FAQs (Frequently Asked Questions)
Q:What are
A:These are 2 separate Y/C video signals from the
luminance signals Y (black and white) and chrominance signals C (colour) are recorded separately on the tape. This provides a better picture quality than is achieved with standard video (VHS and 8
mm)where the Y/C signals are combined to provide only one video signal.
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LCD Panel Technology
Q:What is a Liquid Crystal Display?
A:A Liquid Crystal Display (LCD) is an optical device that is commonly used to display ASCII
characters and images on digital items such as watches, calculators, portable game consoles, etc. LCD is the technology used for displays in notebooks and other small computers. Like
Q:How are LCDs made?
A:LCDs are created from two glass plates separated from each other at a distance of a few
microns. The plates are filled with liquid crystal and then sealed together. The top plate is coloured with an RGB pattern to make the colour filter. Polarizers are then glued to both plates. This combination is sometimes called 'glass' or 'cell.' The LCD cell is assembled into a 'module' by adding the backlight, driver electronics and frame.
Q:What is polarization ?
A:Polarization is basically directing light to shine in one direction. Light is electromagnetic waves.
Electric and magnetic fields oscillate in a direction perpendicular to the propagation of the light beam. The direction of these fields is called the 'polarization direction'. Normal or
Q:What differentiates passive matrix LCDs from active matrix LCDs?
A:An LCD is made with either a passive matrix or an active matrix display grid. An active matrix has
a transistor located at each pixel intersection, requiring less current to control the luminance of a pixel. For this reason, the current in an active matrix display can be switched on and off more
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