1. CRT (Cathode Ray Tube)
CRT (Cathode Ray Tube) or in the Indonesian language is a type of cathode ray tube display the oldest and most widely used by the public. CRT originally discovered by German physicist Ferdinand Braun in 1897 and became known as the "Braun Tube".
CRT is a vacuum tube containing an electron gun (Electron guns) and a heating element (heater), which serves to accelerate and deflect the electron beam (electron beams). This is because in a vacuum hot, the electron beam is easy to move from the cathode to the anode.
CRT monitor is a monitor second generation of computer monitors is the first generation of computer monitors in the modern era.
Currently the interest in CRT monitors are becoming obsolete though CRT monitors are still produced. The reason why users start leaving the CRT monitor is due to its large and heavy that it requires extra space to put this monitor. Definition CRT monitors in general is the monitors 'convex' or 'monitor tubes'.
Advantages of CRT Monitors:
- Prices are relatively cheaper
- More accurate and vivid colors
- Flexible monitor resolution
- Easy maintenance
- Free of dead pixels, ghosting and viewing angle
Disadvantages CRT Monitor:
- Consumption of electricity greater
- Damaging eye
- Ray radiation that result in less good for the people, the brain, eyes and hair cells
- Depending on refreshrate
- Vulnerable distortion, glare and flicker
- The dimensions are large and heavy that it takes up less space
2. LCD (Liquid Crystal Display)
Monitor LCD (Liquid Crystal Display) monitor that is collated by using "liquid crystal". LCD is a digital display technology that produces an image on a flat surface (flat) with a ray in the liquid crystal and colored filters, which have a polar molecular structure, sandwiched between two transparent electrodes.
Technology found since 1888, is the processing of liquid crystals contain a chemical liquid, in which the molecules can be arranged if given the electric field as the molecules of metal when given magnetic field. When set correctly, light can pass through the liquid crystal.
The workings of the liquid crystal LCD monitor is structured like a sandwich between pieces of polarized glass. Neon lights behind the panel emits light that passes through the first substrate. The electrical charge to make the cells crystal aligning different tones allow light to pass through the second substrate. The result is a stunning colors displayed on the screen, so no cathode tubes, no radiation, no more head or eye pain.
Excess consumption of LCD monitors is the lack of energy used also have a sharper image contrast compared to CRT. Definition LCD monitor refers to the use of variants of pixels (dots of color of light) that does not emit its own light as well as CRT monitors. In LCD technology light source comes from white fluorescent lamps are arranged evenly on the rear of the arrangement of pixels (liquid crystal) earlier numbering in the millions of pixels to form an image. Polar liquid crystals through which the electrical current will change due to the influence of magnetic field polarization arising and therefore will only let a few colors forwarded while other colors are filtered.
Excess LCD Monitor:
- The image quality is crisp and clear
- Produce more realistic colors
- Rays emitted by the LCD does not tire the eyes
- The consumption of electricity more efficient
- Frendly user display settings (easy)
- Dimensions are thin and light so it saves space
- Anti-glare technology (no shadow)
- There is no radiation emitted
Disadvantages LCD Monitor:
- The LCD screen tends to be more sensitive
- Viewing angle is limited, unlimited color depth and gradation of color less
- Display pictures in resolution only good nativenya
- Response time and ghosting
- Prices are more expensive, need extra care and caution dead pixels
3. LED
Monitor LED (Light Emitting Diode) has the same technology as the LCD with the further development of LCD display which has the effect of enhancing the color displayed is more variation in color.
Differences physically on the computer LEDs generally lies in a leaner shape / thinner. In some types of LED functions and features that are more complete than LCDs, such as digital touch screen capability, Digital TV internet, digital TV tuner. While in general the difference between LED and LCD lies only in the lighting system which uses LED backlight technology. In contrast to LCD using CCFL Backlight (Cold Cathode Fluorescent Lamp) in the Indonesian language "manifold fluorescent neon light", the LED monitor can save electricity consumption up to 50-70% compared to the LCD with the ability to produce extremely sharp images.
Advantages of LED Monitor:
- The image contrast very sharply to millions of pixels
- Consumption of electricity is more efficient than LCD
- Minimum use of LEDs are longer
- The size of a more slim lighter than LCD
- The lighting is better than LCD
- More environmentally friendly
Disadvantages LED Monitor:
- Prices are more expensive than LCD
- The LED display is thinner tend to be more sensitive
4. Plasma
Plasma Display Panel (PDP) or in Indonesia known as the Plasma TV or Plasma Monitor is a type of monitor that combines CRT with LCD technology. With the resulting technology, capable of making LCD screens with thinness resemble and can be as wide viewing angles CRT.
The term and concept of Plasma TV technology introduced in 1936 by an expert of Physics. Monitor plasma using a full color flat panel phosphor to display images, so the combination and the resulting color reproduction is excellent and interactive. PDP itself is derived from the use of plasma cells, which are Fluorescent lamp, as the basic lighting of the television screen. A Plasma TV utilizing millions Plasma cells are placed between two panes of glass screen. Each cell contains a combination of noble gas and a small amount of mercury to be evaporated and given an electrical charge and form a plasma to fluoresce. Colors produced from phosphorus contained in the cell, where in each cell would contain phosphorus three main color types, namely: Red, Green, and Blue, or commonly known as RGB. The difference voltage given to each cell also produce color combinations that exist.
Excess Plasma Monitor:
- Produce black better than LCD TV
- Contrast ratio is high (1: 2,000,000)
- The viewing angle is wider
- Refresh Rate and Response Time is fast, minimizing the blurring image display
- Sleek
Disadvantages Plasma Monitor:
- The still image is displayed for a long time will cause burning and ghosting
- The image quality will continue to decrease with the duration of use
- Prices are relatively expensive
- Having a large pixel pitch size
- Has a very large weight
- Power consumption and high operating temperatures
- Cell plasma for representatives of each pixel of the image only has an on / off so that the color reproduction is much more restricted than the type of CRT or LCD
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