✅ Working Principle

LCD screens do not emit light on their own and rely on controlling liquid crystal molecules to achieve display effects. In contrast, both LED and OLED screens achieve light emission through diodes.

✅ Viewing Angle:

LCD screens have directional light, resulting in a narrower viewing angle. LED and OLED screens, composed of light-emitting diodes, offer a wider viewing angle than LCDs.

✅ Material Composition :

LCD screens combine solid (glass) and liquid (crystal) materials. LED displays typically use inorganic materials, while OLED displays use organic materials.

✅ Thickness Difference :

LCD screens are the thickest due to their two layers of glass and liquid crystal layer; LED screens are moderately thick, while OLED screens are the simplest in structure, the thinnest, and have good flexibility.

✅ Color Gamut:

OLED screens can display a very wide range of colors and are not affected by backlights, making them superior for displaying pure black. The color gamut of LCD screens ranges from about 72% to 92%, while that of LED screens typically exceeds 118%.

✅ Power Consumption :

LCD screens rely on backlighting, and better display effects result in higher power consumption. The power consumption of LED screens depends on the level of technology and craftsmanship—the more advanced the technology, the more energy-efficient. OLED screens are self-luminous, with no power consumption when not displaying, making them the most energy-efficient.

✅ Price Comparison :

LED screens of the same size are usually more than twice as expensive as LCD screens, while OLED screens are even more costly.

✅ Technology Maturity :

As a traditional display technology, LCD screens are more mature than OLED and LED screens. However, OLED screens surpass LCDs in terms of response time, especially for displaying fast-moving images.