01. Display Performance
The ultimate effect of display devices is a core selection criterion, and different display technologies undoubtedly have some variations in visual quality. Of course, this is quite abstract; for specific details, please refer to the following table.
02. Display Brightness
Both splicing techniques are more than sufficient. Instead, it's the high-brightness characteristics of the small pitch LED electronic screens that pose an issue—after all, one of the key marketing features of small pitch LED display screens is their "low brightness." In comparison, LCD screens seem more appropriately bright, suitable for applications requiring ultra-large display surfaces. When it comes to contrast ratio, small pitch LED is superior, but from a demand perspective, both technologies' contrast ratios exceed the needs of actual displays and the limits of human eyesight. This means that the quality of the contrast effect is more dependent on software optimization than on the hardware's limit values.
March: Resolution (PPT) Indicator
Although small pitch LED technology has been making breakthroughs, it still cannot compete with LCD splicing screens. Currently, only LCD screens can achieve 2K普及 on 55-inch units, and only LCD screens have the potential to普及4K in the future. For small pitch LED electronic screens, higher pixel density means that the difficulty of stability design increases exponentially. A 50% decrease in pixel pitch requires a 4-fold increase in backplane density. This is why small pitch LED has overcome bottlenecks at 1.0, 0.8, and 0.6, but only products like 3.0/2.5 are truly widely applied. Additionally, it's worth noting that the "actual value" of LCD screens with pixel density advantages is not very clear, as users rarely demand such high pixel density.
04. Color Range
The Color Gamut metric is typically not a focus for mosaic wall products, except in scenarios like broadcasting where it is highly valued. The market for mosaic walls has never demanded strict color gamut accuracy. From a comparative standpoint, SMD LED is naturally a wide-color-gamut product, while LCD depends on the type of light source used.
May 05. Color Resolution Indicator
The color resolution index represents the actual viewing experience of color range on the contrast index, symbolizing the display's ultimate ability to reproduce colors. There is no brightening method for measuring this index, but overall, small-pitch LED, with its dual advantages of color and contrast, is undoubtedly the most advanced technology.
June Refresh Rate
Refresh rate is a crucial indicator for effectively reducing the flicker sensation on screen images. LED screens typically have high refresh rates, with LCDs mostly at 60-120Hz, which already exceed the resolution limit of the human eye.
07. Point Defects
Dot defect refers to the probability of dead pixels, bright spots, dark spots, and color bands in display devices. LCD products can also achieve excellent control in this aspect. In comparison, effectively controlling dot defects is one of the main technical challenges of LED screens, especially as pixel pitch narrows, the difficulty of control increases exponentially.
August: Unit Thickness
In terms of unit thickness, LCDs have an inherent advantage and have been continuously optimized and improving; while small pitch LED displays have already achieved ultra-high definition, their future room for improvement will not be substantial.
In terms of light pollution and visual comfort, LCDs primarily refer to glare and high-frequency blue light, while small-pitch LEDs pose issues with excessive brightness and high-frequency blue light.
09. Consumables and Display Core Lifespan Indicators
The focus is primarily on the LED display's LED beads, back panel, LCD screen body, and light source. Here, the lifespan advantage of LCDs is particularly evident, with an overall lifespan of up to 100,000 hours. The individual variations in LED beads and the stability issues with the back panel determine the significant lifespan differences between individual units, with some components potentially requiring replacement soon.
Engineering Heat Dissipation
Engineering heat dissipation is a necessary requirement for the long-term stable operation of large-sized display systems. In this aspect, liquid crystal has a more pronounced advantage due to its low power consumption and low power density. While small-pitch LED displays also feature low power density, their overall power consumption is still higher. Moreover, the high heat dissipation requirements of small-pitch LED products also imply higher system noise.
