Go to cover page
12
4. FLAT
PANEL:
4.1. General Requirements
The panel used as the display device shall be a WSXGA resolution, 20” diagonal, TFT-LCD.
4.2. Panel Timings
The controller included with the monitor shall translate all video timings from the CPU that meet the timing
requirements listed in Panel specification into timings appropriate for the panel. Under no circumstances may the
controller supply the panel with timings that may result in damage. The controller shall insulate the panel from the
CPU, so that the panel shall always be driven per its own specification regardless of the timings being sent from the
CPU.
4.3. Polarizer Hardness
The outer face of the front polarizer panel shall be covered with a coating with a 3H hardness value, Haze 44%
(AMLCD).
4.4. Backlight Requirements
4.4.1. General
Requirements
The backlight assembly shall be designed to support field replacement at the customer site or authorized service
center. The lamps shall have a continuous operating life of at least 50,000 hours at 25oC. The operating life is
defined as having ended when the illumination of light has reached 50% of the initial value. The lamps shall
extend a sufficient amount from the edge of the light guide that sputtering over the life of the lamps shall not
cause degradation of the luminance uniformity (such as non-illuminated bands along the edges of the display).
4.4.2. Lamps
Startup
Time
The backlight lamps shall start within 3 sec. of the time the monitor power switch is pressed or the monitor is
restarted from a power - down mode .The starting time shall stay below 3 sec. for the minimum expected life of
the lamps.
Test conditions are as follows:
Ambient Light ----------------------
< 1.0 lux.
Temperature--------------------------
10oC
Inactive Time -----------------------
> 24 hours
4.5. Defects:
4.5.1. Visual
Inspection
The LCD panel shall be inspected with all pixels set to white, black, red, green, and blue. The color variation,
brightness variation, and overall appearance must not be perceived as poor quality by Lite - On. Areas and / or
parameters considered questionable shall be subjected to detailed measurements.
