Screenless
displays convey visual information without using screen or projector. This
technology is emerging in the field of computer-enhanced technologies. Numerous
manufacturers are endeavoring to obtain patents for their technologies
regarding screenless displays. Technological developments and reduced overall
costs of screenless display devices would present new opportunities.
Screenless Display Techniques:
There are
three screenless display techniques:
Visual Image:
Any image that an eye can
perceive is included in visual image screenless display. In this technique,
light reflects from an intermediate object before it reaches to retina. Virtual
reality goggles and heads-up displays are examples of visual image screenless
display. Moreover, hologram is the most common example of application of visual
image technique. Holograms are transmitted directly or stored in devices, such
as holodiscs. A holoprojector is used to access stored images in holodiscs.
Google is researching to develop a visual image system that would replace
screens in smartphones and tablets.
Images are projected directly on
retina in retinal display technique. The usage of an intermediate device for
reflection is the only differentiation between visual image and retinal display
techniques. Extreme privacy needs to be maintained once the computing work is
done in public places. Retinal display systems project light only on retina of
intended viewer in public places.
3.
Synaptic
Interface:
Synaptic interface technique
transmits visual information directly to brain without using light. To develop
this technique, sampled video signals from horse crab eyes through their optic
nerves are used along with sampled video signals from the electronic cameras
into the brains of creatures. The results were successful in creatures as well
as humans. Most of the companies are using this technique for communication, business,
and security purposes. This technique is also known as human machine interface,
mind machine interface, and direct neural interface.
Applications:
- · Screenless display techniques are used in manufacturing mobile phones for visually impaired or old people.
- · Development of screenless laptops would be an eco-friendly solution to increasing landfills with CRT monitors.
- · Hologram projections use screenless display to project high quality 3D images.
- · The working principle of screenless display can also be used in development of screenless TVs.
Advantages and Disadvantages:
Screenless
display provides more accurate colors, higher resolution images, and wider
angle of view. Moreover, it requires low power and provides higher levels of
brightness & contrast. The features such as ability to present 3d images
and far-point images enable their use in treatment of myopia. From the
environment point of view, screenless display would be preferred as toxic
elements such as lead, arsenic, phosphorus, mercury, and others are not used in
their manufacturing process.
The
cost of experiment models and prototypes of screenless display is high. The
virtual retinal display (VRD) technology is not available in significant
number. VRD Technology is under development.
Future Enhancements:
Companies
are investing in huge amount in R&D activities of screenless display
technology. Google is in process of developing a compact video camera that
films everything the viewer sees, and glasses that would show information that
viewer wants without screen or projector. Adobe systems are developing cross
platform of various applications that can be viewed without screen. Japanese
scientists invented intelligent glasses that remembers the place where people
saw their keys, mobiles, and other things for the last time.
Increasing
awareness and adoption of advanced technologies and growing disposable income
are factors that drive screenless display market. Furthermore, emergence of
virtual reality devices compatible with smartphones supplements growth. Screenless
display is evolving in the field of computer technology owing to technological
advancements.
Analysts
studying the screenless display market have presented precise market data in
research reports. Recently, Allied Market Research has published a report
titled, “World
Screenless Display Market - Opportunities and Forecasts, 2014 - 2020.”
As per the report, the world screenless display market is expected to grow at a
CAGR of 29.9% from 2015 to 2020 and estimated to reach $5.7 billion by 2020.
The report provides an extensive analysis of drivers & opportunities,
competitive intelligence, dominant segments, and value chain analysis. More
