Display Technology I Product News
Displays replace projectors
Rutronik's Michael Eger, Product Area Manager for Displays and Embedded Boards, looks at the latest displays that are now offering an attractive alternative to projectors and flip charts
S
harp is now looking to offer displays that have been designed to replace traditional projectors and flip charts in
sizes from 42“ up to 108“. Suitable for many conference and meeting rooms, the 70“ size is currently the only one available from this manufacturer on the market. Which format is the best, however, depends on the individual room conditions. With one exception, all Sharp business LCD monitors offer full HD image quality with 1920 x 1080 pixels. Most models display 1064 million colours and have a maximum brightness of 300-1500 cd/m2
, which
means that the image they produce is much sharper than that of a projector and small fonts are easy to read. Thanks to the wide viewing angle of 160° to 178°, images can be seen well from almost any position within the room. But it is when using the display instead of a projector, that the biggest advantage becomes clear - even in daylight they deliver a perfectly visible and clear image, so conference or meeting rooms no longer have to be darkened for presentations. In order to provide effective backlighting
and prevent the brightness being diminished, Sharp has developed its UV2A technology (ultraviolet-induced multi- domain vertical alignment). This photo- alignment technology enables liquid crystals in the LCD screen to be precisely and evenly aligned. It simultaneously reduces the power consumption of the display, which ranges from 195W to 395W depending on the model. The use of LEDs as backlight also contributes to this. There are also more good reasons why they are increasingly asserting themselves against CCFL. They include the low voltage power supply, short response times, a longer service life and RoHS conformity thanks to the lack of mercury.
Another important benefit for meetings and presentations is that thanks to their
10 September 2012
fanless design, the displays are very quiet and do not collect much dust. As the displays have been designed for 24/7 operation, they are not just for use as an alternative to projectors - they are also suitable for digital signage systems or video walls.
Present, edit, save, distribute Touch-screen LCD monitors are, however, not just for use as a presentation medium, but can also be used as an interactive tool in the form of a flip chart. The PN-L702B (70“) and PN-L602B (60“) models combine a high-quality LCD monitor with a highly sensitive touch-screen. Software enables documents or images to be displayed and enlarged, reduced or moved in the same way as on a smartphone. Using a finger or a special stylus, notes or drawings can be added directly to the touch-screen. These can also be turned or moved. A proprietary infrared detection system, where several sensors quickly and precisely determine the exact position of the finger or stylus, and a
Components in Electronics
minimal distance between the touch- screen and its LCD panel ensure a high level of responsiveness, enabling users to write and draw on it with accuracy. All elements on the screen can be saved and printed which enables the results of a meeting to be made immediately available to the participants as a handout or by e- mail as a file. As part of a video- conferencing system, the displays allow for the convenient, real-time exchange of information between two remote locations, giving the participants the feeling that they are actually there. These touch- screen monitors are suited for use as interactive digital signage applications, perhaps at trade fairs or roadshows, and for displaying passenger or visitor information. The narrow bezel models with an extra- thin frame of 5.4 mm are specially designed for video walls. When several displays are combined to form a wall, the zoom display mode automatically eliminates misalignment. Consequently,
despite the small gaps between the individual displays, one continuous image is displayed across all the screens. All displays are simple to install, either in landscape or portrait format. In contrast to conventional projectors, they do not offer a 4:3 format but the current 16:9 format. Despite weighing 70 kilograms, they can easily be suspended on a wall or placed on a wheeled stand so that they can be used in another room or at a trade fair. As a more inexpensive alternative,
Rutronik also carries LCD displays with or without the touch function from Chilin. They also have an excellent image quality but, unlike the Sharp models, they are not designed for 24/7 operation, only 20-hour operation. The manufacturer also offers open-frame models, i.e. frameless displays which can be used in an existing housing. These are primarily used for digital signage and industrial applications.
Sharp Electronics |
www.sharp.eu Rutronik |
www.rutronik.com
www.cieonline.co.uk
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