JP4490648B2 - Display board - Google Patents

Display board Download PDF

Info

Publication number
JP4490648B2
JP4490648B2 JP2003119133A JP2003119133A JP4490648B2 JP 4490648 B2 JP4490648 B2 JP 4490648B2 JP 2003119133 A JP2003119133 A JP 2003119133A JP 2003119133 A JP2003119133 A JP 2003119133A JP 4490648 B2 JP4490648 B2 JP 4490648B2
Authority
JP
Japan
Prior art keywords
white
coating layer
layer
display panel
display board
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2003119133A
Other languages
Japanese (ja)
Other versions
JP2004325199A (en
Inventor
泰彦 高山
元喜 伊藤
正昭 佐藤
山口  克行
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Citizen Holdings Co Ltd
Citizen Watch Co Ltd
Original Assignee
Citizen Holdings Co Ltd
Citizen Watch Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Citizen Holdings Co Ltd, Citizen Watch Co Ltd filed Critical Citizen Holdings Co Ltd
Priority to JP2003119133A priority Critical patent/JP4490648B2/en
Publication of JP2004325199A publication Critical patent/JP2004325199A/en
Application granted granted Critical
Publication of JP4490648B2 publication Critical patent/JP4490648B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Laminated Bodies (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は表示板に関するもので、特に、白色の地をなす表示板に関する。
【0002】
【従来の技術】
従来、時計用表示板において、白色の地をなす表示板が非常に多く使われる。白色の地の上に、金属的な指標を設けたり、各種の模様や装飾を施したり、などして使用している。表示板に白色の地を使うのは、表示板自体が明るく見えて、更に、その上に設けた指標や模様、装飾などが非常に引き立って、鮮明に見えることによる。また、時計用表示板に限らず各種計器類の表示板や各種の銘板などにも白色の地をなす表示板が非常に多く使われている。そして、鮮明な表示を得ることは表示板全体に共通して望むことである。以下、時計用表示板を例にとって説明するが、他の表示板にも同じように適用できるものである。
【0003】
時計用表示板を白色の地に仕立てるのに、従来は図6に示す構成を取っていた。図6は白色の地を示す従来の時計用表示板の要部断面図を示している。金属基板51に銀メッキなどを施して金属メッキ層52を形成し、その上にメラミン白塗装を施して白色塗膜54を形成して、地が白色となる表示板50を形成していた。また、場合によっては、白色塗膜54の上にクリア塗膜を設けることも行われていた。金属メッキとしては銀メッキやロジウムメッキなどが選択されていた。銀メッキやロジウムメッキを施すのは白色系の色調を持っており、反射率が高いと云う理由によるものである。また、メラミン白塗装は、メラミン樹脂に酸化チタン(TiO2 )を主成分とした白色顔料を混ぜ合わせた塗料又はインクで塗装方法や印刷方法で形成するものである。
【0004】
【発明が解決しようとする課題】
時計用の表示板は、白色表示板が大変好まれて非常に多く使用されている。その理由は上述した通りであるが、そのような状況下の中で、従来のメラミン白塗装は多少黄色味を帯びた色調をなしており、満足できる白さではなかった。また、明るさも不足して、高級品には不満足な白さとなっていた。時計用の表示板にとって、雪のように真白で、尚かつ明るさを持った白色文字板を作ることが非常に大きな課題となっていた。特に、光の透過性を要求されるソーラ時計用表示板には、真白で、明るさを持った白色文字板が強く要望されていた。
【0005】
【課題を解決するための手段】
本発明は上記課題に鑑みて成されたので、その目的とするところは、真白で、明るさを持った白色文字板を得ることにある。そして、この目的を達成する手段として、本発明の請求項1に記載の表示板は、基板の上面に、金属薄膜層、白色蛍光塗膜層、透明なメラミン樹脂に酸化チタンを主成分とした白色顔料を混ぜ合わせた白色塗膜層を順次積層し、各層はいずれも光透過性を備えており、白色塗膜層は光透過率が30から90%であることを特徴とするものである。
【0006】
また、本発明の請求項2に記載の表示板は、基板は、プラスチック製基板であることを特徴とするものである。
【0007】
また、本発明の請求項3に記載の表示板は、白色塗膜層の上面にクリヤー層を積層したことを特徴とするものである。
【0015】
【発明の実施の形態】
以下、図をもって本発明の実施の形態を説明する。図1は本発明の第1実施形態に係る表示板の要部断面図、図2は本発明の第2実施形態に係る表示板の要部断面図、図3は本発明の第3実施形態に係る表示板の要部断面図、図4は本発明の第4実施形態に係る表示板の要部断面図、図5は本発明の第5実施形態に係る表示板の要部断面図を示している。
【0016】
図1は本発明の第1実施形態に係る表示板を示している。本発明の表示板10Aは、基板11と、基板11の上面側に設けた金属薄膜層12と、白色蛍光塗膜層13と、白色塗膜層14とが順次積層した構成を取っている。基板11は金属板からなるもので、時計用表示板ではアルミ板、真鍮板、洋白板などが多く用いられるが、他の金属板でも良い。金属薄膜層12は光の反射率が高い金属の薄膜である。この金属薄膜層12は光反射を主目的にして設けるものであるが、他に基板11の防蝕役目も果たしている。従って、反射率の高い金属膜が用いられるが、湿式メッキや乾式メッキなどで形成した銀メッキ膜やロジウムメッキ膜などは最適に利用できる。この金属薄膜層12の膜厚は0.2〜2μm位に形成する。白色蛍光塗膜層13は白色蛍光剤が分散した塗膜の層である。白色蛍光剤には白色の蛍光染料が使われ、この白色蛍光染料を透明なエポキシ樹脂やアクリル樹脂などの樹脂に混ぜ合わせて塗料化、またはインク化し、塗装方法や印刷方法で形成する。この白色蛍光塗膜層13の膜厚は5〜20μm位に形成する。白色塗膜層14は白色顔料が分散した塗膜の層である。白色顔料を樹脂に混ぜ合わせて塗料化、またはインク化し、塗装方法や印刷方法で形成する。この白色塗膜層14は、従来例で述べた白色塗膜54と同じで、透明なメラミン樹脂に酸化チタン(TiO2)を主成分とした白色顔料を混ぜ合わせた塗料またはインクで塗装方法または印刷方法で形成する。
【0017】
上記の白色塗膜層14と白色蛍光塗膜層13は光の透過性を有している。白色塗膜層14は光透過率が30〜90%の範囲に設定している。
【0018】
メラミン樹脂に酸化チタン(TiO2)を主成分とした白色顔料を混ぜ合わせた白色塗膜は光が当たると黄色味を帯びた色調を呈する。また、白色蛍光剤を混ぜ合わせた白色蛍光塗膜に光が当たると青紫色を帯びた色調が現れる。白色塗膜と白色蛍光塗膜を積層して光を当てると白色の色調が現れてくる。これは、黄色と青紫色が補色関係にあるからと思われる。即ち、黄色と青紫色が混ざり合って白色が現れる。
【0019】
白色塗膜層14の透過率が90%を越えると、その下に設けてある白色蛍光塗膜層13が発する青紫色を帯びた色が強く現れてきて、純白さが欠けてくる。逆に、透過率が30%より少ないと、黄色味の色調が強く現れてきて、これも純白さにかけてくる。白色塗膜層14の光透過率が30〜90%の範囲が純白で真白い色が現れる範囲である。
【0020】
上記の構成を取る表示板10Aは、上面側から入射した光は、一部は白色塗膜層14から反射して外に放射され、一部は透過して白色蛍光塗膜層13に入射する。更に、白色蛍光塗膜層13に入射した光は、一部は白色蛍光塗膜層13から反射して白色塗膜層14を透過して外に放射され、一部は白色蛍光塗膜層13を透過して金属薄膜層12によって反射されて、再び白色蛍光塗膜層13と白色塗膜層14を透過して外に放射される。このとき、白色塗膜層14からの黄色味を帯びた光と白色蛍光塗膜層13からの青紫色を帯びた光が混ざり合って、真白な白色が現れてくる。
【0021】
また、白色蛍光塗膜層13の蛍光剤が明るく光を発するので、表示板全体が明るくなる。このように、上記の構成を取る表示板10Aは、明るくて真白な表示板となる。
【0022】
次に、図2に示すものは、本発明の第2実施形態に係る表示板を示している。この表示板10Bは、基板11と、基板11の上面側に設けた金属薄膜層12と、白色塗膜層14と、白色蛍光塗膜層23とが順次積層した構成を取っている。ここでの基板11、金属薄膜層12、白色塗膜層14は、図1で示した第1実施形態の表示板10Aのものと同じ仕様のものを使っている。
【0023】
上記の白色蛍光塗膜層23は、白色蛍光染料の外に紫外線吸収剤が分散した塗膜の層である。蛍光染料は紫外線によって劣化を起こす。この劣化防止のために紫外線吸収剤を混ぜ合わせる。紫外線吸収剤としては、2-(3,5-ジ-t-ブチル-2-ヒドロキシフェニル)ベンゾトリアゾール、2-(3-t-ブチル-5-メチル-2-ヒドロキシフェニル)-5-クロロベンゾトリアゾール、などが好適に選択できる。この紫外線吸収剤は、樹脂100重量部に対して0.5〜10重量部混ぜ合わせれば十分な紫外線効果を生む。
【0024】
また、この白色蛍光塗膜層23は光の透過性を有していて、白色塗膜層14と同じ位の透過率を持っている。
【0025】
上記の構成を取る表示板10Bは、上面側から入射した光は、一部は白色蛍光塗膜層23から反射して外に放射され、一部は透過して白色塗膜層14に入射する。更に、白色塗膜層14に入射した光は、一部は白色塗膜層14から反射して白色蛍光塗膜層23を透過して外に放射され、一部は白色塗膜層14を透過して金属薄膜層12によって反射されて、再び白色塗膜層14と白色蛍光塗膜層23を透過して外に放射される。このとき、白色蛍光塗膜層23からの青紫色を帯びた光と白色塗膜層14からの黄色味を帯びた光とが混ざり合って、真白な白色が現れてくる。
【0026】
また、白色蛍光塗膜層23の蛍光剤が明るく光を発するので、表示板全体が明るくなる。このように、上記の構成を取る表示板は、明るくて真白な表示板となる。また、表側に出た白色蛍光塗膜層23は紫外線に曝されるが、紫外線吸収剤によって蛍光剤が保護され、耐光性が継続的に維持される。
【0027】
次に、図3に示すものは、本発明の第3実施形態に係る表示板を示している。この表示板10Cは、基板11と、基板11の上面側に設けた金属薄膜層12と、白色塗膜層14と、白色蛍光塗膜層13と、クリヤー層15とが順次積層した構成を取っている。ここでの基板11、金属薄膜層12、白色塗膜層14、白色蛍光塗膜層13は、図1で示した第1実施形態の表示板10Aのものと同じ仕様のものを使っている。
【0028】
クリヤー層15は、透明なウレタン樹脂やアクリル樹脂などに紫外線吸収剤を混ぜ合わせて形成した透明な塗膜層である。紫外線吸収剤は前述した紫外線吸収剤が使われる。また、このクリヤー層15は、その表面は研磨によって平滑で光沢のある面に仕上げられている。光沢面になっていると表示板が非常に綺麗に見える。
【0029】
上記の構成を取る表示板10Cは、前述した第2実施形態の表示板10Bと同様に、明るくて真白な表示板となる。また、クリヤー層15に入れた紫外線吸収剤によって蛍光剤の劣化が防止されて耐光性の強い表示板となる。更にまた、光沢面を持った綺麗な表示板となる。
【0030】
尚、上記の表示板10Cは、基板11の上面に金属薄膜層12、白色塗膜層14、白色蛍光塗膜層13、クリヤー層15を順次積層した構成のものであるが、図1で示した第1実施形態の表示板10Aで説明したと同じように、基板11の上面に金属薄膜層12、白色蛍光塗膜層13、白色塗膜層14、クリヤー層15を順次積層した構成の表示板としても同じ効果を得ることができる。
【0031】
次に、図4に示すものは、本発明の第4実施形態に係る表示板を示している。この表示板10Dは、基板11と、基板11の上面側に設けた金属薄膜層12と、白色顔料と白色蛍光剤を混ざり合った混合塗膜層16と、クリヤー層15とが順次積層した構成を取っている。ここでの基板11、金属薄膜層12、クリヤー層15は、前述した第3実施形態のものと全く同じ仕様のものを使っている。
【0032】
上記の混合塗膜層16は、白色顔料と白色蛍光剤を樹脂に混ぜ合わせて塗料化又はインク化して、塗装方法または印刷方法で形成した塗膜層である。白色顔料は前述したものと同じで、酸化チタンを主成分としたものである。また、白色蛍光剤は白色蛍光染料を用いている。この白色顔料と白色蛍光染料を透明なエポキシ樹脂やアクリル樹脂などに混ぜ合わせて塗料化、或いはインク化して混合塗膜層16を形成する。
【0033】
上記の構成を取る表示板10Dでは、上面側から入射した光は、一部は混合塗膜層16から反射して外に放射され、一部は透過して金属薄膜層12によって反射されて、再び混合塗膜層16を透過して外に放射される。このとき、混合塗膜層16からの光は青紫色を帯びた光と黄色味を帯びた光との混ざり合った状態で放射されるので真白な白色が現れてくる。また、入射した光によって蛍光剤が発光するので明るくなる。従って、明るくて、真白な表示板が得られる。
【0034】
また、クリヤー層15に入れた紫外線吸収剤によって、混合塗膜層16の蛍光剤の劣化が防止されて耐光性の強い表示板となる。更にまた、光沢面を持った綺麗な表示板となる。
【0035】
次に、図5に示すものは、本発明の第5実施形態に係る表示板を示している。この表示板10Eは、基板11と、基板11の下面側に設けた白色蛍光塗膜層13と、白色塗膜層14とを積層した構成を取っている。ここでの白色蛍光塗膜層13と白色塗膜層14は前述した第1実施形態のものと全く同じ仕様のものを使っている。
【0036】
上記の基板11は、透明なポリカーボネイトからなるプラスチック板を用いていて、上面には凹凸のある装飾模様を設けている。また、白色蛍光塗膜層13及び白色塗膜層14も光透過性を有していて、表示板10E全体として20〜45%位の光透過率を持っている。この表示板10Eはソーラ時計用表示板として形成したものである。
【0037】
上記構成の表示板10Eも、白色蛍光塗膜層13と白色塗膜層14を設けているために、明るくて、真白な表示板が得られる。
【0038】
尚、上記構成の白色蛍光塗膜層13の中に紫外線吸収剤を分散させることも可能である。また、基板11の上面に紫外線吸収剤を分散させたクリヤー塗膜層を形成することも可能である。このようにすれば、白色蛍光塗膜層13の蛍光剤の劣化防止を施すことができる。
【0039】
また、上記表示板10Eは、基板11の下面に白色蛍光塗膜層13、白色塗膜層14とを順次積層した構成を取っているが、基板11の下面に白色塗膜層14、白色蛍光塗膜層13とを順次積層した構成を取った表示板であっても同じ効果を得る。
【0040】
また、上記構成の表示板10Eの最下面に、即ち、白色塗膜層14の下面に金属薄膜層を設けてソーラ時計用表示板にすることも可能である。この場合の金属薄膜層は透過性を有するもので、表示板全体として少なくとも20%の透過率を有していればソーラ時計用表示板として充分使用可能となる。金属薄膜層は、真空蒸着法によって白色塗膜層14の下面に所要の透過率が得られる銀蒸着膜を形成することによって形成することができる。銀蒸着膜は白色系を示していて金属感も現れることから、より白さも増して金属感の現れたソーラ時計用表示板が得られる。と同時に、ソーラセルの有する独特の濃紫色が見えなくなると云う効果も得られる。
【0041】
前述した第1実施形態〜第4実施形態の表示板10A〜10Dは、基板11に金属板を使用し、この金属板11の上面に反射率の高い金属薄膜層12を設けた構成のものになっている。この基板11は、金属板に代えて透明なプラスチック板やガラス板を使用することも可能である。表示板全体に透過性が必要ない場合には、プラスチック板やガラス板の上に銀蒸着などを厚く施して、金属薄膜層12にすることができる。このような構成を取っても同じ効果を得る。
【0042】
また、表示板全体に透過性を持たせて、ソーラ時計やエレクトロルミネッセンス時計の表示板として利用したい場合には、金属薄膜層12に光透過性を持たせれば良く、銀蒸着を薄く施して透過性を持たせ、全体的に少なくとも20%の透過率を確保すればソーラ時計用表示板、或いはエレクトロルミネッセンス時計用表示板として使用することが可能である。
【0043】
このような場合においても、真白さの度合いは多少薄くなるが、それでも金属板を用いたものと比較して、さほど遜色を感じられないものが得られる。蛍光剤の発光による明るさが大きく影響しているものと思われる。
【0044】
また、本実施形態では、金属薄膜層、白色塗膜層、白色蛍光塗膜層を順次積層した構成にしたが、これらの層の間に透明な層(塗膜層)を設けても同じ効果を生む。
【0045】
また、本実施形態では、クリヤー層に紫外線吸収剤を分散した構成のもの、白色蛍光塗膜層に紫外線吸収剤を分散した構成のものについて説明したが、それらの両方の層に紫外線吸収剤を分散した構成でも良い。また、白色塗膜層に紫外線吸収剤を分散することも可能である。白色蛍光塗膜層や、白色蛍光塗膜層の上部に設けられる層に紫外線吸収剤を分散すると、効果が良く現れる。
【0046】
以上詳細に説明したように、本発明の表示板は白色塗膜層と白色蛍光塗膜層の両方を設けているので、真白で明るい表示板が得られる。この真白さを地にして、その上に指標や模様などの装飾を施すと明るくて鮮明で綺麗な表示板が得られる。また、地が真白であるとそれにつれて高級感も現れてくる。
【0047】
本発明を説明するに当たって所々時計用表示板を挙げて説明したが、時計用表示板に限らず、各種計器類の表示板、各種の銘板などにも全く共通して適用できるものである。
【0048】
【発明の効果】
本発明によれば、地が真白で明るい表示板が得られる。また、耐光性の面でも優れた表示板が得られる。また、真白いことによって高級感も現れてくる。
【図面の簡単な説明】
【図1】本発明の第1実施形態に係る表示板の要部断面図である。
【図2】本発明の第2実施形態に係る表示板の要部断面図である。
【図3】本発明の第3実施形態に係る表示板の要部断面図である。
【図4】本発明の第4実施形態に係る表示板の要部断面図である。
【図5】本発明の第5実施形態に係る表示板の要部断面図である。
【図6】白色の地を示す従来の時計用表示板の要部断面図である。
【符号の説明】
10A、10B、10C、10D、10E 表示板
11 基板
12 金属薄膜層
13、23 白色蛍光塗膜層
14 白色塗膜層
15 クリヤー層
16 混合塗膜層
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a display panel, and more particularly to a display panel that forms a white ground.
[0002]
[Prior art]
Conventionally, a display panel having a white background is used very often in a clock display panel. They are used on a white ground with metallic indicators and various patterns and decorations. The reason why the white background is used for the display board is that the display board itself looks bright, and the indicators, patterns, decorations, etc. provided on the display board stand out very clearly. In addition, not only clock display boards but also display boards having a white background are used for display boards of various instruments and various nameplates. To obtain a clear display is a common desire for the entire display board. In the following description, the timepiece display board will be described as an example, but the invention can be applied to other display boards in the same manner.
[0003]
Conventionally, the configuration shown in FIG. 6 has been used to tailor the watch display board to a white background. FIG. 6 shows a cross-sectional view of a main part of a conventional timepiece display board showing a white ground. The metal substrate 51 is subjected to silver plating or the like to form the metal plating layer 52, and then the melamine white coating is applied thereon to form the white coating film 54, thereby forming the display board 50 in which the ground is white. Moreover, depending on the case, providing the clear coating film on the white coating film 54 was also performed. Silver plating or rhodium plating was selected as the metal plating. The reason why silver plating or rhodium plating is applied is that it has a white color tone and has a high reflectance. Also, melamine white coating is made of melamine resin with titanium oxide (TiO 2 ) With a paint or ink mixed with a white pigment containing as a main component by a coating method or a printing method.
[0004]
[Problems to be solved by the invention]
As a display panel for a watch, a white display panel is very favored and used very often. The reason for this is as described above. Under such circumstances, the conventional melamine white coating has a slightly yellowish color tone and is not satisfactory white. Also, the brightness was insufficient, and the white color was unsatisfactory for luxury products. For a clock display board, it has been a very big problem to make a white dial that is pure white like snow and yet has brightness. In particular, there is a strong demand for a white dial plate that is pure white and bright for solar watch display plates that require light transmission.
[0005]
[Means for Solving the Problems]
The invention therefore also been made in view of the above problems, and has as its object a white, is to obtain a white dial with a brightness. As a means for achieving this object, the display panel according to claim 1 of the present invention is mainly composed of a metal thin film layer, a white fluorescent coating layer, a transparent melamine resin, and titanium oxide on the upper surface of the substrate . A white coating layer mixed with a white pigment is sequentially laminated, and each layer is provided with light transmittance, and the white coating layer has a light transmittance of 30 to 90%. .
[0006]
The display board according to claim 2 of the present invention is characterized in that the substrate is a plastic substrate.
[0007]
The display panel according to claim 3 of the present invention is characterized in that a clear layer is laminated on the upper surface of the white coating film layer.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a cross-sectional view of a main part of a display panel according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of a main part of a display panel according to a second embodiment of the present invention, and FIG. 3 is a third embodiment of the present invention. FIG. 4 is a cross-sectional view of main parts of a display panel according to a fourth embodiment of the present invention, and FIG. 5 is a cross-sectional view of main parts of a display panel according to a fifth embodiment of the present invention. Show.
[0016]
FIG. 1 shows a display panel according to a first embodiment of the present invention. The display panel 10A of the present invention has a configuration in which a substrate 11, a metal thin film layer 12 provided on the upper surface side of the substrate 11, a white fluorescent coating layer 13, and a white coating layer 14 are sequentially laminated. The substrate 11 is made of a metal plate, and an aluminum plate, a brass plate, a white plate, or the like is often used for the timepiece display plate, but other metal plates may be used. The metal thin film layer 12 is a metal thin film having a high light reflectance. The metal thin film layer 12 is provided mainly for light reflection, but also plays a role in preventing corrosion of the substrate 11. Therefore, although a metal film having a high reflectance is used, a silver plating film or a rhodium plating film formed by wet plating or dry plating can be optimally used. The metal thin film layer 12 is formed to a thickness of about 0.2 to 2 μm. The white fluorescent coating layer 13 is a coating layer in which a white fluorescent agent is dispersed. A white fluorescent dye is used as the white fluorescent agent, and the white fluorescent dye is mixed with a resin such as a transparent epoxy resin or acrylic resin to form a paint or ink, which is then formed by a coating method or a printing method. The film thickness of the white fluorescent coating layer 13 is formed at about 5 to 20 μm. The white coating layer 14 is a coating layer in which a white pigment is dispersed. A white pigment is mixed with a resin to form a paint or ink, and then formed by a painting method or a printing method. This white coating film layer 14 is the same as the white coating film 54 described in the conventional example, and is applied by a coating method or ink using a transparent melamine resin mixed with a white pigment mainly composed of titanium oxide (TiO 2 ). It is formed by a printing method.
[0017]
The white coating film layer 14 and the white fluorescent coating film layer 13 have light transmittance. The white coating film layer 14 has a light transmittance of 30 to 90%.
[0018]
A white coating film obtained by mixing a melamine resin with a white pigment mainly composed of titanium oxide (TiO 2 ) exhibits a yellowish color tone when exposed to light. Moreover, when light strikes a white fluorescent coating film mixed with a white fluorescent agent, a blue-purple color tone appears. When a white coating and a white fluorescent coating are laminated and exposed to light, a white color appears. This seems to be because yellow and blue-violet are complementary. That is, yellow and blue-violet are mixed and white appears.
[0019]
When the transmittance of the white coating layer 14 exceeds 90%, a blue-purple color emitted from the white fluorescent coating layer 13 provided thereunder appears strongly and the pure white is lacking. On the other hand, when the transmittance is less than 30%, a yellowish color tone appears strongly, which also becomes pure white. The range in which the light transmittance of the white coating layer 14 is 30 to 90% is a range in which pure white and a pure white color appear.
[0020]
In the display panel 10 </ b> A having the above-described configuration, a part of the light incident from the upper surface side is reflected from the white coating layer 14 and emitted to the outside, and a part of the light is transmitted and enters the white fluorescent coating layer 13. . Further, a part of the light incident on the white fluorescent coating layer 13 is reflected from the white fluorescent coating layer 13, is transmitted through the white coating layer 14, and a part thereof is emitted. And is reflected by the metal thin film layer 12, and again passes through the white fluorescent coating layer 13 and the white coating layer 14 to be emitted to the outside. At this time, the yellowish light from the white coating layer 14 and the bluish-purple light from the white fluorescent coating layer 13 are mixed and a pure white color appears.
[0021]
Moreover, since the fluorescent agent of the white fluorescent coating layer 13 emits bright light, the entire display panel becomes bright. Thus, the display board 10A having the above configuration is a bright and pure white display board.
[0022]
Next, what is shown in FIG. 2 shows a display panel according to a second embodiment of the present invention. The display board 10B has a configuration in which a substrate 11, a metal thin film layer 12 provided on the upper surface side of the substrate 11, a white coating film layer 14, and a white fluorescent coating layer 23 are sequentially laminated. The board | substrate 11, the metal thin film layer 12, and the white coating film layer 14 here use the thing of the same specification as the thing of the display board 10A of 1st Embodiment shown in FIG.
[0023]
The white fluorescent coating layer 23 is a coating layer in which an ultraviolet absorber is dispersed in addition to a white fluorescent dye. Fluorescent dyes are deteriorated by ultraviolet rays. In order to prevent this deterioration, a UV absorber is mixed. UV absorbers include 2- (3,5-di-t-butyl-2-hydroxyphenyl) benzotriazole, 2- (3-t-butyl-5-methyl-2-hydroxyphenyl) -5-chlorobenzo Triazole, etc. can be suitably selected. This ultraviolet absorber produces a sufficient ultraviolet effect when mixed in an amount of 0.5 to 10 parts by weight with respect to 100 parts by weight of the resin.
[0024]
The white fluorescent coating layer 23 is light transmissive and has the same transmittance as the white coating layer 14.
[0025]
In the display panel 10B having the above-described configuration, a part of the light incident from the upper surface side is reflected from the white fluorescent coating layer 23 and radiated to the outside, and a part of the light is transmitted and incident on the white coating layer 14. . Further, a part of the light incident on the white coating layer 14 is reflected from the white coating layer 14 and transmitted through the white fluorescent coating layer 23, and a part of the light passes through the white coating layer 14. Then, the light is reflected by the metal thin film layer 12 and is transmitted through the white coating film layer 14 and the white fluorescent coating film layer 23 again to be emitted outside. At this time, the bluish-purple light from the white fluorescent coating layer 23 and the yellowish light from the white coating layer 14 are mixed and a pure white color appears.
[0026]
Moreover, since the fluorescent agent of the white fluorescent coating layer 23 emits bright light, the entire display panel becomes bright. As described above, the display board having the above configuration is a bright and pure white display board. Moreover, although the white fluorescent coating layer 23 which came out to the front side is exposed to an ultraviolet-ray, a fluorescent agent is protected by a ultraviolet absorber and light resistance is maintained continuously.
[0027]
Next, what is shown in FIG. 3 shows a display panel according to a third embodiment of the present invention. The display panel 10C has a configuration in which a substrate 11, a metal thin film layer 12 provided on the upper surface side of the substrate 11, a white coating layer 14, a white fluorescent coating layer 13, and a clear layer 15 are sequentially laminated. ing. The board | substrate 11, the metal thin film layer 12, the white coating film layer 14, and the white fluorescent coating film layer 13 here use the thing of the same specification as the display board 10A of 1st Embodiment shown in FIG.
[0028]
The clear layer 15 is a transparent coating layer formed by mixing an ultraviolet absorber with a transparent urethane resin or acrylic resin. The ultraviolet absorber described above is used as the ultraviolet absorber. The clear layer 15 has a smooth and glossy surface by polishing. If it is glossy, the display board looks very beautiful.
[0029]
The display board 10C having the above configuration is a bright and pure white display board, like the display board 10B of the second embodiment described above. In addition, the ultraviolet absorber contained in the clear layer 15 prevents the fluorescent agent from being deteriorated, resulting in a display panel with high light resistance. Furthermore, it becomes a beautiful display board with a glossy surface.
[0030]
The display panel 10C has a structure in which a metal thin film layer 12, a white coating film layer 14, a white fluorescent coating film layer 13, and a clear layer 15 are sequentially laminated on the upper surface of the substrate 11, as shown in FIG. In the same manner as described for the display board 10A of the first embodiment, a display having a configuration in which the metal thin film layer 12, the white fluorescent coating layer 13, the white coating layer 14, and the clear layer 15 are sequentially laminated on the upper surface of the substrate 11. The same effect can be obtained as a plate.
[0031]
Next, what is shown in FIG. 4 has shown the display board which concerns on 4th Embodiment of this invention. The display panel 10D has a configuration in which a substrate 11, a metal thin film layer 12 provided on the upper surface side of the substrate 11, a mixed coating layer 16 in which a white pigment and a white fluorescent agent are mixed, and a clear layer 15 are sequentially laminated. Is taking. The substrate 11, the metal thin film layer 12, and the clear layer 15 used here have exactly the same specifications as those of the third embodiment described above.
[0032]
The mixed coating layer 16 is a coating layer formed by a coating method or a printing method by mixing a white pigment and a white fluorescent agent with a resin to form a paint or ink. The white pigment is the same as described above, and is mainly composed of titanium oxide. The white fluorescent agent uses a white fluorescent dye. The white pigment and white fluorescent dye are mixed with a transparent epoxy resin or acrylic resin to form a paint or ink to form the mixed coating layer 16.
[0033]
In the display panel 10D having the above-described configuration, part of the light incident from the upper surface side is reflected from the mixed coating layer 16 and radiated to the outside, and part of the light is transmitted and reflected by the metal thin film layer 12. The light passes through the mixed coating layer 16 again and is emitted outside. At this time, the light from the mixed coating layer 16 is emitted in a mixed state of light with a blue-purple color and light with a yellowish color, so that a pure white color appears. Further, since the fluorescent agent emits light by the incident light, it becomes brighter. Therefore, a bright and pure white display board can be obtained.
[0034]
In addition, the ultraviolet absorber contained in the clear layer 15 prevents the fluorescent agent in the mixed coating layer 16 from being deteriorated, resulting in a display panel with high light resistance. Furthermore, it becomes a beautiful display board with a glossy surface.
[0035]
Next, what is shown in FIG. 5 has shown the display board which concerns on 5th Embodiment of this invention. This display board 10E has a configuration in which a substrate 11, a white fluorescent coating layer 13 provided on the lower surface side of the substrate 11, and a white coating layer 14 are laminated. The white fluorescent coating layer 13 and the white coating layer 14 used here have exactly the same specifications as those of the first embodiment.
[0036]
The substrate 11 uses a plastic plate made of transparent polycarbonate, and has an uneven decorative pattern on the upper surface. Further, the white fluorescent coating layer 13 and the white coating layer 14 also have light transmittance, and the display panel 10E as a whole has a light transmittance of about 20 to 45%. The display board 10E is formed as a solar clock display board.
[0037]
Since the display panel 10E having the above configuration is also provided with the white fluorescent coating layer 13 and the white coating layer 14, a bright and pure white display panel can be obtained.
[0038]
In addition, it is also possible to disperse | distribute a ultraviolet absorber in the white fluorescent coating film layer 13 of the said structure. It is also possible to form a clear coating layer in which an ultraviolet absorber is dispersed on the upper surface of the substrate 11. In this way, deterioration of the fluorescent agent of the white fluorescent coating layer 13 can be prevented.
[0039]
The display board 10E has a configuration in which a white fluorescent coating layer 13 and a white coating layer 14 are sequentially laminated on the lower surface of the substrate 11, but the white coating layer 14 and the white fluorescent layer 14 are formed on the lower surface of the substrate 11. The same effect can be obtained even with a display panel having a structure in which the coating layer 13 is sequentially laminated.
[0040]
It is also possible to provide a solar watch display plate by providing a metal thin film layer on the lowermost surface of the display plate 10E having the above configuration, that is, on the lower surface of the white coating film layer 14. In this case, the metal thin film layer is transmissive, and if it has a transmittance of at least 20% as a whole display panel, it can be sufficiently used as a display panel for a solar watch. The metal thin film layer can be formed by forming a silver deposited film that provides a required transmittance on the lower surface of the white coating layer 14 by vacuum deposition. Since the silver deposited film shows a white system and a metallic feeling also appears, a white display panel for a solar watch with a metallic feeling that is further increased in whiteness can be obtained. At the same time, an effect that the unique dark purple color of the solar cell disappears can be obtained.
[0041]
The display plates 10A to 10D of the first to fourth embodiments described above have a configuration in which a metal plate is used for the substrate 11, and a metal thin film layer 12 having a high reflectance is provided on the upper surface of the metal plate 11. It has become. The substrate 11 can be a transparent plastic plate or glass plate instead of a metal plate. When the entire display panel does not require transparency, the metal thin film layer 12 can be formed by thickly depositing silver or the like on a plastic plate or glass plate. Even if it takes such a structure, the same effect is acquired.
[0042]
Further, when it is desired to provide transparency to the entire display plate and use it as a display plate of a solar watch or an electroluminescence watch, the metal thin film layer 12 may be provided with light transparency, and silver vapor deposition is thinly applied. Therefore, if a transmittance of at least 20% is ensured as a whole, it can be used as a display plate for a solar watch or a display plate for an electroluminescence watch.
[0043]
Even in such a case, the degree of whiteness is slightly reduced, but still it is possible to obtain a material that does not feel so faint as compared to the one using a metal plate. It seems that the brightness by the light emission of the fluorescent agent has a great influence.
[0044]
Moreover, in this embodiment, it was set as the structure which laminated | stacked the metal thin film layer, the white coating film layer, and the white fluorescent coating layer one by one, However, Even if it provides a transparent layer (coating layer) between these layers, it is the same effect. Give birth.
[0045]
Further, in the present embodiment, the configuration in which the ultraviolet absorber is dispersed in the clear layer and the configuration in which the ultraviolet absorber is dispersed in the white fluorescent coating layer have been described, but the ultraviolet absorber is added to both layers. A distributed configuration may be used. It is also possible to disperse the ultraviolet absorber in the white coating layer. When the ultraviolet absorber is dispersed in the white fluorescent coating layer or the layer provided on the white fluorescent coating layer, the effect is well exhibited.
[0046]
As described above in detail, since the display panel of the present invention is provided with both the white coating film layer and the white fluorescent coating film layer, a pure white and bright display panel can be obtained. With this whiteness as the ground, and decorations such as indicators and patterns on it, a bright, clear and beautiful display board can be obtained. In addition, if the ground is pure white, a sense of quality will appear.
[0047]
In the description of the present invention, the clock display board has been described in some places. However, the present invention is not limited to the clock display board but can be applied in common to various instrument display boards, various nameplates, and the like.
[0048]
【The invention's effect】
According to the present invention, a bright display board with a pure white background can be obtained. In addition, a display panel excellent in light resistance can be obtained. In addition, the whiteness also gives a sense of luxury.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a main part of a display panel according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view of a main part of a display panel according to a second embodiment of the present invention.
FIG. 3 is a cross-sectional view of a main part of a display panel according to a third embodiment of the present invention.
FIG. 4 is a cross-sectional view of main parts of a display panel according to a fourth embodiment of the present invention.
FIG. 5 is a cross-sectional view of a main part of a display panel according to a fifth embodiment of the present invention.
FIG. 6 is a cross-sectional view of a main part of a conventional timepiece display board showing a white ground.
[Explanation of symbols]
10A, 10B, 10C, 10D, 10E Display board 11 Substrate 12 Metal thin film layer 13, 23 White fluorescent coating layer 14 White coating layer 15 Clear layer 16 Mixed coating layer

Claims (3)

基板の上面に、金属薄膜層、白色蛍光塗膜層、透明なメラミン樹脂に酸化チタンを主成分とした白色顔料を混ぜ合わせた白色塗膜層を順次積層し、前記の各層はいずれも光透過性を備えており、前記白色塗膜層は光透過率が30から90%であることを特徴とする表示板。A thin metal film layer, a white fluorescent coating layer, and a white coating layer composed of a transparent melamine resin and a white pigment based on titanium oxide are sequentially laminated on the top surface of the substrate. A display panel, wherein the white coating layer has a light transmittance of 30 to 90%. 前記基板は、プラスチック製基板であることを特徴とする請求項1に記載の表示板。  The display board according to claim 1, wherein the substrate is a plastic substrate. 前記白色塗膜層の上面にクリヤー層を積層したことを特徴とする請求項1に記載の表示板。  The display panel according to claim 1, wherein a clear layer is laminated on an upper surface of the white coating film layer.
JP2003119133A 2003-04-23 2003-04-23 Display board Expired - Fee Related JP4490648B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003119133A JP4490648B2 (en) 2003-04-23 2003-04-23 Display board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003119133A JP4490648B2 (en) 2003-04-23 2003-04-23 Display board

Publications (2)

Publication Number Publication Date
JP2004325199A JP2004325199A (en) 2004-11-18
JP4490648B2 true JP4490648B2 (en) 2010-06-30

Family

ID=33498439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003119133A Expired - Fee Related JP4490648B2 (en) 2003-04-23 2003-04-23 Display board

Country Status (1)

Country Link
JP (1) JP4490648B2 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5998419U (en) * 1982-12-21 1984-07-03 スタンレー電気株式会社 Composite transmissive reflector
JPH05223956A (en) * 1992-02-07 1993-09-03 Kawaguchiko Seimitsu Kk Display plate for timepiece
JPH06118180A (en) * 1992-10-06 1994-04-28 Kansei Corp Time piece
JPH0954170A (en) * 1995-08-18 1997-02-25 Nemoto Tokushu Kagaku Kk Display panel for solar clock
JPH10160861A (en) * 1996-12-02 1998-06-19 Citizen Watch Co Ltd Dial plate for timepiece
JPH11281765A (en) * 1998-03-30 1999-10-15 Seiko Epson Corp Ornamental member, time piece provided therewith and production method therefor
JP2001235558A (en) * 2000-02-21 2001-08-31 Kawaguchiko Seimitsu Co Ltd Transfer image formed parts and forming method
JP2002162480A (en) * 2000-11-28 2002-06-07 Kawaguchiko Seimitsu Co Ltd Timepiece dial

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5998419U (en) * 1982-12-21 1984-07-03 スタンレー電気株式会社 Composite transmissive reflector
JPH05223956A (en) * 1992-02-07 1993-09-03 Kawaguchiko Seimitsu Kk Display plate for timepiece
JPH06118180A (en) * 1992-10-06 1994-04-28 Kansei Corp Time piece
JPH0954170A (en) * 1995-08-18 1997-02-25 Nemoto Tokushu Kagaku Kk Display panel for solar clock
JPH10160861A (en) * 1996-12-02 1998-06-19 Citizen Watch Co Ltd Dial plate for timepiece
JPH11281765A (en) * 1998-03-30 1999-10-15 Seiko Epson Corp Ornamental member, time piece provided therewith and production method therefor
JP2001235558A (en) * 2000-02-21 2001-08-31 Kawaguchiko Seimitsu Co Ltd Transfer image formed parts and forming method
JP2002162480A (en) * 2000-11-28 2002-06-07 Kawaguchiko Seimitsu Co Ltd Timepiece dial

Also Published As

Publication number Publication date
JP2004325199A (en) 2004-11-18

Similar Documents

Publication Publication Date Title
KR101158821B1 (en) Infrared-transmitting cover
CN111989216B (en) Functional membrane, glass plate and terminal
TR200100288T2 (en) Optically variable pigments that provide a color change between two separate colors, the coating composition containing them, and the method for producing the coating composition and the coated substrate.
KR101590602B1 (en) Decorative sheet
CN103660686B (en) Have and additional face the/optically variable security element of transparent effect
CN108382043A (en) Plank and preparation method thereof, shell, electronic equipment
CN110073254A (en) Transparent substrate and display device with lightproof area
JP4636892B2 (en) Watch panel structure
US20090250568A1 (en) Glass plate and television stand
US11988994B2 (en) Horological component
CN111338199B (en) Clock dial
JP4490648B2 (en) Display board
JP4139662B2 (en) Light transmissive electromagnetic wave shielding sheet and manufacturing method thereof
CN101631692B (en) Low glare mirror plate and rear-view mirror with this type of mirror plate
JP2012226163A (en) Decorative film, front panel, display device, and method for manufacturing front panel
JP2004322426A (en) Display board
CN112339471B (en) Optical anti-counterfeiting element and optical anti-counterfeiting product
JP3476251B2 (en) Solar cell device
KR102503461B1 (en) Design Pattern Color Mirror and Manufacturing Method of thereof
KR101289505B1 (en) Adhesive Sheet For Sign Materials And Manufacturing Method Thereof
JP3660237B2 (en) Clock dial
WO2023110058A1 (en) Optically and optionally electromagnetically semi-transparent optimized coated component
JP2024080477A (en) Printed and Display Devices
CN109203823A (en) A kind of color microstructures grain decorating panel
CN112639031A (en) Display device and its manufacture and use

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060328

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20090422

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090427

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090625

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091016

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20091126

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100326

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100402

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130409

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4490648

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130409

Year of fee payment: 3

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313115

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130409

Year of fee payment: 3

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150409

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313117

R360 Written notification for declining of transfer of rights

Free format text: JAPANESE INTERMEDIATE CODE: R360

R360 Written notification for declining of transfer of rights

Free format text: JAPANESE INTERMEDIATE CODE: R360

R371 Transfer withdrawn

Free format text: JAPANESE INTERMEDIATE CODE: R371

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313117

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees