What is Monitor Contrast Ratio?

What is Monitor Contrast Ratio? The monitor is the basic output device which is used in the computer system to display the results or output of processed data. From the start of the computer system, the Monitor display is used as an output device over time, as other computer technologies are changed, technologies of monitor display are also got changed and updated.

At the start, CRT (Cathode Ray Tube) monitors were user which were very big and also consume higher voltage. On the other hand, picture quality on these monitors was poor. Large space was another issue to keep these monitors. These CRTs remained in use for a very long time. After these, new and high-resolution display monitors are manufactured which were termed as LCD (Liquid Crystal Display).

The display of these monitors is very bright and many times better than CRT’s. After LCD monitors, the new and latest technology of monitors comes in the market which is LED (Light Emitting Diodes). The display of these LED’s is very bright, sharp, and HD quality.

Nowadays, a variety of LED monitors is available in the market in all sizes. LCD and LED monitors are many times efficient in power consumption than CRT monitors and these are very slim and lightweight monitors which can be placed easily in few inch areas.

What is Monitor Contrast Ratio

What is Monitor Contrast Ratio?

Contrast Ratio, which is also referred to as CR, is the ratio of the intensity of light between the brightest white and the darkest black produced by a monitor. This intensity of light which is emitted from a surface per unit area in a given direction is called luminance. The unit of luminance is called ‘nit’. To measure the contrast ratio, there is no standardizing way or any organization which sets any level of contrast ratio.

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Normally to measure the contrast ratio, the luminance of white and black is measured and the ratio between these two is calculated. Simply, the contrast ratio is the difference between the darkest blacks and the brightest white produced by a display.

What is the Importance of contrast ratio?

An in-display device, the contrast ratio is a very important feature because it is used to determine the quality of the display. CR is also the direct reflection of the pictures. Mostly when we go for buying a monitor to the market or store, nobody tells us about this feature of monitors but we must aware of this feature as an intelligent buyer.

A normal buyer of monitor focused on other features of the monitor like size, body shape, and screen resolution but never thinks about the contrast ratio of that monitor which he or she is decided to buy. No dought, the contrast ratio is related to the picture production. In very simple words, for picture quality, the contrast ratio is the most important aspect. Generally picture quality will be good if whites are pure white and blacks are pure black.

Before selecting a monitor, the purpose of the use of this monitor is important. Either this monitor will be used for graphics designing, for playing games of high or low resolution or just for watching movies which can be of low resolution, HD, or Ultra HD. Mostly color monitors use RGB color gamut for making different color combinations because the majority of different colors are formed with a different combination of RGB (RED GREEN BLUE) colors.

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In the same way, R=G=B 100% is white color while R=G=B 0% is black color. This all clearly shows the importance of contrast ratio of a monitor for brighter, sharp, and accurate pictures in high quality.

Different display panel technologies:

Display monitors are built by using different technologies that’s why all of these are different in picture quality. The contrast ratio of all these technologies is also different from one another. Contrast ratio is even can be different between two units of the same technology monitor. The most common display monitor technologies are as under.

Vertical Alignment (VA) Display Panels:

Vertical Alignment also termed as VA is a type of LED display panels that have best contrast and image quality. The contrast ratio of VA panels is greater than 2500.

IPS Display Panels:

IPS stands for In-Plane Switching and these display panels are perfect in all viewing angles. The contrast ratio of these IPS display panels is less than VA panels but is not bad in quality. The typical contrast ratio of IPS panels is 700 to 1500.

Twisted Nematic (TN) Panels:

These TN panels are a type of LCD. These display panels are fast but less expensive. The contrast ratio of these monitors is not good which is between 600 to 1200.

OLED Panels:

Organic LED panels are these monitors that are without a backlit. These monitors are thin and lightweight display panels. The contrast ratio of these monitors is ideal and also has deep black levels.

Contrast Ratio measurement techniques:

Although no perfect and authentic measurement techniques are available for measuring the contrast ratio of a display monitor. But the following are a few methods that are used to measure the contrast ratio of monitor.

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Full-on/Full-off: In this method, contrast is measured by using a full white screen and a full black screen. The accuracy of this method is lower.

Half Screen slides: It is also similar to the Full on/Full off method but in this, a slide which is half white and half is black is used instead of a full screen. The accuracy of this method is a little better than the full method.

Small Samples: In this method multiple small white and black slides are used to measure the contrast.

Checkerboard: This method is mostly acceptable for measuring the contrast ratio of the display monitor. This checkerboard is called the ANSI checkerboard. ANSI checkerboard methods measure the contrast ratio output in 16 squares.

Final Words

I this article, I tried my best to guide you about the contrast ratio of monitors which is very necessary to get good monitors according to your needs of playing games, graphics designing work, and video editing, and many others like this. So that when you need to buy a new display panel you can choose the best wisely.

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