LED energy-saving display "energy saving" in the end is how to achieve

Time:2019-01-09 Views:172

As we all know, China is now moving towards the era of energy saving and environmental protection, and further energy saving of LED display screen has undoubtedly become the support point for this industry.Many enterprises have made improvements in this aspect and to some extent realized the effect of energy saving. However, there is still a long way to go to realize the energy saving in a larger sense, which requires the joint efforts of the whole industry.

LED energy-saving display

Also appear gradually in the market now, a lot of energy-saving LED screen, through the improvement of power supply to the energy saving effect of LED display have significant ascension, attracted many consumers‘ attention, and given the very high expectations, a lot of LED display manufacturers, ready to beat the introduction of the technology, development opportunities.On the basis of the current technology, energy saving led display in the end how to achieve the energy saving effect?

We use a small led module to analyze its power consumption!Is a long express photoelectric launched CYT62726 as drive chip led small module, the power supply voltage of 5 V, first do not calculate power of peripheral devices, because they share in the whole screen, the whole screen on the power consumption of all lights, first light power point for the Uvf Pled = n * * Iled (n as the channel number, the Uvf pressure drop for the led lamp damage Iled to set the current value) CYT62726 driver IC pin voltage is 0.6 V or so commonly, red, green and blue light point voltage of 1.8 V, respectively 3.0 V,3.0 V so that each channel just 4 V (3.0 + 0.6 V) can work normally, conservative point can be set to 2.8 V, the red light channel blue green channel and actually our power supply voltage of 3.8 V to 5 V, is equivalent to increase the 1 V * Iled inside the IC power consumption, so as you can imagine as long as red power supply fell to 2.8 V, 3.8 V, 3.8 V, blue we can save the add on IC channel 1 V * Iled, power consumption under the condition of invariable in other devices can realize energy-saving led display at least more than 15%,In addition, the cooling requirements of LED screen itself can be reduced to achieve a certain degree of energy saving, which is a large number for a large screen, I believe customers will be happy to accept.

To sum up, the realization of "led energy-saving display" mainly starts from the power supply. In the existing led display, half bridge or full bridge high-efficiency switching power supply is directly adopted, and synchronous rectification has significant energy saving effect.To drive IC constant current state as far as possible to reduce the power supply voltage, through the red, green and blue core separate power supply to achieve better energy saving effect.Of course, the cost of such non-standard voltage power supply and the application of new technology will inevitably rise.From the IC screen drive, energy saving is not obvious, reducing the drive constant current differential pressure will also bring new problems including cost.