Do you want to know the difference between LCD, LED, OLED, QLED, ULED, XLED, AMOLED, IPS, TN, VA, and Plasma display? In this article, you can learn the pros and cons of each technology.
What Will I Learn?
- 1 LCD
- 2 LED
- 3 OLED
- 4 AMOLED
- 5 QLED
- 6 ULED
- 7 XLED
- 8 TN
- 9 Advantages of TN Panel
- 10 IPS
- 11 VA
- 12 Plasma
LCD stands for ‘Liquid Crystal Display’. The LCD display uses 2 layers of the polarized glass aligned in parallel. The liquid crystal solution is present between the 2 layers of polarized glass. Each liquid crystal functions like a shutter. The light is passed or blocked by the liquid crystals. Backlighting: The cold cathode fluorescent lamp (CCFL) is used as the backlight for an LCD display. The LCD displays are already replaced by LED displays and it is very rare to find LCD displays on the newer products.
The LED display uses the same technology as the LCD display (everything mentioned for the LCD above) except backlighting. Backlighting: The LED displays use light-emitting diodes (LEDs) as the light source. LEDs are the replacement for LCDs.
Advantages of LED display over LCD display
- Less power consumption: LED uses less electricity than the LCD.
- Lightweight and thinner: LED display is lightweight and slimmer than LCD.
- Brighter image: The visuals of LED screen is brighter than LCD.
- Flicker free: There is no flicker issue in LED like the LCD.
- Longer lifespan: The lifespan of the LED display is longer than LCD.
- Less heat output: The LED won’t produce heat as much as LCD.
The OLED is developed by LG. The OLED stands for the Organic Light Emitting Diode. Backlighting: There isn’t any backlighting layer such as LCD or LED on the OLED display. Instead, each pixel is capable of illuminating on its own.
Advantages of OLED display over LED display
- Better visuals than QLED.
- No backlight is needed. This is completely different technology from LCD.
- Exact color representation even in the widest viewing angles.
- No glare even at the widest viewing angles.
- The OLED display is thinner than an LED display.
- OLED consumes less power than the LED since there is not a separate backlight panel. Remember: A LCD/LED display with lower backlight brightness can consume less power than OLED display.
- OLED can produce an excellent black level and is capable of turning off the individual pixels. It can produce darkest blacks and brightest whites.
- The refresh rate of OLED TV is higher than a typical LED/LCD TV. Thus the visuals are much smoother. This is preferred for games and sports lovers.
Disadvantages of OLED
- The brightness of OLED display might begin to fade after 3 years of usage since it uses organic components.
Types of OLED
- POLED – Also known as ‘Plastic Organic Light Emitting Diode’ or Plastic OLED is an OLED display that supports display sizes only up to 3-inch. The pixels are in POLED are the passive matrix. This display is good for a fitness tracker but for other displays which supports videos needs to be an active matrix.
- AMOLED – This is the OLED display mostly used in smartphones and television screens. The pixels in AMOLED are active matrix.
The AMOLED stands for Active Matrix Organic Light Emitting Diodes. This is primarily used in the smartphones. This is similar to the OLED display. But the AMOLED has a thin-film transistor (TFTs) on its back panel. The TFT helps to turn off or on each individual pixels. This erases the size limitation of the display screen. Just like the OLED display, screen burn-in can happen on the AMOLED display if the screen is left with the same picture for few hours.
- Super AMOLED – Instead of using a separate layer for the touch screen. The Super AMOLED has a layer that detects touch is integrated into the screen, rather than held on the front of the screen.
- Super AMOLED Advanced
- Super AMOLED Plus
- HD Super AMOLED
- HD Super AMOLED Plus
- Full HD Super AMOLED
- Quad HD Super AMOLED
QLED is the term coined by Samsung to their display technology to counter the LG’s OLED TVs. The expansion of QLED is “quantum dot LED TV”. The QLED TV has Quantum dots molecules. When hit by light, the molecules emits their own different coloured light. Unlike, OLED which doesn’t require a backlight, the QLED requires a backlight.
Advantages of QLED display
- QLED consumes half the power required for the OLED display but yet
30 to 40% more brighter.
- Screen burn-in is not a problem in QLED displays. But it might occur on the OLED display.
- QLED TV costs lower than OLED TV.
- QLED TVs can lost longer than the normal LED/LCD TVs.
- Speed of switching between ON/OFF is very fast.
The XLED is developed by Vizio. It is a full
The term TN stands for ‘Twisted Nematic’. It consists of the nematic liquid crystal held between two layers of polarized glass.
Advantages of TN Panel
- TN panel has faster response time than the IPS panel. Better for shooting games.
- TN panel is cheaper than the other main display panels types, such as the VA (vertical alignment) and IPS (in-plane switching).
The term IPS stands for ‘In-plane switching’. IPS has produces better colors and viewing angle than the TN panel. So, a person can view the display even sitting at the cornor for a room.
Advantages of IPS display
- Produces better colors than a typical TN display. Better for graphics design.
- Better viewing angle and no glare.
The term VA stands for ‘vertical alignment’. This display’s pros and cons are in between the TN and IPS display. The response time, color, viewing angle and price are all in between the TN and IPS display.
The plasma display uses ionized gases to light up the screen while the OLED display uses an organic material. Since OLED uses organic material, the color of the screen will fade out over time but this is not a case with plasma display. But the plasma display can’t be used at the higher attitude simce it uses the gas inside. The atmosphic pressure and the pressure of the gas inside the display shouldn’t vary. Otherwise, it will damage the display.
Higher resolution, higher refresh rate, and larger screen size are all common in both OLED and plasma display. The plasma display can produce better black level but it can’t produce 100% blackness level like an OLED display. The plasma display is one of the costliest to make and thus it is not made widely.