Core Differences Between OLED and LCD
Display Technology & Illumination
OLEDs are self-emissive, meaning they generate their own light. LCDs rely on backlights, typically LEDs. That difference makes OLEDs more flexible in design and capable of better black levels.

Contrast & Color Accuracy
OLEDs win big here. Because they can turn off individual pixels, the blacks are truly black. The contrast ratio is nearly infinite. LCDs, on the other hand, always have some light leakage, making blacks more of a dark gray.

Color accuracy is often better on OLED, which can matter if you need to monitor fine visual details say, on a machine control screen or diagnostic interface.

Power Consumption
Surprisingly, OLED can use less power but only if the screen is mostly black. Bright, all-white screens can use more energy than LCDs. LCDs have consistent energy usage since the backlight is always on.

Response Time
OLEDs react instantly. Perfect for fast-moving visuals or interactive interfaces. LCDs can have a slight lag, which may not matter much unless you're using touch or need rapid display updates.

Viewing Angles
OLEDs crush it here, offering nearly perfect viewing from any angle. LCDs suffer from color and contrast shifts when viewed off-center which could be a problem if multiple operators are viewing the same panel.