First of all, we need to understand what is the “water ripple” on the display? Its scientific name is also known as: “moire”. When we use a digital camera to shoot the scene, if there is a dense texture, often appear inexplicable water wave-like stripes. This is moire. Simply put, moire is a manifestation of the principle of differential shooting. Mathematically speaking, when two equal-amplitude sine waves of close frequency are superimposed, the amplitude of the synthesized signal will vary according to the difference between the two frequencies.

refresh rate comparison

Why will ripple appear?

• LED display is divided into two types high refresh rate and universal brush, high brush display refresh rate can reach 3840Hz / s, universal brush for 1920Hz / s. High brush and universal brush screen in the playback of video and pictures, with the naked eye, are almost indistinguishable, but through the cell phone and HD camera can be distinguished.
• The general refresh rate of the LED screen in the phone when taking pictures there will be very obvious water ripples, the picture seems to be flickering, while the high refresh rate screen will not have water ripples.
• if the requirements are not high or no shooting requirements can use the general brush, the naked eye to see the difference is not much, the effect is okay, and the price is also affordable. The price difference between a high brush and a universal brush is large, the specific choice depends on the needs of customers and financial budget.

The advantage of choosing a high refresh rate LED display

• refresh frequency is also the speed of screen refresh, refresh times of more than 3840 times per second, we call it high refresh.
• high refresh rate is not easy to appear trailing shadow phenomenon.
• cell phone or camera photo effect, reduce the phenomenon of water ripples, smooth as a mirror.
• the picture texture is clear and delicate, with realistic color, and high restoration.
• high refresh rate display more eye protection, more comfortable.
  Flicker and jitter can cause visual fatigue, and prolonged viewing can cause eye fatigue. The higher the refresh rate, the less damage to the eyes.
• conference rooms, command centers, exhibition halls, business halls, smart cities, smart campuses, museums, troops, hospitals, stadiums, hotels, and other places are using high refresh rate LED displays in order to highlight the importance of their functions.