直銷samsung（三星）f480帶 ic 手機(jī)電容手寫屏（量大價(jià)優(yōu)）

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電阻觸摸屏的主體部分是一塊與顯示器表面配合非常好的電阻薄膜屏,這是一種多層的復(fù)合薄膜,由一層玻璃或有機(jī)玻璃作為基層,其表面涂有一層透明的導(dǎo)電層,上面再覆蓋一層外表給硬化處理,光滑防刮的塑料層.基層的內(nèi)表面有涂有一層透明導(dǎo)電層,在兩層導(dǎo)電層之間有許多細(xì)小(小于千分之一英寸)的透明隔離點(diǎn)把它們隔開絕緣.當(dāng)手指觸摸屏幕時(shí),平常絕緣的兩層導(dǎo)電層在觸摸點(diǎn)位置就有了一個(gè)接確,控制器偵測(cè)到這個(gè)接通后,其中一面導(dǎo)電層接通y軸方向的5v均勻電壓場(chǎng),另一導(dǎo)電層將接確點(diǎn)的電壓引到控制卡進(jìn)行a/d轉(zhuǎn)換,得到電壓值后與5v相比即可得觸摸點(diǎn)的y軸坐標(biāo),同理得出x軸坐標(biāo).

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  廣泛適用于各種電子產(chǎn)品

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