IBarcode Solutions Co.,LTD. is a leader among barcode scanner repair parts accessories for replacement suppliers. Our company concentrates on the development and production of barcode scanner accessories. Our main focus is creating the highest quality products. The main products are handheld computer accessories, barcode scanner accessories, barcode printer accessories. The basis of LCD screen technology is the liquid crystal, a substance made of complicated molecules. Like water, liquid crystals are solid at low temperatures. Also like water, they melt as you heat them. But when ice melts, it changes into a clear, easily flowing liquid. Liquid crystals, however, change into a cloudy liquid very different from liquids like water, alcohol, or cooking oil. At slightly higher temperatures, the cloudiness disappears, and they look much like any other liquid. Most LCDs today also use a source of light coming from the rear of the display (backlight), such as a fluorescent light, to make the liquid crystal appear darker against the screen when in its cloudy phase. LCD makers also use sheets of polarizer material to enhance this effect. The LCD and keypad module gives you a handy 53 keys display, 5 buttons and a controllable backlight, plug it straight in on top of your handheld computer board or other project shields. The display is set behind the shield for a low profile fitment and nice look and we've included panel mounting screw holes in the corners.