Who is better in the big competition between LED and LCD displays?
LED display screens and LCD displays are two common screen technologies for flat panel televisions, computer displays, and mobile devices. They have significant differences in display principles, performance, energy efficiency, and applications. Today, Hifly Zhixian will explore in detail the differences between LED and LCD displays to help you better understand them.
LCD display screen
1、 Display principle
LCD display screen
LCD is the abbreviation for Liquid Crystal Display, and its working principle involves the manipulation of liquid crystal molecules. Liquid crystal molecules can adjust their orientation through an electric field, thereby controlling the transmission of light. The LCD display screen contains a liquid crystal layer between two glass plates, with liquid crystal molecules arranged between them. The arrangement of liquid crystal molecules is adjusted by changing the electric field to control the brightness and color of each pixel.
LED display screen
LED is the abbreviation for Light Emitting Diode, and LED displays use LED as the backlight or pixel itself. This means that each pixel of the LED display screen is a small LED light, which generates an image by controlling the brightness of the LED. LED displays are usually divided into two types: OLED (Organic Light Emitting Diode) and LED backlight LCD.
LED display screen
2、 Performance Comparison
Contrast
LCD display screen: LCD usually has low contrast, which means that on the same screen, the difference between black and white is not significant enough, so in dark scenes, the image may not appear clear enough.
LED display screen: LED displays typically have higher contrast because they can be completely turned off, producing a true black color, thereby improving the clarity and realism of the image.
Color saturation
LCD display screens: The color saturation of LCD displays is usually low, which means they may not be as good as LED screens in presenting bright and vivid colors.
LED display screen: Due to the self luminous characteristics of LED, LED display screens are usually able to present brighter and more vivid colors, making them more outstanding in visual effects.
Response time
LCD display screen: The response time of LCD display screens is usually longer, which means that blurring or ghosting may occur when displaying rapidly moving images or videos.
LED display screen: LED display screens have faster response time, making them more suitable for displaying dynamic content, reducing blurring and ghosting.
Viewing angle
LCD display screen: The viewing angle of an LCD display screen is usually limited, and if you do not sit directly in front, there may be color distortion or decreased brightness.
LED display screen: LED displays typically have a wider viewing angle, which means that even when viewed from different angles, the image can maintain consistent quality.
3、 Energy efficiency
LCD display screen: LCD displays typically require additional backlight, which is typically provided by fluorescent lamps or LEDs, and these additional light sources consume more energy.
LED display screen: LED display screens can use energy more efficiently because LEDs themselves emit light and do not require additional backlighting. This makes LED displays more efficient in terms of energy efficiency, helping to reduce energy consumption and electricity bills.
4、 Thin design
LCD display screens: LCD displays are usually relatively thick as they require additional backlight and LCD layer. This limits the slim design of the equipment.
LED display screen: LED display screens are usually thinner because the LED itself is very thin and does not require additional backlight. This makes LED screens more flexible in design and can produce thinner devices.
5、 Application field
LCD display screen: LCD display screens are widely used in handheld terminals, smart homes, healthcare, facial recognition, IoT devices, etc.
LED display screens: LED display screens have a wider range of applications, including outdoor billboards, indoor and outdoor LED screens, digital signage, mobile device screens, car dashboards, and more.
There are important differences between LED display screens and LCD displays in terms of display principles, performance, energy efficiency, and applications. Although LCD displays may have certain advantages in certain aspects, LED displays are more outstanding in contrast, color saturation, response time, viewing angle, energy efficiency, and slim design, making them widely used in many applications. The choice of which type of display screen depends on specific application requirements and budget considerations. With the continuous progress of technology, LED displays may continue to develop in the future, providing better performance and a wider range of applications.
