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A Comparison of LCD, LED, and OLED Displays
A plain-language side-by-side of LCD, LED-backlit LCD and OLED screens: how each is built, how black levels and viewing angles differ, and the trade-offs.
Foundations
Display Basics
How LCD, LED and OLED screens work, how they compare and where they are heading.
A Guide to Choosing the Right Display Technology for Your Needs
A criteria-based guide to matching a screen technology to your use: room lighting, viewing distance, content, budget and lifespan, with no product picks.
How Liquid Crystals Control Light
A plain-language explanation of how polarizers and twisting liquid crystal molecules turn electrical signals into light and dark on an LCD screen.
How Pixels and Subpixels Form an Image
How red, green and blue subpixels combine into full-color pixels, and why the arrangement of those subpixels affects sharpness, especially for fine text.
The Evolution of Display Technology: A Look Back at the Past 20 Years
A broad look at how screens moved from deep, heavy tubes to thin flat panels, then to sharper, brighter, faster and more portable displays, without exact dates.
The Future of Display Technology: What to Expect in the Next 5 Years
A cautious overview of directions that display researchers and makers are exploring, presented as uncertain possibilities rather than forecasts or promises.
Understanding the Science Behind OLED Displays
A plain-language explanation of how thin organic layers emit light when current passes through them, and why each OLED pixel can switch off completely.
What Backlights Do in LCD Screens
Why liquid crystal panels need a separate light source, and how edge-lit and direct-lit backlight designs differ in thickness, uniformity and contrast.
Related topics
More in foundations
Testing and Calibration Understanding brightness, contrast, color and motion tests and why calibration matters. Panel Technologies The panel types and light sources behind modern and older screens. Specs Explained What the numbers and terms on a display spec sheet actually mean. Connections and Setup Cables, signals and settings that decide how a display behaves. Care and Common Problems Why screens develop faults and what general care involves.