The Difference Between 32 Scan And 64 Scan LED Displays

The “scan” of an LED display refers to the ability of the driver IC to light up the number of rows per unit time, which is directly related to the brightness, refresh rate, stability, power consumption, and production cost of the display screen.

Within the same time period, the screen is divided into 32 or 64 lines that refresh alternately.

1) Under the same current, the brightness of 32 Scan is higher than that of 64 Scan.

Because the lamp is lit for only half the time in a 64 Scan LED lamp compared to a 32 Scan lamp, the brightness of a 64 Scan LED lamp is theoretically only half that of a 32 Scan LED lamp under the same drive current. To compensate for this brightness difference, the 64 Scan solution typically increases the drive current of the LED.

2) Under the same technology, the refresh rate of 32 Scan is lower than that of 64 Scan.

To achieve 64 scans, the LED display screen’s driver IC needs to operate at a higher frequency. This usually means that it needs to support a higher refresh rate cap.

Therefore, when using the same level of driver IC, a 64 Scan screen usually has a higher refresh rate than a 32 Scan screen, and is less likely to produce horizontal stripes (water ripples) during shooting.

3）The 32 Scan design has better stability (lifespan) than the 64 Scan design.

To compensate for insufficient brightness, 64 Scan displays often increase the LED drive current. This higher peak current leads to increased heat generation in the LED chips and driver IC, posing a challenge to component lifespan and overall screen stability. 32 Scan displays, on the other hand, have a relatively gentler current and more stable operation.

4)The power consumption and heat generation of 32 Scans are lower than those of 64 Scans.

64 Scan has a higher peak current, resulting in higher overall power consumption and heat generation.

5）32 Scan images exhibit flickering and ripple effects at low refresh rates, while 64 Scan images are more stable and smoother.

A higher scan line count means a shorter illumination time for each line. Combined with a high refresh rate driver IC, this results in a smoother and more detailed visual experience, especially when playing fast-moving scenes.

In summary, we can also see the cost of these two types of scans; the 64-scan version is more expensive.

This is mainly because the 64-scan solution requires a more powerful and faster driver IC, and it also places higher demands on the PCB (circuit board) wiring process, all of which increase the cost.

 

 

How should we choose between 32 Scan and 64 Scan LED display screens?

Such as stage backdrops, large conference rooms, and shopping mall advertisements where cameras are needed to capture images, or for applications with extremely high visual requirements, a high refresh rate display with 64 Scans (or higher) must be selected to avoid water ripples and flickering.

Generally, the smaller the pixel pitch (such as P2.5, P2, P1.8, etc.), the more likely it is to use 64-scan or higher scanning technology, because small-pitch screens are viewed from a closer distance, and the requirements for refresh rate and image stability are higher.

For general information dissemination, store signs, and other occasions where static or dynamic requirements are not high, and where the budget is limited, a 32 Scan display screen can meet the basic needs.