脂１９Ｐを成形金型５１内に充填させる射出圧力（1次圧）に加え更に保圧（2次圧）を加えて、成形金型５１内に充填された成形樹脂１９Ｐに圧力をかけることによって、冷却固化されるときに発生する成形収縮分の成形樹脂１９Ｐをさらに追加して、成形品のヒケなどを抑えるのが好ましい。 (C) Then, the convex portion of the transfer sheet is introduced into a separately prepared molding die 51, and the release end of the molding die 51 is closed with the substrate 41 and the release layer 42. Specifically, the mold is first closed at a low pressure, and immediately before the completion of the mold closing, using a lid portion (not shown), the mold is closed at a higher pressure to strongly close the molding die 51. The mold clamping operation is preferable for preventing impact and the like. After that, as shown in FIG. 6, it is heated and kneaded at about 180 ° C. to 260 ° C. in a heating cylinder (not shown) through a resin injection pipe 52 in a heating cylinder (not shown) and melted to be plasticized. The molded molding resin 19P is introduced, and the gap between the molding die 51 and the convex portion is filled with the molten molding resin 19P. At this time, it is injected at a high pressure into the molding die 51 from a heating cylinder (not shown), but as a material for the transparent electrode 12, a conductive polymer such as PEDOT, PEDOT / PSS, polyaniline, polythiophene, or polydiacetylene. Since a film (organic transparent conductive film) is used, the transparent electrode 12 does not crack even when heat and pressure are applied. When the molten molding resin 19P is cooled and solidified, the resin molding portion 19 is formed and filled in the gap between the molding die 51 and the convex portion as shown in FIG. At the time of cooling, in addition to the injection pressure (primary pressure) for filling the molding die 51 with the molten molding resin 19P, a holding pressure (secondary pressure) is further applied to fill the molding die 19P filled in the molding die 51. It is preferable to further add a molding resin 19P corresponding to molding shrinkage that occurs when cooled and solidified by applying pressure to the molded article to suppress sink marks and the like of the molded product.
（ニ）成形樹脂１９Ｐの可塑化と成形樹脂１９Ｐの冷却が完了すると、成形金型５１の型開きを行い、図７に示すように、剥離層４２を介して基板４１と転写シートの凸部とを分離すれば、樹脂成形部１９の内部に転写シートの凸部が埋め込まれる。その後、図示を省略した押出し装置によって、樹脂成形部１９を押出せば、成形金型５１が除去され、図１及び図２に示した第１の実施形態に係る樹脂成形品が完成する。 (D) When the plasticization of the molding resin 19P and the cooling of the molding resin 19P are completed, the molding die 51 is opened, and as shown in FIG. Are separated from each other, the convex portion of the transfer sheet is embedded in the resin molded portion 19. Then, if the resin molding part 19 is extruded with the extrusion apparatus which abbreviate | omitted illustration, the molding die 51 will be removed and the resin molded product which concerns on 1st Embodiment shown in FIG.1 and FIG.2 will be completed.
以上のように、本発明の第１の実施の形態に係る転写シートの製造方法、及びこの転写シートを用いた樹脂成形品の製造方法によれば、印刷によって成膜された導電性高分子膜（有機透明導電膜）を用いているので、色印刷層（３１，３２，３３）を形成した後において、引き続き、全印刷工程で、転写シートを製造でき、ＩＴＯ膜の場合のように、真空工程やＣＶＤ工程が不要となるので、製造コストを下げ、且つ短時間で成膜できるという有利な効果を奏することが可能となる。 As described above, according to the transfer sheet manufacturing method and the resin molded product manufacturing method using the transfer sheet according to the first embodiment of the present invention, the conductive polymer film formed by printing is used. Since the (organic transparent conductive film) is used, after forming the color printing layers (31, 32, 33), the transfer sheet can be manufactured continuously in all printing steps, and vacuum is applied as in the case of the ITO film. Since the process and the CVD process are not required, it is possible to produce advantageous effects that the manufacturing cost can be reduced and the film can be formed in a short time.
（その他の実施形態）
上記のように、本発明は第１の実施の形態によって記載したが、この開示の一部をなす論述及び図面は本発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施形態、実施例及び運用技術が明らかとなろう。
(Other embodiments)
As described above, the present invention has been described according to the first embodiment. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.
既に述べたように、誘電体層１５としては、比誘電率が高く、且つ絶縁破壊電圧が高い材料が好ましいが、絶縁破壊電圧を高くするためには、図１１〜図１３に示すように、誘電体層を多層印刷で多層構造に構成しても構わない。特に、１回の塗布（印刷）で形成できる誘電体層の厚さが薄い場合は、重ね塗りすることが好ましい。例えば、図１１に示すように、複数の色層３１，３２，３３を有する色印刷層（３１，３２，３３）と、この色印刷層（３１，３２，３３）の背面に設けられた前面透明絶縁層１１と、前面透明絶縁層１１の背面に設けられた透明電極１２と、透明電極１２の背面に選択的に設けられた補助前面電極１４と、補助前面電極１４の背面及び補助前面電極１４が配置されていない部分の透明電極１２の背面に設けられた無機蛍光体層１３と、無機蛍光体層１３の背面に設けられた第１の誘電体層１５ａと、第１の誘電体層１５ａの背面に設けられた第２の誘電体層１５ｂと、第２の誘電体層１５ｂの背面の一部に設けられたマイグレーション防止層２１と、マイグレーション防止層２１に接して設けられた背面電極１７と、背面電極１７の背面、及び背面電極１７が配置されていない部分の第２の誘電体層１５ｂの背面に設けられた背面保護絶縁層１６と、背面保護絶縁層１６の背面に設けられた接着層１８と、接着層１８を介してその凹部に発光体部（３１，３２，３３，１１，１３，１２，１４，１５，１６）を埋め込む樹脂成形部１９とを備えるようにして、無機蛍光体層１３と背面電極１７との間に、２層の誘電体層１５ａ，１５ｂを構成しても良い。 As already described, the dielectric layer 15 is preferably made of a material having a high relative dielectric constant and a high breakdown voltage, but in order to increase the breakdown voltage, as shown in FIGS. The dielectric layer may be configured in a multilayer structure by multilayer printing. In particular, when the thickness of the dielectric layer that can be formed by one application (printing) is thin, it is preferable to perform overcoating. For example, as shown in FIG. 11, a color printing layer (31, 32, 33) having a plurality of color layers 31, 32, 33, and a front surface provided on the back surface of the color printing layer (31, 32, 33). The transparent insulating layer 11, the transparent electrode 12 provided on the back surface of the front transparent insulating layer 11, the auxiliary front electrode 14 selectively provided on the back surface of the transparent electrode 12, the back surface of the auxiliary front electrode 14 and the auxiliary front electrode Inorganic phosphor layer 13 provided on the back surface of transparent electrode 12 in a portion where 14 is not disposed, first dielectric layer 15 a provided on the back surface of inorganic phosphor layer 13, and first dielectric layer The second dielectric layer 15b provided on the back surface of 15a, the migration prevention layer 21 provided on a part of the back surface of the second dielectric layer 15b, and the back electrode provided in contact with the migration prevention layer 21 17 and the back surface of the back electrode 17, The back protective insulating layer 16 provided on the back surface of the second dielectric layer 15b where the back electrode 17 is not disposed, the adhesive layer 18 provided on the back surface of the back protective insulating layer 16, and the adhesive layer 18 The inorganic phosphor layer 13 and the back electrode 17 are provided with a resin molding portion 19 in which the light emitting portion (31, 32, 33, 11, 13, 12, 14, 15, 16) is embedded in the concave portion via Two dielectric layers 15a and 15b may be formed between the two.
あるいは、図１２に示すように、無機蛍光体層１３の背面に第１の誘電体層１５ｏを設け、この第１の誘電体層１５ｏの背面に第２の誘電体層１５ｐを設け、この第２の誘電体層１５ｐの背面に第３の誘電体層１５ｑを設け、第３の誘電体層１５ｑの背面にマイグレーション防止層２１を介して背面電極１７を設けて、無機蛍光体層１３と背面電極１７との間に、３層の誘電体層１５ｏ，１５ｐ，１５ｑを構成しても良い。 Alternatively, as shown in FIG. 12, a first dielectric layer 15o is provided on the back surface of the inorganic phosphor layer 13, and a second dielectric layer 15p is provided on the back surface of the first dielectric layer 15o. The third dielectric layer 15q is provided on the back surface of the second dielectric layer 15p, the back electrode 17 is provided on the back surface of the third dielectric layer 15q via the migration preventing layer 21, and the inorganic phosphor layer 13 and the back surface are provided. Three dielectric layers 15o, 15p, and 15q may be formed between the electrode 17 and the electrode 17.
更に、図１３に示すように、無機蛍光体層１３の背面に第１の誘電体層１５ｒを設け、この第１の誘電体層１５ｒの背面に第２の誘電体層１５ｓを設け、この第２の誘電体層１５ｓの背面に第３の誘電体層１５ｔを設け、第３の誘電体層１５ｔの背面に第４の誘電体層１５ｕを設け、第４の誘電体層１５ｕの背面にマイグレーション防止層２１を介して背面電極１７を設けて、無機蛍光体層１３と背面電極１７との間に、４層の誘電体層１５ｒ，１５ｓ，１５ｔ、１５ｕを構成しても良く、更に５層以上の多層構造としても構わない。例えば、図１３に示すように４層の誘電体層１５ｒ，１５ｓ，１５ｔ、１５ｕの場合には、各層の厚みを１２μｍとすれば、合計の厚さは４８μｍとなる。 Further, as shown in FIG. 13, a first dielectric layer 15r is provided on the back surface of the inorganic phosphor layer 13, and a second dielectric layer 15s is provided on the back surface of the first dielectric layer 15r. The third dielectric layer 15t is provided on the back surface of the second dielectric layer 15s, the fourth dielectric layer 15u is provided on the back surface of the third dielectric layer 15t, and migration is performed on the back surface of the fourth dielectric layer 15u. The back electrode 17 may be provided via the prevention layer 21, and four dielectric layers 15 r, 15 s, 15 t, and 15 u may be formed between the inorganic phosphor layer 13 and the back electrode 17. The above multilayer structure may be used. For example, as shown in FIG. 13, in the case of four dielectric layers 15r, 15s, 15t, and 15u, if the thickness of each layer is 12 μm, the total thickness is 48 μm.
このように、本発明はここでは記載していない様々な実施形態等を含むことは勿論である。したがって、本発明の技術的範囲は上記の説明から妥当な特許請求の範囲に係る発明特定事項によってのみ定められるものである。 As described above, the present invention naturally includes various embodiments not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.
本発明の無機ＥＬ発光素子、樹脂成形品、転写シート、及びこれらの製造方法は、意匠性を必要とするような、橋梁、ガードレール、表示板などの大型構造物、ドアや壁などの建築物の構成品、或いは車、家具、携帯電話などの物品の産業に利用可能であり、特にこれらの構造物、構成品、物品の曲がった部分等に意匠性のある画像を表示するのに好適である。 The inorganic EL light emitting device, resin molded product, transfer sheet, and manufacturing method thereof according to the present invention require large design such as bridges, guard rails, display boards, and other large structures, and buildings such as doors and walls. Can be used in the industry of articles such as cars, furniture, mobile phones, etc., and is particularly suitable for displaying images with design properties on bent parts of these structures, components, articles, etc. is there.
１１…前面透明絶縁層
１２…透明電極
１３…無機蛍光体層
１４…補助前面電極
１５…誘電体層
１５ａ…第１の誘電体層
１５ｂ…第２の誘電体層
１５ｏ…第１の誘電体層
１５ｐ…第２の誘電体層
１５ｑ…第３の誘電体層
１５ｒ…第１の誘電体層
１５ｓ…第２の誘電体層
１５ｔ…第３の誘電体層
１５ｕ…第４の誘電体層
１６…背面保護絶縁層
１７…裏面電極
１８…接着層
１９…樹脂成形部
１９Ｐ…溶融した成形樹脂
２１…マイグレーション防止層
３１，３２，３３…色層
４１…基板
４２…剥離層
５１…成形金型
５２…樹脂注入パイプ
６１ａ，６１ｂ…ボイド
DESCRIPTION OF SYMBOLS 11 ... Front transparent insulating layer 12 ... Transparent electrode 13 ... Inorganic fluorescent substance layer 14 ... Auxiliary front electrode 15 ... Dielectric layer 15a ... 1st dielectric layer 15b ... 2nd dielectric layer 15o ... 1st dielectric layer 15p ... 2nd dielectric layer 15q ... 3rd dielectric layer 15r ... 1st dielectric layer 15s ... 2nd dielectric layer 15t ... 3rd dielectric layer 15u ... 4th dielectric layer 16 ... Back surface protective insulating layer 17 ... Back electrode 18 ... Adhesive layer 19 ... Resin molding part 19P ... Molten molding resin 21 ... Migration prevention layer 31, 32, 33 ... Color layer 41 ... Substrate 42 ... Release layer 51 ... Mold 52 ... Resin injection pipe 61a, 61b ... Void
Claims (28)
該色印刷層を透過する光を出射し、前記複数の色層により前記表示パターンの画像を表示させる無機蛍光体層と、
前記光を出射させるために、前記無機蛍光体層を発光させる電界を、前記無機蛍光体層に印加する電界印加手段
とを備えることを特徴とする無機ＥＬ発光素子。 A color print layer in which a display pattern is formed by a plurality of color layers;
An inorganic phosphor layer that emits light that passes through the color print layer and displays an image of the display pattern by the plurality of color layers;
An inorganic EL light-emitting element, comprising: an electric field applying unit that applies an electric field that causes the inorganic phosphor layer to emit light to the inorganic phosphor layer in order to emit the light.
少なくとも一部が、前記無機蛍光体層の前面に接するように、前記無機蛍光体層の前面に設けられた導電性高分子膜からなる透明電極と、
前記無機蛍光体層の背面に接して設けられた誘電体層と、
前記誘電体層の背面側に設けられ、前記誘電体層を介して前記透明電極との間に前記電界を形成する背面電極
とを備えることを特徴とする請求項１に記載の無機ＥＬ発光素子。 The electric field applying means is
A transparent electrode made of a conductive polymer film provided on the front surface of the inorganic phosphor layer so that at least a portion thereof is in contact with the front surface of the inorganic phosphor layer;
A dielectric layer provided in contact with the back surface of the inorganic phosphor layer;
The inorganic EL light emitting element according to claim 1, further comprising: a back electrode provided on a back side of the dielectric layer and forming the electric field between the transparent layer and the transparent electrode. .
前記画像を表示させるように、前記発光体部を埋め込む樹脂成形部
とを備えることを特徴とする樹脂成形品。 A color print layer in which a display pattern is formed by a plurality of color layers, light that passes through the color print layer is emitted, an inorganic phosphor layer that displays an image of the display pattern by the plurality of color layers, and the light is emitted. For this purpose, a light emitting unit having an electric field applying means for applying an electric field for causing the inorganic phosphor layer to emit light to the inorganic phosphor layer;
A resin molded product comprising: a resin molded portion that embeds the light emitter portion so as to display the image.
少なくとも一部が、前記無機蛍光体層の前面に接するように、前記無機蛍光体層の前面に設けられた導電性高分子膜からなる透明電極と、
前記無機蛍光体層の背面に接して設けられた誘電体層と、
前記誘電体層の背面側に設けられ、前記誘電体層を介して前記透明電極との間に前記電界を形成する背面電極
とを備えることを特徴とする請求項７に記載の樹脂成形品。 The electric field applying means is
A transparent electrode made of a conductive polymer film provided on the front surface of the inorganic phosphor layer so that at least a portion thereof is in contact with the front surface of the inorganic phosphor layer;
A dielectric layer provided in contact with the back surface of the inorganic phosphor layer;
The resin molded product according to claim 7, further comprising: a back electrode provided on a back side of the dielectric layer and forming the electric field between the transparent layer and the transparent electrode.
該基板の上に設けられた剥離層と、
該剥離層の上部の一部に設けられ、複数の色層を含む色印刷層と、
前記基板の上方に設けられ、前記色印刷層を透過する光を出射し、前記複数の色層により画像を表示させる無機蛍光体層と、
前記基板の上方に設けられ、前記光を出射させるために、前記無機蛍光体層を発光させる電界を、前記無機蛍光体層に印加する電界印加手段
とを備えることを特徴とする転写シート。 A substrate,
A release layer provided on the substrate;
A color printing layer provided on a part of the upper portion of the release layer and including a plurality of color layers;
An inorganic phosphor layer that is provided above the substrate, emits light that passes through the color print layer, and displays an image with the plurality of color layers;
A transfer sheet, comprising: an electric field applying unit that is provided above the substrate and applies an electric field that emits light from the inorganic phosphor layer to the inorganic phosphor layer to emit the light.
少なくとも一部が、前記無機蛍光体層の前面に接するように、前記無機蛍光体層の前面に設けられた導電性高分子膜からなる透明電極と、
前記無機蛍光体層の背面に接して設けられた誘電体層と、
前記誘電体層の背面側に設けられ、前記誘電体層を介して前記透明電極との間に前記電界を形成する背面電極
とを備えることを特徴とする請求項１３に記載の転写シート。 The electric field applying means is
A transparent electrode made of a conductive polymer film provided on the front surface of the inorganic phosphor layer so that at least a portion thereof is in contact with the front surface of the inorganic phosphor layer;
A dielectric layer provided in contact with the back surface of the inorganic phosphor layer;
The transfer sheet according to claim 13, further comprising: a back electrode provided on a back side of the dielectric layer and forming the electric field between the transparent layer and the transparent electrode.
前記剥離層の上部の一部に、複数の色層を含む色印刷層を形成する工程と、
前記色印刷層の上方に、前記色印刷層を透過する光を出射し、前記複数の色層により画像を表示させる無機蛍光体層、及び前記光を出射させるために、前記無機蛍光体層を発光させる電界を、前記無機蛍光体層に印加する電界印加手段を形成する工程、
とを含むことを特徴とする転写シートの製造方法。 Forming a release layer on the substrate;
Forming a color print layer including a plurality of color layers on a part of the upper part of the release layer;
An inorganic phosphor layer that emits light that passes through the color print layer and displays an image by the plurality of color layers, and an inorganic phosphor layer that emits the light above the color print layer. Forming an electric field applying means for applying an electric field to be emitted to the inorganic phosphor layer;
A method for producing a transfer sheet, comprising:
前記色印刷層の上方に導電性高分子膜からなる透明電極を形成するステップと、
前記透明電極上に無機蛍光体層を形成するステップと、
前記無機蛍光体層上に誘電体層を形成するステップと、
前記誘電体層の上方に背面電極を形成するステップ、
とを含むことを特徴とする請求項１９に記載の転写シートの製造方法。 Forming the inorganic phosphor layer and the electric field applying means;
Forming a transparent electrode made of a conductive polymer film above the color print layer;
Forming an inorganic phosphor layer on the transparent electrode;
Forming a dielectric layer on the inorganic phosphor layer;
Forming a back electrode over the dielectric layer;
The method for producing a transfer sheet according to claim 19, comprising:
前記透明電極上の一部に、前記透明電極金属学的に接合した補助前面電極を形成するステップを更に含み、
該補助前面電極を形成するステップの後に、前記透明電極の残余の部分及び前記補助前面電極の上に、前記無機蛍光体層を形成することを特徴とする請求項２０に記載の転写シートの製造方法。 Forming the inorganic phosphor layer and the electric field applying means;
Forming a transparent electrode metallurgically joined auxiliary front electrode on a portion of the transparent electrode;
21. The manufacturing method of a transfer sheet according to claim 20, wherein after the step of forming the auxiliary front electrode, the inorganic phosphor layer is formed on the remaining portion of the transparent electrode and the auxiliary front electrode. Method.
該前面透明絶縁層を形成する工程の後に、前記無機蛍光体層及び前記電界印加手段を形成する工程を実施することを特徴とする請求項１９〜２１のいずれか１項に記載の転写シートの製造方法。 After the step of forming the color print layer, further comprising the step of forming a front transparent insulating layer on the color print layer,
The transfer sheet according to any one of claims 19 to 21, wherein a step of forming the inorganic phosphor layer and the electric field applying means is performed after the step of forming the front transparent insulating layer. Production method.
前記色印刷層に垂直方向から前記色印刷層を見た場合において、前記補助前面電極のパターンと前記背面電極の平面パターンが重ならないように、前記背面電極を形成することを特徴とする請求項２１に記載の転写シートの製造方法。 Forming the inorganic phosphor layer and the electric field applying means;
The back electrode is formed so that a pattern of the auxiliary front electrode and a planar pattern of the back electrode do not overlap when the color print layer is viewed from a direction perpendicular to the color print layer. 22. A method for producing a transfer sheet according to item 21.
前記凸部を成形金型の内部に導入し、前記成形金型を前記基板及び前記剥離層で閉じる段階と、
前記成形金型の内部に溶融した成形樹脂を導入し、前記成形金型と前記凸部との間の空隙を充填する段階と、
前記溶融した成形樹脂を冷却して固化することにより樹脂成形部を形成する段階と、
前記剥離層を介して前記基板と前記凸部とを分離し、固化した前記樹脂成形部の内部に前記凸部を埋め込む段階
とを含むことを特徴とする樹脂成形品の製造方法。 Forming a release layer on the substrate; forming a color print layer including a plurality of color layers on a part of an upper portion of the release layer; and placing the color print layer above the color print layer. An inorganic phosphor layer that emits transmitted light and displays an image by the plurality of color layers, and an electric field that emits light from the inorganic phosphor layer is applied to the inorganic phosphor layer in order to emit the light. Forming a transfer sheet having a convex portion provided with the color printing layer, the inorganic phosphor layer, and the electric field applying means on the release layer in a series of steps including a step of forming an electric field applying means,
Introducing the convex portion into a molding die, and closing the molding die with the substrate and the release layer;
Introducing a molten molding resin into the molding die and filling a gap between the molding die and the convex portion;
Forming a resin molded part by cooling and solidifying the molten molded resin;
A step of separating the substrate and the convex portion through the release layer and embedding the convex portion in the solidified resin molded portion.
前記色印刷層の上方に導電性高分子膜からなる透明電極を形成するステップと、
前記透明電極上に無機蛍光体層を形成するステップと、
前記無機蛍光体層上に誘電体層を形成するステップと、
前記誘電体層の上方に背面電極を形成するステップと、
とを含むことを特徴とする請求項２４に記載の樹脂成形品の製造方法。 Forming the inorganic phosphor layer and the electric field applying means;
Forming a transparent electrode made of a conductive polymer film above the color print layer;
Forming an inorganic phosphor layer on the transparent electrode;
Forming a dielectric layer on the inorganic phosphor layer;
Forming a back electrode above the dielectric layer;
The method for producing a resin molded product according to claim 24, comprising:
前記透明電極上の一部に、前記透明電極金属学的に接合した補助前面電極を形成するステップを更に含み、
該補助前面電極を形成するステップの後に、前記透明電極の残余の部分及び前記補助前面電極の上に、前記無機蛍光体層を形成することを特徴とする請求項２５に記載の樹脂成形品の製造方法。 Forming the inorganic phosphor layer and the electric field applying means;
Forming a transparent electrode metallurgically joined auxiliary front electrode on a portion of the transparent electrode;
The resin molded article according to claim 25, wherein the inorganic phosphor layer is formed on the remaining portion of the transparent electrode and the auxiliary front electrode after the step of forming the auxiliary front electrode. Production method.
該前面透明絶縁層を形成する工程の後に、前記無機蛍光体層及び前記電界印加手段を形成する工程を実施することを特徴とする請求項２５〜２６のいずれか１項に記載の樹脂成形品の製造方法。 After the step of forming the color print layer, further comprising the step of forming a front transparent insulating layer on the color print layer,
The resin molded article according to any one of claims 25 to 26, wherein the step of forming the inorganic phosphor layer and the electric field applying means is performed after the step of forming the front transparent insulating layer. Manufacturing method.
前記色印刷層に垂直方向から前記色印刷層を見た場合において、前記補助前面電極のパターンと前記背面電極の平面パターンが重ならないように、前記背面電極を形成することを特徴とする請求項２６に記載の樹脂成形品の製造方法。 Forming the inorganic phosphor layer and the electric field applying means;
The back electrode is formed so that a pattern of the auxiliary front electrode and a planar pattern of the back electrode do not overlap when the color print layer is viewed from a direction perpendicular to the color print layer. 27. A method for producing a resin molded product according to 26.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6482490A (en) * | 1987-09-25 | 1989-03-28 | Matsushita Electric Ind Co Ltd | El element |
| JPH08273828A (en) * | 1995-03-30 | 1996-10-18 | Seikosha Co Ltd | El type light emitting device |
| JP2003163083A (en) * | 2001-09-13 | 2003-06-06 | Nissha Printing Co Ltd | El emission decorative mold, manufacturing method therefor, and el emission decorative sheet |
| JP2004055440A (en) * | 2002-07-23 | 2004-02-19 | Seiko Precision Inc | Manufacturing method of el element |
| JP2009164068A (en) * | 2008-01-10 | 2009-07-23 | Seiko Epson Corp | Organic el panel, and manufacturing method thereof |
| JP2009259479A (en) * | 2008-04-14 | 2009-11-05 | Fujifilm Corp | Light-emitting system |
-
2010
- 2010-08-27 JP JP2010191142A patent/JP2012049034A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6482490A (en) * | 1987-09-25 | 1989-03-28 | Matsushita Electric Ind Co Ltd | El element |
| JPH08273828A (en) * | 1995-03-30 | 1996-10-18 | Seikosha Co Ltd | El type light emitting device |
| JP2003163083A (en) * | 2001-09-13 | 2003-06-06 | Nissha Printing Co Ltd | El emission decorative mold, manufacturing method therefor, and el emission decorative sheet |
| JP2004055440A (en) * | 2002-07-23 | 2004-02-19 | Seiko Precision Inc | Manufacturing method of el element |
| JP2009164068A (en) * | 2008-01-10 | 2009-07-23 | Seiko Epson Corp | Organic el panel, and manufacturing method thereof |
| JP2009259479A (en) * | 2008-04-14 | 2009-11-05 | Fujifilm Corp | Light-emitting system |
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