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Media LCD Question & Answer

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Media LCD Question & Answer

What's about LCD?

2012/04/19

A1.	liquid crystal display (LCD) is a flat panel display that uses the light modulating properties of liquid crystals (LCs). LCs do not emit light directly. LCDs are used in a wide range of applications, including computer monitors, television, instrument panels, aircraft cockpit displays, signage, etc. They are common in consumer devices such as video players, gaming devices, clocks, watches, calculators, and telephones. LCDs are more energy efficient and low electrical power consumption enables it to be used in battery-powered electronic equipment. It is an electronically modulated optical device made up of any number of segments filled with liquid crystals and arrayed in front of a light source (backlight) or reflector to produce images in color or monochrome. The most flexible ones use an array of small pixels.

A1.

liquid crystal display (LCD) is a flat panel display that uses the light modulating properties of liquid crystals (LCs). LCs do not emit light directly.
LCDs are used in a wide range of applications, including computer monitors, television, instrument panels, aircraft cockpit displays, signage, etc. They are common in consumer devices such as video players, gaming devices, clocks, watches, calculators, and telephones. LCDs are more energy efficient and low electrical power consumption enables it to be used in battery-powered electronic equipment. It is an electronically modulated optical device made up of any number of segments filled with liquid crystals and arrayed in front of a light source (backlight) or reflector to produce images in color or monochrome. The most flexible ones use an array of small pixels.

What is dynamic contrast ?

2012/04/19

A2.	The contrast ratio is a property of a display system, defined as the ratio of the luminance of the brightest color (white) to that of the darkest color (black) that the system is capable of producing. A high contrast ratio is a desired aspect of any display. It has similarities with dynamic range. A notable development in the LCD technology is the so-called "dynamic contrast" (DC). When there is a need to display a dark image, the display would underpower the backlight lamp, but will proportionately amplify the transmission through the LCD panel. This gives the benefit of realizing the potential static contrast ratio of the LCD panel in dark scenes when the image is watched in a dark room.

A2.

The contrast ratio is a property of a display system, defined as the ratio of the luminance of the brightest color (white) to that of the darkest color (black) that the system is capable of producing. A high contrast ratio is a desired aspect of any display. It has similarities with dynamic range.

A notable development in the LCD technology is the so-called "dynamic contrast" (DC). When there is a need to display a dark image, the display would underpower the backlight lamp, but will proportionately amplify the transmission through the LCD panel. This gives the benefit of realizing the potential static contrast ratio of the LCD panel in dark scenes when the image is watched in a dark room.

LCD Panel has how many types?

2012/04/19

A3.	LCD panel basically has three types:TN, VA, IPS. VA panel has four types: MVA, P-MVA, PVA, S-PVA, and IPS has two types: S-IPS, AS-IPS, but the panel maker are innovating new panel types all the time.

What is the advantage and disadvantage of IPS panel？

2012/04/19

A4.	IPS monitor(In-plane Switching monitor) is one-type of monitors that are in demand today. All the advantages possessed by the IPS monitors have made it as one of the monitors that have a strong competitive edge. IPS monitors are made to improve the TN panel monitor(Twisted Nematic panel monitor) that has a few shortcomings. There are some differences between the IPS monitor vs. TN panel monitor be seen from the structure of the crystals and the placement of the electrodes. IPS monitor’s structure of the crystals from the crystals in the cells of the IPS panels lying always in the same plane. While the structure of the crystals in the TN crystals panel monitors from its modern alignment on screen. In IPS monitors, their response times are much improved over previous generations as slow as 60ms on the “official” black-to-white-to-back Transitions. While the TN panel monitor, their response times are below average reach a limit of around 5ms. There are two advantages IPS monitors that cover the limitations of the TN panel monitor. They are a small viewing angles and low-quality color reproduction. IPS monitors have multiple versions of the monitor, but still give high viewing angles of up to 178 degrees. As for the TN panel monitor, it has high viewing angles are pretty and restrictive, especially vertically. Moreover, it will be seen more clearly and sharply again if you look at the screen from below. Usually IPS monitors are used by technology like the iPhone and iPad, while TN panel used in the LCD monitor screen.

A4.

IPS monitor(In-plane Switching monitor) is one-type of monitors that are in demand today. All the advantages possessed by the IPS monitors have made it as one of the monitors that have a strong competitive edge. IPS monitors are made to improve the TN panel monitor(Twisted Nematic panel monitor) that has a few shortcomings.

There are some differences between the IPS monitor vs. TN panel monitor be seen from the structure of the crystals and the placement of the electrodes. IPS monitor’s structure of the crystals from the crystals in the cells of the IPS panels lying always in the same plane. While the structure of the crystals in the TN crystals panel monitors from its modern alignment on screen. In IPS monitors, their response times are much improved over previous generations as slow as 60ms on the “official” black-to-white-to-back Transitions. While the TN panel monitor, their response times are below average reach a limit of around 5ms.

There are two advantages IPS monitors that cover the limitations of the TN panel monitor. They are a small viewing angles and low-quality color reproduction. IPS monitors have multiple versions of the monitor, but still give high viewing angles of up to 178 degrees. As for the TN panel monitor, it has high viewing angles are pretty and restrictive, especially vertically. Moreover, it will be seen more clearly and sharply again if you look at the screen from below. Usually IPS monitors are used by technology like the iPhone and iPad, while TN panel used in the LCD monitor screen.