touch screen monitors ezvid wiki factory

Speaking of portable monitors, the G-Story GSV56FTis a moderately priced choice that should serve casual users well, while the XtendTouch XT1610Fis one of the few with an internal battery that"s actually worth mentioning.

There are a few different kinds of touch monitors and they all serve different purposes. Among those most similar to standard desktop displays, the Asus VT229His one of the newest, and its smaller sibling is just as good and measures 16 inches rather than 22. The Dell P2418HTis no slouch, either, with the kind of image quality that you"d expect from such a popular manufacturer. And the Acer T272HUL is one of the most noteworthy because not only does it measure an impressive 27 inches, it also sports a 1440p resolution, which is currently just about the best in the class. The Planar PCT2235 is reasonably priced and comes in a few sizes with a highly convenient dual-hinge stand or an optional Helium one. For that matter, if you like a fold-flat stand, check out the ViewSonic TD2760, which is pretty expensive but also looks fantastic -- it just doesn"t work with Apple products.

Then there are the compact, portable options, such as the Asus ZenScreen MB16AMT, which has an impressive amount of integrate technology. It takes advantage of the newest Type-C connector technology and looks surprisingly good for something so thin and light. The Gechic 1303I looks nearly as sharp, although it"s not as large, and the G-Story 15.6-Inch is an excellent value even if its image quality leaves a bit to be desired.

There are also a couple specialty items worth pointing out. The Angel Capacitive POS can serve you well in business settings, and if you need more like it, we"d suggest checking out Dell"s website (listed in our Special Honors section) for their Elo line of touch displays. The Eviciv MDS-702is also a somewhat specialized device, as while it does work with Windows, it"s a bit small for general usage, but it"s a perfect primary display for the Raspberry Pi.

The industry is taking its time with the new crop of HDMI 2.1 monitors, but in the meantime, there are plenty of great models from the last two years that are still at the front of the pack. That said, there was little movement this round and we"re confident in most of our previous picks. One important change was the addition of the Asus ROG Strix XG27UQ, one of the finest gaming monitors on the planet. We were also forced to remove an Asus ProArt model partly because its local dimming function turned out to be more of a gimmick than a useful feature. Instead, we recommend photo and video editors consider the tried-and-true Asus PA329C.

One of the benefits of the increased selection is much better deals on higher-quality monitors than were available in previous years. For everyday usage, it"s hard to beat the LG UL500in terms of price-to-performance ratio, while gamers on a moderate budget will appreciate the Acer CB282K. Our top pick, the Philips 328E1CA, is an especially capable choice that won"t hurt your wallet too badly, either.

Moving up somewhat in price, there are some good mid-range options that various enthusiasts will be interested in. The Asus ROG Strix XG438Qis practically in a league of its own as far as gaming monitors go, as it measures 43 inches and offers a variable refresh rate up to 120 hertz. It"s worth noting that this particular model generally gets better reviews than two similar options that succeeded it, and it also costs considerably less, making it an excellent choice for large-format gaming. Keep in mind, though, you will need a considerably powerful PC to take full advantage of it. The BenQ is another mid-level option that doesn"t disappoint, just like most options from this popular enthusiast brand.

If you"re willing to make a significant investment on something in the 32-inch size, It"s hard to argue with the technologically advanced Asus PA32UC, one of the extremely rare PC displays with local dimming, a practically essentially feature for effective HDR viewing. Professional photo and video editors will also like the BenQ SW321C, which is one of the most accurate and advanced monitors available right now.

We"re impressed with the wide range of features and excellent build quality of some of the latest monitors. Models like the Philip E Series, Acer ET322QK, and low-end LG UL27 offer incredible bang for the buck in small sizes, while the ViewSonic and the Philips Momentum mid-range are excellent 43-inch units that don"t cost an arm and a leg. Speaking of Philips, their Momentum display offers some of the best HDR performance around, and since it"s as large as a TV, is a great complement to a mid-size home theater setup. If you"re willing to spend a little more, the high-end LG 27UL and the Dell UltraSharp both offer an incredibly refined image.

For those who are okay with making a somewhat large investment, there are great options with a few different focuses. If you"re a photo or video editor, you"d be hard-pressed to find a better option than the BenQ. Its exceptional color accuracy and high-quality panel make it among the best professional options available. The Asus PG27UQ is a simply amazing piece of hardware, compete with some of the most cutting-edge technology around, but it"s also one of the most expensive monitors on the market. The Acer Predator is a bit more affordable, and boasts hardware almost exactly as advanced, though some users report inconsistent quality control. But if you"re looking for the all-around best, the LG UltraFine is incredibly hard to top. It boasts a useful and attractive 21:9 aspect ratio and one of the best pictures around, and while it"s pretty costly, many users find it worth the price.

In recent years, computer monitors have undergone a series of rapid improvements. Gone are the days of massive vacuum tube monitors that weighed dozens of pounds and offered limited image clarity. Today"s monitors boast sharp detail, amazing color fidelity, and are much slimmer and lighter weight than older models. Monitors have also become relatively affordable these days.

You can get a decent computer monitor measuring just under two feet in size (remember that screens are measured diagonally) without spending too much, but as sizes, resolutions, and the amount of advanced features increase, so, too, will the cost. Displays on the cutting edge can easily cost as much as your computer itself, or more.

When considering the right monitor for an office, gaming setup, or any other use, first think of the ideal size. You should never buy a monitor that is too large for the space it will occupy, whether this means a unit that will over crowd a desk or that will be too large for your easy viewing based on where you sit. Monitors between twenty four and thirty inches are the standard choice for most people.

A high refresh rate is another important factor that"s becoming ever more prevalent in modern displays. Sixty hertz has long been the standard for PC monitors, but ever since the industry moved away from CRTs, even that 60 hertz can sometimes look choppy. Having a monitor capable of refreshing 100, 120, 144, or more times per second can improve the overall visual experience, sure, but it really makes a difference when viewing sports and cartons as well as when playing video games. Advanced gaming monitors often feature adaptive refresh, which comes in a few flavors that all do the same thing: they actively match a monitor"s refresh rate to the frame rate of the game you"re playing, which reduces motion blur, prevents screen tearing and stuttering, and often minimizes input lag.

If you use your monitor for nothing more than basic word processing, browsing the web, sending emails, and other simple tasks, than your primary concerns when looking for a computer monitors should indeed be nothing more than a good price, decent image clarity, and a reliability rating that means rare replacement.

While not usually a concern for the mentor"s primary user, a wide viewing angle can help many people enjoy the content on the screen at the same time.

Most monitors don"t feature built in speakers, but those that do can save you money on additional audio hardware or else can be a part of a great surround sound system, helping to fill the room with sound. Look for monitors with stereo speakers if listening is nearly as important as viewing to you.

And finally consider the range of viewing angle a given monitor offers. While not usually a concern for the mentor"s primary user, a wide viewing angle can help many people enjoy the content on the screen at the same time. Look for monitors with that allow for clarity at more than 170 degrees of angle.

This last factor alone can have a radical impact on both acute and chronic comfort. Monitor placement can have an effect on everything from neck and shoulder comfort to lower back pain reduction (or exacerbation) and can impact eyestrain, fatigue, headaches, and more. A monitor should be set up at approximately arm"s length away from a person"s eyes, and with the user"s eyes level with the top of the screen when he or she is sitting upright. This allows for a comfortable, natural slight downward gaze. A slight tilt upward can make reading the entire surface of the monitor more comfortable, and a reduction in the brightness of the monitor (and the lighting conditions of the entire room) can allow for more relaxed reading and viewing.

Touch screen monitors included in this wiki include the uperfect portable, angel pos 17-inch, uperfect smart, asus vt229h, g-story gsv56ft, viewsonic td2455, viewsonic td1655, dell p2418ht, xtendtouch xt1610f, and eviciv mds-702.

The positive reviews keep rolling in!  Emporia Energy very much appreciates topping the list of the EZVid wiki for 10 Best Electric Usage Monitors for residential energy use.  Three of those devices boast whole-home electricity monitoring similar to that of the Vue: the offerings from Eyedro, Sense, and of course Emporia.

Emporia has previously created its own comparison table for these devices.  And clearly agrees with the EZVid top value ranking.  However, it is our goal to present the best option for consumers -- regardless of cost!  So with that in mind, let"s consider a few points.

We have also sought to build a platform that allows flexibility for additional hardware configurations, devices, and user types.  For example, on our shop we sell several different types of sensors to allow for installation in as many homes as possible.  We also will soon offer a device to receive data directly from certain "smart" meters.  Finally, unlike other platforms, our platform allows customers to access data from multiple monitors -- all under a single account.

With the above in mind, readers should appreciate that Emporia ultimately strives to be the first choice for energy consumers -- regardless of cost.  And in this spirit we are proud to be acknowledged by EZVid wiki!

A touchscreen or touch screen is the assembly of both an input ("touch panel") and output ("display") device. The touch panel is normally layered on the top of an electronic visual display of an information processing system. The display is often an LCD, AMOLED or OLED display while the system is usually used in a laptop, tablet, or smartphone. A user can give input or control the information processing system through simple or multi-touch gestures by touching the screen with a special stylus or one or more fingers.zooming to increase the text size.

The touchscreen enables the user to interact directly with what is displayed, rather than using a mouse, touchpad, or other such devices (other than a stylus, which is optional for most modern touchscreens).

Touchscreens are common in devices such as game consoles, personal computers, electronic voting machines, and point-of-sale (POS) systems. They can also be attached to computers or, as terminals, to networks. They play a prominent role in the design of digital appliances such as personal digital assistants (PDAs) and some e-readers. Touchscreens are also important in educational settings such as classrooms or on college campuses.

The popularity of smartphones, tablets, and many types of information appliances is driving the demand and acceptance of common touchscreens for portable and functional electronics. Touchscreens are found in the medical field, heavy industry, automated teller machines (ATMs), and kiosks such as museum displays or room automation, where keyboard and mouse systems do not allow a suitably intuitive, rapid, or accurate interaction by the user with the display"s content.

Historically, the touchscreen sensor and its accompanying controller-based firmware have been made available by a wide array of after-market system integrators, and not by display, chip, or motherboard manufacturers. Display manufacturers and chip manufacturers have acknowledged the trend toward acceptance of touchscreens as a user interface component and have begun to integrate touchscreens into the fundamental design of their products.

The prototypeCERNFrank Beck, a British electronics engineer, for the control room of CERN"s accelerator SPS (Super Proton Synchrotron). This was a further development of the self-capacitance screen (right), also developed by Stumpe at CERN

One predecessor of the modern touch screen includes stylus based systems. In 1946, a patent was filed by Philco Company for a stylus designed for sports telecasting which, when placed against an intermediate cathode ray tube display (CRT) would amplify and add to the original signal. Effectively, this was used for temporarily drawing arrows or circles onto a live television broadcast, as described in US 2487641A, Denk, William E, "Electronic pointer for television images", issued 1949-11-08. Later inventions built upon this system to free telewriting styli from their mechanical bindings. By transcribing what a user draws onto a computer, it could be saved for future use. See US 3089918A, Graham, Robert E, "Telewriting apparatus", issued 1963-05-14.

The first version of a touchscreen which operated independently of the light produced from the screen was patented by AT&T Corporation US 3016421A, Harmon, Leon D, "Electrographic transmitter", issued 1962-01-09. This touchscreen utilized a matrix of collimated lights shining orthogonally across the touch surface. When a beam is interrupted by a stylus, the photodetectors which no longer are receiving a signal can be used to determine where the interruption is. Later iterations of matrix based touchscreens built upon this by adding more emitters and detectors to improve resolution, pulsing emitters to improve optical signal to noise ratio, and a nonorthogonal matrix to remove shadow readings when using multi-touch.

The first finger driven touch screen was developed by Eric Johnson, of the Royal Radar Establishment located in Malvern, England, who described his work on capacitive touchscreens in a short article published in 1965Frank Beck and Bent Stumpe, engineers from CERN (European Organization for Nuclear Research), developed a transparent touchscreen in the early 1970s,In the mid-1960s, another precursor of touchscreens, an ultrasonic-curtain-based pointing device in front of a terminal display, had been developed by a team around Rainer Mallebrein[de] at Telefunken Konstanz for an air traffic control system.Einrichtung" ("touch input facility") for the SIG 50 terminal utilizing a conductively coated glass screen in front of the display.

In 1972, a group at the University of Illinois filed for a patent on an optical touchscreenMagnavox Plato IV Student Terminal and thousands were built for this purpose. These touchscreens had a crossed array of 16×16 infrared position sensors, each composed of an LED on one edge of the screen and a matched phototransistor on the other edge, all mounted in front of a monochrome plasma display panel. This arrangement could sense any fingertip-sized opaque object in close proximity to the screen. A similar touchscreen was used on the HP-150 starting in 1983. The HP 150 was one of the world"s earliest commercial touchscreen computers.infrared transmitters and receivers around the bezel of a 9-inch Sony cathode ray tube (CRT).

In 1977, an American company, Elographics – in partnership with Siemens – began work on developing a transparent implementation of an existing opaque touchpad technology, U.S. patent No. 3,911,215, October 7, 1975, which had been developed by Elographics" founder George Samuel Hurst.World"s Fair at Knoxville in 1982.

In 1984, Fujitsu released a touch pad for the Micro 16 to accommodate the complexity of kanji characters, which were stored as tiled graphics.Sega released the Terebi Oekaki, also known as the Sega Graphic Board, for the SG-1000 video game console and SC-3000 home computer. It consisted of a plastic pen and a plastic board with a transparent window where pen presses are detected. It was used primarily with a drawing software application.

Touch-sensitive control-display units (CDUs) were evaluated for commercial aircraft flight decks in the early 1980s. Initial research showed that a touch interface would reduce pilot workload as the crew could then select waypoints, functions and actions, rather than be "head down" typing latitudes, longitudes, and waypoint codes on a keyboard. An effective integration of this technology was aimed at helping flight crews maintain a high level of situational awareness of all major aspects of the vehicle operations including the flight path, the functioning of various aircraft systems, and moment-to-moment human interactions.

In the early 1980s, General Motors tasked its Delco Electronics division with a project aimed at replacing an automobile"s non-essential functions (i.e. other than throttle, transmission, braking, and steering) from mechanical or electro-mechanical systems with solid state alternatives wherever possible. The finished device was dubbed the ECC for "Electronic Control Center", a digital computer and software control system hardwired to various peripheral sensors, servos, solenoids, antenna and a monochrome CRT touchscreen that functioned both as display and sole method of input.stereo, fan, heater and air conditioner controls and displays, and was capable of providing very detailed and specific information about the vehicle"s cumulative and current operating status in real time. The ECC was standard equipment on the 1985–1989 Buick Riviera and later the 1988–1989 Buick Reatta, but was unpopular with consumers—partly due to the technophobia of some traditional Buick customers, but mostly because of costly technical problems suffered by the ECC"s touchscreen which would render climate control or stereo operation impossible.

Multi-touch technology began in 1982, when the University of Toronto"s Input Research Group developed the first human-input multi-touch system, using a frosted-glass panel with a camera placed behind the glass. In 1985, the University of Toronto group, including Bill Buxton, developed a multi-touch tablet that used capacitance rather than bulky camera-based optical sensing systems (see History of multi-touch).

The first commercially available graphical point-of-sale (POS) software was demonstrated on the 16-bit Atari 520ST color computer. It featured a color touchscreen widget-driven interface.COMDEX expo in 1986.

In 1987, Casio launched the Casio PB-1000 pocket computer with a touchscreen consisting of a 4×4 matrix, resulting in 16 touch areas in its small LCD graphic screen.

Touchscreens had a bad reputation of being imprecise until 1988. Most user-interface books would state that touchscreen selections were limited to targets larger than the average finger. At the time, selections were done in such a way that a target was selected as soon as the finger came over it, and the corresponding action was performed immediately. Errors were common, due to parallax or calibration problems, leading to user frustration. "Lift-off strategy"University of Maryland Human–Computer Interaction Lab (HCIL). As users touch the screen, feedback is provided as to what will be selected: users can adjust the position of the finger, and the action takes place only when the finger is lifted off the screen. This allowed the selection of small targets, down to a single pixel on a 640×480 Video Graphics Array (VGA) screen (a standard of that time).

Sears et al. (1990)human–computer interaction of the time, describing gestures such as rotating knobs, adjusting sliders, and swiping the screen to activate a switch (or a U-shaped gesture for a toggle switch). The HCIL team developed and studied small touchscreen keyboards (including a study that showed users could type at 25 wpm on a touchscreen keyboard), aiding their introduction on mobile devices. They also designed and implemented multi-touch gestures such as selecting a range of a line, connecting objects, and a "tap-click" gesture to select while maintaining location with another finger.

In 1990, HCIL demonstrated a touchscreen slider,lock screen patent litigation between Apple and other touchscreen mobile phone vendors (in relation to

An early attempt at a handheld game console with touchscreen controls was Sega"s intended successor to the Game Gear, though the device was ultimately shelved and never released due to the expensive cost of touchscreen technology in the early 1990s.

Touchscreens would not be popularly used for video games until the release of the Nintendo DS in 2004.Apple Watch being released with a force-sensitive display in April 2015.

In 2007, 93% of touchscreens shipped were resistive and only 4% were projected capacitance. In 2013, 3% of touchscreens shipped were resistive and 90% were projected capacitance.

A resistive touchscreen panel comprises several thin layers, the most important of which are two transparent electrically resistive layers facing each other with a thin gap between. The top layer (that which is touched) has a coating on the underside surface; just beneath it is a similar resistive layer on top of its substrate. One layer has conductive connections along its sides, the other along top and bottom. A voltage is applied to one layer and sensed by the other. When an object, such as a fingertip or stylus tip, presses down onto the outer surface, the two layers touch to become connected at that point.voltage dividers, one axis at a time. By rapidly switching between each layer, the position of pressure on the screen can be detected.

Resistive touch is used in restaurants, factories and hospitals due to its high tolerance for liquids and contaminants. A major benefit of resistive-touch technology is its low cost. Additionally, as only sufficient pressure is necessary for the touch to be sensed, they may be used with gloves on, or by using anything rigid as a finger substitute. Disadvantages include the need to press down, and a risk of damage by sharp objects. Resistive touchscreens also suffer from poorer contrast, due to having additional reflections (i.e. glare) from the layers of material placed over the screen.3DS family, and the Wii U GamePad.

Surface acoustic wave (SAW) technology uses ultrasonic waves that pass over the touchscreen panel. When the panel is touched, a portion of the wave is absorbed. The change in ultrasonic waves is processed by the controller to determine the position of the touch event. Surface acoustic wave touchscreen panels can be damaged by outside elements. Contaminants on the surface can also interfere with the functionality of the touchscreen.

The Casio TC500 Capacitive touch sensor watch from 1983, with angled light exposing the touch sensor pads and traces etched onto the top watch glass surface.

A capacitive touchscreen panel consists of an insulator, such as glass, coated with a transparent conductor, such as indium tin oxide (ITO).electrostatic field, measurable as a change in capacitance. Different technologies may be used to determine the location of the touch. The location is then sent to the controller for processing. Touchscreens that use silver instead of ITO exist, as ITO causes several environmental problems due to the use of indium.complementary metal–oxide–semiconductor (CMOS) application-specific integrated circuit (ASIC) chip, which in turn usually sends the signals to a CMOS digital signal processor (DSP) for processing.

Unlike a resistive touchscreen, some capacitive touchscreens cannot be used to detect a finger through electrically insulating material, such as gloves. This disadvantage especially affects usability in consumer electronics, such as touch tablet PCs and capacitive smartphones in cold weather when people may be wearing gloves. It can be overcome with a special capacitive stylus, or a special-application glove with an embroidered patch of conductive thread allowing electrical contact with the user"s fingertip.

A low-quality switching-mode power supply unit with an accordingly unstable, noisy voltage may temporarily interfere with the precision, accuracy and sensitivity of capacitive touch screens.

Some capacitive display manufacturers continue to develop thinner and more accurate touchscreens. Those for mobile devices are now being produced with "in-cell" technology, such as in Samsung"s Super AMOLED screens, that eliminates a layer by building the capacitors inside the display itself. This type of touchscreen reduces the visible distance between the user"s finger and what the user is touching on the screen, reducing the thickness and weight of the display, which is desirable in smartphones.

In this basic technology, only one side of the insulator is coated with a conductive layer. A small voltage is applied to the layer, resulting in a uniform electrostatic field. When a conductor, such as a human finger, touches the uncoated surface, a capacitor is dynamically formed. The sensor"s controller can determine the location of the touch indirectly from the change in the capacitance as measured from the four corners of the panel. As it has no moving parts, it is moderately durable but has limited resolution, is prone to false signals from parasitic capacitive coupling, and needs calibration during manufacture. It is therefore most often used in simple applications such as industrial controls and kiosks.

This diagram shows how eight inputs to a lattice touchscreen or keypad creates 28 unique intersections, as opposed to 16 intersections created using a standard x/y multiplexed touchscreen .

Projected capacitive touch (PCT; also PCAP) technology is a variant of capacitive touch technology but where sensitivity to touch, accuracy, resolution and speed of touch have been greatly improved by the use of a simple form of

Some modern PCT touch screens are composed of thousands of discrete keys,etching a single conductive layer to form a grid pattern of electrodes, by etching two separate, perpendicular layers of conductive material with parallel lines or tracks to form a grid, or by forming an x/y grid of fine, insulation coated wires in a single layer . The number of fingers that can be detected simultaneously is determined by the number of cross-over points (x * y) . However, the number of cross-over points can be almost doubled by using a diagonal lattice layout, where, instead of x elements only ever crossing y elements, each conductive element crosses every other element .

In some designs, voltage applied to this grid creates a uniform electrostatic field, which can be measured. When a conductive object, such as a finger, comes into contact with a PCT panel, it distorts the local electrostatic field at that point. This is measurable as a change in capacitance. If a finger bridges the gap between two of the "tracks", the charge field is further interrupted and detected by the controller. The capacitance can be changed and measured at every individual point on the grid. This system is able to accurately track touches.

Unlike traditional capacitive touch technology, it is possible for a PCT system to sense a passive stylus or gloved finger. However, moisture on the surface of the panel, high humidity, or collected dust can interfere with performance.

These environmental factors, however, are not a problem with "fine wire" based touchscreens due to the fact that wire based touchscreens have a much lower "parasitic" capacitance, and there is greater distance between neighbouring conductors.

This is a common PCT approach, which makes use of the fact that most conductive objects are able to hold a charge if they are very close together. In mutual capacitive sensors, a capacitor is inherently formed by the row trace and column trace at each intersection of the grid. A 16×14 array, for example, would have 224 independent capacitors. A voltage is applied to the rows or columns. Bringing a finger or conductive stylus close to the surface of the sensor changes the local electrostatic field, which in turn reduces the mutual capacitance. The capacitance change at every individual point on the grid can be measured to accurately determine the touch location by measuring the voltage in the other axis. Mutual capacitance allows multi-touch operation where multiple fingers, palms or styli can be accurately tracked at the same time.

Self-capacitive touch screen layers are used on mobile phones such as the Sony Xperia Sola,Samsung Galaxy S4, Galaxy Note 3, Galaxy S5, and Galaxy Alpha.

Self capacitance is far more sensitive than mutual capacitance and is mainly used for single touch, simple gesturing and proximity sensing where the finger does not even have to touch the glass surface.

Capacitive touchscreens do not necessarily need to be operated by a finger, but until recently the special styli required could be quite expensive to purchase. The cost of this technology has fallen greatly in recent years and capacitive styli are now widely available for a nominal charge, and often given away free with mobile accessories. These consist of an electrically conductive shaft with a soft conductive rubber tip, thereby resistively connecting the fingers to the tip of the stylus.

Infrared sensors mounted around the display watch for a user"s touchscreen input on this PLATO V terminal in 1981. The monochromatic plasma display"s characteristic orange glow is illustrated.

An infrared touchscreen uses an array of X-Y infrared LED and photodetector pairs around the edges of the screen to detect a disruption in the pattern of LED beams. These LED beams cross each other in vertical and horizontal patterns. This helps the sensors pick up the exact location of the touch. A major benefit of such a system is that it can detect essentially any opaque object including a finger, gloved finger, stylus or pen. It is generally used in outdoor applications and POS systems that cannot rely on a conductor (such as a bare finger) to activate the touchscreen. Unlike capacitive touchscreens, infrared touchscreens do not require any patterning on the glass which increases durability and optical clarity of the overall system. Infrared touchscreens are sensitive to dirt and dust that can interfere with the infrared beams, and suffer from parallax in curved surfaces and accidental press when the user hovers a finger over the screen while searching for the item to be selected.

A translucent acrylic sheet is used as a rear-projection screen to display information. The edges of the acrylic sheet are illuminated by infrared LEDs, and infrared cameras are focused on the back of the sheet. Objects placed on the sheet are detectable by the cameras. When the sheet is touched by the user, frustrated total internal reflection results in leakage of infrared light which peaks at the points of maximum pressure, indicating the user"s touch location. Microsoft"s PixelSense tablets use this technology.

Optical touchscreens are a relatively modern development in touchscreen technology, in which two or more image sensors (such as CMOS sensors) are placed around the edges (mostly the corners) of the screen. Infrared backlights are placed in the sensor"s field of view on the opposite side of the screen. A touch blocks some lights from the sensors, and the location and size of the touching object can be calculated (see visual hull). This technology is growing in popularity due to its scalability, versatility, and affordability for larger touchscreens.

Introduced in 2002 by 3M, this system detects a touch by using sensors to measure the piezoelectricity in the glass. Complex algorithms interpret this information and provide the actual location of the touch.

The key to this technology is that a touch at any one position on the surface generates a sound wave in the substrate which then produces a unique combined signal as measured by three or more tiny transducers attached to the edges of the touchscreen. The digitized signal is compared to a list corresponding to every position on the surface, determining the touch location. A moving touch is tracked by rapid repetition of this process. Extraneous and ambient sounds are ignored since they do not match any stored sound profile. The technology differs from other sound-based technologies by using a simple look-up method rather than expensive signal-processing hardware. As with the dispersive signal technology system, a motionless finger cannot be detected after the initial touch. However, for the same reason, the touch recognition is not disrupted by any resting objects. The technology was created by SoundTouch Ltd in the early 2000s, as described by the patent family EP1852772, and introduced to the market by Tyco International"s Elo division in 2006 as Acoustic Pulse Recognition.

There are several principal ways to build a touchscreen. The key goals are to recognize one or more fingers touching a display, to interpret the command that this represents, and to communicate the command to the appropriate application.

Dispersive-signal technology measures the piezoelectric effect—the voltage generated when mechanical force is applied to a material—that occurs chemically when a strengthened glass substrate is touched.

There are two infrared-based approaches. In one, an array of sensors detects a finger touching or almost touching the display, thereby interrupting infrared light beams projected over the screen. In the other, bottom-mounted infrared cameras record heat from screen touches.

The development of multi-touch screens facilitated the tracking of more than one finger on the screen; thus, operations that require more than one finger are possible. These devices also allow multiple users to interact with the touchscreen simultaneously.

With the growing use of touchscreens, the cost of touchscreen technology is routinely absorbed into the products that incorporate it and is nearly eliminated. Touchscreen technology has demonstrated reliability and is found in airplanes, automobiles, gaming consoles, machine control systems, appliances, and handheld display devices including cellphones; the touchscreen market for mobile devices was projected to produce US$5 billion by 2009.

The ability to accurately point on the screen itself is also advancing with the emerging graphics tablet-screen hybrids. Polyvinylidene fluoride (PVDF) plays a major role in this innovation due its high piezoelectric properties, which allow the tablet to sense pressure, making such things as digital painting behave more like paper and pencil.

TapSense, announced in October 2011, allows touchscreens to distinguish what part of the hand was used for input, such as the fingertip, knuckle and fingernail. This could be used in a variety of ways, for example, to copy and paste, to capitalize letters, to activate different drawing modes, etc.

For touchscreens to be effective input devices, users must be able to accurately select targets and avoid accidental selection of adjacent targets. The design of touchscreen interfaces should reflect technical capabilities of the system, ergonomics, cognitive psychology and human physiology.

Guidelines for touchscreen designs were first developed in the 2000s, based on early research and actual use of older systems, typically using infrared grids—which were highly dependent on the size of the user"s fingers. These guidelines are less relevant for the bulk of modern touch devices which use capacitive or resistive touch technology.

Much more important is the accuracy humans have in selecting targets with their finger or a pen stylus. The accuracy of user selection varies by position on the screen: users are most accurate at the center, less so at the left and right edges, and least accurate at the top edge and especially the bottom edge. The R95 accuracy (required radius for 95% target accuracy) varies from 7 mm (0.28 in) in the center to 12 mm (0.47 in) in the lower corners.

This user inaccuracy is a result of parallax, visual acuity and the speed of the feedback loop between the eyes and fingers. The precision of the human finger alone is much, much higher than this, so when assistive technologies are provided—such as on-screen magnifiers—users can move their finger (once in contact with the screen) with precision as small as 0.1 mm (0.004 in).

Users of handheld and portable touchscreen devices hold them in a variety of ways, and routinely change their method of holding and selection to suit the position and type of input. There are four basic types of handheld interaction:

Touchscreens are often used with haptic response systems. A common example of this technology is the vibratory feedback provided when a button on the touchscreen is tapped. Haptics are used to improve the user"s experience with touchscreens by providing simulated tactile feedback, and can be designed to react immediately, partly countering on-screen response latency. Research from the University of Glasgow (Brewster, Chohan, and Brown, 2007; and more recently Hogan) demonstrates that touchscreen users reduce input errors (by 20%), increase input speed (by 20%), and lower their cognitive load (by 40%) when touchscreens are combined with haptics or tactile feedback. On top of this, a study conducted in 2013 by Boston College explored the effects that touchscreens haptic stimulation had on triggering psychological ownership of a product. Their research concluded that a touchscreens ability to incorporate high amounts of haptic involvement resulted in customers feeling more endowment to the products they were designing or buying. The study also reported that consumers using a touchscreen were willing to accept a higher price point for the items they were purchasing.

Unsupported touchscreens are still fairly common in applications such as ATMs and data kiosks, but are not an issue as the typical user only engages for brief and widely spaced periods.

Touchscreens can suffer from the problem of fingerprints on the display. This can be mitigated by the use of materials with optical coatings designed to reduce the visible effects of fingerprint oils. Most modern smartphones have oleophobic coatings, which lessen the amount of oil residue. Another option is to install a matte-finish anti-glare screen protector, which creates a slightly roughened surface that does not easily retain smudges.

Touchscreens do not work most of the time when the user wears gloves. The thickness of the glove and the material they are made of play a significant role on that and the ability of a touchscreen to pick up a touch.

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One of the things that sets us apart from other touchscreen display manufacturers is the level of customization we offer. Our product portfolio includes a wide range of TFT & Monochrome LCDs, OLED, touch sensor and glass technologies, which we can provide stand-alone or integrated into complete assemblies.

Our custom display, touch and cover lens solutions are used in a variety of end-user applications. For example, our touchscreens are used in many vehicle infotainment systems and dashboard controls. We also provide custom touch displays for popular marine applications such as watercraft navigation screens and fish finders. For consumer electronics, we manufacture custom touchscreen display solutions and smartphone screen protectors. Whether your application will be used in the great outdoors, a construction site, or a hospital operating room, we can build a custom, all-in-one solution for your needs.

Our strength as a custom display company comes from the extensive technical expertise of our engineering team. The approach our engineers take is always based on experience and data-driven decisions that help you find the right solution for your application. In addition, our extensive manufacturing capabilities enable us to deliver quick design cycles, cost-effective solutions, and high-quality products that will meet your specifications even in the harshest conditions. To learn more about what makes us the display manufacturer for your needs, get in touch with us today.

We know touch - it"s our only business. In fact, we invented the touchscreen over 50 years ago and haven"t stopped since. Every 21 seconds, a new Elo touch screen is installed somewhere in the world. We obsess over details to exceed the highest quality standards.

Our product portfolio includes a broad selection of interactive touchscreen displays from 7-65 inches, all-in-one touchscreen computers, OEM touchscreens and touchscreen controllers and touchscreen monitors. You’ve used our product or been helped by an Elo touchscreen in gaming machines, interactive kiosks, hospitality systems, point-of-sale terminals, wayfinder displays, interactive retail displays and transportation applications just to name a few!

We are large enough to be global, yet focused enough to deliver personalized support. We live by the philosophy "There is nothing more important than our customers." Our goal is to help you do your job better, spend less time doing it and become your favorite touchscreen supplier by delivering on our promises. We measure our success based on your satisfaction. We want you to be an Elo customer for life.

Our industrial display touch screen monitors can help your factory personnel and workshops handle complex industrial tasks on intuitive factory grade touch screens. Our wide range of rugged LCD displays with multi-touch and various touch technologies such as resisitive, SAW, optical imaging, projected capacitive and infrared are tough and suitable for virtually any industrial applications. We can help you choose the best touch screen technology and solution that fits best with your needs, and close the gap between your vision and implementation of the digital factory.

Viewsonic"s Touch Screen Solutions helped us simplify the hassle of operating complex machinery in our factory. It really helped us improve our factory line operations and reduced labor input.”