Oled Screen Disadvantage.LCD display is better? LED display and LCD display are often compared. Which one is better?
To understand this question, first of all, you need to understand the working principle of LED display and LCD display.
LED panel is a display screen used to display text, graphics, images, animation, market, video, video and other information by controlling the display mode of semiconductor light-emitting diodes. Through proper connection of LED chips (including series and parallel connection) and proper optical structure. The light emitting segment or light emitting point of the light emitting display can be formed. These light emitting segments or points can form digital tubes, symbol tubes, meter tubes, matrix tubes, level display tubes, etc.
LCD display is an active matrix LCD driven by thin film transistor (TFT). It mainly uses current to stimulate liquid crystal molecules to generate dots, lines and surfaces to form a picture with the back lamp. The working principle of LCD display is: under the effect of electric field, the arrangement direction of liquid crystal molecules changes to change (modulate) the light transmittance of the external light source to complete the electrooptic transformation. Then, the color redisplay in the time domain and space domain is completed by using the different excitation of R, G, and B primary color signals through the red, green, and blue primary color filter films.
First, the picture quality.
LED display screen has higher refresh rate, clarity and brightness than LCD display screen. It is worth noting that the TV industry has introduced a new “Ultra HD Premium” logo, which has been granted to LCD TVs. In other words, LCD display technologies are capable of presenting top quality high-definition images.
Second, energy consumption.
As far as the LED light source is concerned, LED display is an energy-saving and environment-friendly product. Semiconductor LED is an extremely energy-saving light source with a wide range of applications at the current technological level. In fact, LCD displays have fully used LED backlights. Compared with traditional CCFL backlights, LED backlights have obvious advantages, such as low driving voltage, long life, small size, light weight, good color scale performance, more uniform brightness, more environmental protection Impact resistance.
The contrast of high-quality LED display can reach 3000:1, and the contrast of a good LCD panel can basically reach 1000:1. The “dynamic” contrast marked by LCD TV is generally much higher than this value, because it refers to the TV’s ability to adjust the backlight level according to the screen content, not the actual contrast.
Fourth, the splicing function.
LED display can realize seamless splicing of large screen, and can splice various shapes of display according to the needs of the project. When LCD is spliced, the gap between each LCD module is obvious, and the display effect is not satisfactory.
LED pricing is based on square, which is generally differentiated according to the size of point spacing. The higher the point spacing, the cheaper the price. LCD monitors are priced according to the size and type of the screen itself. LCD displays are cheaper than LED displays.
VI. Application Scenarios
LED displays are mainly used for outdoor large advertising screens, while LCD displays should be more widely used, ranging from handheld tablets to large advertising screens. LCD displays can be seen almost everywhere in industrial, commercial and medical industries.