The difference between LCD splicing screen and LED display
With more and more advertising screens in the streets and lanes, customers often consult the difference between LCD splicing screens and led screens. Which is better for LCD splicing screens and LED displays? Huayun Vision for your more comprehensive explanation of the difference between lcd and led in the end? What are the characteristics and main applications of LCD splicing screens and LED displays? Is the difference between led and lcd really so big?
First, what is the LCD? What is an LCD splicing screen?
LCD is the full name of liquid crystal display LiquidCrystalDisplay, mainly TFT, UFB, TFD, STN and other types of liquid crystal display can not locate the program input point on the dynamic link library.
LCD splicing screen is a splicing screen body that realizes large-screen display effect by splicing control software system by means of LCD display unit splicing. At present, the common splicing method is 55 inch / 46 inch / 47 inch / 49 inch 0.88 / 1.7 / 3.5 / 5.5MM ultra narrow side LCD screen splicing system.
Second, what is LED? What is an LED display?
The LED is the abbreviation of LightEmittingDiode. LED applications can be divided into two categories: one is LED display; the other is LED single tube application, including backlight LED, infrared LED and so on. As far as LED displays are concerned, China's design and production technology levels are basically in line with international standards. The LED display screen is a 5000 yuan computer configuration sheet of a display device composed of LED arrays. It adopts low-voltage scanning drive, which has the characteristics of low power consumption, long service life, low cost, high brightness, less failure, large viewing angle and long visible distance.
Third, LCD splicing screen features:
1, high brightness
Compared to TV and computer LCD screens, DID LCD LCD splicing screens have higher brightness. The brightness of a TV or computer LCD screen is generally only 250~300cd/m2, while the brightness of a DID LCD screen can reach 500~700cd/m2.
2, high contrast
DID LCD splicing screen has a 1200:1, even up to 10000:1 contrast ratio, more than double the traditional TV or computer LCD screen, three times the general rear projection.
3, better color saturation
At present, the color saturation of ordinary CRT is only about 50%, and DIDLCD can achieve high color saturation of 80%-92%, thanks to the color calibration technology developed for DID products, through this technology, in addition to the still picture In addition to color calibration, color calibration of dynamic images is also possible to ensure accurate and stable picture output.
4, a wider perspective
PVA (PatternedVerticalAlignment) technology is the "image vertical adjustment technology". With this technology, the viewing angle can be up to 180° (horizontal and vertical).
5, better reliability
The ordinary LCD screen is designed for TV and PC monitors. It does not support continuous use day and night. The DID LCD screen is designed for the monitoring center and display center, and supports continuous use at 7x24 hours.
6, pure flat display
LCD is the representative of flat panel display device, it is a true flat-panel display, with no curvature and large picture, no distortion.
7, ultra-thin narrow-edge design
DID products have the advantages of thin thickness and light weight while having a large display area, which can be easily spliced and installed. The splicing-dedicated LCD screen has an excellent narrow-edge design, so that the edge of the single piece is even below 1 cm, so that the small edge effect does not affect the overall display effect of the entire display.
8, uniform brightness, stable image does not flash
Since each point of the LCD maintains that color and brightness after receiving the signal, unlike the CRT, it is necessary to constantly refresh the pixel points. Therefore, the LCD has uniform brightness, high image quality, and absolutely no flicker.
9, 120HZ multiplier refresh rate
The 120Hz multi-frequency liquid crystal display technology of DID products can effectively solve the tailing and blurring during rapid motion of images, enhance the sharpness and contrast of images, make the picture clearer, and the eyes are not easy to fatigue for a long time.
10, longer service life
The LCD screens used in ordinary NB, PC and TV have a backlight life of 10,000 to 30,000 hours, while the lifetime of DIDLCD LCD backlights can reach 50,000-100,000 hours, which ensures splicing. The brightness, contrast and chromaticity of each LCD screen used in the display is consistent after a long period of use, and the life of the display is not less than 50,000 hours.
LED display application:
LED display can display changing text, graphic images and numbers; it can be used not only in indoor environment but also in outdoor environment. It has the advantages that liquid crystal display, projector and TV wall can't match. It is widely used in stations, terminals and airports. , hotels, banks, securities markets, construction markets, taxation, shopping malls, hospitals, finance, industry and commerce, post and telecommunications, sports, advertising, factories and mines, transportation, education systems, auction houses, industrial enterprise management and other public places.
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