What screen is led backlight and what is the difference with OLED?

What screen is led backlight

　　LED backlight refers to the use of LED (light emitting diode) as the backlight of the liquid crystal display. Compared with the traditional CCFL (cold cathode tube) backlight, LED has the characteristics of low power consumption, low heat generation, high brightness, long life, etc. It is expected to completely replace the traditional backlight system in recent years.

　　LED backlight can improve the color performance of LCD display. LED light is generated by three separate LEDs, providing a color spectrum that closely matches the LCD image point color filter itself.

Structure of LED backlight

　　LED backlight structure is mainly divided into two types, a single series power supply or multiple sets of series / parallel power supply. Although a single series power supply uses a lower constant current, the input power must be raised to meet the total forward voltage level of the series power supply before it can drive the LED. In contrast, although multiple sets of series/parallel LED power supplies require a higher constant current to drive, they reduce the need for high voltage. The difference in boost converter requirements depends on cost, complexity, and energy conversion efficiency (for users, equivalent to battery life between charge cycles). In the end, the best solution will be determined based on the product characteristics, size and performance requirements of the device itself.

The difference between LED backlight and OLED

　　LED backlight refers to the use of LED (light emitting diode) as the backlight of the liquid crystal display, and the LED backlight display is only the backlight of the liquid crystal display from the traditional CCFL cold light tube (similar to a fluorescent lamp) to the LED (light emitting diode). The imaging principle of the liquid crystal can be simply understood as that the deflection of the liquid crystal molecules by the voltage applied from the outside blocks the transparency of the light emitted by the backlight like a gate, and then the light is projected on the color filters of different colors to form an image.

LED display is a combination of microelectronics technology, computer technology and information processing. With its bright colors, wide dynamic range, high brightness, long life, stable and reliable work, etc., it has become the most advantageous public display medium. LED display It has been widely used in large squares, commercial advertisements, sports venues, information dissemination, press releases, securities trading, etc., and can meet the needs of different environments. The LED display screen is a display method by controlling semiconductor light emitting diodes, and its general appearance is composed of many usually red light emitting diodes, and the characters are displayed by turning the lights on and off. A display screen used to display various information such as text, graphics, images, animations, quotes, videos, and video signals.

OLED display has excellent characteristics such as self-luminous, no backlight, high contrast, thin thickness, wide viewing angle, fast response, can be used in flexible panels, wide temperature range, simple structure and manufacturing process, etc. It is considered to be the emerging application technology of the next-generation flat panel display.

　　 Many netizens tend to associate OLED with LED backlights, which are more hype by manufacturers. In fact, OLED and LED backlights are completely different display technologies. OLED emits light by driving the organic film itself by current, and the emitted light can be monochromatic such as red, green, blue, and white, and can also achieve the effect of full color. Therefore, OLED is a new light-emitting principle different from CRT, LED and liquid crystal technology.

　　 In general, LED display, LED backlight, and OLED are three completely different imaging technologies.

If you want to know more, our website has product specifications for led backlight, you can go to ALLICDATA ELECTRONICS LIMITED to get more information