中文解釋
什麼是LED?
LED的最顯著特點是使用壽命長，光電轉換效能高。
什麼是LED？
在某些半導體材料的PN結中，注入的少數載流子與多數載流子複合時會把多餘的能量以光的形式釋
放出來，從而把電能直接轉換為光能。PN結加反向電壓，少數載流子難以注入，故不發光。這種利用注
入式電致發光原理製作的二極體叫發光二極體，通稱LED。
LED的發光顏色和發光效率與製作LED的材料和工藝有關，目前廣泛使用的有紅、綠、藍三種。由於
LED工作電壓低（僅1.5-3V），能主動發光且有一定亮度，亮度又能用電壓（或電流）調節，本身又耐
衝擊、抗振動、壽命長（10萬小時），所以在大型的顯示設備中，目前尚無其他的顯示方式與LED顯示
方式匹敵。
把紅色和綠色的LED放在一起作為一個像素製作的顯示屏叫雙基色屏或偽彩色屏；把紅、綠、藍三種LED
管放在一起作為一個像素的顯示屏叫三基色屏或全彩屏。製作室內LED屏的像素尺寸一般是2-10毫米，
常常採用把幾種能產生不同基色的LED管芯封裝成一體，室外LED屏的像素尺寸多為12-26毫米，每個像
素由若干個各種單色LED組成，常見的成品稱像素筒或像素模組。
LED顯示屏如果想要顯示圖象，則需要構成像素的每個LED的發光亮度都必須能調節，其調節的精
細程度就是顯示屏的灰度等級。灰度等級越高，顯示的圖像就越細膩，色彩也越豐富，相應的顯示控
制系統也越複雜。在當前的技術水平下，256級灰度的圖像，顏色過渡已十分柔和，圖像還原效果比較
令人滿意。
資料顯示，LED光源比白熾燈節電87%、比螢光燈節電50%，而壽命比白熾燈長20~30倍、比螢光燈長10
倍。LED光源因具有節能、環保、長壽命、安全、回響快、體積小、色彩豐富、可控等系列獨特優點，
被認為是節電降能耗的最佳實現途徑。
英文解釋
What is a , LED?
In certain semiconductor material PN knot,Which will theminority carrier of infusion and
majority carrier compound ShihPa redundant Chi earnestly resentment badger of form acquit
comeout?Hereby Pa electric energy direct conversion for lightenergy. . 。PN knot add anti
Hsiang voltage,Minority carrierdifficult to infusion,Therefore No, aglow. 。This kind of
availoneself of infusion style electricity to aglow principium make
the crystal diode of call led,Appellative LED?
LED aglow color concerned in luminosity and fabricator LED material Ho craft,Currently widely
used have Hung , green , Lan three plants. 。Based on LED operating tensions low ( littles
less than 1.5-3V),Neng initiative aglow and has at all events brightness,Brightness and
employable voltage ( or electric current ) accommodate,In itself and endure buffets , shocks
resistances moves , ages long ( 10 Wan hour ),Forasmuch in man- size display device,
Currently Shang free from more bring out mode and LED bring out mode is equal to.? Do Pa
red Ho green LED put together as a pixel the bring out of fabricator screen call Shuang
base color screen or pseudo-color screen;Pa Hung , green , Lan three plants LED Kuan put
together as a the bring out of pixel screens calls triply primitives colors screens or full
colors screens. 。Studioes inner LED the pixel of sizes general are 2-10 centimeters,Often
adopt Pa severalplant Neng accrue different base color LED Kuan core capsulation Cheng an
organic whole,Outdoor LED the pixel of sizes manys for 12-26 centimeters,Each pixel consist
of several Ke all kinds monochromatic LED,Used to the completed product of say pixel tube
or pixel mold piece.?
Do if LED bring out screen feel like display frame elephant?
Hen call for component the each of pixel LED aglow brightness Tu has got to Neng
accommodate,Its accommodative delicate extent the same bring out that the gray scale of.
. 。Gray scale Yueh Kao,Apparent the eikon of just Yueh fine and smooth,Color also Yueh
abundance,The display control of corresponding system also Yueh complex. 。In the present
technic horizontal down,256 grades the eikons of draies levels,Color transition had
completely soft,Image restoration effect compare desirable. Do Data display,LED light
source compare filament lamp section electricity 87%, compare fluorescent lamp section electricity 50%,And ages compare Pai flaming lamps long 20~30 diameters , compare f
luorescent lamps long 10 diameters. 。LED lights sources because endowed with conserve
energys , environmental protections , long lives , An Chuan , responds fasts , cubage
littles , colors abundance , cans accuse and so on seriess peculiars advantages,known as
section electricity fall of the best of accomplish approach.
