矩阵模式的led
LED：发光二极管 (LED: Light Emitting Diode)
LED is an abbreviation of "Light Emitting Diode".
LED是“发光二极管”的缩写 。
It is a two-lead semiconductor source of light that produces light when current flows in the course of it. It is a pn-junction diode that produces light when made active. It is a very significant electronic device because it is used in a variety of electrical and electronic devices in the present time. It is typically used in electronic test equipment, TVs, calculators, watches, radios, etc. It is also used in applications as varied as aviation lighting, automotive headlamps, advertising, general lighting, traffic signals, camera flashes, lighted wallpaper, plant growing light, and medical devices.
它是一种双引线半导体光源，当电流在其中流过时会发光。 它是一个pn结二极管，在**时会发光。 这是非常重要的电子设备，因为当前它被用于各种电气和电子设备中。 它通常用于电子测试设备，电视，计算器，手表，收音机等。还用于各种场合，例如航空照明，汽车前照灯，广告，普通照明，交通信号，照相机闪光灯，发光墙纸，植物生长灯和医疗设备。
The first visible-light LEDs were of low intensity and restricted to red. Modern LEDs are available all over the visible, ultraviolet, and infrared wavelengths, with the high light output.
第一批可见光LED的强度很低，并且仅限于红色。 现代的LED在可见光，紫外线和红外波长范围内都有提供，并且具有高光输出。
Image source: https://learn.adafruit.com/all-about-leds/what-is-an-led
图片来源：https://learn.adafruit.com/all-about-leds/what-is-an-led
LED工作 (LEDs Working)
- In LEDs, when a proper voltage of electricity is applied, electrons cause to merge again with electron holes and release energy in the form of photons. This effect is called electroluminescence. 在LED中，施加适当的电压后，电子会再次与电子空穴合并，并以光子的形式释放能量。 该效应称为电致发光。
- The color of LED's light is resolute by the energy bandgap of the semiconductor. LED的光的颜色由半导体的能带隙决定。
- LED is established as a radical and innovative product in the field of the light source. Its lamps are very energy resourceful, economical and long-term enduring. LED被确立为光源领域的一种创新性产品。 它的灯非常节能，经济并且可以长期使用。
- As in comparison to conventional lighting bulbs and fluorescent light sources, it is almost 80% energy resourceful. 与传统的灯泡和荧光灯相比，它的能源利用率几乎为80％。
LED的优点 (Advantages of LED)
1) Energy resourceful
1)能源丰富
- LED involves a very small amount of power. For example, LED TVs are highly energy resourceful than CRT and LCD TVs. LED消耗的功率非常小。 例如，LED电视比CRT和LCD电视具有更高的能源利用率。
- LED does not generate heat, so it diminishes the cooling loads also. LED不产生热量，因此也减少了冷却负荷。
- LED does not generate buzzing noises and flickers etc. LED不会产生嗡嗡声和闪烁等。
2) Environment Friendly
2)环保
- LED lights are harmless. It does not comprise mercury, lead or cadmium. The better use of LED lights can diminish carbon emission. LED灯无害。 它不包含汞，铅或镉。 更好地使用LED灯可以减少碳排放。
3) Prolonged Existence
3)长期存在
- With a suitable installation, the LED can be worked for a long duration of time with a very low maintenance charge. 通过适当的安装，LED可以长时间工作，且维护费用非常低。
4) Maintenance and Safety
4)维护与安全
- LED requires very low maintenance charge. It also has need of very low recycling charge. LED需要非常低的维护费用。 它还需要非常低的回收费用。
5) Recyclable
5)可回收
- LED is recyclable with very low recycling charges. LED是可回收的，回收费用非常低。
6) Enhanced Picture Quality
6)增强画质
- LED provides enhanced image quality than LCD. LED提供比LCD高的图像质量。
- LEDs have enabled new text, video displays and sensors to be expanded. Due to their high switching charges, they can be also functional in highly developed communication technology. LED使新的文本，视频显示和传感器得以扩展。 由于它们的高开关电荷，它们还可以在高度发达的通信技术中发挥作用。
翻译自: https://www.includehelp.com/dictionary/led-full-form.aspx
矩阵模式的led