OLED vs AMOLED vs QLED: Difference and Comparison

Key Takeaways

  1. OLED and AMOLED have superior contrast ratios and viewing angles compared to QLED.
  2. QLED displays are substantially brighter than OLED/AMOLED and resist image burn-in.
  3. All three produce vibrant, high quality 4K images, with OLED having the best black levels.

What is OLED?

OLED stands for Organic Light-Emitting Diode. It is a type of display technology that is used in various electronic devices such as smartphones, televisions, and computer monitors. One of the key advantages of OLED displays is their ability to produce deep black levels and high contrast ratios.

Unlike traditional LED (Light-Emitting Diode) displays requiring a backlight, OLED displays emit light directly from each pixel. Each pixel in an OLED display consists of organic compounds that emit light when an electric current is applied. This eliminates the need for a separate backlight, resulting in several advantages.

What is AMOLED?

AMOLED stands for Active-Matrix Organic Light-Emitting Diode. It is a specific type of OLED display technology that is commonly used in smartphones, tablets, and wearable devices. One of the key advantages of AMOLED displays is their ability to achieve high contrast ratios and deep black levels, similar to traditional OLED displays. 

AMOLED displays are based on the same underlying principles as OLED displays, but they incorporate an active matrix, which helps control the individual pixels more precisely. Each pixel in an AMOLED display has a thin-film transistor (TFT) integrated with it, allowing for independent control of each pixel’s brightness and color.

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What is QLED?

QLED stands for Quantum-dot Light-Emitting Diode. It is a display technology that is used in certain types of televisions and monitors. QLED displays utilize quantum dots, tiny semiconductor particles emitting light when stimulated by an external light source or electrical current. These quantum dots are incorporated into the display’s backlighting system.

In a QLED display, a blue LEDs (Light-Emitting Diodes) background light illuminates the quantum dots. The quantum dots then emit light of different colors based on their size, allowing for a wide color gamut and enhanced color accuracy.

Difference Between OLED, AMOLED, and QLED

  1. OLED (Organic Light-Emitting Diode) and AMOLED (Active-Matrix Organic Light-Emitting Diode) are based on the same fundamental OLED technology. QLED (Quantum-dot Light-Emitting Diode) is a different technology that uses quantum dots in its backlighting system.
  2. OLED displays have organic compounds that emit light directly from each individual pixel. AMOLED displays have an active matrix with thin-film transistors (TFT) integrated into each pixel for better control. QLED displays use quantum dots in the backlight to enhance color reproduction.
  3. OLED and AMOLED displays can achieve deep black levels and high contrast ratios by turning off individual pixels. This results in excellent contrast and vibrant colors. QLED displays can produce bright and vibrant colors, but they may not achieve the same deep black levels as OLED and AMOLED displays due to their reliance on LED backlighting.
  4. OLED, AMOLED, and QLED displays can offer accurate and vibrant colors. However, QLED displays, with the use of quantum dots, are specifically designed to achieve a wider color gamut and enhanced color accuracy.
  5. OLED and AMOLED displays are more prone to burn-in or image retention issues, where static images displayed for prolonged periods may leave a faint residue. QLED displays do not suffer from burn-in issues since they rely on LED backlighting. However, newer OLED and AMOLED displays have implemented technologies and measures to mitigate this problem.
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Comparison Between OLED, AMOLED, and QLED

Parameters of ComparisonOLEDAMOLEDQLED
Power EfficiencyHighHighModerate
View AngleswidewideWide
Response TimeVery fastFastFast
Screen Size AvailabilityLimitedWide range of sizesWide range of sizes
  1. https://www.sciencedirect.com/science/article/pii/S136970211830302X
  2. https://sid.onlinelibrary.wiley.com/doi/abs/10.1002/jsid.393

Last Updated : 25 August, 2023

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