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 Product
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Home > Product
Support > FAQs |
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FAQs |
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Monitor  |
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What is TFT LCD?
Thin-Film-Transistors
Liquid-Crystal-Display is based on extremely thin
transistors with liquid crystal materials. TFT
applied to the devices that control its color display
elements during operation and liquid crystal is
substance that is neither liquid nor solid but
exists somewhere in between the two. Blending certain
base materials (e.g. biphenyls, dioxene) with other
materials to obtain various desired properties
such as viscosity, elasticity, reflective index,
etc forms liquid crystal materials. |
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What is refresh rates? And is this applicable
to LCD monitors?
Unlike CRT display technology in which the speed
the electron beam is swept from the top to the
bottom of the screen determines flicker. AMLCD
(active matrix liquid crystal display) uses an
active element TFT to control each individual pixel
and thus refresh rates are not applicable to LCD
technology. |
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What is viewing angles?
Because the optical characteristics
of the liquid crystal materials differ with the
viewing angle, the quality of the image displayed
on a LCD panel is best when viewed at a direct
right angle to the front of the panel. The current
LCD offers by ADVAN monitors have minimum horizontal
and viewing angles of 140° and 120° respectively.
With some of our model off viewing angles of
170°, equivalent to a CRT monitor, are also
now available. |
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What is pixel defects and how can it be recognized?
The LCD panel consists of numerous pixels. The
larger the size of the panel, the more pixels
and the greater the chance that some will be
defective and remain fully on/off or partially
active. Pixel defect is mostly caused by the
miss function of TFT. For a display monitor with
maximum resolution of XGA (1024x768) there are
total of 786,432 pixels and each pixel contents
3 transistors. Therefor, a XGA panel contents
total of 2,359,296 transistors and failure of
one transistor can resolve in pixel defect. It
is difficult to manufacture a large panel with
zero defects using current LCD manufacturing
technology. These defective pixels can usually
be recognized as constant white/dark/colored
areas on the screen. |
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What is the backlight?
The backlights within the LCD mainly servers as
illumination source for the display. Most of
all backlight for the LCD display are based on
fluorescent lamps and it consists of a phosphor
coated glass cylinder with cathodes at each end.
Both gas and mercury are filled within the cylinder
then when the correct current is supplied to
the cathodes an arc is formed in the gas. Therefor,
produces ultraviolet light (UV) then which excites
the phosphor on the glass. |
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Where I can get my
ADVAN LCD monitors for service?
Click
HERE to obtain repair services for products
under warranty or call 1-888-786-1688 for non-warranty
repairs service. |
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What is the warranty
period on Advan monitors?
The warranty for ALL
ADVAN LCD TFT is three years parts and labor
with backlights. One year on touch screen glass
and touch screen controller. |
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Does fluctuation in temperature affect the LCD?
The exposed of drastic fluctuation of temperature
from hot to cold or cold to hot, the LCD monitor
may be affected. Especially drastic temperature
fluctuation from cold to hot could cause dew
on the surface which may affect the operation
of the polarizer and product. We STRONGY recommend
using the product at room temperature and humidity
in order to maintain its optimum performance. |
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How do I set up the Advan LCD monitors with Sun's
workstation or other special workstations?
We STRONGLY recommend
using VESA timings with maximum resolution (native
resolution), because TFT-LCD monitors operate best
in native mode. However, if you can't follow these
timings, all our monitors will operate within a
wide range. For correct Auto Tuning function none
standard VESA timing, it is recommended to display
test image at full screen then start
the Auto Tuning process (see user manual for "Auto Setup" or "Auto
Tuning" process). |
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How do I set up the Advan LCD monitors with Macintosh?
For standard Mac type
video port (15-pin/2row), use of Mac video adapter
is require. Select any available video mode via
the DIP switch on the MAC video adapter (Adapter
Setting Chart).
For standard PC type of video port on Mac (15-pin/3
row), use standard PC video cable to connector
the monitor to the video output. We STRONGLY
recommend using VESA timings with maximum resolution
(native resolution), because TFT-LCD monitors
operate best in native mode. However, if you
can't follow these timings, all our monitors
will operate within a wide range. For correct
Auto Tuning function none standard VESA timing,
it is recommended to display test image at full
screen then start the Auto Tuning
process (see user manual for "Auto Setup" or "Auto
Tuning" process). |
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Graphic
Card |
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Are ADVAN monitors compatible with all graphics
cards?
All monitors are multi sync monitors. There is
no one exact frequency required for any resolution.
In general, we STRONGLY recommend using VESA timings
with maximum resolution (native resolution), because
TFT-LCD monitors operate best in native mode. However,
if you can't follow these timings, all our monitors
will operate within a wide range. Furthermore,
please check in the Specifications paragraph of
the user's manual for the recommended resolution.
A
common misconception is that there are monitor
drivers for video cards. This is little more than
just a list of scans frequencies and resolutions.
A few simple guidelines are all that are needed
to setup your video card with an ADVAN monitor:
- If possible, use a 60Hz refresh rate.
- If your card does not offer this range, 70Hz will work,
but do not go over 85Hz you might experience error message.
- There's no need to change sync polarity, any combination will work correctly.
- You cannot damage the monitor with an incorrect video card set up.
- Even if the card allows you to adjust the size of the image using controls on the video card,
always use the monitor's controls to adjust the image size
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