What's the difference between LED full-color display and LCD panel?

 

The * end effect of the display device is the selection standard of the * core, and there must be some differences between different display technologies in the display effect. Of course, this is very abstract. For details, please refer to the following table. ?

 

 

Neither of the two splicing techniques need to worry about insufficient use. On the contrary, the small gap LED electronic screen, which is known for its high brightness, is facing the problem of over brightness. In contrast, LCD is more suitable for the application of super large display screen. On the contrast index, the small spacing LED is * but from the demand side, the contrast of the two technologies exceeds the needs of real display and the resolution limit of human eyes. This makes the contrast effect, the quality of the two technologies depends more on the optimization of software, rather than the limit value of hardware.

 

 

Although the small spacing LED has been breaking through, it still can't compete with the LCD splicing screen. At present, only the LCD screen can realize 2K popularization on the 55 inch unit, and the LCD screen is the only one that has the hope and can popularize 4K in the future. For the small spacing LED electronic screen, the higher pixel density means that the difficulty of stability design shows the increase of geometric cardinality, the pixel spacing decreases by 50%, and the backplane density has to be increased by four times, which is why the small spacing LED has broken through the bottleneck of 1.0, 0.8 and 0.6, but it is the root cause of only 3.0/2.5 products that are really widely used. In addition, it is worth mentioning that What's striking is that the "actual value" of LCD with the advantage of pixel density is not very clear, because users rarely need such a high pixel density.

 

 

Color range is generally not the direction of splicing wall products * attention. In addition to the application scenarios such as radio and television, the splicing wall market has never been severe for the demand of color restoration range. From a comparative point of view, small spacing LED is a natural wide color gamut product. The liquid crystal depends on the light source.

 

 

The color resolution index is the actual viewing experience of the color range in the contrast index, which represents the ability of the display * to restore the color finally. There is no way to brighten this index. However, on the whole, the small spacing led must be the * technology with the dual advantages of color and contrast.

 

 

Refresh frequency is the key index to effectively suppress the flicker of screen. The refresh frequency of LED screen is generally very high, most of the liquid crystal is 60-120hz, which has exceeded the resolution limit of human eyes.

 

 

Point defect refers to the probability of bad points, bright spots, dark points and color channels in display equipment. In this respect, LCD products can also be controlled to an excellent level. In contrast, effective control of point defect is one of the main technical difficulties of LED screen, especially with the reduction of pixel spacing, the control difficulty increases into geometric base.

 

 

In terms of cell thickness, liquid crystal has inherent advantages, and it has been continuously optimized and improved; although the small spacing LED display has achieved ultra wide at present, the space for future progress will not be too large.

In terms of optical pollution and visual comfort, liquid crystal mainly refers to glare and high-frequency blue light, while small spacing LED is the problem of over bright and high-frequency blue light.

 

 

It mainly refers to the LED display lamp beads and backplane, LCD screen body and light source. In this aspect, the life advantage of LCD * to be clear, the overall life can reach 100000 hours. The individual differences of LED screen lamp beads and the stability of backplane determine that the life differences between individual splices of such products are significant, and individual units may need to be replaced soon.

 

Engineering heat dissipation is an inevitable requirement for long-term stable operation of large-scale display system. In this respect, liquid crystal has more significant advantages because of its low power consumption and low power density. Although small spacing LED has the characteristics of low power density, the overall power consumption will still be higher. Meanwhile, small spacing LED products with high heat dissipation requirements also mean higher system noise.