Tuesday, March 4, 2014

Led大屏幕安装常见问题及解决方案

Led大屏幕安装常见问题及解决方案
  led大屏幕安装并不是很多人想像的把若干单元屏体“拼图”一样的合并那么简单,实际led大屏幕在安装应用的时候会涉及到很多技术参数,因为安装环境和安装方式差异,系统也会有不同的反应。为了让客户能够更好的了解led大屏幕安装相关知识,更好的使用和维护好led大屏幕,这里给大家分享led大屏幕在安装过程中常见的问题及其解决办法。
  常见问题一:不能加载和通讯怎么办?
  解决方案:
  1、确保控制系统硬件已正确上电(+5V);
  2、检查并确认用于连接控制器的串口线为直通线,而非交叉线;
  3、检查并确认该串口连接线完好无损并且两端没有松动或脱落现象;
  4、对照LED显示屏控制软件和自己选用的控制卡来选择正确的产品型号、正确的传输方式、正确的串口号、正确的波特率并对照软件内提供的拨码开关图正确地设置控制系统硬件上的地址位及波特率;
  5、查看跳线帽是否松动或脱落;如果跳线帽没有松动现象,请确保跳线帽的方向正确;
  特别提醒:如经过以上检查并校正后仍然出现加载不上,请用万用表测量一下,是否所连接的电脑或控制系统硬件的串口被损坏,以确认是否应送还电脑厂家或将控制系统硬件送还检测;
  常见问题二:控制器正常,led大屏幕无显示?
  解决方案:
  1、确保led大屏幕正常上电;
  2、检查HUB分配板与显示屏的连线是否接反;
  3、检查所编辑并发送的节目是否为空;
  常见问题三:关于自动或手动亮度调节的含义?亮度调节是指在显示屏所能显示的最暗与最亮之间所做出的调整而非感光调节;
  1、自动亮度调节:根据不同的时间段所应出现的不同亮度而由诣阔led大屏幕控制系统自动调整至某一预定亮度.
  2、手动亮度调节:指终端用户通过对诣阔LED显示屏控制系统的操作而使led大屏幕达到某一指定亮度.
  常见问题四:出现提示“请连接led大屏幕控制器”字样怎么办?
  led大屏幕厂家一般会在其官方网站上面发布有“led大屏幕控制系统”,很多客户都会直接去下载使用,安装后运行20分钟后即会出现“请连接led大屏幕控制器”字样的提示,这是由于系统在测试的时间内未检测到控制系统硬件的原故;
  解决方案:
  1、将购得的led大屏幕控制系统硬件的一端与电脑相连,另一端与HUB分配板相连,HUB分配板的排线插座与led大屏幕的各个单元部份的接口相连接;
  2、连接完毕后进入到“设置”内的“设置屏参”设置相关参数,完成后关闭再重新打开软件,这时,软件上方会出现“连接成功”字样.此时,系统已检测到显示屏控制系统硬件,便可无时间限制地正常使用了;
  常见问题五:led大屏幕控制系统硬件上电时会出现几秒钟亮线/花屏。
  原因:将显示屏控制器与电脑及HUB分配板和显示屏连接妥当后,需要给控制器提供+5V电源以使其正常工作(此时,切勿直接与220V电压相连接)上电瞬间,显示屏上会出现几秒钟的亮线或“花屏”,该亮线或“花屏”均是正常测试的现象,提醒用户显示屏即将开始正常工作,2秒钟内,该现象自动消除,显示屏进入正常工作状态;
  常见问题七:单元板出现整屏不亮、暗亮。
  解决方案:
  1、目测电源连接线、单元板之间的26P排线及电源模块指示灯是否正常;
  2、用万用表测量单元板有无正常电压,再测量电源模块电压输出是否正常,否则判断为电源模块坏;
  3、量电源模块电压低,调节微调(电源模块靠近指示灯处的微调)使电压达到标准;
  常见问题八:led显示屏出现黑屏。
  解决方案:
  在控制系统运用的过程中,偶尔也会遇到led显示屏出现黑屏的现象.同样的一种现象可能是由各种不同的原因导致的,就连显示屏变黑的过程也会因不同操作或因不同环境而异.比如它可能是一上电的瞬间就是黑的,也可能在加载过程中变黑,还可能是在发送完毕后变黑等等.遇到这种现象请注意可参照以下各个方面来判断“故障”:
  1、请确保包括控制系统在内的所有硬件已全部正确上电.(+5V,勿接反、接错);
  2、检查并再三确认用于连接控制器的串口线是否有松动或脱落现象(如果在加载过程中变黑,很可能是因为该原因造成,即在通讯过程中由于通讯线松动而中断,故而屏黑千万不要以为显示屏体没有动,线就不可能松动,请动手检查一下,这对您想要快速解决问题很重要)
  3、检查并确认连接LED显示屏及与主控制卡相连的HUB分配板的是否紧密连接、是否插反。

outdoor advertising SMD LED display/screen P10

outdoor advertising SMD LED display/screen P10

Product features
The degree of uniformity to the screen body is high, basic uniformity is 5%, the highest is 1%; With online single point test function, it can real-time test to see whether all the pixel of the screen is out of work, and it can remote transmission each pixel working condition; Under high or low temperature, each module can maintain their shape, light module warranty five years; No dust and water stay, the drench water experiment showed that water just stay less than 5 minutes. There is a handle in the pan in order to install and maintain easily , the veil do not reflect lights, ultraviolet radiation resistant, five years do not fade, screen body contrast for 1000:1; The flatness coefficient is less than 0.5 mm, power factor is above 88% ; With low current work condition, white balance is 7000 CD per Square meters and the heat in the cabinet is below 40.

Product application:
applied to information public announcement, image advertisement, activity advertisement, etc.

The user benefits:
Photographic control system: according to the outdoor changes of light to automatically adjust the display screen brightness, keep the best display effect and dynamic power saving, reduce your operation cost;
High refresh high gray scale: vivid display effects, meet with high visual quality of business requirements;
double backup system: two computers control a screen, when a computer broke down, another computer can replace it, ensure the display screen working. The maintenance spare parts are modular design, easy to after-sales maintenance;
High effective optical fiber transmission system: effectively reduce the signal delay phenomenon caused by transmission distance, to ensure the picture play consistency;
remote network intelligent control system :you can change the content of several display in different cities by the remote synchronization control system and timeshare control system, Just click with the mouse ,the picture information can be easily replaced so as to realize the display advertising network cluster. Multi-function card achieve timing or manually at any time switch display, realize the unattended function.

Project classificationConventional display
modelP10
Pixel unit modulePixel pitch(mm)10
Pixel density (nits/㎡)10000
LED typeSMD
Resolution of pixel(nits)W32×h32
Module size(mm)W320×h320
Pixel composing1R1G1B
Pixel unit cabinetCabinet size(mm)W960×h960
Cabinet Resolution (nits)W96×h96
Module arrangement (个)3×3
Cabinet structureWater-proof
installationfixed on the back
Cabinet materialironaluminum
Cabinet weight(KG)6040
The way the cascadeAviation head
Protect degreeIP65 front IP43 back
Display parametersViewing distance(m)12~35
brightness(cd/㎡)4000~6000
Power consumption (w/㎡)320 ave 700 max
Driving IC16 constant flow of chip
Refresh rate(HZ)≥500
Display ratio (suggest)4:3/16:9
Viewing angel(c)H110 V50
System working voltage88-132VAC176-264VAC 47-63HZ
Other parameterImage adjustmentcontrast, tonal, the color saturation, gray calibration coefficient, color range, image variable times, etc
Image processingVideo noise reduction, fast motion compensation, edge to sharpen,edge smooth, color space transformation and control, coordinate transformation of grey scale, etc
Brightness uniformityThe whole screen on the monochrome, minimum pixel luminance and the brightest pixel luminance than more than 0.9
Gray/colorRed green blue1024 grade10BIT,10.7 billion color
Color temperature/contrastRed, green, and blue brightness and contrast can through the software level 100 adjustable, color temperature can be adjusted according to need
Transmitting DistanceThe shielded twisted-pair cable transmission distance for 100 meters, the biggest up to 140 m.Multimode fiber of up to 500 meters, the single-mode optical fiber to 20 kilometers
Input SignalRF、S-VIDEO、RGBTV、YUT、YC、COMPOSITION
Control SystemPCTV non-liner editing card+DVI display card+main control card+optic fiber transmission(Optional) or video dealer
Average No Failure Time5000 hours
Life span100,000 hours
Out-of Control rate0.0001
To floor drain currentLess than 3.5MA
Control systemSynchronized
Operating Environment Temperature-20℃—65℃ Optional

Project classificationConventional display
modelP16
Pixel unit modulePixel pitch(mm)16
Pixel density (nits/㎡)3906
LED typeSMD
Resolution of pixel(nits)W20×h20
Module size(mm)W320×h320
Pixel composing1R1G1B
Pixel unit cabinetCabinet size(mm)W960×h960
Cabinet Resolution (nits)W60×h60
Module arrangement (个)3×3
Cabinet structureWater-proof
installationfixed on the back
Cabinet materialironaluminum
Cabinet weight(KG)6040
The way the cascadeAviation head
Protect degreeIP65 front IP43back
Display parametersViewing distance(m)20~50
brightness(cd/㎡)6000~9500
Power consumption (w/㎡)280 ave 630 max
Driving IC16 a constant flow of chip
Refresh rate(HZ)≥480
Display ratio (suggest)4:3/16:9
Viewing angel(c)H110 V50
System working voltage88-132VAC176-264VAC 47-63HZ
Other parameterImage adjustmentcontrast, tonal, the color saturation, gray calibration coefficient, color range, image variable times, etc
Image processingVideo noise reduction, fast motion compensation, edge to sharpen, edge smooth, color space transformation and control, coordinate transformation of grey scale, etc
Brightness uniformityThe whole screen on the monochrome, minimum pixel luminance and the brightest pixel luminance than more than 0.9
Gray/colorRed green blue1024 grade10BIT,10.7 billion color
Color temperature/contrastRed, green, and blue brightness and contrast can through the software level 100 adjustable, color temperature can be adjusted according to need
Transmitting DistanceThe shielded twisted-pair cable transmission distance for 100 meters, the biggest up to 140 m. Multimode fiber of up to 500 meters, the single-mode optical fiber to 20 kilometers
Input SignalRF、S-VIDEO、RGBTV、YUT、YC、COMPOSITION
Control SystemPCTV non-liner editing card+DVI display card+main control card+optic fiber transmission(Optional) or video dealer
Average No Failure Time5000 hours
Life span100,000 hours
Out-of Control rate0.0001
To floor drain currentLess than 3.5MA
Control systemSynchronized
Operating Environment Temperature-20℃—65℃ Optional

P6 P8 rental LED display

P6 P8  Die-cast rental LED display


Product features:
Cabinet with light weight, convenient to mobile, remove, design lock, handle, seamless, ensures the smooth and beautiful picture;
Signal and the power cord is connected by waterproof box, installation is convenient and quick, easy to operation;
Cabinet is waterproof, moisture-proof, corrosion resistance, can be use in different climate and different zone in the world. With the protection class IP65, the screen in the rainy day weather can continue to work, temperature range in-30 degrees ~ 60 degrees also optional even can be used in the high humidity and high salinity environment.
equipped with professional audio/video processing system, support a variety of stage signal processing, such as AV, DP, VGA and DVI, YPBPR, HDMI, SDI signals, ensure the quality of signal processing to, make play high fidelity image signal become possible;
Support level 256 brightness to adjust and white balance custom adjustment, make different batches of the screen can be mixed use.
support arbitrary to signal lines, meet different cabinet lined and place, in order to create a different picture of the effect.
Each box, equipped with circuit, signal indicator light, intuitive convenient to be monitoring at site.
Product use:
Outdoor large performance
The user benefits:
can be installed by hoisting or fixed assembly structure; can meet the outdoor stage layout demand;
Light, ultra-thin, fast installation design, make you can install and remove the display in a short time.
Double backup system: two computers control a screen; when a computer broke down, another computer can replace it, ensure the display screen working. The maintenance spare parts are modular design, easy to after-sales maintenance;
With various specifications of flight case, facilitate the storage and transport of the cabinet, and play a good protection role.
High refresh rate, can meets the needs of the filming in the different situations, effectively avoid the photographs when the flashing phenomenon.


Outdoor Rental LED Display

Product features:
Cabinet with light weight, convenient to mobile, remove, design lock, handle, seamless, ensures the smooth and beautiful picture;
Signal and the power cord is connected by waterproof box, installation is convenient and quick, easy to operation;
Cabinet is waterproof, moisture-proof, corrosion resistance, can be use in different climate and different zone in the world. With the protection class IP65, the screen in the rainy day weather can continue to work, temperature range in-30 degrees ~ 60 degrees also optional even can be used in the high humidity and high salinity environment.
equipped with professional audio/video processing system, support a variety of stage signal processing, such as AV, DP, VGA and DVI, YPBPR, HDMI, SDI signals, ensure the quality of signal processing to, make play high fidelity image signal become possible;
Support level 256 brightness to adjust and white balance custom adjustment, make different batches of the screen can be mixed use.
support arbitrary to signal lines, meet different cabinet lined and place, in order to create a different picture of the effect.
Each box, equipped with circuit, signal indicator light, intuitive convenient to be monitoring at site.
Product use:
Outdoor large performance
The user benefits:
can be installed by hoisting or fixed assembly structure; can meet the outdoor stage layout demand;
Light, ultra-thin, fast installation design, make you can install and remove the display in a short time.
Double backup system: two computers control a screen; when a computer broke down, another computer can replace it, ensure the display screen working. The maintenance spare parts are modular design, easy to after-sales maintenance;
With various specifications of flight case, facilitate the storage and transport of the cabinet, and play a good protection role.
High refresh rate, can meets the needs of the filming in the different situations, effectively avoid the photographs when the flashing phenomenon.


difference between the DIP module, Matrix Module and SMD module

1,what is the difference between the DIP module, Matrix Module and SMD module? 

DIP module is applying LED DIP lamps. It is the brightest one in all the 3 kind of the technology, and extensively applied in outdoor display for the brightness and mature technology for water proof. But the disadvantage is the pixel diameter can't be too small. At present, the smallest full color DIP pixel is P8 in the market. It can't be even smaller; 
SMD module is applying LED SMD lamps, 3 color chips packaged in 1 lamp. The advantage is small pixel diameter, such as P3, P4, P5, etc. But it is not bright enough and water proof is not good enough for rough weather. So it is more applied for indoor LED display, kinds of sign; 
Matrix module is an outdated technology in the market in some extent. It is seldom applied in full color LED display, only in monochrome and dual-color, tri-color display products. The advantage is low cost. It is the most cheap one in the 3 kinds of modules, but lower brightness, no water proof. So it is applied in many indoor scrolling message display, large message center, message box or something;


2, what is the difference between the outdoor LED moving display, window LED moving display and the indoor LED moving display? 
Outdoor LED moving display applies DIP modules, with high brightness, good water proof, steel cabinet. It is completely capable of outdoor weather. But it costs the most in the 3 series; 
Window LED moving display applies DIP modules or SMD modules for high brightness, but no water proof. Because it is used indoor, and facing to street, high brightness is necessary to catch the passengers' attention. Due to no water proof and only aluminum frame are used, it costs less than the outdoor LED moving display; 
Indoor LED moving display is for completely indoor use, most applying LED matrix module. Though it is not so bright as the former two, but it is the most cheap one in the 3 kinds of products. And it is proved good enough for indoor use. It is the best price quality one for indoor use.


3, How to choose a suitable LED moving display? 
When choosing a LED moving display, please consider some factors, 
A, where it will be used? Outdoor, window or indoor use? 
B, what size is suitable for the installation site? 
C, after installation, is it suitable for operation by PC or by remote controller? 
D, what is the minimum viewing distance? 
According to the 4 factors above, to choose a most suitable model. 
4, do you have a super slim LED moving message display? 
Yes, we have super slim LED moving message display, it is only 18mm depth, 1 line led moving message display.


5, are all you products listed in the website? 
No. Only standards models are listed in the website. We accept kinds of customized LED display and OEM manufacturing. Let us know your requirement, a right solution will be offered.


2014 LED DISPLAY QUOTE 2014年LED显示屏报价

2014 LED DISPLAY QUOTE
2014年LED显示屏报价

8年LED显示屏生产经验,全国顶尖深圳LED显示屏,领先深圳LED显示屏厂家,LED显示屏


2014年LED显示屏报价,8年LED显示屏生产经验,全国顶尖深圳LED显示屏,领先深圳LED显示屏厂家,LED显示屏专家,最好的LED显示屏生产厂家,深圳LED显示屏厂家直销售,中国优秀的深圳LED显示屏厂家价格,行业领先LED显示屏厂家,国际品质、超低价格。led显示屏,led大屏幕,电子大屏幕的著名品牌制造商,8年以上的led大屏幕,led显示屏研发经验,产品主要出口美国,日本,英国,俄罗斯,沙特,印度等40多个国家和地区,山东LED显示屏专业生产厂家、济南LED显示屏行业经验8年值得信赖,质量胜过承诺


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,而是后面再加上荧光粉,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 1.5~3.6V),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放在一起作为一个象素制作的显示屏分为单色,把红、绿、蓝三种LED管放在一起作为一个象素的显示屏叫三色屏或全彩屏。如果只有一种色就叫做单色,制作室内 LED 屏的象素尺寸一般是2-20 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 屏的象素尺寸多为8-32毫米,每个象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象素的每个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。

应用于显示屏的LED发光材料有以下几种形式:
① LED发光灯(或称单灯)  一般由单个LED晶片,反光碗,金属阳极,金属阴极构成,外包具有透光聚光能力的环氧树脂外壳。可用一个或多个(不同颜色的)单灯构成一个基本像素,由于亮度高,多用于户外显示屏。
② LED点阵模块  由若干晶片构成发光矩阵,用环氧树脂封装于塑料壳内。适合行列扫描驱动,容易构成高密度的显示屏,多用于户内显示屏。
③ 贴片式LED发光灯(或称SMD LED)  就是LED发光灯的贴焊形式的封装,可用于户内全彩色显示屏,可实现单点维护,有效克服马赛克现象。

LED显示屏(LEDdisplay,LED Screen):又叫电子显示屏或者飘字屏幕。是由LED点阵和led pc 面板组成,通过红色,蓝色,白色,绿色LED灯的亮灭来显示文字、图片、动画、视频,内容。可以根据不同场合的需要做出不同的调节,比如一般的广告牌那些流动的字画,就是通过flash制作一个动画,储蓄在显示屏的一张内存卡里,再通过技术手法显示出来的,可以根据不同的需要随时更换,各部分组件都是模块化结构的显示器件。传统LED显示屏通常由显示模块、控制系统及电源系统组成。

LED之所以受到广泛重视而得到迅速发展,是与它本身所具有的优点分不开的。这些优点概括起来是:亮度高、工作电压低、功耗小、大型化、寿命长、耐冲击和性能稳定。LED的发展前景极为广阔,正朝着更高亮度、更高耐气候性、更高的发光密度、更高的发光均匀性,可靠性、全色化方向发展。
静态扫描技术采用静态锁存扫描方式,大功率驱动,充分保证发光亮度. 自动亮度调节具有自动亮度调节功能,可在不同亮度环境下获得最佳播放 效果..LED显示屏在保有亮度的同时,也存在着弊端,就是在下雨天,LED显示屏经过雨水淋湿,人的眼睛长时间近距离对着显示屏就会很容易诱发眼疾,出现流眼泪的情况,这种光源污染,LED显示屏作为环保技术应是需要更充份考虑到光线对人的精神方面的影响,不要过份追求亮度

全面采用进口大规模集成电路,可靠性大大提高,便于调试维护。

LED显示屏性能超群
1)发光亮度强,在可视距离内阳光直射屏幕表面时,显示内容清晰可见. 
  LED显示屏
超级灰度控制 具有1024-4096级灰度控制,显示颜色16.7M以上,色彩清晰逼真,立体感强.
2)静态扫描技术,采用静态锁存扫描方式,大功率驱动,充分保证发光亮度.
3)自动亮度调节 具有自动亮度调节功能,可在不同亮度环境下获得最佳播放效果.
4)全面采用进口大规模集成电路,可靠性大大提高,便于调试维护.
5)先进的数字化视频处理,技术分布式扫描,BSV液晶拼接技术高清显示,模块化设计/恒流静态驱动,亮度自动调节,超高亮纯色象素,影像画面清晰、无抖动和重影,杜绝失真。视频、动画、图表、文字、图片等各种信息显示、联网显示、远程控制.
  
LED的色彩与工艺制造LED的材料不同,可以产生具有不同能量的光子,借此可以控制LED所发出光的波长,也就是光谱或颜色。
1.历史上第一个LED所使用的材料是砷(As)化镓(Ga),其正向PN结压降(VF,可以理解为点亮或工作电压)为1.424V,发出的光线为红外光谱。
2.另一种常用的LED材料为磷(P)化镓(Ga),其正向PN结压降为2.261V,发出的光线为绿光。
3. 基于这两种材料,早期 LED工业运用GaAs1-xPx材枓结构,理论上可以生产从红外光一直到绿光范围内任何波长的LED,下标X代表磷元素取代砷元素的百分比。一般通过PN结压降可以确定LED的波长颜色。其中典型的有GaAs0.6P0.4 的红光 LED,GaAs0.35P0.65 的橙光LED,GaAs0.14P0.86 的黄光LED等。由于制造采用了镓、砷、磷三种元素,所以俗称这些LED为三元素发光管。而GaN(氮化镓)的蓝光LED 、GaP 的绿光 LED和GaAs红外光LED,被称为二元素发光管。而目前最新的工艺是用混合铝(Al)、钙(Ca) 、铟(In)和氮(N)四种元素的AlGaInN 的四元素材料制造的四元素LED,可以涵盖所有可见光以及部份紫外光的光谱范围。 
  led显示屏-彩亮灯珠
4. 发光强度的衡量单位有照度单位(勒克司Lux)、光通量单位(流明Lumen)、发光强度单位(烛光 Candle power)
5. 1CD(烛光)指完全辐射的物体,在白金凝固点温度下,每六十分之一平方厘米面积的发光强度。(以前指直径为2.2厘米,质量为75.5克的鲸油烛,每小时燃烧7.78克,火焰高度为4.5厘米,沿水平方向的发光强度)
6. 1L(流明)指1 CD烛光照射在距离为1厘米,面积为1平方厘米的平面上的光通量。
7. 1Lux(勒克司)指1L的光通量均匀地分布在1平方米面积上的照度。
8. 一般主动发光体采用发光强度单位烛光 CD,如白炽灯、LED等;反射或穿透型的物体采用光通量单位流明L,如LCD投影机等;而照度单位勒克司Lux,一般用于摄影等领域。三种衡量单位在数值上是等效的,但需要从不同的角度去理解。比如:如果说一部LCD投影机的亮度(光通量)为1600流明,其投影到全反射屏幕的尺寸为60英寸(1平方米),则其照度为1600勒克司,假设其出光口距光源1厘米,出光口面积为1平方厘米,则出光口的发光强度为1600CD。而真正的LCD投影机由于光传播的损耗、反射或透光膜的损耗和光线分布不均匀,亮度将大打折扣,一般有50%的效率就很好了。
9. 实际使用中,光强计算常常采用比较容易测绘的数据单位或变向使用。对于LED显示屏这种主动发光体一般采用CD/平方米作为发光强度单位,并配合观察角度为辅助参数,其等效于屏体表面的照度单位勒克司;将此数值与屏体有效显示面积相乘,得到整个屏体的在最佳视角上的发光强度,假设屏体中每个像素的发光强度在相应空间内恒定,则此数值可被认为也是整个屏体的光通量。一般室外LED显示屏须达到4000CD/平方米以上的亮度才可在日光下有比较理想的显示效果。普通室内LED,最大亮度在700~2000 CD/平方米左右。  单个LED的发光强度以CD为单位,同时配有视角参数,发光强度与LED的色彩没有关系。单管的发光强度从几个mCD到五千mCD不等。LED生产厂商所给出的发光强度指LED在20mA电流下点亮,最佳视角上及中心位置上发光强度最大的点。封装LED时顶部透镜的形状和LED芯片距顶部透镜的位置决定了LED视角和光强分布。一般来说相同的LED视角越大,最大发光强度越小,但在整个立体半球面上累计的光通量不变。
10. 当多个LED较紧密规则排放,其发光球面相互叠加,导致整个发光平面发光强度分布比较均匀。在计算显示屏发光强度时,需根据LED视角和LED的排放密度,将厂商提供的最大点发光强度值乘以30%~90%不等,作为单管平均发光强度。11. 一般LED的发光寿命很长,生产厂家一般都标明为100,000小时以上,实际还应注意LED的亮度衰减周期,如大部分用于汽车尾灯的UR红管点亮十几至几十小时后,亮度就只有原来的一半了。亮度衰减周期与LED生产的材料工艺有很大关系,一般在经济条件许可的情况下应选用亮度衰减较缓慢的四元素LED。
12. 白色是红绿蓝三色按亮度比例混合而成,当光线中绿色的亮度为69%,红色的亮度为21%,蓝色的亮度为10%时,混色后人眼感觉到的是纯白色。但LED红绿蓝三色的色品坐标因工艺过程等原因无法达到全色谱的效果,而控制原色包括有偏差的原色的亮度得到白色光,称为配色。
13. 当为全彩色LED显示屏进行配色前,为了达到最佳亮度和最低的成本,应尽量选择三原色发光强度成大致为3:6:1比例的LED器件组成像素。
14.白平衡要求三种原色在相同的调灰值下合成的仍旧为纯正的白色。
15.原色、基色:
16. 原色指能合成各种颜色的基本颜色。色光中的原色为红、绿、蓝,下图为光谱表,表中的三个顶点为理想的原色波长。如果原色有偏差,则可合成颜色的区域会减小,光谱表中的三角形会缩小,从视觉角度来看,色彩不仅会有偏差,丰富程度减少。

LED 显示屏分类多种多样,大体按照如下几种方式分类:
(1)按使用环境分为户内 , 户外及半户外
户内屏面积一般从不到 1 平米到十几平米 , 点密度较高, 在非阳光直射或灯光照明环境使用,观看距离在几米以外,屏体不具备密封防水能力。
户外屏面积一般从几平米到几十甚至上百平米,点密度较稀 ( 多为 2500-10000点每平米 ), 发光亮度在 5500-8500cd/ 平米 ( 朝向不同,亮度要求不同 ) , 可在阳光直射条件下使用,观看距离在几 十米 以外,屏体具有良好的防风抗雨及防雷能力。
半户外屏介于户外及户内两者之间 , 具有较高的发光亮度 , 可在非阳光直射户外下使用,屏体有一定的密封,一般在屋檐下或橱窗内。
(2) 按颜色分为单色,双基色,三基色( 全彩 )
单色是指显示屏只有一种颜色的发光材料,多为单红色, 在某些特殊场合也可用黄绿色 ( 例如殡仪馆 ) 。
双基色屏一般由红色和黄绿色发光材料构成。
三基色屏分为全彩色 (full color), 由红色,黄绿色 ( 波长 570nm) , 蓝色构成及真彩色 (nature color), 由红色,纯绿色 ( 波长 525nm), 蓝色构成。
(3) 按控制或使用方式分同步和异步
同步方式是指 LED 显示屏的工作方式基本等同于电脑的监视器, 它以至少 30 场 / 秒的更新速率点点对应地实监视器上的图时映射电脑像 , 通常具有多灰度的颜色显示能力,可达到多媒体的宣传广告效果。
异步方式是指 LED 屏具有存储及自动播放的能力,在 PC 机上编辑好的文字及无灰度图片通过串口或其他网络接口传入 LED 屏 , 然后由 LED 屏脱机自动播放,一般没有多灰度显示能力,主要用于显示文字信息,可以多屏联网。
(4) 按像素密度或像素直径划分
由于户内屏采用的LED点阵模块规格比较统一所以通常按照模块的像素直径划分主要有: ∮ 3.0mm 62500 像素 / 平米 ∮ 3.75mm 44321 像素 / 平米 ∮ 5.0mm 17222 像素 / 平米
室内表贴像素点数:
P2.5 160000点/平米
P3 111111点/平米
P4 62500点/平米
P5 40000点/平米
P6 27777点/平米
P7.62 17222点/平米
P8 15625点/平米
P10 10000点/平米
户外屏的像素直径及像素点数
P10 10000点/平米
P12.5 6400点/平米
P16 4096点/平米
P20 2500点/平米
P25 1600 点/平米
P31.25 1024 点/平米
(5)按显示性能可分为
视频显示屏:一般为全彩色显示屏
文本显示屏:一般为单基色显示屏
图文显示屏:一般为双基色显示屏
行情显示屏:一般为数码管或单基色显示屏;

(6)按显示器件可分为
LED数码显示屏:显示器件为7段码数码管,适于制作时钟屏、利率屏等,显示数字的电子显示屏。
LED点阵图文显示屏:显示器件是由许多均匀排列的发光二极管组成的点阵显示模块,适于播放文字、图像信息。

LED视频显示屏:显示器件是由许多发光二极管组成,可以显示视频、动画等各种视频文件。
常规型LED显示屏:采用钢结构将显示屏固定安装于一个位置。主要常见的有户外大型单立柱LED广告屏,以及车站里安装在墙壁上用来播放车次信息的单、双色LED显示屏等。

租赁型LED显示屏:在设计时,研发部就考虑到该屏经常会用于安装与拆卸,所以左右箱体采用带定位功能的快速锁连接,定位精准,整个箱体安装10秒之内完成。租赁屏主要用于舞台演出、婚庆场所以及大型春晚。迈锐光电专注LED全彩显示屏、压铸铝箱全彩屏。实力品牌全彩LED显示屏厂家





questions before give price of large LED video display



If you need a LED screen quote, please answer carefully the questions below so we can propose you the correct specifications to generate the quote for any LED screen for you istantly.



1.Your contact details
Name:
company:
email address:
telephone number:
Nextel:
address:


2.Your led screen information in the application:
- Type of LED screen
  Displays for text, images or video
  installation type : indoor or outdoor
  With various colors or Monochrome
- minimum viewing distance
- Approximate size
  led screen width
  led screen height
- Type of communication preferred
   type of control system simple control system/ advance live video controller
   control distance wireless controller( internet/wifi)/ less than 100 meter/less than 400 meters/over 400      meters
- Function or intended purpose
  rental or fixed outdoor advertising



Best regards,
Sally Peng
Oversea Sales Manager
Shenzhen Great Tech LEDs Co.,Ltd
Cell: 0086 18898792143
Tel: 0086 755-29926100/29926179
Fax: 0086 755-29926232
Email: getelong@gtlled.com
Gmail: pengsally@gmail.com
Skype: sallypwp
Website: en.gtlled.com

GERON's outdoor SMD LED Module/IP68 magic operation in boiling water


SMD LED outdoor display

SMD LED outdoor display
SMD LED outdoor display

Questions before LED display quote

SMD outdoor LED video display global supplier If you need a LED screen quote, please answer carefully the questions below so we can propose you the correct specifications to generate the quote for any LED screen for you isntantly. 1.Your contact details Name: company: email address: telephone number: Nextel: address: 2.Your led screen information in the application: - Type of LED screen Displays for text, images or video installation type : indoor or outdoor With various colors or Monochrome - minimum viewing distance - Approximate size led screen width led screen height - Type of communication preferred type of control system simple control system/ advance live video controller control distance wireless controller( internet/wifi)/ less than 100 meter/less than 400 meters/over 400 meters - Function or intended purpose rental or fixed outdoor advertising Best regards, Sally Peng Oversea Sales Manager Cell: 0086 18898792143 Gmail: pengsally@gmail.com Skype/Wechat: sallypwp