What is the difference between LED full color display and LCD splicing screen?

 What is the difference between LED full color display and LCD splicing screen?

01. Display effect

The final effect of interactive LED floor of display equipment is the core selection standard of interactive floor panels, and different display technologies must have some differences in display effect

02. Display brightness

Neither of the two splicing techniques need to worry about being insufficient. On the contrary, the small spacing LED electronic screen known for its high brightness is facing the problem of being too bright - one of the main marketing technical standards of the small spacing LED display electronic screen is "low brightness". In contrast, the LCD is more appropriate in the brightness level, which is suitable for the application of large display screen. On the contrast index, the small spacing LED is interactive floor panels, 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 of the two technologies depends more on the optimization of software than the limit value of hardware.

03. Resolution (PPT) index

Although the small spacing LED has been making breakthroughs, it still cannot compete with the LCD splicing screen. At present, only the LCD screen can achieve 2K popularization on the 55 inch unit, and only the LCD screen is promising and can popularize 4K in the future. For small spacing LED electronic screens, higher pixel density means that the difficulty of stability design shows an increase in geometric cardinality. If the pixel spacing decreases by 50%, the backplane density has to be increased by 4 times. This is why small spacing LED has broken through the bottlenecks of 1.0, 0.8 and 0.6, but it is the fundamental reason why only 3.0/2.5 products are really widely used. In addition, It is worth reminding 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.

04. Color range

Generally, the indicator of color range is not the focus of high brightness outdoor LED floor. In addition to the application scenarios such as radio and television, the demand for color restoration range has never been strict in the splicing wall market. From a comparative point of view, small spacing LED is a natural wide color gamut product. Liquid crystal depends on which light source is used.

05. Color resolution index

The color resolution index is the actual viewing experience of the color range on the contrast index, which represents the ability of the display * to finally restore the color. There is no lighting method for the measurement of this index. However, on the whole, with the dual advantages of color and contrast, the small spacing led must be the technology of full color outdoor LED floor.

06. Refresh frequency

The refresh rate is the key index to effectively suppress the flicker of the screen. The refresh rate of LED screen is generally very high. Most LCD screens are at the level of 60-120hz, which has exceeded the resolution limit of human eyes.

07. Point defect

Point defect refers to the probability of bad points, bright spots, dark spots and color tracks in the display equipment. In this regard, liquid crystal 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.

08. Unit thickness

In terms of cell thickness, liquid crystal has inherent advantages, and it has been continuously optimized and improved; At present, although the small spacing LED display screen has achieved super diversification, there will not be much room for progress in the future.

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

09. Consumables and display core life indicators

It mainly refers to the lamp beads and backplane of LED display screen, LCD screen body and light source. In this regard, the life advantage of LCD interactive outdoor LED floor​ is clear, which can reach 100000 hours as a whole. The individual difference of lamp beads of LED screen and the stability of backplane determine that the life difference between individual splices of this kind of products is significant, and individual units may need to be replaced soon.

10. Engineering heat dissipation

Engineering heat dissipation is an inevitable requirement for the long-term stable operation of large-scale display system. In this regard, 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. At the same time, small spacing LED products with high heat dissipation requirements also mean that the system noise will be higher.