"TruMotion 200Hz" is a marketing term used by some TV manufacturers, often LG, to describe a technology that aims to improve the perceived smoothness of motion in video content. It's not a real refresh rate, but rather a combination of technologies designed to achieve a similar effect.

Here's what it usually involves:

* Motion Interpolation: This technique adds extra frames between existing frames, creating the illusion of smoother motion. It's similar to what you see in movies when they use "frame blending" or "frame interpolation".

* High Refresh Rate Panel: While not directly 200Hz, the panel may have a native refresh rate of 100Hz or 120Hz, which is higher than standard 60Hz panels. This allows for more frames to be displayed per second, contributing to smoother motion.

* Backlight Scanning/Local Dimming: These technologies help to reduce motion blur by quickly adjusting the brightness of the backlight behind the panel. This is more common on higher-end TVs.

Here's the catch:

* Not Actual 200Hz: "TruMotion 200Hz" is not a true 200Hz refresh rate. The actual refresh rate of the panel might be lower.

* Subjective Effect: The effectiveness of TruMotion 200Hz can be subjective. Some people find it improves motion smoothness, while others find it creates a "soap opera effect" that makes the video look unnatural.

* Potential for Artifacts: In some cases, motion interpolation can introduce artifacts like flickering, blurring, or judder.

In summary:

TruMotion 200Hz is a marketing term for a set of technologies designed to enhance motion smoothness. While it can be effective, it's not a true 200Hz refresh rate and its effectiveness can vary depending on the individual and the content being viewed.