screenless display technology seminar ppt and report free download

 What is Screenless Display?

Screenless display is an interactive projection technology developed to solve the problems related to the device miniaturization of the modern communication technologies.

The lack of space on screen based displays provides an opportunity for the development of screenless displays. As the name indicates screenless display has no screen and it can be defined as a display used to transmit any data such as pictures or videos without the help of screens.

Types of Screenless Display

Screenless display technology is divided into three main categories:

1. „Visual Image Display
2. „Retinal Display
3. „Synaptic Interface 

1. Visual Image Display:

The visual image is a type of screenless display, which recognizes any type of image or thing with the help of the human eye.The following are few examples of the visual image display: holographic display, virtual reality goggles, heads up display, etc. The working principle of this display states that the light gets reflected by the intermediate object before reaching the retina or the eye. The intermediate object can be a hologram, Liquid Crystal Displays (LCD)s or even windows.

 

2. Retinal Display:

The second category of advancement in display system, retinal display as the name itself indicates the display of image directly onto the retina. Instead of using some intermediate object for light reflection to project the images, this display directly projects the image onto the retina.The user will  sense that the display is moving freely in the space. Retinal display is commonly known as retinal scan display and retinal projector.This display allows short light emission, coherent light and narrow band color.

 

3. Synaptic Interface:

The third category, synaptic interface means sending information directly to the human brain without using any light. This technology is already tested on humans and most of the companies started using this technology for effective communication, education, business and security system. This technology was successfully developed by sampling the video signals from horse crab eyes through their nerves, and the other video signals are sampled from the electronic cameras into the brains of creatures. 

 

Advantages

The technology of screenless display has numbers of advantages over other display technologies previously used, some of them are as listed;

1. „Power required is less.

2. „High resolution image display is possible.

3. „The devices manufactured using this technology is very portable.

4. „Viewing angle of the image is wider compared to previous technologies.

5. „Properties of contrast and brightness are way to greater.

    

Disadvantages and Costs:

Disadvantages

– Currently very expensive
– Very limited quantities available
– Uncertainty regarding vision and general health problems

Costs

– Risky investment for companies since customer acceptance of the product is not guaranteed
– More time is allocated to training employees about the products to assist customers

 

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