触摸屏
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觸控螢幕(英文:Touch panel ,Touchscreens,) 又稱為觸控面板，是個可接收觸頭（無論是手指或膠筆尖等）等輸入訊號的感應式液晶顯示裝置，當接觸了螢幕上的圖形按鈕時，螢幕上的觸覺反饋系統可根據預先編程的程式驅動各種連結裝置，可用以取代機械式的按鈕面板，並藉由液晶顯示畫面製造出生動的影音效果。 而簡單說是指種可觸控式的螢幕,通常是在半反射式液晶面板上覆蓋一層壓力板,其對壓力有高敏感度,當物體施壓於其上時會有電流訊號產生以定出壓力源位置,並可動態追蹤. 觸控螢幕的用途非常廣泛，從常見的PDA、提款機、到工業用的觸控電腦，因為觸控螢幕為親切且生動的人機介面。 依性能分為以下三種裝置：
[编辑] 電阻式螢幕A resistive touch panel is composed of several layers. The most important are two resistive layers separated by thin space. When some object touches this kind of touch panel, the layers are connected at certain point; the panel then electrically acts similar to two voltage dividers with connected outputs. When measuring press force, it is useful to add resistor dependent on force in this model -- between the dividers. A resistive touch panel can be made with either four or five wires. The positions of the conductive contacts in resistive layers differ depending on how many wires are used. When four wires are used, the contacts are placed on the left, right, top, and bottom sides. When five wires are used, the contacts are placed in the corners and on one plate. [编辑] 電容式螢幕A capacitive touch panel must be touched by hand or other conductive objects. Contact with a conductive object results in a capacitance change, which can be detected for example by a using an oscillator or a bridge circuit. [编辑] 波動式螢幕In a surface wave touch panel, an ultrasound wave travels on the surface and is absorbed by the touching object. [编辑] 紅外線式觸控屏The CarrollTouch infrared is made by a frame with photoreceptors and LEDs around the display.When you touch the display, the light will be blocked. So that one photoreceptor will receive nothing and the touched place would be located. It's more accurate and stable. Above all, it's the best touchscreen for outdoor. [编辑] 空氣觸控螢幕它是將靜止或移動中的平面的影像投射在機器上方的空中，而可用手指加以操控這些影像(類似科幻片的投射影像)。空氣觸控螢幕屬於尚未量產之新產品。[1] [编辑] 應用裝置[编辑] 參考連結[编辑] 觸控螢幕製造商[编辑] 參考 |
