What is OLED Display & How it Works? OLED vs. LCD

OLED Display:

OLED stands for Organic Light-Emitting Diode. It is a type of display technology that uses organic compounds that emit light when an electric current is applied. OLED displays are known for their high contrast ratios, vibrant colors, and power efficiency.

Parts of OLED

How OLED Works:

  1. Organic Layers: OLED displays are made of organic layers that emit light when an electric current passes through them.

  2. Emitter: When a voltage is applied, the positively charged holes and negatively charged electrons combine in the emissive layer, generating light.

  3. Color Generation: Different organic materials emit different colors when stimulated by electrical currents, allowing for vibrant and accurate color representation.

  4. Pixel Control: Each pixel in an OLED display is individually controlled, allowing for true black levels and high contrast ratios by turning off pixels completely to achieve perfect blacks.

OLED Display Working Principle

OLED vs. LCD:

  1. Black Levels: OLED displays can achieve true black by turning off individual pixels, while LCD displays use a backlight that can cause light bleed, resulting in less deep blacks.

  2. Contrast Ratio: OLED displays offer higher contrast ratios compared to LCDs due to the ability to completely turn off pixels.

  3. Color Reproduction: OLED displays typically offer more vibrant and accurate colors compared to LCDs, as they emit light directly rather than relying on a backlight.

  4. Viewing Angles: OLED displays have better viewing angles and can maintain color accuracy from wider viewing angles compared to LCDs.

  5. Response Time: OLED displays generally have faster response times compared to LCDs, resulting in smoother motion and reduced motion blur.

  6. Energy Efficiency: OLED displays are more energy-efficient than LCDs because they do not require a separate backlight. Power is only consumed by the pixels that are active.

In summary, OLED displays use organic compounds to emit light, offering advantages such as true black levels, high contrast ratios, vibrant colors, and energy efficiency compared to LCD displays.

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