Screenless displays are display technologies that allow information to be presented without using a physical screen. They include retinal projection displays, which project images directly onto the retina, and synaptic interfaces, which send visual signals directly to the brain. The document discusses several types of screenless displays, including virtual retinal displays, holographic displays, and brain-computer interfaces. It outlines the advantages of screenless displays in having lower power needs and weight than traditional screens, as well as the challenges in developing the technologies and ensuring eye safety.

1. SCREENLESS
DISPLAYS
Submitted To: Submitted By:
Mrs. Sonia Nitika vig
MSc(IT) 3rd Sem
2056

2. INTRODUCTION
Screenless display is one of the
most interesting subject in the technologies
and researches. It is system of transferring
information/data through an electronic
video without using screens at all.

3. SCREENLESS
DISPLAYS Screenless, as the
word suggests
clearly means ‘no
screen’. So, Screen
less Displays can be
defined as a display
which helps to
display and even
transmit any
information without
the aid of screens.

4. continued
..
The main aim of the Screenless Display is
to display or transmit the information
without the help of a screen or the
projector.
Using this display, we can directly
project images onto the human
retina, open space and even to
the human brain. It avoids the need of
high weight hardware and it will provide
privacy at a high rate.

5. TYPES OF SCREENLESS
DISPLAYS
Screenless
display
Visual
display
Synaptic
display
Retinal
projection

6. 1.VISUAL IMAGES
Visual Image is a
type of screenless
display where the eye
or the retina can
recognize any
screenless image.
Holographic
display, Virtual Reality
Goggles are some
present visual image
screenless display
examples.

7. Example:
Virtual Reality Goggles (VRG)
Virtual Reality
Goggles (VRG) is an
eyewear display device.
Also known as Oculus
Rift. Wearer can view
and interact with a
series of computer
generated images.
Consist display screens
in front of face. Images
can be projected with
sound and video,
allowing it more popular
for entertainment
applications.

8. 2.VIRTUAL RETINAL
DISPLAY
Virtual Retinal Display (VRD), a
screenless display technology allowing the
image directly to be projected on to the retina.
In VRD, no real image is produced. It just
beams the image to our eye balls directly.
Retinal Scan Display and Retinal Projector
are some common popular name of it.

9. Retinal Projection
Fig: How vision
works
Fig: Retinal Projection

10. 3.SYNAPTIC INTERFACE
Synaptic Interfaces does not use light at
all and the visual image is directly given to the
brain.
 Brain Computer Interface (BCI) / (MMI)
 No light projection.
 Image directly send to brain.
 Achieved only in living horseshoe crab.

11. continued..
Synaptic interface
can be used to
provide vision who
have defect of eye
by bypassing the
damage eye parts
and sending visual
signal straight to the
brain .

12. ADVANTAGES
 Low power requirements.
 High resolution images.
 Ability to represent 3D images.
 Greater portability.
 More accurate color.
 Wider angle of view.

13. DISADVANTAGES
 Virtual Retinal Display (VRD) is not yet
available in significant number.
 Basically it higher cost.
 Synaptic Interaction is not yet implemented .
 May harm to eyes as these displays required
closer interaction.

14. PREDICTION
Screen less display technology is likely to
effect:
 Lighting and projection technology.
 Lifestyle of visual impaired.
 Not to carry extra hardware for display.
 This will remove occupational limitations of
the visually impaired.

15. CONCLUSION
Screen less Display, the emerging new
display technology will replace this touch
screen environment and will solve the
problems at higher level, making life more
comfortable. It avoids the need of high weight
hardware.