Shenzhen Lianchengfa Technology Co., Ltd.

In today's display technology field, LED display and liquid crystal display is the most widely used two types, they each have unique features and advantages, applicable to different scenes and needs. LCF editorial will be in this article in-depth discussion of the difference between LED display and liquid crystal display, to help you better understand the two display technologies.

1, display principle

LED display

LED display is a kind of display by controlling the semiconductor light-emitting diode. It consists of a tiny LED light beads, which can emit red, green and blue coloured light. By mixing them in different proportions, a variety of rich colours can be produced. When the current passes through the LED chip, the electrons and holes compound and release energy in the form of photons, thus realising light emission.The brightness of the LED display is high because each LED bead can emit light independently and has a fast response speed, which can realise the switching and changing of the screen in a short period of time.

Liquid Crystal Display

Liquid crystal display (LCD), on the other hand, uses changes in the arrangement of liquid crystal molecules to control the passage of light or not. It is mainly composed of a liquid crystal panel, backlight, polariser and so on. Liquid crystal molecules themselves do not emit light and rely on the backlight to provide light. When the light from the backlight source passes through the LCD panel, the polarisation direction of the light can be changed by controlling the arrangement direction of the liquid crystal molecules, so as to achieve the control of light passage. Then through the role of colour filters, it can display images of various colours. The advantages of liquid crystal display is a delicate image display, high colour reproduction, but relative to the LED display, its brightness and response speed is slightly inferior.

2, display effect

Contrast

LED display has a greater advantage in contrast. As the LED lamp beads can achieve a completely closed state, when the display of black, can really do not light, so as to achieve a very high contrast, making the picture more rich sense of hierarchy, black is more deep, white is more bright. In contrast, when LCD displays black, the liquid crystal molecules only block light by changing their arrangement, but a certain amount of light will still leak out, resulting in less pure black and a relatively low contrast ratio.

Viewing Angle

The viewing angle of LED display is relatively wide, generally can reach 160 degrees or even greater range of viewing angle. Viewed at different angles, the brightness of the screen and colour changes are small, to ensure that the audience can clearly see the content of the screen in a wide range. The viewing angle of the LCD screen, on the other hand, is relatively narrow, especially in the early days of the LCD screen, when deviating from the vertical angle is large, there will be colour distortion and brightness drop. Although with the development of technology, the viewing angle of the current LCD display has improved greatly, but there is still a gap with the LED display.

Colour performance

LED display can present very bright and rich colours. Its wider colour gamut can cover more colours, making the picture more vivid and realistic. LCD displays perform better in terms of colour reproduction and can accurately reproduce the original colours of the image, but may be slightly inferior to LED displays in terms of colour vibrancy. However, for some of the higher requirements for colour accuracy in the professional field, such as photography, design, etc., LCD display is still a good choice.

3, the application scene

LED display

Because LED display has high brightness, good waterproof, durability, splicability and other characteristics, it has been widely used in outdoor advertising, large stadiums, stage performances, traffic hubs and other places. For example, on large outdoor billboards, LED display can still be clearly visible under strong light, attracting people's attention; in sports stadiums, it can provide the audience with clear game images and real-time score information; in stage performances, LED display can enhance the visual impact of the performance through brilliant images and dynamic effects.

Liquid Crystal Display

LCD display is more suitable for indoor environment, such as home TV, computer monitors, conference room displays and so on. With its fine image display and accurate colour reproduction, it can provide a good visual experience for daily applications such as watching movies and TV series, processing documents and performing graphic design. In addition, the power consumption of the LCD screen is relatively low, small heat generation, more energy efficient and environmentally friendly, suitable for long time use.

4, cost and price

Purchase cost

Generally speaking, the same size and resolution, the purchase cost of LED display is higher than the LCD display. This is mainly because the LED display manufacturing process is relatively complex, requires a large number of LED lamp beads and supporting drive circuit, and in the technical research and development and production equipment investment is also larger. Liquid crystal display production technology has been relatively mature, the industrial chain is more complete.

Cost of use

In terms of the cost of use, the power consumption of LED display is relatively high, especially in the case of high brightness, it will consume more electricity. In addition, although the service life of the LED display is long, if individual LED lamp beads in it are damaged, it may affect the display effect of the whole screen, and the maintenance cost is also relatively high. Liquid crystal display lower power consumption, service life is also longer, and in the event of failure, maintenance is relatively simple, low cost.

LED display and LCD display have their own advantages and disadvantages, they are in the display principle, display effect, application scenarios, the cost of price and other aspects of the existence of obvious differences. LCF editorial advice users in the choice, should be based on their actual needs and use of the scene to make comprehensive consideration. If you need to use in outdoor or large places, the pursuit of high brightness, wide viewing angle and shocking visual effect, then the LED display is a better choice; and if it is in the indoor environment, pay attention to the fineness of the image and the accuracy of the colours, as well as on the cost and power consumption have certain requirements, LCD display is more appropriate. With the continuous development of science and technology, I believe that these two display technologies will also continue to innovate and improve, to bring people a better visual experience. LCF is a set of research and development, intellectual property, sales, operation, service in one of the national speciality and speciality new small giant enterprises, national high-tech enterprises. If you need to buy LED electronic display friends can also directly contact the LED display manufacturer LCF, big country brand, trustworthy!