At present, in the field of display devices, both LED displays and LCD splicing screens are widely used LED large-screen products. So do you know the difference between a full-color LED display and an LCD splicing screen?
The difference between full-color LED display and LCD splicing screen
1. From the comparison of display effects, the final effect of the display device is the core selection criterion, and different display technologies must have some differences in display effects.
2. From the perspective of brightness, the two splicing technologies don't have to worry about not being enough. On the contrary, the small-pitch LED display, which is known for its high brightness, is facing the problem of over-brightness. One of the main technologies for small-pitch LED displays is "low brightness." In contrast, the LCD screen is more appropriate at the brightness level, and is suitable for applications with large display screens. In the contrast index, the small-pitch LED is the highest, but from the demand side, the contrast of the two major technologies exceeds the actual display needs and the resolution limit of the human eye. This makes the contrast effect, the pros and cons of the two technologies more dependent on the optimization of the software, rather than the limit value on the hardware.
3. In terms of resolution (PPI) indicators, although small-pitch LEDs have been breaking through, they still cannot compete with LCD splicing screens. At present, only LCD screens can achieve 2K popularization on 55-inch units. There is hope and popularization in the future. 4K only has LCD screen. For small-pitch LED displays, higher pixel density means that the difficulty of stable design shows an increase in the geometric base. The pixel pitch is reduced by 50 percent , and the backplane density has to be increased by 4 times. This is why the small pitch LED has broken through the bottleneck of 1.{{10}}, 0.8, and 0.6, but only 3.0/2.5 products are used in a large number of applications. In addition, it is worth reminding that the LCD screen has the advantage of pixel density. "The actual value is not very clear. "Because users rarely demand such a high pixel density.
4. The color range is generally not the most concerned direction for splicing wall products. In addition to application scenarios such as broadcasting and television, the splicing wall market has never been strict with regard to the demand for color reproduction range. From a comparative perspective, the small-pitch LED display is a natural wide-color gamut product. The liquid crystal depends on the light source used.
The difference between full-color LED display and LCD splicing screen
5. The color resolution index is the actual viewing experience of the color range on the contrast index. It represents the ability of the display to restore the color. There is no quantitative method for the measurement of this index. However, on the whole, the small-pitch LED depends on the color and contrast. The dual advantage must be the best technology.
6. Refresh frequency is a key indicator to effectively suppress screen flicker. The refresh rate of LED displays is generally very high, and most of the liquid crystals are at the level of 60-120 Hz, which has exceeded the resolution limit of the human eye.
7. Dot defects refer to the probability of defective dots, bright spots, dark dots and color channels in the display device. In this regard, liquid crystal products can also be controlled to an excellent level. In contrast, effective control of dot defects is the main reason for LED displays. One of the technical difficulties, especially as the pixel pitch shrinks, the control difficulty increases geometrically.
The difference between full-color LED display and LCD splicing screen
8. In terms of cell thickness, LCD has inherent advantages, and has been continuously optimizing it, and has been making progress. Although the small-pitch LED display has been ultra-thin, there will not be much room for improvement in the future. In terms of optical pollution and visual comfort, liquid crystals mainly refer to glare and high-frequency blue light, while small-pitch LEDs are caused by excessive brightness and high-frequency blue light.
9. Consumables and core life indicators of the display, mainly refer to the lamp beads and backplane of the LED display, the LCD screen and the light source, the life advantage of the LCD is the most clear in this regard, the overall can reach 100,000 hours, the lamp of the LED display Individual differences in beads and the stability of the backplane determine that the life span of individual splicing bodies of such products is relatively significant, and individual units may soon need to be replaced.
10. Engineering heat dissipation is an inevitable requirement for long-term stable operation of large-size display systems. In this regard, LCD has more significant advantages due to its low power consumption and low power consumption density. Although small-pitch LEDs have the characteristics of low power consumption density, However, the overall power consumption will still be higher. At the same time, the small-pitch LED display products with high heat dissipation requirements also mean that the system noise is higher.
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