LED beads have these seven effects on transparent LED displays
LED beads have these seven effects on transparent LED displays
Transparent LED display in the field of commercial display is now very common in a way to promote publicity, we are on the street every day from time to time to see the words and colors on its screen, but then someone will be in the see at the time thought of transparent LED display is what is made, what is the key material, or their overall composition of what components are needed. Today LED Controller tell you, LED lamp beads is the most important transparent LED display screen in a component, it plays an important role.
01, life expectancy
The theoretical life of the LED device is 100,000 hours, much larger than the working life of other parts of the transparent LED display, so as long as the LED device quality assurance, the right working current, PCB heat dissipation design is reasonable, display production process is rigorous, the LED device is one of the most durable components in the display machine.
LED device accounted for 70% of the proportion of transparent LED display price, so that the LED device can decide the quality of transparent LED display advantages and disadvantages. China is the production of LED devices is a big country, but also transparent LED display manufacturing gathering place.
Transparent LED display of high technology requirements is the future development trend, transparent LED display of high quality requirements, not only about transparent LED display manufacturers towards, also implicated in the development of LED display device manufacturers.
02, attenuation characteristics
Transparent LED display after a long time work will appear brightness decline and display color inconsistent phenomenon, mainly due to the brightness of the LED device attenuation caused by the decay of LED brightness will cause the display screen brightness reduction. Red, green, blue LED brightness attenuation amplitude inconsistency will cause the LED display color inconsistency, that is, we often say that the phenomenon of the display is spent.
High-quality LED devices can well control the brightness attenuation. By 1000 hours at room temperature light 20mA standard, red attenuation should be less than 2%, blue, green attenuation should be less than 10%, so blue, green transparent LED display design try not to use 20mA current, it is best to use only 70% to 80% of the rated current.
Attenuation characteristics in addition to the characteristics of red, green, blue LED itself, the use of current, PCB board thermal design, display the use of ambient temperature and so on have an impact on the attenuation.
03, size
LED device size affects the transparent LED display pixel distance, that is, the resolution. 5mm oval lamp is mainly used for P16 outdoor display, 3mm oval lamp is mainly used for P12.5, P12, P10 outdoor display, 3528 chip LED is mainly used for P6, P8 indoor display, 5050 chip LED is mainly used for P16, P12.5 and other half of the LED display, P12.5 and other semi-outdoor display.
Under the premise of the same pitch, the LED device size increase, can increase the display area, reduce the sense of particles, but due to the reduction of the black area, will reduce the contrast; on the contrary, the LED size reduction, reduce the display area, particles increase, the black area increases, increase the contrast.
04, viewing angle
Transparent LED display viewing angle is determined by the viewing angle of the LED lamp beads.
At present, most of the outdoor display choose horizontal viewing angle 100 °, vertical viewing angle of 50 ° of the elliptic LED, indoor display choose horizontal and vertical are 120 ° of the SMD LED. highway display due to its special general selection of 30 °; angle of view of the round LED is enough.
Some of the upper floors of the display on the vertical viewing angle requirements are higher. Viewing angle and brightness are contradictory, large viewing angle will inevitably reduce the brightness. The choice of viewing angle needs to be based on the specific use to decide.
05, brightness
LED brightness is the determining factor of the brightness of the display. the higher the LED brightness, the greater the margin of the use of current, to save power consumption, to maintain the stability of the LED is good.
LED has different angle values, in the case of chip brightness has been determined, the smaller the angle, the brighter the LED, but the display angle is smaller. Generally should choose 100 degrees of LED to ensure that the display sufficient viewing angle.
For different point spacing and different viewing distance of the display, should be in the brightness, angle and price to find a balance.
06, failure rate
As the LED display consists of tens of thousands or even hundreds of thousands of groups of red, green and blue LED pixels, the failure of any color LED will affect the overall visual effect of the display.
Generally speaking, according to industry experience, in the LED display screen began to assemble to aging 72 hours before shipment failure rate should be no higher than three ten thousandths (refers to the LED lamp beads itself caused by the failure)
07, anti-static ability
LED is a semiconductor device, sensitive to static electricity, very easy to cause electrostatic failure, so the anti-static ability is crucial to the life of the display. Generally speaking, LED's human body electrostatic mode test failure voltage should not be less than 2000V.
01, life expectancy
The theoretical life of the LED device is 100,000 hours, much larger than the working life of other parts of the transparent LED display, so as long as the LED device quality assurance, the right working current, PCB heat dissipation design is reasonable, display production process is rigorous, the LED device is one of the most durable components in the display machine.
LED device accounted for 70% of the proportion of transparent LED display price, so that the LED device can decide the quality of transparent LED display advantages and disadvantages. China is the production of LED devices is a big country, but also transparent LED display manufacturing gathering place.
Transparent LED display of high technology requirements is the future development trend, transparent LED display of high quality requirements, not only about transparent LED display manufacturers towards, also implicated in the development of LED display device manufacturers.
02, attenuation characteristics
Transparent LED display after a long time work will appear brightness decline and display color inconsistent phenomenon, mainly due to the brightness of the LED device attenuation caused by the decay of LED brightness will cause the display screen brightness reduction. Red, green, blue LED brightness attenuation amplitude inconsistency will cause the LED display color inconsistency, that is, we often say that the phenomenon of the display is spent.
High-quality LED devices can well control the brightness attenuation. By 1000 hours at room temperature light 20mA standard, red attenuation should be less than 2%, blue, green attenuation should be less than 10%, so blue, green transparent LED display design try not to use 20mA current, it is best to use only 70% to 80% of the rated current.
Attenuation characteristics in addition to the characteristics of red, green, blue LED itself, the use of current, PCB board thermal design, display the use of ambient temperature and so on have an impact on the attenuation.
03, size
LED device size affects the transparent LED display pixel distance, that is, the resolution. 5mm oval lamp is mainly used for P16 outdoor display, 3mm oval lamp is mainly used for P12.5, P12, P10 outdoor display, 3528 chip LED is mainly used for P6, P8 indoor display, 5050 chip LED is mainly used for P16, P12.5 and other half of the LED display, P12.5 and other semi-outdoor display.
Under the premise of the same pitch, the LED device size increase, can increase the display area, reduce the sense of particles, but due to the reduction of the black area, will reduce the contrast; on the contrary, the LED size reduction, reduce the display area, particles increase, the black area increases, increase the contrast.
04, viewing angle
Transparent LED display viewing angle is determined by the viewing angle of the LED lamp beads.
At present, most of the outdoor display choose horizontal viewing angle 100 °, vertical viewing angle of 50 ° of the elliptic LED, indoor display choose horizontal and vertical are 120 ° of the SMD LED. highway display due to its special general selection of 30 °; angle of view of the round LED is enough.
Some of the upper floors of the display on the vertical viewing angle requirements are higher. Viewing angle and brightness are contradictory, large viewing angle will inevitably reduce the brightness. The choice of viewing angle needs to be based on the specific use to decide.
05, brightness
LED brightness is the determining factor of the brightness of the display. the higher the LED brightness, the greater the margin of the use of current, to save power consumption, to maintain the stability of the LED is good.
LED has different angle values, in the case of chip brightness has been determined, the smaller the angle, the brighter the LED, but the display angle is smaller. Generally should choose 100 degrees of LED to ensure that the display sufficient viewing angle.
For different point spacing and different viewing distance of the display, should be in the brightness, angle and price to find a balance.
06, failure rate
As the LED display consists of tens of thousands or even hundreds of thousands of groups of red, green and blue LED pixels, the failure of any color LED will affect the overall visual effect of the display.
Generally speaking, according to industry experience, in the LED display screen began to assemble to aging 72 hours before shipment failure rate should be no higher than three ten thousandths (refers to the LED lamp beads itself caused by the failure)
07, anti-static ability
LED is a semiconductor device, sensitive to static electricity, very easy to cause electrostatic failure, so the anti-static ability is crucial to the life of the display. Generally speaking, LED's human body electrostatic mode test failure voltage should not be less than 2000V.