LED lighting: LED and LCD only differ by one letter, and they are both short terms. Moreover, when both LED and LCD are used simultaneously, their frequency is quite high, so it's easy to confuse them. Many people may not have fully understood the difference between LED and LCD? In simple terms, the colors displayed by LED are more gentle, with the same light intensity at the center and edges of the screen, making it barely noticeable, suitable for long gaming sessions. On the other hand, LCD has a higher light intensity, which might cause some fatigue over long periods, but due to its higher light intensity, the colors appear more vibrant, making it ideal for watching movies. There is a slight difference in light intensity between the center and edges of the screen, with the edges being slightly darker, but this doesn't significantly affect the viewing experience.
LED stands for Light Emitting Diode (LED), and when we refer to LED in this context, we mean liquid crystal displays that use LEDs as a light source. LCD refers to Liquid Crystal Display (LCD), which uses CCFL (Cold Cathode Fluorescent Lamp) as its light source. They differ in their backlight sources.
Compared to LCD panels using CCFL (Cold Cathode Fluorescent Lamp) as a light source, LCD panels using LED backlights have three main advantages:
1. LCDs with LED backlighting can be made thinner. The thickness of an LED screen notebook panel is about half that of a regular CCFL screen.
2. They have a longer lifespan, lower power consumption, and are more environmentally friendly. The lifespan of an LED can reach up to 100,000 hours, allowing continuous use for 27 years even if used for 10 hours a day. After adopting the LED backlight system, energy consumption can be significantly reduced, saving 48% compared to typical CCFL LCD screens. Additionally, LEDs do not contain harmful elements like mercury, unlike CCFLs which do contain mercury.
3. LED backlight screens offer much better color representation than CCFL. Due to issues like color purity, CCFL backlit screens perform poorly in color gradients, leading to inferior grayscale and color transitions in LCDs compared to CRTs. According to tests, CCFL backlit screens can only achieve 78% of the NTSC color gamut, while LED backlit screens can easily achieve 100% of the NTSC color gamut. In terms of color representation and gradient transitions, LED backlighting has significant advantages.
LED applications can be divided into two categories: one is single LED applications, including backlight LEDs, infrared LEDs, etc.; the other is LED displays. Currently, China still lags behind internationally in the manufacture of LED base materials, but regarding LED displays, China's design and production technology levels are basically on par with international standards. An LED display is a display device composed of arranged light-emitting diodes. It uses low-voltage scanning drive, featuring low power consumption, long lifespan, low cost, high brightness, few faults, wide viewing angle, and long viewing distance.
Compared to LCD displays, LED displays have advantages in brightness, power consumption, viewing angle, and refresh rate. The power consumption ratio of LED to LCD is approximately 10:1, and the higher refresh rate allows LED to perform better in video aspects, providing a wide viewing angle of up to 160 degrees. It can display various texts, numbers, colored images, and animation information, and also play TV, video, VCD, DVD, and other colored video signals. Multiple LED displays can also be networked for broadcast. Organic LED display elements react 1000 times faster than LCD screens and can be viewed clearly even under strong light and in temperatures as low as -40 degrees Celsius. Using LED technology, it is possible to create displays that are thinner, brighter, and clearer than LCDs, offering broad application prospects.
In short, LCD and LED are two different display technologies. For large screens, LCD is composed of liquid crystals, while LED is composed of light-emitting diodes. Compared to LCD displays, LED displays have advantages in brightness, power consumption, viewing angle, and refresh rate.
OLED: Organic Light Emitting Display, known as organic light-emitting displays, is a new rising type in mobile phone LCDs, hailed as the "dream display." OLED display technology differs from traditional LCD display methods as it does not require backlight lamps but instead uses very thin organic material coatings and glass substrates, which emit light when current passes through them. OLED display screens can be made lighter and thinner, with larger viewing angles, and significantly save energy. However, although the superior OLED technology of the future will replace TFT and other LCDs, organic light-emitting display technology still has shortcomings such as a shorter lifespan and difficulty in enlarging the screen size.
● This article "Difference Between LED and LCD [Latest and Most Comprehensive Explanation]" comes from the official website of Lianchengfa Group, welcome to reprint.
● Link address: http://www.lcf-led.cn/news/LEDxinwen_view490-108.html