led的基本名词解释
1 :什么是LED?LED是发光二极管的英文缩写(Light emitting diode),显示屏行业所说的“LED”,特指能发出可见光波段的LED;比如亮比发的什么什么原子屏【真不知道他们那那么多骗人的把戏!】
2 :什么是像素?
LED显示屏的最小发光像素,同普通电脑显示器中说的“像素”含义相同;
3:什么是像素距(点间距) ?
由一个像素点中心到另一个像素点中心的距离;
4:什么是LED显示模块?
由若干个显示像素组成的,结构上独立、能组成LED显示屏的最小单元。典型有“8×8”、“5×7”、“5×8”等,
通过特定的电路及结构能组装成模组;
5: 什么是DIP?
DIP是Double In-line Package 的缩写,双列直插式组装;
6: 什么是SMT?什么是SMD?
SMT就是表面组装技术(Surface Mounted Technology的缩写),是目前电子组装行业里最流行的一种技术和工艺;
SMD是表面组装器件(Surface mounted device 的缩写);
7: 什么是LED显示模组?
由电路及安装结构确定的、具有显示功能、能通过简单拼装实现显示屏功能的基本单元;
8:什么是LED显示屏?
通过一定的控制方式,由LED器件阵列组成的显示屏幕;
9:什么是插灯模组? 优点和缺点是什么?
是指DIP封装的灯将灯脚穿过PCB板,通过焊接将锡灌满在灯孔内,由这种工艺做成的模组就是插灯模组;优点是视角大,亮度高,散热好;缺点是像素密度小;
10:什么是表贴模组?优点和缺点是什么?
表贴也叫做SMT,将SMT封装的灯通过焊接工艺焊接在PCB板的表面,灯脚不用穿过PCB板,由这种工艺做成的模组叫做表贴模组;优点是:视角大,显示图象柔和,像素密度大,适合室内观看;缺点是亮度不够高,灯管自身散热不够好;
11: 什么是亚表贴模组?优点和缺点是什么?
亚表贴是介于DIP和SMT之间的一种产品,其LED灯的封装表面和SMT一样,但是它的正负级引脚和DIP的一样,生产时也是穿过PCB来焊接的,其优点是:亮度高,显示效果好,缺点是:工艺复杂,维修困难;
12:什么是3合1?其优点和缺点是什么?
是指将R、G、B三种不同颜色的LED晶片封装在同一个胶体内;优点是:生产简单,显示效果好,缺点是:分光分色难,成本高;
13:什么是3并1?其优点和缺点是什么?
3并1是指将R、G、B三种独立封装的SMT灯按照一定的间距垂直并列在一起,这样不但具有3合1所有的各个优点,还能解决3合1的各种缺点;
14:什么是双基色,伪彩、全彩显示屏?
通过不同颜色的发光二极管能够组成不同的显示屏,双基色是由红、绿或黄绿两种颜色组成、伪彩是由红色、黄绿、蓝色三种不同颜色组成、全彩是由红色、纯绿、纯蓝三种不同颜色组成;
15:什么是发光亮度?
LED显示屏单位面积所发出的光强度,单位是cd/㎡,简单说就是一平方米显示屏发出的光强度;
16:什么是亮度等级?
整屏亮度在最低到最高亮度之间的手动或自动调节的级数;
17:什么是灰度等级?
在同一亮度等级下,显示屏从最暗到最亮之间的技术处理级数;
18: 什么是最大亮度?
在一定的环境照度下,LED显示屏个基色在最大亮度和最大灰度等级时;
19: 什么是PCB?
PCB是(Printed Circuit Board的缩写)印刷电路板;
20: 什么是BOM?
BOM是(Bill of material的缩写)物料清单;
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——本文来自〖www.521LED.com〗原帖地址:http://www.521led.com/viewthread.php?tid=54&fromuid=44 长长见识
长长见识
长长见识 ***400;200;400,200;;#f69;* m104,106 l105,108,109,115,113,124,121,137,128,148,136,159,140,168,143,174,145,175,146,177,154,177,163,174,170,172,178,170,188,165,202,161,225,150,243,140,257,131,268,124 279,114,289,107,298,102,305,98,311,95,313,93,317,90,318,89,320,88,321,87,322,85,326,81,327,81,327,79,328,79,328,78,329,78,329,77,330,77,330,76 331,76,331,75,332,74,333,74,335,72,337,71,338,70,340,70,342,69,342,68,343,68,343,67,344,66,345,66,346,65,346,64,347,64,347,63,348,62,349,62 349,61 e|********* m30,61 l31,61,31,62,33,63,33,64,34,64,35,65,57,65,59,66,71,66,79,64,87,63,92,63,99,61,101,60,102,58,104,58,106,57,107,56,108,56,110,55 112,55,112,54,113,54,115,52,116,52,118,51,91,51,90,50,87,49,83,48,14,48,13,49,13,51,15,53,16,53,16,55,18,55,18,56,19,56,19,57 21,57,22,58,22,59,23,60,25,61,35,61 e|********* m56,43 l56,36,57,34,57,10,56,9,56,6,57,5,57,1,58,2,58,3,59,3,61,5,62,5,64,7,65,9,66,9,69,12,70,12,70,13,67,13,66,14 64,15,62,15,60,17,57,17 e|********* m57,37 l57,62 e 4# xwt 学习 学习 {:1_84:}{:1_84:} 回吧,,,为了看看,呵, 版主的东西都要好好学学 版主的东西都要好好学学——本文来自〖www.521LED.com〗原帖地址:http://www.521led.com/viewthread.php?tid=54&fromuid=316 斑竹的好东西都拿出来分享了,感谢感谢~! 学习。。。学习。。。 ***400;200;400,200;;** m32,75 l32,74,134,74,134,73,149,73,151,72,152,71,149,71,142,73,133,74,128,76,123,77,102,83,93,85,86,87,81,88,76,90,72,91,67,93,65,93,62,95 58,97,55,98,54,99,52,99,50,100,49,101,48,101,46,102,46,103,45,103,44,104,43,104,43,105,40,107,38,109,38,110,39,109 e|********* m98,87 l98,194,96,194,95,192 e|********* m115,114 l117,114,118,115,120,116,125,121,131,126,139,131,147,138,155,144,162,150,170,155,174,160,179,164,185,168,189,171,192,174,194,175,195,175 e|********* m257,43 l257,45,256,47,254,49,253,52,251,55,248,58,245,62,242,65,238,70,235,74,234,76,231,79,230,81,229,82,228,84,227,84,227,85,225,86,225,87,224,87 222,89,222,90,234,90,246,89,248,89,249,88,272,88,271,89,269,90,266,92,262,93,258,95,244,104,239,108,233,112,232,114,231,114,230,115,230,116,256,116 256,123,253,126,252,129,245,136,237,140,233,143,227,149,226,149,226,152,241,159,260,159,260,158,258,156,254,148,252,145,251,141,249,138,248,136,245,131,245,178 247,182,249,188,249,189,251,191,251,192,253,192,258,188,259,188,261,183,262,180,262,171,261,171,245,166 e|********* m281,82 l319,82,327,80,332,80,337,78,340,78,340,77,341,77,341,75,339,75,336,74,332,72,326,71,319,69,306,66,302,65,299,65,297,63,295,62,295,68,296,72 296,93,297,96,297,102,298,102,299,101,301,100,306,93,315,80,319,76,322,70,324,67,324,66,325,65,325,62,326,62,326,68,327,77,327,99,284,99,284,101 285,101,289,102,336,102,337,103,338,105,342,107,343,108,345,109,349,109,355,111,348,111 e|********* m300,134 l302,139,303,143,306,152,306,162,309,171,310,176,310,188,309,186,309,184,307,181,307,145,308,143,309,143,311,141,319,138,323,136,327,135,330,134,333,134,336,133 346,133,347,134,347,136,348,138,348,142,349,143,349,196,347,195,344,194,342,193 e|********* m317,175 l317,174,318,174,320,173,325,172,334,172 e|********* m318,188 l328,188,331,189,335,189 e ***400;200;400,200;;*3; m79,163 l79,162,78,157,77,157,75,140,74,138,74,128,73,126,73,56,74,55,74,49,75,48,75,45,76,45,76,43,77,41,77,39,78,39,78,38,79,36,80,35 81,35,81,37,82,38,82,41,83,41,83,42,85,44,85,48,86,49,86,50,87,51,87,53,88,54,89,56,89,58,90,59,90,71,91,71,91,75,92,75 92,81,93,81,92,82,92,88,93,88,93,93,94,93,94,94,95,95,95,97,96,97,96,99,97,99,97,102,100,105,100,103,101,102,101,100,102,99,102,97 103,94,103,92,105,89,105,87,106,85,107,84,107,83,108,81,108,79,109,78,109,76,110,73,113,66,114,65,115,62,115,61,116,60,116,58,117,56,117,53 118,52,119,50,119,49,120,47,120,46,121,45,121,43,122,42,122,41,123,39,123,36,124,36,125,34,127,32,128,32,131,34,133,36,135,36,135,66,134,66 134,76,133,77,133,83,131,85,131,87,130,89,130,91,128,93,127,95,127,97,126,98,126,99,125,100,125,101,124,103,124,105,122,106,122,108,121,109,121,108 125,104,125,103,127,103,127,102,128,101,129,101,131,100,133,100,136,97,138,97,138,104,141,103,144,101,147,100,149,100,150,99,152,99,152,107,151,109,150,109 150,108,151,108,153,107,155,105,158,105,161,104,162,105,163,105,163,113,162,114,161,114,161,115,160,115,160,117,156,121,156,122,154,122,154,123,153,123,150,126 150,128,149,128,146,131,146,132,145,133,145,134,143,136,143,137,142,138,141,140,140,140,140,141,136,145,136,146,134,147,134,149,132,149,132,150,131,151,131,152 130,152,130,153,129,154,129,174 e 1# xwt
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