The difference between LED, VFD, LCD and OLED display

- Nov 01, 2018-


   LED - Light Emitting Display is just a light-emitting diode .

   VFD - Vacuum Fluorescent Display,

   The display image is a fixed LCD - Liquid Crystal Display, which is a general LCD screen.

   Mobile screens are mostly OLEDs - Organic Light Emitting Disp

    What’s difference?

   LED - Light Emitting Display is just a light emitting diode

   VFD - Vacuum Fluorescent Display, the display image is fixed

   LCD - Liquid Crystal Display, is the general LCD screen, most of the mobile screen

   OLED-Organic Light Emitting Display, which does not require a backlight, uses a very thin coating of organic materials and a glass substrate that emits light when current is passed through it. The OLED display screen is thinner and lighter than the LCD.


Resolution: LED has the lowest resolution, VFD is second, OLED is higher, and LCD is the highest. The resolution here refers to the interval between display units on their pattern, regardless of the size of the display unit itself.


Contrast: OLED has the highest contrast, VFD is second, LED is slightly worse (not necessarily), LCD is the worst (not necessarily)


Brightness: OLED is the highest, LED is also the highest, VFD is second, LCD is the worst (not necessarily)


Chromaticity: OLED is the best, LED is second, LCD is slightly worse (not necessarily), VFD is the worst

Response speed: OLED and VFD are better, LED and LCD are worse.


   VFDs have filaments and grids, as well as features due to the presence of these components. These are achievable. At least I can see it.

   The color of the VFD is small and the color area is fixed. There are many other colors, but they are basically sub-regional color development, but different things, the size of the area is different, and sometimes the naked eye can not directly distinguish it.

   At present, the commonly used OLED seems to be unable to achieve full color, at least in ordinary civilian products, although technically possible.

   OLED (Organic Light Emitting Diode) is essentially different from the conventional LCD display method mentioned above. It does not require a backlight, uses a very thin coating of organic material and a glass substrate that glows when current is passed through it. Therefore, the OLED screen can be lighter and thinner, has a larger viewing angle, and is also more power efficient. OLED screen display response time (less than 10ms) and color is better than TFT LCD screen, more flexible characteristics, its component structure is simpler than the current popular TFT LCD screen, the production cost is only about 30 to 40% of TFT LCD. The range of applications in the future is extremely wide. However, the current OLED screen is still in the research and development stage, and the technical problems such as short service life and inability to make the screen larger can be solved.


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