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LED灯珠对济南广告字的影响有哪些

页面更新时间:2015-09-16 09:52 来源:未知 作者:admin 点击:
1、视角
 
1, perspective
 
济南广告字的视角决定于led灯珠的视角。目前户外显示屏大多选用水平视角100°;、垂直视角50°;的椭圆LED,户内显示屏则选用水平垂直均为120°;的贴片led。高速公路上的显示屏由于其特殊性一般选用30°;视角的圆形LED就够了。一些高楼上的显示屏对垂直视角要求较高。视角与亮度互为矛盾,大视角必然会降低亮度。视角的选择需要根据具体的用途来决定。
 
Ji'nan advertising from the perspective of word depends on the LED lamp perspective. The outdoor display most of the selection of the horizontal angle 100 degrees; and the vertical angle of 50 degrees; the elliptical led, the indoor display selection of horizontal and vertical is 120 degrees; SMD LED. Because of the special nature of the display, the display of the highway is 30 degrees; the circular LED is enough. Some tall buildings on the vertical angle of the display requirements. Angle of view and brightness are contradictory, the big angle of view is bound to reduce the brightness. The choice of the angle of view needs to be determined according to the specific purpose.
 
2、亮度
 
2, brightness
 
LED亮度是济南广告字 http://www.gift4yu.com/ 亮度的决定因素。LED亮度越高,使用电流的余量越大,对节省耗电、保持LED稳定有好处。LED有不同的角度值,在芯片亮度已定的情况下,角度越小,LED则越亮,但显示屏的视角则越小。一般应选择100度的LED以保证显示屏足够的视角。针对不同点间距和不同视距的显示屏,应在亮度、角度和价格上找到一个平衡点。
 
LED brightness is the decisive factor of Ji'nan advertising word brightness. The higher the brightness of LED, the greater the use of the margin of the current, to save power consumption, to maintain the stability of LED. LED has different angle value, in the case of the chip brightness has been set, the smaller the angle, the more bright LED, but the smaller the display screen. Generally 100 degrees of LED should be chosen to ensure that the display screen is enough. In the light of the different points of the screen, the screen should be found on the brightness, the angle and the price.
 
3、失效率
 
3, the loss of efficiency
 
由于济南广告字由上万甚至几十万组红、绿、蓝三种LED组成的像素点组成,任一颜色LED的失效均会影响显示屏整体视觉效果。一般来说,按行业经验,在led显示屏开始装配至老化72小时出货前的失效率应不高于万分之三(指led灯珠本身原因引起的失效)。
 
As the Ji'nan advertising word by tens of thousands or even hundreds of thousands of LED, green, blue three kinds of LED composed of pixels, any color of the failure will affect the overall visual effect of the display. Generally speaking, according to the experience in the industry, in the LED display monitor begin assembling to aging for 72 hours prior to shipment of failure rate should not be higher than three ten thousandths to LED lamp bead itself reason caused the failure).
 
4、抗静电能力
 
4, anti-static ability
 
LED是半导体器件,对静电敏感,极易引致静电失效,故抗静电能力对济南广告字的寿命至关重要。一般来说,LED的人体静电模式测试失效电压不应低于2000V。
 
LED is a semiconductor device, which is sensitive to the static electricity, and it can easily lead to the failure of the static electricity. Therefore, it is very important to resist the static power of the Ji'nan advertising words. In general, the LED of the human body static mode test failure voltage should not be less than 2000V.
 
5、寿命
 
5, life
 
LED器件的理论寿命为10万小时,远大于济南广告字其它部件的工作寿命,故只要LED器件品质保证、工作电流合适、PCB散热设计合理、显示屏生产工艺严谨,LED器件是济南广告字整机中最耐用的部件之一。
 
LED device's theoretical life is 100000 hours, far greater than the Ji'nan advertising word other parts of the working life, so as long as the LED device quality assurance, working current, PCB cooling design reasonable, display production process is rigorous, LED device is one of the most durable parts of Ji'nan advertising word.
 
LED器件占济南广告字价格比重的70%,所以说LED器件可以决定LED显示屏质量的优劣。我国即是LED器件的生产大国,也是led显示屏制做的聚集地。led显示屏的高技术要求是未来的发展趋势,LED显示屏的高质量要求,不仅仅关于LED显示屏厂商的走向,也牵连的LED显屏器件厂家的发展。从LED器件把关,促进中国由LED显示屏制造大国向LED显示屏制造强国的转变。
 
LED devices accounted for 70% of the proportion of ad in Ji'nan, so that the LED device can determine the quality of LED display. China is the production of LED devices, but also the LED display system to do the gathering place. LED display of high technical requirements is the development trend of the future, LED display of high quality requirements, not only on the trend of LED display manufacturers, but also implicated in the development of LED display device manufacturers. From the LED device to promote China by LED display manufacturing power to the LED display manufacturing power shift.
 
6、衰减特性
 
6, attenuation characteristics
 
济南广告字长时间工作后会出现亮度下降和显示屏颜色不一致的现象,主要是由于LED器件的亮度衰减造成的。LED亮度的衰减会造成显示屏整屏亮度降低。红、绿、蓝LED亮度衰减幅度的不一致会造成LED显示屏颜色的不一致,就是我们常说的显示屏花了的现象。高品质的LED器件能够很好地控制亮度衰减幅度。按1000小时常温点亮20mA标准,红色衰减应小于2%,蓝、绿色衰减应小于10%,故蓝、绿色LED在显示屏设计时尽量不要用到20mA电流,最好只用70%至80%的额定电流。
 
Jinan advertising word time work will appear after the poor brightness and display color inconsistency phenomenon, mainly due to the attenuation caused by the brightness of the LED device. The attenuation of LED brightness will cause the screen brightness to reduce. Red, green, blue LED brightness attenuation of the inconsistency will cause the color of LED display is not the same, that is, we often say that the phenomenon of the display. High quality LED device can control the magnitude of the brightness attenuation. According to 1000 hours at room temperature 20mA standard, red attenuation should be less than 2%, blue, green attenuation should be less than 10%, so blue, green LED in the design of the display as far as possible do not use 20mA current, preferably only 70% to 80% of the rated current.
 
衰减特性除与红、绿、蓝LED本身特性相关外,使用电流、PCB板散热设计、济南广告字使用环境温度等均对衰减造成影响。
 
In addition to the characteristics of the red, green and blue LED itself, the use of electric current, PCB plate heat dissipation design, the use of environmental temperature in Ji'nan advertising, such as the impact of the attenuation.
 
7、尺寸
 
7, size
 
LED器件的尺寸影响济南广告字的像素点距离,即分辨率。5mm的椭圆灯主要用于P16以上的户外显示屏,3mm的椭圆灯主要用于P12.5、P12、P10的户外显示屏,3528型贴片led主要用于P6、P8的户内显示屏,5050型贴片LED主要用于P16、P12.5等半户外显示屏。在点间距不变的前提下,LED器件尺寸增大,能够增加显示面积,减少颗粒感,不过由于黑区面积减少,会降低对比度;相反,LED尺寸减小,减少了显示面积,颗粒感增多,黑区面积增大,增加了对比度。
 
The size of the LED device affects the pixel point range of the Ji'nan advertising word, that is, the resolution. 5mm oval lamp is mainly used for p16 above outdoor display, 3mm oval lamp is mainly used for P12.5, p12, P10 outdoor displays, 3528 SMD type LED is mainly used for P6 and P8 indoor display, 5050 SMD type LED is mainly used for p16, P12.5, semi outdoor display. On the premise that the point spacing is constant, the size of the LED device can increase the area of the display area, reduce the particle size, but because of the decrease in the area of the black area, it will decrease the contrast, the LED size decreases, the area of the display area and the area of the black area increases, the contrast is increased.
 
8、一致性
 
8, consistency
 
济南广告字是由无数个红、绿、蓝LED组成的像素拼成的,每种颜色LED的亮度、波长的一致性决定了整个显示屏的亮度一致性、白平衡一致性、色度一致性。一般来说,济南广告字厂家要求器件供应商提供5nm的波长范围及1:1.3的亮度范围的LED,这些指标可由器件供应商通过分光分色机进行分级达到。电压的一致性一般不做要求。
 
Advertising words in Jinan is composed of numerous red, green and blue LED pixel spell, the consistency of each color LED brightness and wavelength determines the entire screen brightness uniformity, white balance consistency, color consistency. Generally speaking, Jinan word advertisement manufacturers request device vendors provide 5 nm wavelength range and 1:1.3 brightness range of LED, these indicators can be by supplier device through optical scanner to classification to achieve. Voltage consistency is generally not required.
 
由于LED是有角度的,故全彩led显示屏同样具有角度方向性,即在不同角度观看时,其亮度是会递增或递减的。这样,红、绿、蓝三种颜色LED的角度一致性将严重影响不同角度白平衡的一致性,直接影响显示屏视频颜色的保真度。要做到红、绿、蓝三种LED在不同角度时亮度变化的匹配一致性,需要在封装透镜设计、原物料选择上严格进行科学设计,这取决于封装供应商的技术水平。法向方向白平衡再好的显示屏,如果LED的角度一致性不好,整屏不同角度的白平衡效果将是糟糕的。led灯珠的角度一致性特性可用LED角度综合测试仪测出,对于中、高档显示屏尤为重要。
 
Because the LED is angled, so full color LED display screen has the same angle, namely when viewed at different angles, its brightness is incremented or decremented. In this way, red, green, blue three colors of the angle of the LED will seriously affect the consistency of different angles, directly affect the color of the screen video fidelity. To achieve the matching consistency between red, green, and blue three LED brightness changes in different angles, the need to design the packaging lens, the selection of raw materials for scientific design, which depends on the technical level of packaging suppliers. Method to balance the good in the direction of the display, if the LED perspective is not good, the whole screen different angles of the white balance effect will be bad. Measured LED bulb angle consistency properties available LED angle tester, for high-end display, is particularly important.

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