The document discusses different types of video display devices including cathode ray tube (CRT) displays and flat panel displays. CRT displays use an electron gun to create images on a phosphorus screen but have disadvantages like large size, weight, and high power consumption. Flat panel displays like liquid crystal displays (LCDs) and plasma display panels are thinner, lighter, and use less power than CRTs. LCDs have advantages such as portability, reduced eyestrain, and thin panels but have limitations like dependence on viewing angle and slower response times. Plasma displays can be large, have good color rendering, and brightness but also have high costs and power consumption.

1. Group members Alisha Korpal Nivia Jain Sharuti Jain

2. A video display device is a device for visual or tactile presentation of images(including text) acquired, stored, or transmitted in various forms .

3. CRT Flat panel Displays

4. The cathode ray tube (CRT) is a vacuum tube containing an electron gun (a source of electrons) and a fluorescent screen, with internal or external means to accelerate and deflect the electron beam, used to create images in the form of light emitted from the fluorescent screen.

6. A single electron gun for a single color monitor Phosphorus screen

7. High dynamic range excellent color The color range of CRTs is unmatched by any display type except OLED Can display in almost any resolution and refresh rate Sub-millisecond response times

8. Large size and weight High power consumption Generates high of heat Can suffer screen burn-in Produces noticeable flicker at low refresh rates

9. A class of video devices that have reduced volume , weight & power requirement than refresh CRT. Currently they are used in pocket videos , laptop etc.

10. Emissive displays Plasma panels Electroluminescent displays Non emissive displays LCD

11. Emissive display are device that convert electrical energy into light Image is directly produced on the screen Phosphorus convert electron beam or UV light into visible light.

12. Light is produced behind the screen and the image is formed by filtering this light.

13. Liquid Crystal Display Portable Less desk space Lack of flicker and low glare reduce eyestrain.

14. A liquid crystal is an organic compound in a transition state between liquid and solid forms that resemble a liquid.

16. Lightweight construction Thin panels Low energy consumption

17. Quality of image depends on viewing angle Low response times

18. A plasma display panel (PDP) is a type of flat panel display. They are called "plasma" displays Technology utilizes small cells containing electrically charged ionized gases commonly known as fluorescent lamps .

19. Large displays Good color rendering Thin panels No dependence on viewing angle Brightness

20. High costs Power consumption