Response Time Measurement

The response time is the amount of time it takes for pixels to change from one color to the next. Plain speaking, that is how quickly the display can have an LCD pixel to change from active to inactive, or from inactive to active. A lower response time typically means less ghosting of the image and better picture quality.

Evaluating Ways

Generally, there are three ways to evaluate the response time:

• Black to White (BtW)

BtW response time is roughly the time it takes the pixel from "off" to "on". This method produces high numbers or slow times because the little tiny crystals in the LCD screen basically goes from the "off position" (black), to the "on position" (white).

• Gray-to-gray (GtG)

GtG response time is how long it takes a pixel to change from one grey value to another grey value. The basic layer controls greyscale and is closest to the display’s processing core and power delivery. GtG is the standard in marketing now, as its faster response and the numbers are much more tempting.

• Motion Picture Response Time (MPRT)

MPRT stands for moving picture response time or motion picture response time. The test measures how long a pixel remains apparent or visible on the screen. The longer a pixel stays visible, the more blur or trail a moving image creates.

Service Scopes

Our response time instrument has the characteristics of objective, accurate, simple and easy to operate, and is suitable for the measurement of any gray scale of LCD. We can operate the test items below:

Our Advantages

Alfa Chemistry will be in touch with you throughout the liquid crystal and LCD analysis process to make sure your project objectives are accomplished. You will be able to decide whether your needs have been fulfilled and whether additional testing is required to meet your needs throughout the project. The final outcome will be a high-quality analysis. Please contact us or get a quote to discuss your testing needs for a complete list of our testing services.