How to improve LCD screen response time
With the recent widespread use of PCs and online games, and PCs equipped with DVD drives provide users with more opportunities to view moving images such as 3D games or action movies on the screen. This increase in moving image content means that computer monitors must be able to display not only still images, but also moving images. The customer has a request for faster and faster response time for the LCD screen. Unfortunately, the slow response time is one of the drawbacks of the LCD screen. With the progress of technology, LCD can meet most response time requirements .
Slower vs. Faster Response Time
If the response time is slow, transitioning from one image (or frame) to another may cause afterimage or blurring. This problem occurs not only when watching moving images, but also while scrolling. For this reason, panels with faster response times are typically recommended for displaying moving images.
Listed below are calculations for liquid crystal response times that displays meet, with consistent reliability, for various application standards. Response time is measured in milliseconds (ms, 1/100 of a second). The shorter the time frame, the better the display quality.
Liquid crystals rarely turn on or off completely. Instead, they cycle between gray states. The following are two common methods used by the display industry to measure response time:
Currently, there is no accepted standard for calculating gray-to-gray response time. The above definition is for reference only.
How to improve LCD screen response time?
There are several ways to improve the LCD Response Time .
Optimize LCD material and structure
The key parameters of faster response time are listed below and the improvement can be made by first optimizing the following parameters.
Liquid crystal materials: the lower the viscosity, the faster the response and the higher the voltage.
Temperature: The higher the temperature, the faster the response (but some LCD screens need to be used at lower temperatures). The lower the temperature, the higher the viscosity of the liquid crystal material.
Production process: to make the cell gap thinner. This is the most effective measure. The thinner the cell spacing, the faster the response (but lower performance and higher cost).
Conduction: The smaller the multiplex, the faster the response. (But driving more expensive)
Use the LCD heater to heat the liquid crystal material.
Technologies: TN is faster than STN (but the contrast will be lower).
Normal TN response time
25ms at +70°C
35ms at +25°C
100ms at 0°C
250ms at -20°C
800ms at -30°C
5000ms at -40°C
STN Normal Response Time
200ms at +70°C
250ms at +25°C
450ms at 0°C
1000ms at -20°C
8000ms at -30°C
~60,000ms at -40°C
