Low Current LED Display-energy saving LED screen
When produce the led display, the manufacturer should design the current input value to the LED. A low current input would be good to the led screen's lifetime.
And actually it's the very first process, when receive the LED from the material suppliers. The manufacturers would firstly test the LED's characteristics especially the brightness performance. In this way, the manufacturers would determine the current input value. So here's one question why. And the answer is very easy to understand - the led screen brightness could be partly determined by the current input. For the same LED, a higher current input would enhance the brightness higher. So there are some manufacturers buying low quality LED, and improve the brightness of LED display with the method of enhancing the current to the LED. That is very harmful because it would make the LEDs on the led displays fast attenuate, and finally the led display's lifetime would be short.
This kind of "tricky" from some other led display manufacturers has always disturbs our sales department, when in a competition. We always carry on the policy of good quality, but the price we offer could never be lower than some others because we choose only good materials. But our continuous growing with no serious client complaints would prove our principle right.
Now let's go back to the current design of LED display. What's the current value is good? The nominal current to the LED is 20mA. And in practical usage, the maximum current input should not exceed the 80% of the nominal current input. It is well known that the high current input would generate more heat. So the low current input would be good to the cooling of the led display. Especially for the small pixel pitch led displays, the current input should be as low as possible. As well, according to the experience, the RED, GREEN, BLUE LEDs are not accordant in the attenuation speed, and actually the GREEN, BLUE LEDs attenuates faster than RED LED, so the current input to the GREEN, BLUE LED should be even lower than to RED LED.
And now, we could answer another question: in the street, you may see some LED displays appears "red" or "pink" when in white color. That's partly caused by the suppliers' non-considerate on the current input value design - the GREEN, BLUE LEDs have attenuated, but the RED not that much.
At last, and mostly easy to understand is that the lower current input will make the led display lower power consumption. So as a conclusion, the low current led display is good.
And actually it's the very first process, when receive the LED from the material suppliers. The manufacturers would firstly test the LED's characteristics especially the brightness performance. In this way, the manufacturers would determine the current input value. So here's one question why. And the answer is very easy to understand - the led screen brightness could be partly determined by the current input. For the same LED, a higher current input would enhance the brightness higher. So there are some manufacturers buying low quality LED, and improve the brightness of LED display with the method of enhancing the current to the LED. That is very harmful because it would make the LEDs on the led displays fast attenuate, and finally the led display's lifetime would be short.
This kind of "tricky" from some other led display manufacturers has always disturbs our sales department, when in a competition. We always carry on the policy of good quality, but the price we offer could never be lower than some others because we choose only good materials. But our continuous growing with no serious client complaints would prove our principle right.
Now let's go back to the current design of LED display. What's the current value is good? The nominal current to the LED is 20mA. And in practical usage, the maximum current input should not exceed the 80% of the nominal current input. It is well known that the high current input would generate more heat. So the low current input would be good to the cooling of the led display. Especially for the small pixel pitch led displays, the current input should be as low as possible. As well, according to the experience, the RED, GREEN, BLUE LEDs are not accordant in the attenuation speed, and actually the GREEN, BLUE LEDs attenuates faster than RED LED, so the current input to the GREEN, BLUE LED should be even lower than to RED LED.
And now, we could answer another question: in the street, you may see some LED displays appears "red" or "pink" when in white color. That's partly caused by the suppliers' non-considerate on the current input value design - the GREEN, BLUE LEDs have attenuated, but the RED not that much.
At last, and mostly easy to understand is that the lower current input will make the led display lower power consumption. So as a conclusion, the low current led display is good.
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| led display current test |
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