The Samsung Galaxy Note 20 Ultra features a 6.9-inch Dynamic AMOLED 2X display. Here's a detailed description of its display:

1. Display Size: 6.9 inches (measured diagonally).
2. Type: Dynamic AMOLED 2X, a high-end OLED panel that provides deep blacks, vibrant colors, and excellent contrast ratios, while also being more power-efficient than older AMOLED displays.
3. Resolution: 3088 x 1440 pixels (WQHD+), providing a pixel density of approximately 496 ppi (pixels per inch), which results in incredibly sharp and crisp visuals.
4. Refresh Rate: Supports 120Hz refresh rate at Full HD+ resolution (2400 x 1080), allowing for smoother animations, better responsiveness, and an overall enhanced experience, especially in gaming and scrolling. The display automatically switches to 60Hz when in WQHD+ mode to preserve battery life.
5. Peak Brightness: Can achieve a peak brightness of up to 1500 nits, which ensures good visibility even in bright outdoor conditions.
6. HDR Support: HDR10+ certified, enabling high dynamic range (HDR) content with better contrast, brightness, and color accuracy, making it ideal for viewing high-quality videos.
7. Color Accuracy: Supports a wide color gamut, delivering highly accurate and vivid colors. The Dynamic AMOLED 2X is known for its ability to produce deep blacks and rich colors for a more immersive viewing experience.
8. Screen Protection: Equipped with Corning Gorilla Glass Victus, offering excellent durability against scratches and drops.
9. Always-on Display: The Always-on Display feature shows useful information (like time, notifications, and battery status) even when the screen is turned off.
10. Curved Edges: The Note 20 Ultra features slightly curved edges, enhancing its premium look and feel while also allowing for additional functionality with the edge panel.

This Dynamic AMOLED 2X display is one of the best in the smartphone industry, offering high brightness, vibrant colors, and a smooth 120Hz refresh rate, making the Note 20 Ultra a powerful device for media consumption, gaming, and productivity tasks.