Display Types

Display types:

1)      Cathode ray tube (CRT)

A CRT works by moving of an electronic beam or electronic gun (a source of electrons or electron emitter) through a vacuum tube which hits the fluorescent screen and thus forms the images, electrical waveforms, radar targets etc.

2)      Plasma display panels (PDP)

A PDP is common for large displays (normally about 30 inches i.e., 76cm). This technology utilizes small cells containing electrically charged ionized gases. These gases are colorless, odorless, tasteless, and non flammable under standard conditions and have extremely low level of reactivity.

3)      Liquid crystal display (LCD)

A LCD is electronically modulated optical device made up of any number of pixels filled with liquid crystals. Each individual pixel is divided into three cells, or sub pixels, which are colored red, green and blue using pigment filters, dye filters and metal oxide filters.

In this there are two types:

i)                    Thin film transistor (TFTLCD)

ii)                  High performance Addressing (HPALCD)

4)      Light Emitting diode (LED)

A LED is a semiconductor diode that emits incoherent narrow spectrum light when electrically biased.

5)      Organic LED (OLED)

A OLED is also light emitting polymer (LEP) or organic electro luminescence (OEL). In which the emissive electroluminescent layer is a film of organic compound which emits light in response to an electric effect.

 

6)      Active matrix OLED (AMOLED)

A AMOLED display consists of OLED pixels that have been integrated onto a thin film transistor array to form a matrix of pixels that illuminate light upon electrical activation.

7)      Retina display

A virtual retinal display(VRD) also known as retinal scan display or retinal projector that utilizes displays directly onto the retina of the eye. The uses sees what appears to be conventional display floating in space in front of them.

8)      Super Twisted Nematic display (STN)

A STN is a monochrome passive matrix liquid crystal display.

9)      Laser display

A Laser display utilizes two or more individually modulated optical rays of different colors to produce a combined spot that is scanned and projected across the image plane by a polygon mirror.

10)  Surface conduction electron emitter display (SED)

A SED utilizes nanoscopic scale electron emitter to energise colored phosphors and produce an image. It consists of a matrix of tiny cathode ray tubes, each “tube” forming a single sub pixel on the screen, grouped in threes to form RGB pixels.

11)  Carbon nanotube (CNT)

A CNT are allotropes of carbon with a cylindrical nanostructure. These cylindrical carbon molecules have novel properties making them potentially useful in many applications in nanotechnology, electronics, optics and other fields.

12)  Quantum dot LED (QDLED)

A QDLED a semiconductor nanocrystals are a form of light emitting technology and consist of nano scale crystal that can provide an alternative for applications.

13)  Interferometric modulator display (IMOD)

A IMOD creates colors via interference of reflected light. It is based on reflective flat panel display includes hundreds of thousands of individual IMOD elements each a microelectromechanical systems based device.

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 COPY-WRITE OWNED BY PRAMOD KUMAR