What is the grayscale response time of the display for

Grayscale. Refers to the brightness level, taking an 8-bit panel as an example, it can show 256 brightness levels (2 to the 8th power), which we call 256 gray scales. The response time is usually measured in milliseconds milliseconds and refers to liquid crystal displays.

The speed at which the liquid crystal particles react to the input signal, i.e., the time it takes for liquid crystal particles to change from dark to light or from light to dark, is usually the sum of the two.

Due to the rotation of liquid crystal molecules, each point on the LCD screen transitions from the previous color to the next color, which will have a time process, which is what we usually call response time. Since the conversion speed of liquid crystal molecules "from black to white" and "from white to black" is not completely consistent, in order to be able to mark the reaction speed of the liquid crystal panel as meaningfully as possible, the traditional definition of response time is basically based on the "black-white-black" whole process response time as the standard.

When we play games or watch movies, the content of the screen cannot just switch between the blackest and whitest, but colorful pictures, or different shades of different levels of change, these are the ridges between the gray scales or this conversion. In fact, the conversion speed and torsion angle of liquid crystal molecules are determined by the magnitude of the applied voltage. From all-black to all-white, liquid crystal molecules face the largest torsion angle, and need to apply a larger voltage, and the liquid crystal molecules have a faster torsion speed.

But it involves different shades of gray.

Switching, it is difficult to implement, and all the images you see on the monitor on a daily basis are the result of grayscale changes.

The FS-GRT is an optical instrument used to measure grayscale response time.

Suzhou Fushida Scientific Instrument Co., Ltd. is in chaos.

The principle of Overdrive liquid crystal drive acceleration technology is based on increasing the driving voltage of the liquid crystal unit box, so will it shorten the life of the liquid crystal display? The answer, of course, is no. Because the maximum flip voltage of the liquid crystal itself is in the "black-white-black" stage, and the flipping voltage of all gray-scale parts is less than the "black-white-black" part, the premise of overdrive technology is that only the flipping voltage of the gray-scale part is quietly bridged, and the maximum value of the increase will not exceed the maximum voltage of the "black-white-black" part, and the overdrive of the "black-white-black" part is not adjusted, so the voltage regulation of the overdrive is completely within the safe range. Lifespan will not be affected in any way.

That is to say, the "black-white-black" response time of most gray-scale LCD displays is still 8ms, and the gray-scale (GTG) response time using Overdrive technology is basically below 4ms, which is also in line with our daily letter-slip habits, because more than 90% of the images we want to realistically are based on color (that is, grayscale).

1. Grayscale (black and white) response time is an important parameter to measure the response speed of the LCD screen. Under normal circumstances, the shorter the grayscale (black and white) response time, the smoother the LCD screen display animation, if the response time is longer, it will cause the animation display to freeze and smear. Therefore, the shorter the grayscale (black and white) response time of the LCD screen, the better.

At present, the grayscale (black and white) response time of mainstream LCD screens is about 8 milliseconds.

2. Grayscale response time, that is, GTG (grey to grey). Speaking of grayscale response time, let's first take a look at what grayscale is. Each point on the LCD screen, that is, a pixel, it is composed of red, green, blue (RGB) three sub-pixels, to achieve the change of picture color, it is necessary to make different brightness and shade control of the three RGB sub-pixels, in order to "match" out different colors.

The more levels of brightness and shade in between, the more delicate the picture effect can be presented. In the case of an 8-bit panel, it can exhibit 256 brightness levels (2 to the 8th power), so it is called 256 gray scales.

3. The so-called black and white response time is the speed at which each pixel of the liquid crystal display reacts to the input signal, that is, the time it takes for the pixel to change from dark to bright or from bright to dark (the principle is to apply voltage in the liquid crystal molecule to make the liquid crystal molecule twist and recover). The response time of 25ms and 16ms is often referred to, and the shorter the response time, the less likely the user will have the feeling of tail shadow dragging when watching the moving picture. Generally, the black and white response time is divided into two parts:

Rise time and fall time, and the time is the sum of the two.

The dynamic picture we see is composed of multiple static ** in a row, and the response time is the replacement interval of 2 **, of course, the shorter the better, because the shorter the smoother.

And whether it is grayscale or black and white, theoretically, which of the two responses is higher is the bottleneck of this display.

2ms means that the response time is 2 milliseconds, and the lower the value, the better.

The response time is usually measured in milliseconds, which refers to the reaction speed of the LCD to the input signal, that is, the time when the liquid crystal particles change from dark to bright or from bright to dark, which is the "rise time" and "fall time", and the response time usually refers to the sum of the two. At present, the mainstream LCD response time on the market has reached below 8ms, and the response time of some high-end products is even 5ms, 4ms, 2ms, etc., the smaller the number, the faster the speed.

For the average user, as long as the purchase of 8ms products can basically meet the requirements of daily applications, for gamers, 5ms or faster products are the best choice.

2 nanoseconds is of course the lower the better. This parameter is the time it takes for the display to transition from black to white. The brighter the display, the better the performance.

The smaller it is, the faster the screen switching speed of each color level, but no matter how fast the LCD display is, there will be smearing (related to the principle), so this parameter is only for reference, and the display effect is still good for plasma, and it has nothing to do with it. . .

Represents the minimum time required for display image conversion. The higher the refresh rate, the lower the response time.

The shortest grayscale response is currently 2ms

- To put it bluntly, the shorter the time, the better, and the shorter the more expensive, and now most of them are 1 second or 3 seconds.

If you're not an audiophile gamer, it's good to buy a regular one.

The black and white response time is the speed at which each pixel of the LCD reacts to the input signal, and the time required for the pixel to change from dark to light or from light to dark is the nominal value of the whole process response time of "black-white-black".

The grayscale response time represents the time it takes for the LCD to change from one grayscale to another, that is, the reaction time required for the LCD unit to change from one angle to another, which reflects the real speed of various color changes (i.e., laughing grayscale changes) of LCD. This is mainly due to the fact that in everyday applications, most screen content will not just switch between black and white, but colorful pictures, or different shades of different levels of bending.

Buy a monitor regardless of grayscale response time, or black and white response time. Mainly due to the different calculation methods of each manufacturer, since the parameters given are not "standardized", it is meaningless to compare them together.

Buy a monitor, look at the appearance, look at the interface, look at the **, see if there are bad pixels, and you're good to go.

Q: At present, we often see people mention "grayscale response time", and there are many LCD displays on the market that mark grayscale response time, what is grayscale response time? What are the advantages of gray-level response time?

A: We know that the reciprocal response time reflects the number of frames that can be displayed on the screen over a period of time. For example, an 8ms LCD monitor, theoretically 1ms can display 1 8 frames (frames), 1s can display 125 frames, and the human eye is difficult to distinguish the continuous picture of more than 60 frames, but in fact, such a product will still have a certain degree of drag when the picture is more than 60 frames per second, this is because the whole response time can only reflect the switching speed of the black and white picture, but in daily applications, whether it is watching movies, games or browsing the web, Most screen content will not just switch between black and white, but colorful pictures, or different shades of different levels, which are all transitions between gray scales.

Obviously, increasing the speed of grayscale response time is an important means to alleviate the phenomenon of ghosting.

Due to the technical improvements, the grayscale LCD has a better control of the response time, and the time for switching between most grayscales can be guaranteed to be 6

ms or so, and fairly stable. On the contrary, the ordinary LCD display has a poor grasp of grayscale switching, and it is very unstable, the fastest time can reach less than 5ms, but the slow time is as high as 80ms. According to the manufacturer's technical data, the maximum gray-scale response time of the product with a full response time of 8ms is as much as 20ms.

There is no doubt that the display effect brought by the gray scale is obvious, from the actual test effect of the hidden point of view, the gray scale LCD display shows less dragging, and the moving picture is also more clear and stable, ensuring the clarity and stability of the moving picture.