From the display effect to compare the final effect of the display equipment is the most core purchase standard, and different display technologies must have some advantages and disadvantages in the effect, the specific comparison parameters LED display LCD splicing screen brightness high moderate contrast high general resolution Generally, the high color range depends on the light source.
In terms of brightness, there is no need to worry about the two splicing technologies being insufficient. On the contrary, the small-pitch LEDs, which are known for their high brightness, face the problem of over-brightness. One of the main marketing techniques for small-pitch LEDs is "low brightness." In contrast, liquid crystal appears more appropriate in terms of brightness level, and is suitable for large display screen applications. In terms of contrast index, the small-pitch LED is the highest, and 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 quality of the two technologies depends more on the optimization of the software, rather than the limit value on the hardware.
In terms of resolution indicators, although small-pitch LEDs have been breaking through, they still cannot compete with LCD splicing. At present, only liquid crystals can achieve the popularization of 2K on 55-inch units, and only LCDs are expected to popularize 4K in the future. For small-pitch LEDs, higher pixel density means that the difficulty of stable design has increased geometrically, the pixel pitch has dropped by 50%, and the backplane density has increased by 4 times. This is the reason why small-pitch LEDs have broken through the bottleneck of 1.0, 0.8 and 0.6, but there are still only 3.0, 2.5, and such products in a large number of applications. In addition, it is worth reminding that the "real value of the pixel density advantage of liquid crystals is not very clear", because users rarely demand such high pixel density.
The color range is generally not the most concerned direction for LCD splicing wall products. In addition to applications such as radio and television, the splicing wall market has never been strict with regard to the demand for color reproduction range. From a comparative perspective, small-pitch LEDs are natural wide-color gamut products. The liquid crystal depends on the light source used.
The color resolution index is the actual viewing experience of the color range on the contrast index, and represents the ability of the display to ultimately restore colors. There is no quantitative method for the determination of this indicator. However, on the whole, small-pitch LEDs must be the optimal technology by virtue of the dual advantages of color and contrast.
LCD (short for Liquid Crystal Display) liquid crystal display.
The structure of LCD is to place a liquid crystal cell between two parallel glass substrates. The lower substrate glass is equipped with a TFT, and the upper substrate glass is equipped with a color filter. The signal and voltage on the TFT are changed to control the rotation direction of the liquid crystal molecules, thereby To achieve the display purpose by controlling whether the polarized light of each pixel point is emitted or not.
Light-emitting diodes are simply referred to as LEDs. It is made of compounds containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N), etc.
