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

1, display effect

The final effect of the display device is the * core selection criteria, and different display technologies must have some differences in the display effect. Of course, this is very abstract. For details, please refer to the following table.

2, display brightness

There is no need to worry about the two stitching techniques. On the contrary, the small-pitch led electronic screen, which is known for its high brightness, faces the problem of over-brightness. A major marketing technology level of the small-pitch led display electronic screen is “low brightness”. In contrast, the LCD screen is more suitable for brightness levels, suitable for applications with large display screens. Above the contrast indicator, the small pitch led is *, but from the demand side, the contrast of the two technologies exceeds the need of real display and the resolution limit of the human eye. This makes the contrast effect more dependent on the optimization of the software, rather than the hardware limit.

3. Resolution (PPT) indicator

Although the small-pitch led has been breaking through, it still can't compete with the LCD splicing screen. At present, only the LCD screen can be popularized on the 55-inch unit. The future is promising and can only popularize 4K and only the LCD screen. For small-pitch LED electronic screens, higher pixel density means that the difficulty of stability design shows a geometric base increase, the pixel pitch is reduced by 50%, and the backplane density has to be increased by 4 times. This is why the small pitch is LEDs have broken through the bottlenecks of 1.0, 0.8 and 0.6, but the real reason for the huge number of applications is only 3.0/2.5. 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 need such high pixel densities."

4, color range

The color range is generally not the direction of the splicing wall product*. In addition to the application scenes such as broadcasting and television, the splicing wall market has never been harsh. From a comparative perspective, small pitch led is a natural wide color gamut product. The liquid crystal depends on which light source is used.

5, color resolution indicators

The color resolution indicator is the actual viewing experience of the color range on the contrast indicator, which represents the ability of the display* to restore color. The determination of this indicator is not brightened, but overall, the small pitch led by color and contrast The dual advantage is necessarily the technology of *.

6, refresh frequency

The refresh rate is a key indicator for effectively suppressing the flickering of the screen. The refresh rate of the Led screen is generally high, and the liquid crystal is mostly 60-120 Hz, which has exceeded the resolution limit of the human eye.

7, point defects

Point defect refers to the probability of display device with dead pixels, bright spots, dark spots and color channels. In this respect, liquid crystal products can also be controlled to an excellent level. In contrast, effective control point defects are the main technical difficulties of led screens. First, especially as the pixel pitch is reduced, the control difficulty becomes a geometric base.

8, unit thickness

In terms of cell thickness, liquid crystal has innate advantages, and has been continuously improving it. It has been improving; the small-pitch LED display has achieved super-both, but the future progress space will not be too large.

In terms of optical pollution and visual comfort, liquid crystal mainly refers to glare and high-frequency blue light, and small-pitch LED is an issue of excessive brightness and high-frequency blue light.

9, consumables and display core life indicators

Mainly refers to the led and back panel of the led display, the screen body and the light source of the liquid crystal. In this respect, the life expectancy of the liquid crystal* is clear, the overall can reach 100,000 hours, the individual differences of the led bead of the led screen and the stability of the backboard The problem determines the difference in life between individual splicing bodies of such products, and individual units may need to be replaced soon.

10, engineering heat dissipation