lcd screen size chart quotation

For screen sizes (typically in inches, measured on the diagonal), see Display size. For a list of particular display resolutions, see Graphics display resolution.

This chart shows the most common display resolutions, with the color of each resolution type indicating the display ratio (e.g. red indicates a 4:3 ratio).

One use of the term display resolution applies to fixed-pixel-array displays such as plasma display panels (PDP), liquid-crystal displays (LCD), Digital Light Processing (DLP) projectors, OLED displays, and similar technologies, and is simply the physical number of columns and rows of pixels creating the display (e.g. 1920 × 1080). A consequence of having a fixed-grid display is that, for multi-format video inputs, all displays need a "scaling engine" (a digital video processor that includes a memory array) to match the incoming picture format to the display.

For device displays such as phones, tablets, monitors and televisions, the use of the term display resolution as defined above is a misnomer, though common. The term display resolution is usually used to mean pixel dimensions, the maximum number of pixels in each dimension (e.g. 1920 × 1080), which does not tell anything about the pixel density of the display on which the image is actually formed: resolution properly refers to the pixel density, the number of pixels per unit distance or area, not the total number of pixels. In digital measurement, the display resolution would be given in pixels per inch (PPI). In analog measurement, if the screen is 10 inches high, then the horizontal resolution is measured across a square 10 inches wide.NTSC TVs can typically display about 340 lines of "per picture height" horizontal resolution from over-the-air sources, which is equivalent to about 440 total lines of actual picture information from left edge to right edge.

Some commentators also use display resolution to indicate a range of input formats that the display"s input electronics will accept and often include formats greater than the screen"s native grid size even though they have to be down-scaled to match the screen"s parameters (e.g. accepting a 1920 × 1080 input on a display with a native 1366 × 768 pixel array). In the case of television inputs, many manufacturers will take the input and zoom it out to "overscan" the display by as much as 5% so input resolution is not necessarily display resolution.

The eye"s perception of display resolution can be affected by a number of factors – see image resolution and optical resolution. One factor is the display screen"s rectangular shape, which is expressed as the ratio of the physical picture width to the physical picture height. This is known as the aspect ratio. A screen"s physical aspect ratio and the individual pixels" aspect ratio may not necessarily be the same. An array of 1280 × 720 on a 16:9 display has square pixels, but an array of 1024 × 768 on a 16:9 display has oblong pixels.

An example of pixel shape affecting "resolution" or perceived sharpness: displaying more information in a smaller area using a higher resolution makes the image much clearer or "sharper". However, most recent screen technologies are fixed at a certain resolution; making the resolution lower on these kinds of screens will greatly decrease sharpness, as an interpolation process is used to "fix" the non-native resolution input into the display"s native resolution output.

While some CRT-based displays may use digital video processing that involves image scaling using memory arrays, ultimately "display resolution" in CRT-type displays is affected by different parameters such as spot size and focus, astigmatic effects in the display corners, the color phosphor pitch shadow mask (such as Trinitron) in color displays, and the video bandwidth.

Most television display manufacturers "overscan" the pictures on their displays (CRTs and PDPs, LCDs etc.), so that the effective on-screen picture may be reduced from 720 × 576 (480) to 680 × 550 (450), for example. The size of the invisible area somewhat depends on the display device. Some HD televisions do this as well, to a similar extent.

Many personal computers introduced in the late 1970s and the 1980s were designed to use television receivers as their display devices, making the resolutions dependent on the television standards in use, including PAL and NTSC. Picture sizes were usually limited to ensure the visibility of all the pixels in the major television standards and the broad range of television sets with varying amounts of over scan. The actual drawable picture area was, therefore, somewhat smaller than the whole screen, and was usually surrounded by a static-colored border (see image below). Also, the interlace scanning was usually omitted in order to provide more stability to the picture, effectively halving the vertical resolution in progress. 160 × 200, 320 × 200 and 640 × 200 on NTSC were relatively common resolutions in the era (224, 240 or 256 scanlines were also common). In the IBM PC world, these resolutions came to be used by 16-color EGA video cards.

The availability of inexpensive LCD monitors made the 5∶4 aspect ratio resolution of 1280 × 1024 more popular for desktop usage during the first decade of the 21st century. Many computer users including CAD users, graphic artists and video game players ran their computers at 1600 × 1200 resolution (UXGA) or higher such as 2048 × 1536 QXGA if they had the necessary equipment. Other available resolutions included oversize aspects like 1400 × 1050 SXGA+ and wide aspects like 1280 × 800 WXGA, 1440 × 900 WXGA+, 1680 × 1050 WSXGA+, and 1920 × 1200 WUXGA; monitors built to the 720p and 1080p standard were also not unusual among home media and video game players, due to the perfect screen compatibility with movie and video game releases. A new more-than-HD resolution of 2560 × 1600 WQXGA was released in 30-inch LCD monitors in 2007.

In 2010, 27-inch LCD monitors with the 2560 × 1440 resolution were released by multiple manufacturers, and in 2012, Apple introduced a 2880 × 1800 display on the MacBook Pro. Panels for professional environments, such as medical use and air traffic control, support resolutions up to 4096 × 21602048 × 2048 pixels).

In this image of a Commodore 64 startup screen, the overscan region (the lighter-coloured border) would have been barely visible when shown on a normal television.

When a computer display resolution is set higher than the physical screen resolution (native resolution), some video drivers make the virtual screen scrollable over the physical screen thus realizing a two dimensional virtual desktop with its viewport. Most LCD manufacturers do make note of the panel"s native resolution as working in a non-native resolution on LCDs will result in a poorer image, due to dropping of pixels to make the image fit (when using DVI) or insufficient sampling of the analog signal (when using VGA connector). Few CRT manufacturers will quote the true native resolution, because CRTs are analog in nature and can vary their display from as low as 320 × 200 (emulation of older computers or game consoles) to as high as the internal board will allow, or the image becomes too detailed for the vacuum tube to recreate (i.e., analog blur). Thus, CRTs provide a variability in resolution that fixed resolution LCDs cannot provide.

As far as digital cinematography is concerned, video resolution standards depend first on the frames" aspect ratio in the film stock (which is usually scanned for digital intermediate post-production) and then on the actual points" count. Although there is not a unique set of standardized sizes, it is commonplace within the motion picture industry to refer to "nK" image "quality", where n is a (small, usually even) integer number which translates into a set of actual resolutions, depending on the film format. As a reference consider that, for a 4:3 (around 1.33:1) aspect ratio which a film frame (no matter what is its format) is expected to horizontally fit in, n is the multiplier of 1024 such that the horizontal resolution is exactly 1024•n points.2048 × 1536 pixels, whereas 4K reference resolution is 4096 × 3072 pixels. Nevertheless, 2K may also refer to resolutions like 2048 × 1556 (full-aperture), 2048 × 1152 (HDTV, 16:9 aspect ratio) or 2048 × 872 pixels (Cinemascope, 2.35:1 aspect ratio). It is also worth noting that while a frame resolution may be, for example, 3:2 (720 × 480 NTSC), that is not what you will see on-screen (i.e. 4:3 or 16:9 depending on the intended aspect ratio of the original material).

LCD display doesn’t operate the same way as CRT displays , which fires electrons at a glass screen, a LCD display has individual pixels arranged in a rectangular grid. Each pixel has RGB(Red, Green, Blue) sub-pixel that can be turned on or off. When all of a pixel’s sub-pixels are turned off, it appears black. When all the sub-pixels are turned on 100%, it appears white. By adjusting the individual levels of red, green, and blue light, millions of color combinations are possible

The pixels of the LCD screen were made by circuitry and electrodes of the backplane. Each sub-pixel contains a TFT (Thin Film Transistor) element.  These structures are formed by depositing various materials (metals and silicon) on to the glass substrate that will become one part of the complete display “stack,” and then making them through photolithography. For more information about TFT LCDs, please refer to “

The etched pixels by photolith process are the Native Resolution. Actually, all the flat panel displays, LCD, OLED, Plasma etc.) have native resolution which are different from CRT monitors

Although we can define a LCD display with resolution, a Full HD resolution on screen size of a 15” monitor or a 27” monitor will show different. The screen “fineness” is very important for some application, like medical, or even our cell phone. If the display “fineness” is not enough, the display will look “pixelized” which is unable to show details.

PPI stands for number of pixels per inch. It is kind of pixel density. PPI describes the resolution of a digital image, not a print. PPI is used to resize images in preparation for printing

But you see other lower resolution available, that is because video cards are doing the trick. A video card can display a lower LCD screen resolution than the LCD’s built-in native resolution. The video cards can combine the pixels and turn a higher resolution into lower resolution, or just use part of the full screen. But video cards can’t do the magic to exceed the native resolution.

Aspect Ratio:  You might hear 4:3 which is full screen, 16:9 is for widescreen; 21:9 is for ultrawide computer monitors and televisions, as well as cinematic widescreen projectors. Some ultrawide monitors are trying to replace dual monitor.

Stock sizes provide the fastest and most economical solution to your touch screen needs by avoiding the necessity of customized tooling. Northpoint Technologies offers affordable touch screens with many options in the widest range of standard sizes available. Some of the more popular sizes listed are in stock for immediate shipment.

The Displaytech 204G series is a lineup of 20x4 character LCD modules. These modules have a 98x60 mm outer dimension with 77x25.2 mm viewing area on the display. The 204G 20x4 LCD displays are available in STN or FSTN LCD modes with or without an LED backlight. The backlight color options include yellow green, white, blue, pure green, or amber color. Get a free quote direct from Displaytech for a 20x4 character LCD display from the 204G series.

Currently, there are two main types of TV – LED and OLED. You might be surprised to know that these TV types are available in very different screen sizes.

Therefore, a 26° FOV is the furthest distance from the screen they recommend – but, ideally, the best distance would be a field of view of 36° or closer.

Here is a calculator for working out the recommended viewing distance for a 16:9 screen based on the field of view. Just select your screen size to see the results.

As stated previously, there is no absolute right or wrong here. It will often come down to personal taste, your eyesight or how you use the screen in your room.

One popular rule of thumb is to simply use one foot of viewing distance for every 10 inches of diagonal screen size. This might sound more complicated than it is:

So, for example, if you know the viewing distance in your room will be about 10 feet (or 120-inches), you can work out that a good TV size will be in the range of:

Now, that still gives you quite a bit of choice, but at least you can rule out screens below 48 inches, and you have a better idea of where to start looking.

The simple answer is that the brand of your TV doesn’t matter. Regardless of who makes it, they all have the same essential specifications – screen size and resolution.

If you mainly watch high-definition or 4K Ultra HD images, a larger screen will allow you to appreciate the extra detail – and it will also look great if you sit very close.

If you mostly watch movies, sports and documentaries – anything where you sit down for an extended period and concentrate – then a larger screen is perfect for appreciating the action and detail.

On the other hand, if much of your TV viewing is for shorter programs that require less attention – or your TV is on ‘in the background’ much of the time – a bigger screen may be too overwhelming in the room.

Due to the size of the wall – and because the screen appears more ‘removed’ from the room – it can often make a bigger TV appear smaller and less noticeable.

A large shop floor with many other TVs around can make it difficult to judge the size of a screen. If possible, try and see a similar-sized screen in someone’s home where you will get a better perspective on the size.

Get a feel for a good viewing distance by working it out from your screen size – then consider how you will be using the TV and the type of things you will watch.

After that, you need to consider things like the type of images you will be watching on the TV, how you will be using the screen, and the location in the room you will be installing it.

Two measures describe the size of your display: the aspect ratio and the screen size. Historically, computer displays, like most televisions, have had an aspect ratio of 4:3. This means that the ratio of the width of the display screen to the height is 4 to 3.

For widescreen LCD monitors, the aspect ratio is 16:9 (or sometimes 16:10 or 15:9). Widescreen LCD displays are useful for viewing DVD movies in widescreen format, playing games and displaying multiple windows side by side. High definition television (HDTV) also uses a widescreen aspect ratio.

All types of displays include a projection surface, commonly referred to as the screen. Screen sizes are normally measured in inches from one corner to the corner diagonally across from it. This diagonal measuring system actually came about because the early television manufacturers wanted to make the screen size of their TVs sound more impressive.

Interestingly, the way in which the screen size is measured for CRT and LCD monitors is different. For CRT monitors, screen size is measured diagonally from outside edges of the display casing. In other words, the exterior casing is included in the measurement as seen below.

For LCD monitors, screen size is measured diagonally from the inside of the beveled edge. The measurement does not include the casing as indicated in the image below.

­Because of the differences in how CRT and LCD monitors are measured, a 17-inch LCD display is comparable to a 19-inch CRT display. For a more accurate representation of a CRT"s size, find out its viewable screen size. This is the measurement of a CRT display without its outside casing.

­ Popular screen sizes are 15, 17, 19 and 21 inches. Notebook screen sizes are smaller, typically ranging from 12 to 17 inches. As technologies improve in both desktop and notebook displays, even larger screen sizes are becoming available. For professional applications, such as medical imaging or public information displays, some LCD monitors are 40 inches or larger!

Obviously, the size of the display directly affects resolution. The same pixel resolution is sharper on a smaller monitor and fuzzier on a larger monitor because the same number of pixels is spread out over a larger number of inches. An image on a 21-inch monitor with an 800x600 resolution will not appear nearly as sharp as it would on a 15-inch display at 800x600. ­

Confused about what projection screen size to rent for your meeting, conference, or other event? You’re not alone. Projection screens come in a huge variety of sizes and shapes, and it can get confusing, fast.

But it’s critical to know how big your screen needs to be because there’s no single standard projector screen size. The last thing you want is a screen that can’t be seen by all your attendees, or worse — one that’s not compatible with the space or projector.

Luckily, once you have your basic event details figured out, calculating your screen size comes down to a few simple factors. To figure out the right projector and screen size for your event, you’ll need to know these basics:

For smaller meetings of up to 100 people, a tripod screen is a great option. Tripod screens come in 6′ and 8′ dimensions, can be either 16:9 and 4:3 aspect ratios, and are flexible in an event space. They also have adjustable legs so ceiling heights aren’t a concern, and they don’t require technician setup.

But if your audience is larger than 100 people, you’ll probably need a fastfold screen in the correct size. These screens require a professional to set-up, and you’ll usually need to confirm all the specific details with your AV provider before renting.

Aspect ratio basically means the shape of the screen, based on a ratio of width to height. For example, a 4:3 aspect ratio for a projection screen means that for every 4 feet of width, there will be 3 feet of height.

These days, almost all content created on a computer is going to be in 16:9. But if you’re really unsure and can’t find the answer from your speaker, go with a 16:9 screen because your AV team can more easily adjust 4:3 content to fit on a 16:9 screen than vice versa.

Quick tip: You can find the aspect ratio of your PPT deck by viewing the “Design” tab and selecting “Page Setup” within your Power Point file. The drop down selected in the “Slides sized for” box will show either 4:3 or 16:9. You can view more information on how to change your slide size here.

Also, it’s often best to have screens on each side of the stage so that attendees throughout the space can easily see your content. Two screens also provide uniformity to the stage set. There are lots of variables in choosing the right screen size, so be sure to discuss all the details of your event with your AV provider.

For audiences larger than 1,000 people, you might also consider a truss screen or custom setup. These types of screens can be flown or ground supported, and are available in front or rear projection.

You’re almost there. You’ve chosen your screen size, and now you just have to make sure your venue’s ceilings are tall enough to accommodate the whole set-up.

This is a good rule of thumb to determine your standard screen height without any kind of dress kit or top valence. Adding a dress kit, which makes screens look a little more polished and professional, will add one more foot of height and four feet of width.

Adding legs and a dress kit means that many larger screens can require ceiling heights of 10′ to 15’+, but the average ceiling height of a meeting room is 8′-10′. That’s why it’s so important to confirm ceiling height.

Most venues have room diagrams or layouts online that clearly state the ceiling height. If you aren’t able to find that information, you can always set up a pre-event site survey for an audio visual technician to ensure the screen will fit into the event layout. If your venue doesn’t have high enough ceilings, consider using multiple smaller screens or additional monitors to make sure every guest can see your content.

Some venues aren’t big enough to have enough space between the screen and projector, also called throw distance. You AV provider can help determine your throw distance and the best placement for your projector and screen.

If you already have a projector that you plan to use, it’s important to remember that not all projectors and screens work together. As screens increase in size, the lumens (aka the brightness) required in a projector increase as well.

Think of projectors like a flashlight: The light spreads out across the surface the further away that you are. So, the bigger the screen and the farther away you projector is for the screen, the brighter the light needs to me. If your projector doesn’t produce enough lumens, you may have trouble seeing the content on the screen.

These four steps are a great starting point to choosing the right screen and projector. No two events are alike though, and depending on the full scope of your program, there may be many other factors to take into account.

The SC-1600 is a high resolution LCD screen providing a wide range of popular Snellen, ETDRS, and stereo testing options for binocular vision examinations. A dedicated, solid-state refracting device with an extreme emphasis on precise visual acuities

Marco’s SC-1600 LCD acuity chart is an aesthetically clean dedicated refracting device with an extreme emphasis on precise, high-quality visual acuities. A white background with uniform brightness provides greater contrast and sharper letter edge quality. Contrast sensitivity testing measures contrast at three distinctive levels below the normal threshold.

Instant random access of 33 popular charts via infrared remote control. Chart masking buttons allow the user to isolate individual lines horizontally, vertically, as well as individual letters, numbers, and characters. Three programming buttons isolate separate programs for individual users.

The SC-1600 integrates seamlessly with Marco’s digital refraction systems. This allows for communication between the SC-1600 and devices such as the TRS-5100 Refraction System, providing the ability to control chart functions directly from your refractors control unit.

I’ve reviewed monitors and laptop displays for over a decade. While different monitors suit different owners, I believe the idealhome office monitor has a 27-inch screen and 4K resolution. It uses an IPS panel, reaches a brightness of at least 250 nits, and can display 99 percent of the sRGB color gamut. Around back you’ll find a USB-C port that can deliver enough power to charge a laptop, along with HDMI and DisplayPort, plus an ergonomic stand that can adjust for height and attaches to a VESA mount.

Most standard-width monitors come in one of three sizes: 24-inch, 27-inch, and 32-inch. Bigger is not necessarily better. A large display may look more impressive, but I find it uncomfortable when placed close to my eyes. There are also practical considerations like perceived pixel density. A big monitor will look fuzzier than a smaller monitor of the same resolution unless you move it further away — which isn’t always an option.

You can be creative with size if you mount a VESA-compatible monitor to an arm, as this will let you move it to your preference (including the proper ergonomic height). If you’re just doing it to move a large monitor farther away, though, give it a second thought. Why spend more for a larger monitor, and a monitor arm to position it farther away, instead of buying a smaller display to start?

If you’re looking to stretch more screen across your field of view for multitasking, you might consider an ultrawide monitor instead. There, I think the choice is clear: go for a 34-incher.

Smaller models lack vertical space. A 29-inch ultrawide has less vertical display space than a 24-inch widescreen. Larger models generally have the opposite problem. Many are too big for a typical home office desk, not only because of their screen size, but because of the large stands used to stabilize them (some are several feet wide). You might need to rearrange your desk around a 38-inch or 43-inch monitor or add a top-tier monitor arm to make it work.

Resolution is key. A higher resolution means more pixels, and more pixels means a sharper, crisper image. More pixels also adds flexibility. You can use scaling features in Windows and MacOS to increase content size for readability, or crank it down to show more content at once.

Twenty-four-inch monitors are a different story; 4K is rare, and 1440p is often the premium option. In fact, most monitors of this size are 1080p. It’s not ideal but it’s acceptable, as decreasing size increases pixel density. A 24-inch 1080p monitor is noticeably sharper than a 27-inch 1080p monitor.

Want a 34-inch ultrawide? Look for 3,440 x 1,440 resolution. This leads to a pixel density nearly identical to a 27-inch 1440p monitor (about 109 pixels per inch). A handful of super-budget ultrawides use 2,560 x 1,080 resolution which, like 1080p on a large monitor, isn’t pleasant. LG’s 5K Ultrawide line is the sole option if you want 4K-equivalent pixel density in a 34-inch ultrawide, but you’ll typically pay $1,500 or more. LG’s well-reviewed 38-inch with 3,840 x 1,600 resolution costs even more at $1,600 and, though it might offer more screen, is equal in pixel density to a 3,440 x 1,440 ultrawide.

USB-C monitors are also expensive. The benefits often add several hundred dollars to the price when compared to an otherwise similar monitor that lacks USB-C. It’s worth the money, though: in 2019, I purchased a Viewsonic VG2455-2K for a sweet one-cable connection to USB-C capable laptops, and find it ideal for swiftly connecting my laptop to a larger screen.

If you are looking for an HDR monitor, DisplayHDR certification labels could help, but know that “peak luminance” means “a tiny region on screen can get that bright,” and DisplayHDR 400 is barely HDR at all. Screenshot by Sean Hollister / The Verge

Nearly all monitors sold today use an LCD panel based on one of three technologies: twisted nematic (TN), in-plane switching (IPS), and vertical alignment (VA).

If you demand the very best from a monitor, however, I recommend Mini LED. OLED’s burn-in worries are legitimate on the PC which, compared to a television, will display static images more frequently. Mini LED can’t match OLED’s contrast, but it’s still a major upgrade over a backlit LCD screen. There’s also the emerging category of quantum dot OLED (QD-OLED) screens, but manufacturers haven’t announced prices for those yet.

The statistic shows the average LCD TV screen size in North America from 2017 to 2021. In 2021, the average size of TV screens is expected to reach 55.5 inches, up from 47.8 inches in 2017.Read moreAverage size of LCD TV screens in North America from 2017 to 2021(in inches)CharacteristicScreen size in inches--

GfK, & Various sources (IFA). (January 26, 2018). Average size of LCD TV screens in North America from 2017 to 2021 (in inches) [Graph]. In Statista. Retrieved February 16, 2023, from https://www.statista.com/statistics/950861/north-america-average-tv-screen-size/

GfK, und Various sources (IFA). "Average size of LCD TV screens in North America from 2017 to 2021 (in inches)." Chart. January 26, 2018. Statista. Accessed February 16, 2023. https://www.statista.com/statistics/950861/north-america-average-tv-screen-size/

GfK, Various sources (IFA). (2018). Average size of LCD TV screens in North America from 2017 to 2021 (in inches). Statista. Statista Inc.. Accessed: February 16, 2023. https://www.statista.com/statistics/950861/north-america-average-tv-screen-size/

GfK, and Various sources (IFA). "Average Size of Lcd Tv Screens in North America from 2017 to 2021 (in Inches)." Statista, Statista Inc., 26 Jan 2018, https://www.statista.com/statistics/950861/north-america-average-tv-screen-size/

GfK & Various sources (IFA), Average size of LCD TV screens in North America from 2017 to 2021 (in inches) Statista, https://www.statista.com/statistics/950861/north-america-average-tv-screen-size/ (last visited February 16, 2023)

Average size of LCD TV screens in North America from 2017 to 2021 (in inches) [Graph], GfK, & Various sources (IFA), January 26, 2018. [Online]. Available: https://www.statista.com/statistics/950861/north-america-average-tv-screen-size/

The statistic shows the average size of LCD TV screens in the United States from 1997 to 2022. The average size of LCD TV screens in the United States more than doubled between 1998 and 2018, growing from 23 to 47 inches. This trend is expected to continue, with average LCD TV screen size expected to eclipse 50 inches by 2021.Read moreAverage size of LCD TV screens in the United States from 1997 to 2022(in inches)CharacteristicScreen size in inches--

Consumer Technology Association. (January 14, 2019). Average size of LCD TV screens in the United States from 1997 to 2022 (in inches) [Graph]. In Statista. Retrieved February 16, 2023, from https://www.statista.com/statistics/961283/united-states-average-tv-screen-size/

Consumer Technology Association. "Average size of LCD TV screens in the United States from 1997 to 2022 (in inches)." Chart. January 14, 2019. Statista. Accessed February 16, 2023. https://www.statista.com/statistics/961283/united-states-average-tv-screen-size/

Consumer Technology Association. (2019). Average size of LCD TV screens in the United States from 1997 to 2022 (in inches). Statista. Statista Inc.. Accessed: February 16, 2023. https://www.statista.com/statistics/961283/united-states-average-tv-screen-size/

Consumer Technology Association. "Average Size of Lcd Tv Screens in The United States from 1997 to 2022 (in Inches)." Statista, Statista Inc., 14 Jan 2019, https://www.statista.com/statistics/961283/united-states-average-tv-screen-size/

Consumer Technology Association, Average size of LCD TV screens in the United States from 1997 to 2022 (in inches) Statista, https://www.statista.com/statistics/961283/united-states-average-tv-screen-size/ (last visited February 16, 2023)

Average size of LCD TV screens in the United States from 1997 to 2022 (in inches) [Graph], Consumer Technology Association, January 14, 2019. [Online]. Available: https://www.statista.com/statistics/961283/united-states-average-tv-screen-size/

When we talk about TV size, it is the diagonal length of the TV screen from corner to corner of the visible screen area, excluding the side frames. The picture here shows how a 42 inch TV screen size is measured. Since one inch is equal to 2.54 cms (centimeters), the Metric TV size will be 107cms. The actual measurement may differ a little, but the decimal points are rounded off.

TV normally comes in the following standard sizes (" =inches) 22", 26", 32", 37", 40", 42", 46", 50”, 55", 60" 65" and higher. The corresponding metric size of the TV in centimeters are 56, 65, 81, 94, 102,107, 117, 127,140, 152 and 165 cms respectively.

Without actually measuring the TV width and height it is possible to calculate the width (b) and height (a) of TV screen just by knowing the diagonal size of the TV. This makes it possible to kow the approximate width and height of a TV before even actually buying it. To make the calculations of TV width and height, we make use of the Pythagoras method as shown in the picture here. The HDTV widescreen aspect ratio of 16:9 is used. By knowing beforehand the width and height of TV you can know for sure what size TV will fit in your cabinet or make enough wall space to mount the TV on the wall. Thus a 40 inch HDTV will be 35 inches wide and 20 inches tall. Similarly actual size of 55 inch TV length and width will be 47.9 inch or 121.7cm wide and 27.0 inch or 68.6 cm tall.

Let us assume you have 32 inch 16:9 LCD TV and you want to calculate the size of a 4:3 picture viewed in the 4:3 mode view of the 32" 16:9 television. Using the Pythagoras Theorem the diagonal d=32 inch, therefore the height "a" in the figure is calculated as 15.75 inches. Since ratio is 4:3 the width will be 21 inches. So the 4:3 diagonal size is 26.2 inches on the 32" 16:9 TV. That means the TV 4:3 natural picture without zooming you see on a 32 inch 16:9 widescreen TV is equivalent to a 26 inch CRT TV with a 4:3 ratio. For a 40 inch 16:9 widescreen HDTV, the 4:3 natural picture without zooming will be the equivalent of watching it on a 33 inch 4:3 TV.

There is an ideal distance between TV and sofa seating and this seating distance between Sofa and TV will depend on the size of TV. To know the size of TV to buy, you should first decide where the TV will be placed in the room and then measure how far to sit from LED HDTV or whatever type of TV you plan to buy. Then use the TV size to minimum watching distance chart given below to get an idea of the best size TV to buy.

The table chart below compares TV size to the minimum sitting distance required to watch TV. The TV viewing distance is the distance from the TV screen to the approximate position of your eyes when viewing TV regularly.

TV size and viewing distance are important factors to decide on the size of TV to buy. If you sit too close to a LED HDTV you will see the pixilation squares on the TV screen. As a general rule the TV to sofa distance ratio or HDTV viewing distance is 1.5 times the screen’s diagonal measurement. Thus the best distance to sit from a 60 inch HDTV will be 90 inches or 7.5 feet (about 2.3 meters) from the TV screen

There are no official bodies, as yet, to recommend viewing distance for TV size. One of the leading Companies in the world of surround sound, THX, recommends viewing distance as follows.

How do you calculate the best seat-to-screen distance for a TV or projection screen? Divide the size of your screen by .84 (screen size is measured diagonally). For example, a 65-inch TV divided by .84 equals a 77-inch viewing distance (6.5 feet).

1) THX screen size recommendations are based on recreating an immersive cinematic experience, and 2) the biggest complaint among TV buyers is that they wish they had bought a bigger set.

The THX TV viewing calculation of dividing TV size by 0.84 (which in effect is multiplying TV size by 1.19) may be very good for the latest generation of Ultra HDTV, but we maintain that the minimum viewing distance for regular HDTV should be 1.5 times the screen size of HDTV. Sitting closer to HDTV than this 1.5 ratio may make you notice the little square pixelation on the screen.

The TV Size to Viewing Distance chart below is about how close you can sit when watching TV and is based on a factor of 1.5 TV size for HDTV and a factor of 1.19 (divide by 0.84) as recommended by THX for watching Ultra HDTV. The distances mentioned in the chart are the closest distance to watch TV for HDTV or Ultra HDTV.

The best TV height is eye level height. The middle of the TV screen should be below your eye level, one third of the TV height from top down as shown in the picture on the left. To put it more clearly divide the TV height by 3. When you sit to watch TV, your eye level should be one third of the TV height down from the top of the TV. The figure on the left shows how.

Our eyes are more comfortable looking slightly down than looking up, that is why the TV should be placed slightly below eye level. It is recommended that neither the top nor the bottom of the TV should be more than 15 degrees from the horizontal plane of your eye level. If you are watching TV lying down, then the TV can be mounted higher up for ease of TV viewing, but make sure that theTV is tilted down so that your line of vision falls at 90 degrees on the TV screen plane.

This is the ratio between the width and height of the visible TV screen. HD TV has an aspect ratio of 16:9, CRT TV has an Aspect Ratio of 4:3. As a TV Aspect Ratio guide we will make a TV Aspect Ratio comparison of common TV formats like 640:480 which is the same as 4:3, similarly 1280:720 and 1920:1080 works out to 16:9. These are not the only TV aspect ratios, there are some other TV Aspect Ratios which are not so common like the 16:9 and 4:3.

When a 16:9 movie is squeezed and compressed into 4:3 format movie, people and objects look very thin. When widescreen video images are squeezed to fit a narrower aspect ratio it is called "Anamorphic Video". When expanded into 16:9 ratio they look normal. In order to save bandwidth while transmitting TV stations broadcast widescreen movies in the 4:3 format and the viewer can expand it into the 16:9 format and watch the movie normally.

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:

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.