Edge Lit And Direct Lit Backlight Configurations

All LEDs are simply LCDs with LED backlights. These backlights provide illumination so images can be created on the LCD.

Previously, cold-cathode florescent lamps (CCFL) backlights were used, but most manufacturers have completely switched to LEDs now. The latter are more energy efficient and almost as affordable as CCFL LCDs.

Multiple arrangements are possible using LED backlights, and these arrangements may have a dramatic effect on the quality of image created. Most of the LCD models available in the market today are either edge lit or direct lit LEDs.

Edge lit LCDs

In this arrangement, LEDs are used as a row of light emitters along one or more edges, with reflective films and coatings funneling their light across the back of the LCD panel. This way, a uniform pattern is achieved.

LEDs typically used are white ones. Each manufacturer has their own preferred method of edge lit backlighting; however, different models from the same manufacturer may use different methods.

Typically, fewer LEDs will result in a less costly screen. It will also make them more energy efficient. Since, LED LCDs are already highly efficient, using fewer LEDs makes little difference.

Advantages

· It creates an overall thin display. LCD panels that are very thin most likely have LED backlighting.

· It costs considerably less since fewer LEDs are used to cover a larger display area.

Direct lit LCDs

Direct lit configurations have LEDs placed behind the LCD display instead of the edges. There are many ways in which this can be done. Most common implementation is to use arrays of LEDs in zones. Each zone can be independently controlled based on the content.

Advantages

· Much better brightness uniformity achieved through ‘zones’ of LEDs.

· Local dimming can be applied to achieve higher contrast while reducing power consumption. Backlights are turned down in a zone where the content is dark and turned up where it’s bright. Depending on the content, the LCD display can be lower power or higher depending on the brightness of the content.

· There are no size limitations; it can be used easily for very large displays.

The best LCDs in the market are ones that use the right configuration for the display size and intended application. You can find both LED and CCFL LCDs with REVO Interactive, well-known supplier of industrial LCD panels.

Their LCD panels and kits are available in various sizes and resolutions, including sunlight readable and panoramic LCD panels. Contact them today for orders and further information.

Are Resistive Touch Panels Better For Certain Applications?

Take a look around you; virtually every device now has touchscreen displays¾from consumer electronics like mobile phones and tablets to large panoramic displays used for commercial applications.

This ubiquitous adoption of touch-enabled screens has resulted in pricing and designing challenges. Several OEMs are looking for options to help drive down the costs, so as to maintain competitive pricing for the end-user.

During this process, the advantages of PCAP touch-screens were discovered. PCAP panels have enabled us to improve durability, reliability and performance of the touchscreen.

However, there are some situations where PCPA may not be the ideal technology. In these cases, our old tried and trusted resistive touch panels are preferred.

• Cost is one of the major problems. Screen size, ruggedness, unit volume and other factors impact the overall cost of a display. It’s difficult to compare the overall cost for PCAP and resistive touch solutions.
• Simply put, a PCAP sensor and controller combined costs a lot more than a resistive sensor and controller. Resistive touch is a better option if cost is a major consideration, unless PCAP features are absolutely necessary.
• Volume can impact the overall cost per unit. ITO sensors are custom designed and unique algorithm is required for tuning of PCAP controllers.
• For consumer electronics, the cost is driven down because of high production volumes. In contrast, lower volumes of industrial applications may make the costs prohibitive.
• Again, simplicity of resistive designs can be an advantage.  
•  Gloved operation isn’t feasible with PCPA panels. Some medical and industrial applications require use of rubber or leather gloves which can affect the capacitance of the touch. Most often touch function won’t work on PCAP screens. Yet, gloves have no influence whatsoever on resistive screen.
• Impact resistance requires use of a 1–2mm glass overlay, in order to protect the LCD panel and the ITO controller. For industrial and commercial applications, much higher resistance is required. They use thick 4–5 mm glass that can impact a sensor’s capacitance. Resistive panels are less sensitive, and in some cases, preferable for heavy-duty applications.
• Liquids can alter the capacitance experienced by the sensor. Industrial applications require both water rejection (rejecting false touches if liquid is present on screen) and wet finger tracking (accurately tracking the touch in presence of liquid) are necessary. This can add extra cost.

While resistive touch may be a better option in technical terms for the above-listed applications, we can’t ignore the fact that PCAP panels are more efficient. Ultimately, your decision depends on factors such as cost and quality of display.

In most cases, the end-application will help you decide between resistive and PCAP LCD touchscreen display panels. Irrespective of the technology, you can find a number of industrial LCD panels at REVO Interactive.

Browse their products today and contact them for pricing here.

Commercial Displays Lead The Industries Into The Age Of Digital Signage!

 

The business market has seen a surge in commercial display demands for digital signage purposes.

The market share for digital signage is predicted to reach $27.34 billion by 2022, according to Markets and Markets report. It was initially valued at USD 16.88 billion in 2015.

Look around you—several retailers, hotels, airports and other commercial facilities are utilizing digital signage for multiple uses.

These large display monitors can be used for venue maps, infotainment, ETAs and other interactive solutions, allowing businesses to interact with customers.

No wonder that the Original Equipment Manufacturers (OEMs) are looking to increase their profits by offering optimized display solutions. While more companies are looking for commercial displays, not just any of them work. Instead, they opt for the ones that offer the most effective cost-benefit ratio.

Bow the question arises: how are commercial displays beating consumer models for industrial applications?

Now, more than ever, OEMs are acknowledging the cost benefits of commercial displays. They are in a good position to explain how the overall costs for digital signage tilt in favor of commercial displays.

A number of features make these displays less expensive:

Commercial displays have a rugged construction that makes them ideal for public spaces and high traffic applications, including hotel lobbies, conference rooms, retail stores, healthcare facilities and numerous event venues. Their slim and sleek design makes them suitable for business environments too.

Another benefit is that these displays are more reliable than consumer grade solutions. These are manufactured for higher performance efficiency, running for hours at end. Most are efficient even when used 24/7. They have better cooling technology and can repeatedly run the same images without image retention or burn-in troubles.

Consumer display panels have lower brightness which can wash out images in high ambient light (such as direct sunlight) conditions. In contrast, commercial displays with sunlight readable panels are available to make outdoor viewing easier. Compared to consumer displays, high brightness solutions are offered by these commercial displays.

Commercial displays often come with better warranties and technological support. This helps OEMs as well, assisting them with easy integration by various means.

Stretched LCD panels are one of the most widely used commercial displays in digital signage industry. REVO Interactive offers raw LCD panels for OEMs, along with optional LCD controllers for better embedding into systems. They also provide sunlight readable LCD kits, ideal for ambient light environments.

If you’re an original manufacturer interested in quality commercial display solutions, get in touch with REVO Interactive. Call them today at 1-866-738-6797 for more information.

Speed and Simplification: Multi-Touch Screen Kiosks

Multi-touch screens enable multiple touches of fingers on the interface of a kiosk. And this provides the user with better speed and simplicity. In addition, this unique feature allows for supplementary features such as quick scrolling, intuitive gesturing, pinch-to-zoom, and more. Consequently, the user enjoys swift, interactive, and spontaneous interaction with the screen.

The ultimate purpose of multi-touch kiosks is to improve the overall user experience. It leads to a more informed, interesting and efficient transaction. The most critical benefit of multi-touch screen kiosks is that it dramatically increases sales, and improves user experience incredibly.

Outlined below are some interesting benefits of multi-touch screen kiosks:

Interaction Is Simpler With Gesturing

Dissimilar to the limited interfaces that were a gift from the previous generation of touch screen technology, modern touch screen systems depend on the gestures of users. Why? Simply to do away with the need of large-sized buttons and muddled user interfaces. With multi-touch displays, users can instinctively move across dynamic content and get done with their transactions.

The latest projected capacitive technology, commonly found in the leading multi-touch kiosks, permits users to interact in the same manner as with their smart phones; which means that users can easily swipe across the interface to scroll, turn pages, etc. In fact, users can also ‘pinch’ elements on the interface to zoom or maximize a certain option, item, or image. This unique ability releases the user from the common interface clutter such as scroll bars, zoom icons, etc.

Cleaner, More Durable Surfaces

The contemporary multi-touch kiosks provide users with smooth and clean surfaces. Contrary to the older versions of touch screen kiosks that were enclosed with a bezel that used to trap dust particles and food debris, modern multi-touch kiosks are more resilient, clean, and easy to maintain. These multi-touch kiosks can be fitted into walls and countertops. Moreover, they have a flush-mounting feature that simplifies cleaning. And when we say they’re durable, we mean that they can withstand even the harshest conditions.

The best feature of these kiosks is that several screens can be installed in a group. In retail conditions, multi-touch kiosks provide a richer presentation via an interactive video. Increased amount of content can be showcased on a single screen, without bezel to disrupt the visual continuity.

Assists Multi-User Interaction

By the very nature of this display solution, multiple users can make contact and interact with the host organization via a single screen. As a result, every kiosk is able to support various independent, interactive areas of the screen. Consequently, users are provided with countless opportunities of interesting game and way-finding apps.  

Multi-touch screen kiosks save time, effort and money for organizations that deploy this amazing technology. Find a comprehensive range of multi-touch LCD monitors, sunlight readable touch screens, industrial display monitors, and lots more on sale at REVO Interactive.