Screenless Display

The latest display technology -Touch Screen Display, commonly used in our smart phones and tablet computers will move to a mere history in the coming future. Screenless Display, the emerging new display technology will replace this touch screen environment. 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.

What is Screenless Display?
Screenless Display was an excellent thought that came into many experts inorder to solve the major problems related to the device miniaturization. Lower space screen displays have made the need of screenless displays more than ever. Screenless, as the word suggests clearly means ‘no screen’. So, Screenless Displays can be defined as a display which helps to display and even transmit any information without the aid of screens. Screenless Display currently uses Interactive Projection technology with visual display and 3D Projection Technology.

Screenless Display Types:
Screenless Display can be grouped into three main categories. They include Visual Image, Retinal Display and Synaptic Interface.

Visual Image Screenless Display:

Visual Image is a type of screenless display where the eye or the retina can recognize any screenless image. Holographic display, Virtual Reality Goggles and Heads Up Display are some present visual image screenless display examples. The display works on the principle that; light gets reflected by the intermediate object before reaching the retina. The intermediate object can be holograms, windows, or even LCDs.

Holographic messages that became popular through the ‘Star War Film’ are now becoming a truthful reality. Holographic Displays allow the display of three dimensional images by using simple components like Helium – Neon Laser, a Lens, an object, mirror and a holographic film. The laser beam used will initially create a plasma environment. When the laser and object beams coincides, a 3D image will be projected. The projected image will appear to be floating in air. Presently, MIT’s Media Lab reported a holographic color video display (inexpensive) with the resolution of TV. Latest fiction movies the ‘Iron Man’ and ‘Avengers’ have shown this technology in more advanced form. This advancement can be expected in the coming future.



Virtual Reality Goggles (VRG) is an eyewear display device. 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. Presence of polarized lenses is the major feature of VRG. These lenses will show two images, one per each eye and the brain combines them to form a three dimensional image. They show an illusion of depth. Many of these goggles are accompanied by head tracking systems connected to a computer, thereby adjusting images seen by the wearer as they move around.

‘World of Warcraft’, ‘Quake2’ are some popular games that can be played using VRG. The famous ‘Oculus Rift ‘and the recent ‘Google’s Cardboard Virtual Reality Goggles’ is an evidence that VRG is on its way. Now many DIY VRG are coming out since it requires only components like a smartphone, two lenses, a rigid paper or cardboard and some tape. ‘Sony Headman’ a virtual reality headset by ‘Sony ‘is also gaining popularity now.

Heads Up Display (HUD) are transparent displays. They can be useful for aeroplanes, automobiles, computer games etc. The device will project information on a windshield such that the users do not need to look away from their field of view. An ordinary HUD contains a projector unit, combiner and a computer as its components. Projector Unit will project the image and the combiner will redirect the projected image such that we can see the field of view and the projected image at the same time. Computer is an interface between projector unit and data to be displayed.

Recent ‘Portable Garmin’s HUD’ for automobiles projects navigation information onto the windshield. The device is placed on the dashboard of the car which works wirelessly with a Bluetooth enabled smartphone. Estimated arrival time, lane assist, speed, traffic and safety camera alerts are the informations displayed. ‘Russian Hudway App’ utilizes just a smartphone (no projector) to act as HUD. It keeps track of speed, location, coming curves and hills in road, and distance by using the device accelerometer and GPS. Many aircrafts (e.g.: Embraer 190, PZL TS-11 Iskra), air buses, cars (e.g.: BMW E60, 2013 Toyota Prius) are using this device. 

Visual Image Screenless Displays has the advantage of creating and even manipulating the images upto any size. Manipulation is possible in the Image Mode; also multiple bitmaps can be composited together in the Object Mode in this category of displays. In Visual Screenless Displays, EYE Files are created. EYE Files generally include all the images that are loaded. The ‘Export Project Command’ in ‘File’ will create the EYE File. These files will provide a provision to save any unsaved visual image as bitmaps into it. Catalogs of images can be created in an EYE File. ‘Export Editor Command’ in ‘File’ will allow to browse the desired image files on disk to place it under a common catalog. Thus visual catalog files can also be created in the EYE File. Visual Image Screenless Displays with different advantages and better advancements will surely provide a roadway for screenless displays.



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