tft lcd aspect ratio quotation

LCD stands for “Liquid Crystal Display” and TFT stands for “Thin Film Transistor”. These two terms are used commonly in the industry but refer to the same technology and are really interchangeable when talking about certain technology screens. The TFT terminology is often used more when describing desktop displays, whereas LCD is more commonly used when describing TV sets. Don’t be confused by the different names as ultimately they are one and the same. You may also see reference to “LED displays” but the term is used incorrectly in many cases. The LED name refers only to the backlight technology used, which ultimately still sits behind an liquid crystal panel (LCD/TFT).

As TFT screens are measured differently to older CRT monitors, the quoted screen size is actually the full viewable size of the screen. This is measured diagonally from corner to corner. TFT displays are available in a wide range of sizes and aspect ratios now. More information about the common sizes of TFT screens available can be seen in our section about resolution.

The aspect ratio of a TFT describes the ratio of the image in terms of its size. The aspect ratio can be determined by considering the ratio between horizontal and vertical resolution.

Ultra-high resolution panels will offer varying aspect ratios including Ultra HD (3840 x 2160 = 16:9), 4K (4096 x 2160 = an odd 1:9:1 aspect ratio) and 5K (5120 x 2880 = 16:9)

The resolution of a TFT is an important thing to consider. All TFT’s have a certain number of pixels making up their liquid crystal matrix, and so each TFT has a “native resolution” which matches this number. It is always advisable to run the TFT at its native resolution as this is what it is designed to run at and the image does not need to be stretched or interpolated across the pixels. This helps keep the image at its most clear and at optimum sharpness. Some screens are better than others at running below the native resolution and interpolating the image which can sometimes be useful in games.

You generally cannot run a TFT at a resolution of above its native resolution although some screens have started to offer “Virtual” resolutions, for example “virtual 4k” where the screen will accept a 3840 x 2160 input from your graphics card but scale it back to match the native resolution of the panel which is often 2560 x 1440 in these examples. This whole process is rather pointless though as you lose a massive amount of image quality in doing so.

Make sure your graphics card can support the desired resolution of the screen you are choosing, and based on your uses. If you are a gamer, you may want to consider whether your graphics card can support the resolution and refresh rate you will want to use to power your screen. Also keep in mind whether you are planning to connect external devices and the resolution they are designed to run at. For instance if you have a 16:10 format screen and plan to use an external device which runs at 16:9, you will need to ensure the screen is able to scale the image properly and add black borders, instead of distorting the aspect ratio of the image.

Generally you will need to take scaling in to consideration when purchasing any ultra-high resolution screen, unless it’s of a very large size. The scaling ability does vary however between different operating systems so be careful. Apple OS and modern Windows (8 and 10) are generally very good at handling scaling for ultra-high res displays. Older operating systems are less capable and may sometimes be complicated. You will also find varying support from different applications and games, and often end up with weird sized fonts or sections that are not scaled up and remain extremely small. A “standard” resolution where you don’t need to worry about scaling might be simpler for most users.

Unlike on CRT’s where the dot pitch is related to the sharpness of the image, the pixel pitch of a TFT is related to the distance between pixels. This value is fixed and is determined by the size of the screen and the native resolution (number of pixels) offered by the panel. Pixel pitch is normally listed in the manufacturers specification. Generally you need to consider that the ‘tighter’ the pixel pitch, the smaller the text will be, and potentially the sharper the image will be. To be honest, monitors are normally produced with a sensible resolution for their size and so even the largest pixel pitches return a sharp images and a reasonable text size. Some people do still prefer the larger-resolution-crammed-into-smaller-screen option though, giving a smaller pixel pitch and smaller text. It’s down to choice and ultimately eye-sight.

For instance you might see a 35″ ultra-wide screen with only a 2560 x 1080 resolution which would have a 0.3200 mm pixel pitch. Compare this to a 25″ screen with 2560 x 1400 resolution and 0.2162 mm pixel pitch and you can see there will be a significant different in font size and image sharpness. There are further considerations when it comes to the pixel pitch of ultra-high resolution displays like Ultra HD and 4K. See the section on PPI for more information.

While this aspect is not always discussed by display manufacturers it is a very important area to consider when selecting a TFT monitor. The LCD panels producing the image are manufactured by many different panel vendors and most importantly, the technology of those panels varies. Different panel technologies will offer different performance characteristics which you need to be aware of. Their implementation is dependent on the panel size mostly as they vary in production costs and in target markets. The four main types of panel technology used in the desktop monitor market are:

TN Film was the first panel technology to be widely used in the desktop monitor market and is still regularly implemented in screens of all sizes thanks to its comparatively low production costs. TN Film is generally characterized by good pixel responsiveness making it a popular choice for gamer-orientated screens. Where overdrive technologies are also applied the responsiveness is improved further. TN Film panels are also available supporting 120Hz+ refresh rates making them a popular choice for stereoscopic 3D compatible screens. While older TN Film panels were criticized for their poor black depth and contrast ratios, modern panels are actually very good in this regard, often producing a static contrast ratio of up to 1000:1. Perhaps the main limitation with TN Film technology is its restrictive viewing angles, particularly in the vertical field. While specs on paper might look promising, in reality the viewing angles are restrictive and there are noticeable contrast and gamma shifts as you change your line of sight. TN Film panels are normally based around a 6-bit colour depth as well, with a Frame Rate Control (FRC) stage added to boost the colour palette. They are often excluded from higher end screens or by colour enthusiasts due to this lower colour depth and for their viewing angle limitations. TN Film panels are regularly used in general lower end and office screens due to cost, and are very popular in gaming screens thanks to their low response times and high refresh rate support. Pretty much all of the main panel manufacturers produce TN Film panels and all are widely used (and often interchanged) by the screen manufacturers.

IPS was originally introduced to try and improve on some of the drawbacks of TN Film. While initially viewing angles were improved, the panel technology was traditionally fairly poor when it came to response times and contrast ratios. Production costs were eventually reduced and the main investor in this technology has been LG.Display (formerly LG.Philips). The original IPS panels were developed into the so-called Super IPS (S-IPS) generation and started to be more widely used in mainstream displays. These were characterized by their good colour reproduction qualities, 8-bit colour depth (without the need for Frame Rate Control) and very wide viewing angles. These panels were traditionally still quite slow when it came to pixel response times however and contrast ratios were mediocre. In more recent years a change was made to the pixel alignment in these IPS panels (see our detailed panel technology article for more information) which gave rise to the so-called Horizontal-IPS (H-IPS) classification. With the introduction of overdrive technologies, response times were improved significantly, finally making IPS a viable choice for gaming. This has resulted more recently in IPS panels being often regarded as the best all-round technology and a popular choice for display manufacturers in today’s market. Improvements in energy consumption and reduced production costs lead to the generation of so-called e-IPS panels. Unlike normal 8-bit S-IPS and H-IPS classification panels, the e-IPS generation worked with a 6-bit + FRC colour depth. Developments and improvements with colour depths also gave rise to a generation of “10-bit” panels with some manufacturers inventing new names for the panels they were using, including the co-called Performance-IPS (p-IPS). It is important to understand that these different variants are ultimately very similar and the names are often interchanged by different display vendors. For more information, see our detailed panel technologies guide.

Nowadays IPS panels are produced and developed by several leading panel manufacturers. LG.Display technically own the IPS name and continue to invest in this popular technology. Samsung began production of their very similar PLS (Plane to Line Switching) technology, as did AU Optronics with their AHVA (Advanced Hyper Viewing Angle). These are all so similar in performance and features that they can be simply referred to now as “IPS-type”. Indeed monitor manufacturers will normally stick to the common IPS name but the underlying panel may be produced by any number of different manufacturers investing in this type of panel tech. AU Optronics have done a good job with finally increasing the refresh rate of their IPS panels, and making them a more viable option for gamers. Native 144Hz IPS-type panels are now available and response times continue to be reduced as well. Modern IPS panels are characterized by decent response times, if not quite as fast as TN Film they are certainly more fluid than older panels. Contrast ratios are typically around 1000:1 and viewing angles continue to be the widest and most stable of any panel technology. You will find varying colour depths including 6-bit+FRC and 8-bit commonly being used, although this makes little difference in practice. One of the remaining limitations with IPS-type technologies are the so-called “IPS glow”, where darker content introduces a pale glow when viewed from an angle. It’s a characteristic of the panel technology and pretty hard to avoid without additional filters being added to the panels. On larger and wider screens some people find this glow distracting and problematic.

The original early VA panels were quickly scrapped due to their poor viewing angles, and in their place came the two main types of VA matrix. Multi-Domain Vertical Alignment (MVA) and Patterned Vertical Alignment (PVA) panels. These VA variants were characterized by their reasonably wide viewing angles, being better than TN Film but not as wide as IPS. They were originally poor when it came to pixel response times but offered 8-bit colour depths and the best static contrast ratios of all the technologies discussed here. Traditionally VA panels were capable of static contrast ratios of around 1000 – 1200:1 but this has even been improved now to 3000:1 and above. Until very recently VA panels remained very slow and so were not really suitable for gaming. However during 2012 we saw advancements with the latest generation of VA panels and through the use of overdrive technologies this has been significantly improved. Perhaps the main limitation with VA panels is still their viewing angles when compared with popular IPS panel options. Gamma and contrast shifts can be an issue and the technology also suffers from an inherent off-centre contrast shift issue which can be distracting to some users. Through the years we have seen several different generations of VA panels. AU Optronics are the main manufacturer of MVA matrices, and we have seen the so-called Premium-MVA (P-MVA) and Advanced-MVA (AMVA) generations emerge. Chi Mei Innolux (previously Chi Mei Optoelectronics / CMO) also make their own variant of MVA which they call Super-MVA (S-MVA).The only manufacturer of PVA panels is Samsung as it is their own version of VA technology. We have seen several generations from them including Super-PVA (S-PVA) and cPVAandSVA. For more information, see our detailed panel technologies guide.

This technology was developed by Sharp for use in some of their TFT displays. It consists of several improvements that Sharp claim to have made, mainly to counter the drawbacks of the popular TN Film technology. They have introduced an Anti-Glare / Anti-Reflection (AGAR) screen coating which forms a quarter-wavelength filter. Incident light is reflected back from front and rear surfaces 180° out of phase, thus canceling reflection rather diffusing it as others do. As well as reducing glare and reflection from the screen, this is marketed as being able to offer deeper black levels. Sharp also claim to offer better contrast ratios than any competing technology (VA and IPS); but with more emphasis on improving these other technologies, this is probably not the case with more modern panels. There are very few ASV monitors around really, with the majority of the market being dominated by TN, VA and IPS panels.

This technology was developed by BOE Hydis, and is not really very widely used in the desktop TFT market, more in the mobile and tablet sectors. It is worth mentioning however in case you come across displays using this technology. It was developed by BOE Hydis to offer improved brightness and viewing angles to their display panels and claims to be able to offer a full 180/180 viewing angle field as well as improved colours. This is basically just an advancements from IPS and is still based on In Plane technology. They claim to “modify pixels” to improve response times and viewing angles thanks to improved alignment. They have also optimised the use of the electrode surface (fringe field effect), removed shadowed areas between pixels, horizontally aligned electric fields and replaced metal electrodes with transparent ones. More information about AFFS can be found here.

This panel technology was developed by NEC LCD, and is reported to offer wide viewing angles, fast response times, high luminance, wide colour gamut and high definition resolutions. Of course, there is a lot of marketing speak in there, and the technology is not widely employed in the mainstream monitor market. Wide viewing angles are possible thanks to the horizontal alignment of liquid crystals when electrically charged. This alignment also helps keep response times low, particularly in grey to grey transitions. Their SFT range also offers high definition resolutions and are commonly used in medical displays where extra fine detail is required.

NEC’s SFT technology was first developed to be labelled as Advanced-SFT (A-SFT) which offered enhanced luminance figures. This then developed further to Super Advanced-SFT (SA-SFT) where colour gamut reached 72% of the NTSC colour space, and then to Ultra Advanced-SFT (UA-SFT) where the gamut was still at 72% or higher, but with a further enhancement of the luminance as compared with SA-SFT. These changes were all made possible thanks to the improved transmissivity of the SFT technology. More information is available from NEC LCD

As you can see from the graph, the actual response time can vary quite considerably across the whole grey range, with some changes being much slower. This is the reason you cannot always rely on quoted specs to give an accurate representation of a screens actual pixel response performance. The quoted figures from manufacturers should be treated as a rough guide however to a panels response time, as generally there has been some improvements in the overall latency with the changes from 25ms > 16ms > 12ms > 8ms > 5ms panel generations for instance. The shape of the graph is likely to remain quite similar, but overall, the curve will probably be a little lower when comparing an 8ms to a 16ms for instance. Overall it won’t be twice as fast though.

One thing to note regarding pixel response time is that the overall performance of the TFT will also depend on the technology of the panel used. TN film panels offer response time graphs similar to that above, but screens based on traditional VA / IPSvariant panels can show response time graphs more like this (we are assuming for now non-overdriven panels):

Some reviews sites including TFTCentral have access to advanced photosensor (photodiodе + low-noise operational amplifier) and oscilloscope measurement equipment which allows them to measure response time as detailed above. See our article about response times for more information on that method. Graphs showing response time according to their equipment are produced. Other sites rely on observed responsiveness to compare how well a panel can perform in practice and what a user might see in normal use. We think it is important to study both methods if possible to give a fuller picture of a panels performance. For visual tests TFTCentral uses a program called PixPerAn (developed by Prad.de) which is good for comparing monitor responsiveness with its series of tests. The favourite seems to be the moving car test as shown here:

In addition to pixel response time measurements and visual tests described above, it is also possible to capture the levels of blurring and smearing the human eye will experience on a display. This is achieved using a pursuit camera setup. They are simply cameras which follow the on-screen motion and are extremely accurate at measuring motion blur, ghosting and overdrive artefacts of moving images. Since they simulate the eye tracking motion of moving eyes, they can be useful in giving an idea of how a moving image appears to the end user. It is the blurring caused by eye tracking on continuously-displayed refreshes (sample-and-hold) that we are keen to analyse with this new approach. This is not pixel persistence caused by response times; but a different cause of display motion blur which cannot be captured using static camera tests. Low response times do have a positive impact on motion blur, and higher refresh rates also help reduce blurring to a degree. It does not matter how low response times are, or how high refresh rates are, you will still see motion blur from LCD displays under normal operation to some extent and that is what this section is designed to measure. Further technologies specifically designed to reduce perceived motion blur are required to eliminate the blur seen on these type of sample-and-hold displays which we will also look at.

These tests capture the kind of blurring you would see with the naked eye when tracking moving objects across the screen (example from the Asus ROG Swift PG279Q). As you increase the refresh rate the perceived blurring is reduced, as refresh rate has a direct impact on motion blur. It is not eliminated entirely due to the nature of the sample-and-hold LCD display and the tracking of your eyes. No matter how fast the refresh rate and pixel response times are, you cannot eliminate the perceived motion blur without other methods.Tests like the above would give you an idea of the kind of perceived motion blur range when using the particular screen without any bur reduction mode active.

The Contrast Ratio of a TFT is the difference between the darkest black and the brightest white it is able to display. This is really defined by the pixel structure and how effectively it can let light through and block light out from the backlight unit. As a rule of thumb, the higher the contrast ratio, the better. The depth of blacks and the brightness of the whites are better with a higher contrast ratio. This is also referred to as the static contrast ratio.

When considering a TFT monitor, a contrast ratio of 1000:1 is pretty standard nowadays for TN Film and IPS-type panels. VA-type panels can offer static contrast ratios of 3000:1 and above which are significantly higher than other competing panel technologies.

Some technologies boast the ability to dynamically control contrast (Dynamic Contrast Ratio – DCR) and offer much higher contrast ratios which are incredibly high (millions:1 for instance!). Be wary of these specs as they are dynamic only, and the technology is not always very useful in practice. Traditionally, TFT monitors were said to offer poor black depth, but with the extended use of VA panels, the improvements from IPS and TN Film technology, and new Dynamic Contrast Control technologies, we are seeing good improvements in this area. Black point is also tied in to contrast ratio. The lower the black point, the better, as this will ensure detail is not lost in dark image when trying to distinguish between different shades.

Brightness as a specification is a measure of the brightest white the TFT can display, and is more accurately referred to as its luminance. Typically TFT’s are far too bright for comfortable use, and the On Screen Display (OSD) is used to turn the brightness setting down. Brightness is measure in cd/m2 (candella per metre squared). Note that the recommended brightness setting for a TFT screen in normal lighting conditions is 120 cd/m2. Default brightness of screens out of the box is regularly much higher so you need to consider whether the monitor controls afford you a decent adjustment range and the ability to reduce the luminance to a comfortable level based on your ambient lighting conditions. Different uses may require different brightness settings as well so it is handy when reviews record the luminance range possible from the screen as you adjust the brightness control from 100 to 0%.

The colour depth of a TFT panel is related to how many colours it can produce and should not be confused with colour space (gamut). The more colours available, the better the colour range can potentially be. Colour reproduction is also different however as this related to how reliably produced the colours are compared with those desired.

Colour gamut in TFT monitors refers to the range of colours the screen is capable of displaying, and how much of a given reference colour space it might be able to display. It is ultimately linked to backlight technology and not to the panel itself.

Laser Displays are capable of producing the biggest colour gamut for a system with three basic colours, but even a laser display cannot reproduce all the colours the human eye can see, although it is quite close to doing that. However, in today’s monitors, both CRT and LCD (except for some models I’ll discuss below), the spectrum of each of the basic colours is far from monochromatic. In the terms of the CIE diagram it means that the vertexes of the triangle are shifted from the border of the diagram towards its centre.

Traditionally, LCD monitors were capable of giving approximate coverage of the sRGB reference colour space as shown in the diagram above. This is defined by the backlighting used in these displays – Cold-cathode fluorescent lamps (CCFL) that are employed which emit radiation in the ultraviolet range which is transformed into white colour with the phosphors on the lamp’s walls. These backlight lamps shine through the LCD panel, and through the RGB sub-pixels which act as filters for each of the colours. Each filter cuts a portion of spectrum, corresponding to its pass-band, out of the lamp’s light. This portion must be as narrow as possible to achieve the largest colour gamut.

To help develop and improve on the colour space a screen is capable of displaying a new generation CCFL backlighting was introduced. These so-called “wide gamut” backlights allow a gamut coverage of typically 92 – 102% of the NTSC colour space. There is a difference in practice which all users should be able to detect. The colour space available is extended mainly in green shades as you can see from the image above. Red coverage is also extended in some cases. This extended colour space sounds appealing on face value since the screens featuring WCG-CCFL backlighting can offer a broader range of colours. Manufacturers will often promote the colour space coverage of their screens with these high figures. In practice you need to consider what impact this would have on your use.

It’s important to consider what colour space your content is based around. sRGB has long been the preferred colour space of all monitors, and is in fact the reference for the Windows operating system and the internet. As such, most content an average user would ever use is based on sRGB. If you view sRGB content on a wide gamut screen then this can lead to some colours looking incorrect as they are not mapped correctly to the output device. In practice this can lead to oversaturation, and greens and reds can often appear false, oversaturated or neon-like. Colour managed applications and a colour managed workflow can prevent this but for the average user the cross-compatibility of widely used sRGB content and a wide gamut screen may present problems and prove troublesome. Some users don’t object to the over saturated and ‘cartoony’ colours for their use, but to many, it is an issue.

You will commonly see a monitor’s gamut listed as a percentage compared with a reference colour space. This will vary depending on which reference a manufacturer uses, but commonly you will see a % against the NTSC or Adobe RGB colour spaces. Bear in mind also that the gamut / colour space of the sRGB standard equates to about 72 – 75% of the NTSC reference. This is the standard colour space for the Windows operating system and the internet, and so where extended colour spaces are produced from a monitor, considerations need to be made as to the colour space of the content you are viewing.

Viewing angles are quoted in horizontal and vertical fields and often look like this in listed specifications: 170/160 (170° in horizontal viewing field, 160° in vertical). The angles are related to how the image looks as you move away from the central point of view, as it can become darker or lighter, and colours can become distorted as you move away from your central field of view. Because of the pixel orientation, the screen may not be viewable as clearly when looking at the screen from an angle, but viewing angles of TFT’s vary depending on the panel technology used.

TFT screens do not refresh in the same way as a CRT screen does, where the image is redrawn at a certain rate. As a TFT is a static image, and each pixel refreshes independently, setting the TFT at a common 60Hz native refresh rate does not cause the same problems as it would on a CRT. There is no cathode ray gun redrawing the image as a whole on a TFT. You will not get flicker, which is the main reason for having a high refresh rate on a CRT in the first place. Standard TFT monitors operate with a 60Hz recommended refresh rate, but can sometimes support up to 75Hz maximum (within the spec) or sometimes even further using ‘overclocking’ methods. The reason that 60Hz is recommended by all the manufacturers is that it is related to the vertical frequency that TFT panels run at. Some more detailed data sheets for the panels themselves clearly show that the operating vertical frequency is between about 56 and 64Hz, and that the panels ‘typically’ run at 60Hz (see the LG.Philips LM230W02 datasheet for instance – page 11). If you decide to run your refresh rate from your graphics card above the recommended 60Hz it will work fine, but the interface chip on the monitor will be in charge of scaling the frequency down to 60Hz anyway. Some screens will allow you to run at the maximum 75Hz as well for an additional boost in frame rates and some minor improvements in motion clarity. The support of this will really depend on the screen, your graphics card and the video connection being used. You may find the screen operates fine at the higher refresh rate setting but in reality the screen will often drop frames to meet the 60Hz recommended setting (or spec of the panel) anyway. Generally we would suggest sticking to 60Hz on standard TFT monitors.

You will see more mention of higher refresh rates from both LCD televisions and now desktop monitors. It’s important to understand the different technologies being used though and what constitutes a ‘real’ 120Hz and what is ‘interpolated’:

Interpolated 120Hz+– These technologies are the ones commonly used in LCD TV’s where TV signal input is limited to 50 / 60 Hz anyway (depending on PAL vs NTSC). To help overcome the issues relating to motion blur on such sets, manufacturers began to introduce a technology to artificially boost the frame rate of the screen. This is done by an internal processing within the hardware which adds an intermediate and interpolated (guessed / calculated) frame between each real frame, boosting from 50 / 60fps to 100 / 120 fps. This technology can offer a noticeable improvement in practice when it is controlled very well. Some sets even have 240 and 480Hz technologies which operate in the same way, but with further interpolation and inserted frames. See here for further information.

Manufacturer specifications will usually list power consumption levels for the monitor which tell you the typical power usage you can expect from their model. This can help give you an idea of running costs, carbon footprint and electricity demands which are particularly important when you’re talking about multiple monitors or a large office environment. Power consumption of an LCD monitor is typically impacted by 3 areas:

This relates to the connection type from the TFT to your PC or other external device. Older screens nearly all came with an analogue connection, commonly referred to as D-sub or VGA. This allows a connection from the VGA port on your graphics card, where the signal being produced from the graphics card is converted from a pure digital to an analogue signal. There are a number of algorithms implemented in TFT’s which have varying effectiveness in improving the image quality over a VGA connection. Some TFT’s with then offer a DVI input as well to allow you to make use of the DVI output from your graphics card which you might have. This will allow a pure digital connection which can sometimes offer an improved image quality. It is possible to get DVI – VGA converters. These will not offer any improvements over a standard analogue connection, as you are still going through a conversion from digital to analogue somewhere along the line. Dual-Link DVI is also sometimes used which is a single DVI connection but with more pins, allowing for higher resolution/refresh rate support than a single-link DVI.

i-Tech customer service reps are here to help you with your inquiry for Industrial monitors, panel pc, and outdoor LCD. From any general questions to technical support, we leave you feeling completely satisfied with our excellent LCD quality as well.

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Products»All Products»Power & UPS»Batteries & Ultracapacitors»Standard DC-DC Power»Smart DC-DC Power»Smart Battery Chargers»Galvanically Isolated Power Supplies»24V Output Supplies»Ultracapacitor Chargers»Adjustable Output Power Supplies»Universal Chargers»Uninterruptible Power Supplies»Embedded Boards»I/O & Communication»Embedded CAN bus Modules»Embedded Ethernet Switches»Embedded Digital IO Modules»Embedded Analog IO Modules»Embedded Serial IO Modules»PCIe Mini Cards»Embedded Power Supplies»Standard Embedded Power»Smart Embedded Power»PC/104 Power Supplies»Embedded UPS Modules»Embedded Motherboards»PC/104 Motherboards»ETX Motherboards»COM Express Motherboards»EPIC Motherboards»EBX Motherboards»Mini-ITX Motherboards»Micro-ATX Motherboards»Industrial ATX Motherboards»Embedded GPS Modules»GPS Receiver Modules»Embedded GPS Antennas»CPU Boards & SBC»PC/104 SBC»EPIC SBC»ETX SBC»EBX SBC»Mini-ITX SBC»ARM CPU Modules»Micro-ATX SBC»Embedded ATX SBC»Com Express SBC»Embedded Ultracapacitor Modules»Embedded Battery Modules»Embedded Video Cards»Systems»Fanless Box PC»Wide Temperature»Industrial Automation Computers»Rugged Vehicle Computers»Railway Computers»Vehicle Tracking Systems»Industrial Rackmount Computers»Wide Temperature Systems»Digital Displays»Marine Monitors»Rugged LCD Displays»Wide Temperature LCD Displays»Waterproof LCD Panels»Advertising LCD Displays»Stretched Bar LCD»Sunlight Readable LCD Displays»Public Transportation LCD Displays»Railway LCD Displays»Outdoor LCD Displays»High Brightness LCD Displays»Extended Temperature LCD Displays»Industrial Monitors»Panel Computing»Marine Panel PC»Infotainment Panel PC»Wide Temperature Panel PC»HMI Panel PC»Modular Panel PC»Mobile Computing»Rugged Tablets»Rugged Windows Tablets»Rugged Android Tablets»Rugged PDA»Antennas»GPS Antennas»External GPS Antennas»Passive GPS Antennas»Active GPS Antennas»Marine GPS Antennas»Internal GPS Antennas»GNSS Antennas»GLONASS Antennas»Multi-Band Antennas»GPS-GLONASS Antennas»Iridium Antennas»GPS & RF Signal Distribution»GPS Amplifiers»Low Noise Amplifiers»GPS Receivers»Marine GPS Receivers»GPS Attenuators»GPS Combiners»GPS Splitters»Active GPS Splitters»Military GPS Splitters»Rackmount GPS Splitters»Passive GPS Splitters»Repeaters»GPS Repeaters»GLONASS Repeaters»GPS Filters»Enclosures & Chassis»PC/104 Chassis»Rugged Mini-ITX Cases»EPIC Enclosures»EBX Enclosures»Memory & Storage»Memory»Flash Storage»Industrial SSD»SATA Disk On Modules»Industrial Micro SD Cards»Industrial SD Cards»Industrial CompactFlash Cards»Sensors»Industrial Networking»Manufactured by Tri-M»Power & UPS»Standard Power Supplies»HE104: 60 Watt»HE104-DX: 60 Watt»HE104-75W: 75 Watt»HE104+DX: 108 Watt»HE-HP: 100 Watt»Smart Power Supplies (PowerOS)»HESC-SERD: 60 Watt»HESC104+: 108 Watt»HPS3512: 203 Watt»HPSP-XYZ: 240W Programmable»V12SC-SER[-UPS]»TPS1000: 35 Watt, 42 Watt»TPSi1075: 75 Watt, Isolated»TPSi1085: 85 Watt, Isolated»HPSC104-SER: 160 Watt»HESC104: 60 Watt»TPS1035»TPC1000»HPS3524»Smart UPS (PowerOS)»TUP1000: Ultracapacitor UPS»V5SC-SER-UPS: NiMh Battery UPS»UltraUPS»V12SC-SER[-UPS]»Ultra Capacitor Packs»TBP4xxx»Battery Backup Packs»BAT-NiMh45»BAT104-NiMh»BAT104-NiCd»BAT-SLA(25/45)»UltraUPS»Heavy Duty Transient Stopper»CPU Modules»I/O & Communication»Input / Output»IO104-60IN: PC104 I/O Board»IR104 PC/104 Relay Module»Communication»TCB1000 PC/104 Com Board»FlexCom104-GPS»Enclosures»VersaTainer: PC104 & EBX»CanTainer: PC104»FlexTainer: EPIC, MITX, EBX»GPS & Networking»GPS & Networking Boards»FlexCom104-GPS»Antennas»Mighty Mouse: Small GPS Antenna»Micro Mouse: Micro GPS Antenna»Big Brother»Re-Radiators»Super-Radiator»Xtreme-Radiator»Vehicle GPS Repeater»Complete System Solutions»HECS1000 System»UltraUPS Complete Backup Solution»Support Products & Accessories»PC104-T AC Termination Modules»Extract104»TS-I2C Temperature Sensor»DA104»VSX-2812 Video Modules»ISA104X1»Postcode104»Legacy Products»Distributed by Tri-M»Diamond Systems»Single Board Computers»Aurora PC/104 SBC»Helios PC/104 SBC»Neptune EPIC SBC»Pluto ETX SBC»Hercules III EBX SBC»IEI»IEI Mobile»MicroMax Computer Intelligence»San Jose Technology (SANAV)»GNSS Repeaters»RK-306»RK-106»Innodisk»GPS Networking»Litemax»Spanpixel»Durapixel»Navpixel»Aaeon Electronics»Systems»Fanless Embedded Computers»Entry-Level Box PC»ICOP Technology»ICOP-2811»VDX2-6554»VEX-6254»VSX-2812S»86Duino Enjoy Desktop 3D Printer»MPLSelector Guides»Power Selector Guide»Backup Power SelectorServices»Conformal Coating»HumiSeal 1B31»Laser Engraving & EtchingTri-M Rugged»PowerOS»Mining Applications»Mining Application Story»Rail & ITS Applications»Automation & Manufacturing»Mil-Aero Defence & Aerospace»Aerospace Application StorySupportAbout Us»About Us»Privacy PolicywebstoreTriple Programmable PSUQuote Request

75inch ultra-wide TFT LCD bespoken display, 3840*1440 resolution, 700nits brightness for crystal image, integrated Android operating system and free CMS

The AVL-SD750 is a 75inch color TFT-LCD display with special aspect ratio 16:6 and wide resolution 3840*1440, it is AVLink stretched bar LCD display series product which designed for high brightness 500nits with power efficiency LED backlight. It provides LCD panel with specific aspect ratios and high brightness for digital signage, public transportation, exhibition hall, department store, and vending machine.

AVLink is a leading designer, manufacturer and seller of TFT LCD signs, including indoor digital advertising displays, interactive information kiosks, shelf edge screen, video-wall, interactive whiteboard, smart table, stretched cut monitor, digital menu board, as well as outdoor totem, passenger information displays systems, dynamic wayfinding, E-Paper, QLED and OLED screen.

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.

LCD computer displays with a 16:10 ratio first rose to mass market prominence in 2003. By 2008, the 16:10 aspect ratio had become the most common aspect ratio for LCD monitors and laptop displays.16:9 became the mainstream standard. This shift was driven by lower manufacturing costs and the 16:9 aspect ratio being used as a standard in modern televisions.

Until about 2003, most computer monitors had a 4:3 aspect ratio, with some using a 5:4 ratio. Between 2003 and 2006, monitors with 16:10 aspect ratios became commonly available, first in laptops, and later in display monitors. Such displays were considered better suited for word processing and computer-aided design.

From 2005 to 2008, 16:10 overtook 4:3 as the highest-selling aspect ratio for LCD monitors. At the time, 16:10 made up 90% of the notebook market, and was the most commonly used aspect ratio for laptops.

Around 2008–2010, computer display manufacturers began a rapid shift to the 16:9 aspect ratio. By 2011, 16:10 had almost disappeared from new mass-market products. By October 2012, the market share of 16:10 displays had dropped to less than 23%, according to Net Applications.

The primary reason for this move was considered to be production efficiency:resolutions. This helped consumers adopt such products more easily, "stimulating the growth of the notebook PC and LCD monitor market".

The shift from 16:10 to 16:9 was met with a mixed response. The lower cost of 16:9 computer displays was seen as a positive, along with their suitability for gaming and movies, as well as the convenience of having the same aspect ratio in different devices.

Several companies still offer 16:10 aspect ratio monitors as of March 2021. These monitors are intended for photographers, video editors, digital artists, desktop publishers, graphic designers, and business customers.

In 2020, Dell released high-end productivity laptops with the 16:10 aspect ratio, and Microsoft launched a new version of its 3:2 Surface Book. The version of the Dell XPS produced around this time was the first that moved away from the classic 16:9 aspect ratio. Other examples include the Acer Swift 3, LG Gram, and Asus ProArt Studiobook.Steam Deck, a handheld gaming computer produced by Valve, was announced, featuring a 16:10 display.Apple used 16:10 aspect ratios in its MacBook lineup of laptops until late 2021, when they were changed to a slightly taller 1.55:1 (16:10.3) ratio.

Tablets started to enjoy mainstream popularity beginning late 2010/early 2011 and remain popular to the present day. Aspect ratios for tablets typically include 16:10, 16:9, and 4:3. Tablets have caused a shift in production away from purely 16:9 aspect ratios and a resurgence of "productivity" aspect ratios (including 16:10 and 4:3) in place of "media" aspect ratios (16:9 and ultra-widescreen formats). The format remains widely popular in the TV and smartphone industries, where it is more suited.

Many Android tablets have a 16:10 aspect ratio, because the 16:10 aspect ratio is suitable for reading books, and many papers have an aspect ratio close to 16:10 (e.g., ISO 216 papers use the 1:1.414 aspect ratio).

75inch ultra-wide TFT LCD bespoken display, 3840*1440 resolution, 700nits brightness for crystal image, integrated Android operating system and free CMS

The AVL-SD750 is a 75inch color TFT-LCD display with special aspect ratio 16:6 and wide resolution 3840*1440, it is AVLink stretched bar LCD display series product which designed for high brightness 500nits with power efficiency LED backlight. It provides LCD panel with specific aspect ratios and high brightness for digital signage, public transportation, exhibition hall, department store, and vending machine.

AVLink is a leading designer, manufacturer and seller of TFT LCD signs, including indoor digital advertising displays, interactive information kiosks, shelf edge screen, video-wall, interactive whiteboard, smart table, stretched cut monitor, digital menu board, as well as outdoor totem, passenger information displays systems, dynamic wayfinding, E-Paper, QLED and OLED screen.

The G190ETN01.2 from AUO is a long-life supply 19" SXGA 1280 x 1024 TFT color LCD panel which comes with a 350cd/m LED backlight, 60Hz refresh rate, an extended operating temperature of -30°C to +85°C and a 30-pin, 2 channel, 8-bit LVDS connector.

Furthermore, Impulse can pair the G190ETN01.2 LCD panel any of our range of single board computers (SBC) as part of our LCD to board pairing service. We can re-program the BIOS on the board to support the LCD along with producing cabling to connect the display to the SBC whilst also supplying and fitting touch overlays and controllers for a fully kitted OEM solution.

For more information about the G190ETN01.2 TFT panel, our LCD to board pairing and Design to Order Services please contact our technical sales team on +44 (0)1782 337 800 or alternatively submit an enquiry.

Availability of a comprehensive range of industrial specification, wide aspect ratio 7.0-inch TFT display modules is announced by Review Display Systems.

These modules feature a 16:9 widescreen aspect ratio and are available in variety of resolutions including 800 x 480 pixels (WVGA), 1024 x 600 pixels (WSVGA), and 1280 x 800 pixels (WXGA).

Justin Coleman, display business manager, RDS said, “Over recent years, the widescreen 7.0-inch TFT display module has become an informal industry standard. At RDS we are able to supply, support and design-in a wide range of cost effective 7.0-inch TFT display modules with different options and value-added features. This concept provides engineers with the ability to enhance, upgrade and add new features to their products without the need to redesign their mechanical fixtures and fittings, or change the electronics driving the display.”

Screen: Should have no scratches, chips or scuff marks on glass. It will have NO dead pixels and the picture does not have "screen burn". The screen has a the correct level of contrast and brightness consistent with its age. The LCD Display will NOT have light or dark patches (bruising) which may affect the picture quality.

Item Description HP L1908W 19" 1440x900 16:10 LCD TFT Monitor VGA Grade A. This is a 19" LCD monitor. The resolution is 1440x900 with an aspect ratio of 16:10. Our technicians have tested every monitor to guarantee that they are fully functional.

This bar-type EVE TFT development kit includes everything to get started prototyping and building with the 480x128 accelerated display module. This development kit includes the bar-type display module with the accelerator board connected to an EVE Breakout Board connected to a Seeeduino loaded with demo code. Once you receive the development kit, all you need to do to get the demo kit running is check the connections and plug in the included USB cable.