JPH01144897A - Manufacture of print speaker - Google Patents

Abstract

PURPOSE:To allow a speaker to cope with multikind small scale production by printing or applying ink made by mixing a binder to powder of PZT(lead zirconium titanate) onto a comb-line circuit with a minute pitch so as to cover it and curing thermally the PZT ink through the application of a DC voltage to the circuit. CONSTITUTION:The comb-line circuit with a minute pitch is formed on a thin film 1 made of a material such as polyester by etching or conductive ink, and then the PZT ink 4 made by mixing the PZT powder with a binder member such as a polyester resin is printed or applied onto the circuit except electrodes 2, 3 at both ends. Then, the PZT ink 4 is cured thermally while applying a DC voltage between the electrodes 2, 3 to manufacture the speaker by polarizing the fluid PZT particles efficiently. The speaker causes sound with an electric signal given thereto. Moreover, a layer 5 made of an UV(ultraviolet) insulation ink or the like is interposed inbetween through multi-layer print, then the speaker whose sound pressure level is increased is obtained. Thus, multikind small scale production is attained.

Description

Translated fromJapanese

【発明の詳細な説明】［産業上の利用分野］本発明は、エレクトロニクス機器に於いて、キー人力操
作を行うスイッチの感音及び薄形の音響製品のスピーカ
ー等に用いる印刷セラミックスビーカー若しくはマイク
ロホンの製法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to printed ceramic beakers or microphones used in electronic equipment, such as sound sensors for switches for manual key operation, and speakers for thin acoustic products. It is related to the manufacturing method.

［従来の技術］従来セラミックスビーカーは、ＰＺＴを薄くスライスし
、それを音響板（補強板）に貼り合せている。[Prior Art] Conventionally, ceramic beakers are made by thinly slicing PZT and bonding it to an acoustic plate (reinforcing plate).

［発明が解決しようとする問題点コ従来の製法だと製造に於いて高度な技術及び機械を必要
とする。又製品形状によって金型を製作しなければなら
ないのでコストが高く、また、多品種少量生産には不向
きである。[Problems to be solved by the invention: Conventional manufacturing methods require advanced technology and machinery. Furthermore, since a mold must be manufactured depending on the shape of the product, the cost is high and it is not suitable for high-mix, low-volume production.

［問題点を解決するための手段］そこで本発明は、薄いポリエステルシート等のフィルム
にエツチング又は導電性インクにより形成された微細ピ
ッチのクシ目状の回路の上に、ＰＺＴ（チタン酸ジルコ
ニウム鉛）の粉末にバインダーを混ぜて作ったインクを
印刷又は塗布してカバーし、この回路に直流電圧を掛は
前記ＰＺＴインクを熱硬化させる。[Means for Solving the Problems] Therefore, the present invention uses PZT (lead zirconium titanate) on a fine pitch comb-like circuit formed by etching or conductive ink on a film such as a thin polyester sheet. The PZT ink is printed or coated with an ink made by mixing a binder with the PZT powder, and a DC voltage is applied to this circuit to thermally cure the PZT ink.

このように本発明は、ＰＺＴをインクとして用いるので
、ポリエステル・フィルム等に簡単にスクリーン印刷で
き、多品種少量生産に対応できる。As described above, since the present invention uses PZT as an ink, it can be easily screen printed on polyester films, etc., and can be adapted to high-mix, low-volume production.

よってローコストの製品製造が可能となるとともに、直
流電圧を掛けなからＰＺＴインクを熱硬化させて行くこ
とで流動的なＰＺＴ粒子が効率良く分極化される。Therefore, it is possible to manufacture products at low cost, and by thermally curing the PZT ink without applying a DC voltage, the fluid PZT particles can be efficiently polarized.

［実施例］次に図面に示す実施例に従って説明する。[Example]Next, an explanation will be given according to an embodiment shown in the drawings.

まず薄いポリエステル等のフィルム１にエツチング又は
導電性インクにて微細ピッチのクシ目状の回路を形成し
、その後両端の電［！２．３を除き回路上を、ＰＺＴの
粉末をバインダー材、例えばポリエステル樹脂と混合し
てＰＺＴインク４とし印刷、又は塗布し、前記電極２，
３間に直流電圧を掛けながらＰＺＴインク４を熱硬化さ
せ、流動的なＰＺＴ粒子を効率良く分極させてスピーカ
ーを製作する。そしてこのスピーカーに電気信号を与え
ると音を発することになる。First, a comb-like circuit with a fine pitch is formed on a thin polyester film 1 by etching or with conductive ink, and then the electric circuits at both ends [! Except for 2.3, PZT powder is mixed with a binder material, such as polyester resin, and printed or coated as PZT ink 4, and the electrodes 2,
The PZT ink 4 is thermally cured while applying a direct current voltage between the inks 3 and 3, and the fluid PZT particles are efficiently polarized to produce a speaker. When an electrical signal is applied to this speaker, it emits sound.

まなこのようにして製作したスピーカーを第３図に示す
ように、さらに間にＵＶ（ウルトラバイオレット）絶縁
インク等の層５を介在させて多重印刷すれば音圧レベル
を増加させたスピーカーとすることができる。このスピ
ーカーは、逆に音声信号を与えることでマイクロホンと
して利用できることはもちろんである。As shown in Figure 3, the speaker manufactured in this manner can be multi-printed with a layer 5 of UV (ultra violet) insulating ink or the like interposed between the two layers to create a speaker with increased sound pressure level. Can be done. Of course, this speaker can also be used as a microphone by providing an audio signal.

［発明の効果］本発明製法によれば、印刷にて製作できるので簡単であ
り、多品種を少量生産するのに最適であり、コストも低
く製作でき、必要に応じて幾層にも積層して印刷すれば
、音圧レベルを増加させることができる。[Effects of the invention] According to the manufacturing method of the present invention, it is easy to manufacture as it can be manufactured by printing, it is optimal for producing a wide variety of products in small quantities, it can be manufactured at low cost, and it can be laminated in many layers as necessary. The sound pressure level can be increased by printing.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、クシ目電極を示す。第２図は、ＰＺＴインクにてカバーした状態を示す図。第３図は、積層する場合の図。１・・・・ポリエステルフィルム２・・・・電極　　３・・・・電極４・・・・ＰＺＴインク５・・・・ＵＶ絶縁インク等FIG. 1 shows a comb electrode.FIG. 2 is a diagram showing a state covered with PZT ink.FIG. 3 is a diagram showing the case of lamination.1...Polyester film2... Electrode 3... Electrode4...PZT ink5...UV insulation ink, etc.

Claims (1)

Translated fromJapanese

【特許請求の範囲】[Claims]薄いポリエステルシート等のフィルムエッチング又は、
導電性インクにより、微細ピッチのクシ目状の回路を形
成し両端の電極２、３を除き、この回路上にＰＺＴの粉
末をバインダーと混合して作ったＰＺＴインクにて印刷
又は塗布し、前記電極２、３間に直流電圧を掛けながら
ＰＺＴインクを熱硬化させ流動的なＰＺＴ粒子を効率よ
く分極させて行なう印刷スピーカー若しくはマイクロホ
ンの製法。Film etching of thin polyester sheets or
A comb-like circuit with a fine pitch is formed using conductive ink, electrodes 2 and 3 at both ends are removed, and PZT ink made by mixing PZT powder with a binder is printed or coated on this circuit, and the A method for manufacturing a printed speaker or microphone, in which PZT ink is thermally cured while applying a DC voltage between electrodes 2 and 3, and fluid PZT particles are efficiently polarized.