双流广告公司电话，双流广告公司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），所以在大型的显示设备中，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。无论用LED制作单色、双色或三色屏，欲显示图象需要构成像素的每个LED的发光亮度都必须能调节，其调节的精细程度就是显示屏的灰度等级。灰度等级越高，显示的图像就越细腻，色彩也越丰富，相应的显示控制系统也越复杂。一般 256 级灰度的图像，颜色过渡已十分柔和，而16级灰度的彩色.图像，颜色过渡界线十分明显。所以，彩色LED屏当前都要求做成256级到4096级灰度的。
ShuangLiu advertising company,
ShuangLiu advertising company LED luminous color and associated with the production material and technology of the LED luminous efficiency, globe at first all of blu-ray, behind plus phosphors, according to the different needs of users, adjusting the different light color, the widely used have red, green, blue, yellow. Because of the low voltage LED work (1.2 ~ 1.2 V), active luminous and have certain brightness, brightness in voltage (or current) regulation, and in itself, and impact resistance, resistance to vibration, long life (100000 hours), so in the large display devices, there is no other way of display and LED display. The red and green LED chips or tubes together as a single pixel of display screen called three color or double colors, red, green, blue three kinds of LED chips or tube together as a pixel display screen called three colors or full color. If there is only one color is called the monochrome or single color screen, make indoor LED screen pixel size is generally 1.5 to 12 mm, often using several can produce different colors of the LED tube core is encapsulated as a body, LED outdoor screen pixel size of 6-41.5 mm, each pixel is made up of several kinds of monochrome leds, common product according to the pixel tube, double color pixel tube generally consists of 2 red 1 green, three color pixels of tube with 1 red 1 green and 1 blue. Whether made of LED monochrome, double color or 3 color screen, need to display image pixels of each LED luminous brightness must be able to adjust, the adjustment of fine degree is the grey scale display. The higher the gray level, the more delicate the image is, the more colorful the color is, and the more complicated the display control system is. Generally, the color transition of 256 grayscale images is very soft, while the color of the level 16 grayscale is very obvious. Therefore, the color LED screen is currently required to be made from 256 to 4096 grayscale.