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发光二极管(LED)是一种应用普遍的光电器件,因其工作电压低、耗电省、发光颜色种类多、寿命长及价格低,而受到电气工作者与科研人员的欢迎,并在各种机电产品、家用电器、仪器仪表、微机、电话机与现代办公器材中获得广泛的应用。LED问世以来,至今已有20多年的历史,随着新材料及半导体工艺技术的发展,LED也在不断创新,并在多颜色、高亮度及新品种方面取得了较大的进展。
Light Emitting Diode (LED) is a commonly used optoelectronic device, which is welcomed by electrical workers and researchers because of its low operating voltage, low power consumption, many types of luminescent colors, long lifetime and low price. Mechanical and electrical products, household appliances, instruments, computers, telephones and modern office equipment access to a wide range of applications. Since the advent of the LED, it has been more than 20 years old. With the development of new materials and semiconductor technology, LED is constantly innovating and made great progress in multi-color, high brightness and new varieties.