This is brief summary of my report about an overview of LCD technology and competing approaches to flat panel displays.
As technology improves, the displays of electric devices are changing to thin and light monitors. Therefore Liquid Crystal Displays are replacing the big and heavy CRT monitors. The structure of LCD is composed of two sheets of specially treated glass such as Indium Tin Oxide (ITO), contains a liquid crystal solution, and a pair of polarizers.
Type of LCD:
• Twisted Nomadic (TN) panel is used widely in LCD based on the cheap price and quick response time, but large difference in contrast with viewing angle. Twist angle between Liquid crystal is 90 degree.
• Super Twisted Nomadic (STN) has larger twist angle than TN. The twist angle between Liquid crystal is 240 degree.
• In Plane Switching (IPS) has the best image quality in LCD technology, and much better viewing angle performance.
• Vertical Alignment (VA) panel has higher contrast ratios than other types of panel. This type of LCD has some issues in color shift.
In this seminar, I learned when the products of LCDs with LED backlight increase, the products of LCDs with CCFL backlight decrease, and also LCDs are considered the best display for many applications in the past, even though they are not as versatile as CRTs.
If I can ask a question, I would like to know in the future, is it possible that plasma or LED displays will replace LCDs on those electric devices.
As technology improves, the displays of electric devices are changing to thin and light monitors. Therefore Liquid Crystal Displays are replacing the big and heavy CRT monitors. The structure of LCD is composed of two sheets of specially treated glass such as Indium Tin Oxide (ITO), contains a liquid crystal solution, and a pair of polarizers.
Type of LCD:
• Twisted Nomadic (TN) panel is used widely in LCD based on the cheap price and quick response time, but large difference in contrast with viewing angle. Twist angle between Liquid crystal is 90 degree.
• Super Twisted Nomadic (STN) has larger twist angle than TN. The twist angle between Liquid crystal is 240 degree.
• In Plane Switching (IPS) has the best image quality in LCD technology, and much better viewing angle performance.
• Vertical Alignment (VA) panel has higher contrast ratios than other types of panel. This type of LCD has some issues in color shift.
In this seminar, I learned when the products of LCDs with LED backlight increase, the products of LCDs with CCFL backlight decrease, and also LCDs are considered the best display for many applications in the past, even though they are not as versatile as CRTs.
If I can ask a question, I would like to know in the future, is it possible that plasma or LED displays will replace LCDs on those electric devices.
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