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Frequently
Asked Questions What
is an LED? LED
stands for ‘Light Emitting Diode’, which converts electric signal to
infrared or light signals by exploiting the characteristic of compound
semiconductors. It is comprised of an alloy crystal or semiconductor placed in a
reflective cup and chemically bonded to tiny wires that are encapsulated.
Electricity is applied across one direction of the semiconductor causing the LED
to emit light. What
is a Pixel? A
pixel is the short name for picture element. It is the smallest component of the
display that can be individually controlled. What
is Pixel Pitch? A
pixel pitch (or Center-to-Center Spacing) is distance between the centers of one
pixel to another and measured in millimeters (mm). What
is a Module? A
module is the minimal unit that can display data or a combination of a fixed
number of pixels. What
is Resolution? Resolution
is the overall number of pixels in a single display. The higher
resolutions produce better picture quality. What
is Brightness? Brightness
of LEDs is measured using millicandela (mcd), which is 1/1000 of a
candela. The brightness of a candela is about the brightness of the one
candlelight. What
is Viewing Angle? The
viewing angle is the total spectrum that the characters are legible.
Typical viewing angles range from 90 degrees to 150 degrees. What
is Viewing Distance? The viewing distance is measured in feet and denotes the maximum lateral distance a character size of a display is legible. |