Now LCD advertising machines are everywhere and can be seen everywhere, but what about the accessories of LCD advertising machines? Such as liquid crystal display, then we will introduce the parameter analysis of LED and LCD display and what is the difference?
▪ Resolution: It is the precision of the screen image, which refers to the number of pixels that the monitor can display. Since the points, lines and surfaces on the screen are all composed of pixels, the more pixels the monitor can display, the finer the picture will be. The entire image can be imagined as a large chessboard, and the resolution is represented by all the meridians. and the number of parallel intersections. Also called dot pitch, the higher the density, the clearer the resolution;
▪ Viewing angle: The viewing angle is the angle from which the user can clearly observe everything on the screen from different directions. Viewing beyond this range will result in color distortion. The viewing angle includes two indicators: horizontal viewing angle and vertical viewing angle;
▪ Brightness: refers to the brightness of the screen. Currently, one way to increase the brightness is to increase the brightness of the background light, that is, to increase the number of LED tubes in the LCD panel; (unit: lumens)
▪ Contrast: Contrast is the ratio of the brightness of the same point on the screen when it is the brightest (white) to the darkest (black). High contrast means relatively high brightness and vividness of colors. The brightness of the panel and the backlight source, and the reasonable combination of the two can obtain a picture with full, bright and clear colors;
▪ Response speed: The often said 5ms and 8ms refer to the response time of the screen, the speed at which each pixel responds to the input signal. The shorter the response time, the less trailing trail will feel when watching dynamic images;
▪ Screen ratio: generally refers to the ratio of screen width and height called screen ratio (or aspect ratio, aspect ratio). At present, the screen ratio of LCD screen is generally 4:3, 16:9 and 16:10.
Liquid crystal: Just like a discolored film, it does not produce brightness itself, and it needs to be illuminated by the light behind it to see the image. Specifically, the performance of the liquid crystal is mainly based on the quality of the display screen;
Comprehensive: The difference between LED and LCD is not very big, just in the backlight, the panels are the same as liquid crystal;
Backlight: LEDs use light-emitting diodes as light sources, and LCDs use fluorescent lamps. Since the power saving and lighting performance of LED is higher than that of LCD, the display performance of LED is better;
LCD: The screen body is relatively thick, the fluorescent lamp is used to emit light, the work is large, and the heat generation and power consumption are large. After 2 to 3 years of use, the screen will become dark and yellow, and the brightness output uniformity is poor;
LED: The backlight itself is a flat light-emitting material, and the screen can be made thinner. LED has more advantages in terms of brightness, fine picture, low power consumption, body size, and lifespan of diode light emission. The work life is 5-8 years;
Target customers: media companies, cultural communication, government enterprises, institutions, project projects;
Common places: hotels, commercial office buildings, exhibition sites, entertainment and leisure places; subway stations, railway stations, airports. Shopping malls, supermarkets, chain stores, specialty stores, convenience stores, promotion counters and other occasions;
Commercial institutions: large shopping malls, specialty stores, franchise stores, hypermarkets, star-rated hotels, restaurants, travel agencies, pharmacies, etc.;
Financial institutions: banks, securities, funds, insurance companies, pawnshops, etc.;
Public utilities: telecommunications, post offices, hospitals, schools, etc.;
Public places: subways, airports, stations, gas stations, toll stations, bookstores, parks, exhibition halls, gymnasiums, museums, conference centers, ticket sales agents, fixed talent markets, lottery centers;
Real estate properties: apartments, villas, office buildings, commercial buildings, model houses, sales offices, etc.;
Entertainment and leisure: cinemas, gyms, resorts, clubs, foot baths, bars, cafes, Internet cafes, beauty salons, golf courses, etc.
