LED的发光颜色和发光效率与制作LED的材料和工艺有关 ，灯球刚开始全是蓝光的，后面再加上荧光粉，根据用户的不同需要，调节出不同的光色，广泛使用的有红、绿、蓝、黄四种。由于LED工作电压低（仅 1.2~4.0V），能主动发光且有一定亮度 ，亮度又能用电压（或电流）调节，本身又耐冲击、抗振动、寿命长（10 万小时），所以在大型山刷房  保定强夯 卷扬式启闭机  保定网站制作 收费岛模具 遮阳网 麻绳显示设备中，尚无其他的显示方式与LED显示方式匹敌。把红色和绿色的LED晶片或灯管放在一起作为一个像素制作的显示屏称为三色或双基色屏，把红、绿、蓝三种LED晶片或灯管放在一起作为一个像素的显示屏叫三基色屏或全彩屏。如果只有一种色就叫做单色或单基色屏，制作室内 LED 屏的像素尺寸一般是1.5-12 毫米，常常采用把几种能产生不同基色的LED管芯封装成一体，室外LED 屏的像素尺寸多为6-41.5毫米，每个像素由若干个各种单色LED组成，常见的成品称象素筒，双色象素筒一般由2红1绿组成，三色象素筒用1红1绿1蓝组成。
The luminous color and efficiency of LED are related to the material and process of making LED. At the beginning, the lamp ball is all blue light, and then the phosphor is added. According to the different needs of users, different light colors are adjusted. There are four widely used colors: red, green, blue and yellow. Due to the low working voltage (only 1.2 ~ 4.0V), the LED can actively light up and have a certain brightness, the brightness can be adjusted by voltage (or current), and it is shock resistant, vibration resistant and long life (100000 hours), so there is no other display mode comparable to LED display mode in large display equipment. The display screen made by putting the red and green LED chips or tubes together as one pixel is called tricolor or bicolor screen, and the display screen made by putting the red, green and blue LED chips or tubes together as one pixel is called tricolor screen or full color screen. If there is only one color, it is called monochromatic or monochromatic screen. The pixel size of the indoor LED screen is generally 1.5-12mm. Several kinds of LED cores that can produce different primary colors are often used to package into one. Outdoor LED The screen's pixel size is mostly 6-41.5mm, each pixel is composed of several kinds of monochromatic LED, the common finished product is called pixel cylinder, the two-color pixel cylinder is generally composed of 2 red and 1 green, and the three-color pixel cylinder is composed of 1 red, 1 green and 1 blue.