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Perhaps you’re in the process of picking out a desktop or notebook PC, or already have a laptop computer but aren’t exactly satisfied with the amount of screen real-estate it provides—either way, it’s time to get the 411 on the expansive world of computer monitors so you can find out what product(s) will fit your exact needs.

Fairly new to the consumer market, the curved-screen craze that started around 2014 with Samsung and LG TVs has made its way to computer monitors. Just like ultrawide monitors, curved monitor displays have extended left-and-right width that curves in towards the viewer. Since its inception, the main purpose of this feature has been to provide more immersion. Ultimately, these monitors can present a higher sense of depth that traditional flat-panel displays cannot.

It’s 2019 and the majority of screens you see out in the wild come with touch functionality – but these functions remain relatively rare in the monitor world. Generally, all monitors come with integrated, physical-hardware controls to adjust screen and picture settings. Some touchscreen monitors step it up by providing you with an on-screen, touchable overlay. Most importantly, touchscreen monitors are commonly used for compatible educational and commercial applications. Whether it’s an interactive learning app to help 4th grade students or a POS (point-of-sale) device at a sports stadium’s concession stand, touchscreen monitors may require specific hardware and software to properly work.

The differences between LCD and LED technology are huge factors in determining what works for your end-goal and budget, and they’re the most common acronyms you’ll come across on computer monitor product pages.

Liquid-crystal display (LCD) technology was first on the scene for TVs but didn’t come to computer monitors until the mid-90s. The name comes from the fact that these displays have screens that consist of two pieces of glass that house liquid in between them. From there, the screen is divided into thousands upon thousands (sometimes millions) of rows and columns, better known as pixels (a term coined in the 1960s to abbreviate “picture element”).

Now, the hardware parts that push out the picture you see on your LCD-monitor screen are known as cold cathode fluorescent lamps (CCFLs). These lamps give your LCD monitor a lifespan of about 30,000 hours. Because the technology is older, these products are usually thicker and heavier. Few of them support resolutions above Full HD (1920×1080, width by height), and the color-contrast range may also be limited at times. If you’re concerned about your environmental footprint, the mercury pollution that these monitors may emit is something you will need to properly address at the end of the product’s lifecycle.

On the plus side, LCD displays come at a lower price point and do not suffer from burn-in, a negative effect that occurs if you leave your screen on and the last image displayed remains lightly on the screen—even when it’s turned off.

Technically, LED displays are also LCD monitors since they have the same liquid between their two-piece glass screens. The difference lies within the hardware that’s used to shoot out the image. Light-emitting diodes (LEDs) are used in place of a LCD display’s fluorescent lamps. Because of this, LED monitors are brighter and consume less power than LCD screens, ultimately boasting a lifespan of about 50,000 hours.

The technology for light-emitting diodes first came about in the early 1960s and were initially only able to produce red color. Of course the color capability of these diodes has evolved, but the efficiency and high level of performance has been consistent. On paper, LED monitors come at a higher price point because of their impressive color contrast and picture quality. If you’re looking for a screen to game on, you’ll have to go LED for the noticeably faster response time compared to LCD displays.

Now that we’ve got an understanding of liquid-crystal displays and the two types of backlighting tech behind them, it’s time to get into the different panel types that LCD monitor screens have and how they relate to your computing needs. Just because certain panel types cost more than others does not mean that more expensive is generally better. It all comes down to which panel type’s features can best serve the tasks of general use, gaming, or professional video/image-editing applications, which will in term depend on color-reproduction technology, viewing angles, response times, and refresh rates.

If you’re a hardcore PC gamer, then twisted-nematic (TN) panels may be your first screen of choice. TN-panel computer monitors boast the highest refresh rates and fastest response times. Being one of the oldest display technologies, TN panels produce picture by utilizing translucent nematic liquid crystals within glass plates, a color filter and two lined filters (one vertical, the other horizontal). Due to the polarizing effect that occurs within TN panels, these types of monitors have the poorest color presentation and viewing angles. On the other hand, these displays are the most-affordable monitors, making them perfect for gamers who have already shelled out a lot of cash for their gaming battlestation.

Again, TN panels should be your panel of choice if you’re looking to get the highest performance from your gaming PC. As of writing, TN panels are the only types of monitors that can support a refresh rate of 240Hz, which means if your system and graphics card can generate and push out 240fps, the monitor in turn will match and refresh 240 frames per second, creating the fastest and smoothest visual gaming experience on the market.

Compared to TN panels, in-plane switching (IPS) panels house and emit the best viewing angles and most accurate colors. IPS panels were specifically designed to make up for the limitations of traditional TN panels. Perfect for graphic-design artists or cinematographers, IPS computer monitors have their inner crystal liquids adjust their alignment on a single plane (hence the name) to show accurate, true-to-life colors from any viewing angle.

Unfortunately nothing is truly perfect, as most entry-level IPS monitors do not have the same quick response times and refresh rates that TN-panel PC monitors have. Also, because of their high image-color quality and superior viewing experience, IPS monitors generally come at a higher price point than TN panels. Nevertheless, with the right adaptive-syncing technology (see G-SYNC and AMD FreeSync below) and computer specs, an IPS monitor could potentially be the best solution for great-looking, high-performance gaming.

Coming about in the 90s, vertical-alignment (VA) panels have their liquid crystal cells rest in a vertical position when the display is not in use—once voltage is applied to the display, the crystals shift to a horizontal orientation to let light, and ultimately your picture, through. Similar to IPS panels, VA computer monitors were made to provide an alternative option to the forerunner TN-panel monitors.

With decent refresh rates (not quite TN-level in most instances), VA monitors have better color contrast and image depth with their more versatile pixels. Having a higher bit depth means more colors can be used on each pixel. Though VA monitors have better viewing angles than TN panels (generally not as much as IPS), their slow response times make them better as a general-use device for home streaming or office-work applications.

Now’s a great time to introduce monitor screen aspect ratios and how they relate to screen resolutions. By definition, aspect ratio is a display screen’s width in relation to the screen’s height. For example, some of the first television sets sold were near-square screens with a slightly larger width than height, making a 4:3 aspect ratio. Now, computer-screen resolutions (though absolutely similar to aspect ratio) are measured and portrayed in width by height pixels.

In 1987, the world was first introduced to monitors that housed 4:3 screens with a 640×480 resolution. As of writing, most computer monitors use widescreen ratios and Full HD resolutions, with the most popular being 16:9 at 1920×1080 pixels. By doubling up the width + height dimensions within an aspect ratio, you can get sharper resolutions (clearer visuals) due to more pixels being packed into the same aspect ratio. Of course, these aspect ratios and resolutions have also evolved due to more variations, such as curved displays and UltraWide monitors.

If you’re looking to game and get the best performance (graphics card output of frames per second & a monitor’s refresh rate) it needs to be noted that higher resolutions will require more graphics-processing power. Though 4K gaming is not impossible you’ll most likely need a system that runs and implements the power of two graphics cards to one display. If you’re on a budget or want the smoothest gaming experience, it’s best to stick to a resolution of 1920×1080 (maybe 2560×1440, depending on the capabilities of your PC’s components).

The standard for connecting devices to high-definition TVs, High-Definition Multimedia Interface (HDMI) cables also work well in connecting your computer to your monitor. As of writing, the latest standard of HDMI 2.0 will give you a maximum 4K picture at a 60Hz refresh rate with the right components and display. Of course, HDMI is also able to carry over the audio signal from your computer to monitors with built-in speakers.

Digital Visual Interface (DVI) connectors are starting to become legacy tech, but on paper have the same video-output capabilities as the first-generation of HDMI. You’ll need a separate audio cable (or HDMI adapter to the end that goes to your monitor) to get audio from your PC, but DVI can support up to 1920×1080 resolutions at a max refresh rate of 144Hz with the right components and display monitor.

Aspect ratio is the relationship of the width of a video image compared to its height. The two most common aspect ratios are4:3, also known as 1.33:1 or fullscreen, and 16:9, also known as 1.78:1 or widescreen. (Larger aspect ratio formats are used in the motion picture industry.)

All the older TV’s and computer monitors you grew up with had the squarish 4:3 shape– 33% wider than it was high. These are often referred to as square monitors.  4:3 LCD monitors can display analog video signals that conform to NTSC and PAL standards. They are not capable of displaying HD (high-definition) video.

The 4:3 aspect ratio dates back to 1917, when the Society of Motion Picture Engineers adopted it as the standard format for film. In the 1930’s, the television industry adopted the same 4:3 standard. But in the mid-1950’s, the motion picture industry began developing several widescreen formats to improve their decreasing audience numbers. Television broadcasting stayed with the 4:3 standard, until the recent move to HDTV and 16:9 widescreen.

16:9 is the native aspect ratio of most high-definition widescreen LCD monitors and TV’s (16:9 and 16:10 are very similar). It is 78% wider than it is tall, and fully one-third wider than a 4:3 screen. 16:9 widescreen monitors are ideally suited to display HD video signals. Some models can also display SD (standard definition) video signals, but this will require some compromises, as you will read below.

Nearly all experts agree that in order to display optimal video images, it is critical to match the aspect ratio of the monitor to the aspect ratio of the camera (or other incoming video source). Below is a example of a 16:9 image on a 16:9 widescreen lcd monitor:

However, many cameras in the industrial, commercial, security, and law enforcement industries still utilize 4:3 CCD or CMOS imagers. Therefore, to display clear, undistorted video images, it is important to utilize monitors with the same 4:3 aspect ratio to match the cameras. Failure to do so will result in distorted images, as shown below.

Unfortunately, despite the continued widespread use of 4:3 cameras, LCD monitors with a 4:3 aspect ratio are getting harder and harder to find. Many manufacturers have abandoned them in favor of the newer 16:9 widescreens. TRU-Vu Monitors still offers a complete line of industrial-grade 4:3 aspect ratio LCD monitors. These range in size from 5.5″ to 19″ screens. They are available with standard, waterproof, steel or open frame enclosures. They can be touch screen,  sunlight readable, medical-grade, or optically bonded.

16:9 widescreen LCD monitors are the ideal complement to 16:9 format HD cameras. These are increasingly used in video conferencing, broadcast and medical applications. They display superb, distortion-free, high-definition images. TRU-Vu Monitors offers these in 7″, 10.1″, 13.3″, 15.6″, 17.3″, 18.5″ and 21.5″ to 65” LCD screen sizes, in standard, touch screen, sunlight readable, medical-grade, optically bonded and open frame configurations.

You must avoid video images which are stretched, chopped, squeezed, shrunk or distorted. Be sure to choose a LCD monitor with the correct aspect ratio (4:3 aspect ratio or 16:9 aspect ratio) that matches your camera or other incoming video signal.