NL6448BC20-21C NEC, NL6448BC20-21C Datasheet - Page 27

• Manufacturer Part Number: NL6448BC20-21C
• Description: TFT DISPLAY, LED, 6.5"
• Manufacturer: NEC

Specifications of NL6448BC20-21C

• Lcd Display Type: VGA
• Display Mode: Transmissive
• Interface Type: LVDS
• Viewing Area (h X W): 99.36mm X 132.48mm
• Supply Voltage: 3.3V
• Illumination Colour: White
• Operating Temperature Range: -20°C To +70°C
• Pixel: RoHS Compliant
• Backlight Type: LED
• Display Technology: LCD
• Rohs Compliant: Yes
• Backlighting Colour: White
• Pixel Pitch (h X W): 0.207mm X 0.207mm
• Svhc: No

4.10.2 Definition of contrast ratio
4.10.3 Definition of luminance uniformity
4.10.4 Definition of response times
4.10.5 Definition of viewing angles
The contrast ratio is calculated by using the following formula.
The luminance uniformity is calculated by using following formula.
The luminance is measured at near the 5 points shown below.
Response time is measured, the luminance changes from "white" to "black", or "black" to "white"
on the same screen point, by photo-detector. Ton is the time it takes the luminance change from
90% down to 10%. Also Toff is the time it takes the luminance change from 10% up to 90% (See
the following diagram.).
Luminance
Luminance uniformity (LU) =
Contrast ratio (CR) =
Black
White
80
400
240
Left
100%
10%
90%
Lower
0%
PRELIMINARY DATA SHEET DOD-PP-0321 (2nd edition)
106
①
④
Normal axis (Perpendicular)
θD
θL
320
Luminance of black screen
Luminance of white screen
θU
③
Ton
Maximum luminance from ① to ⑤
Minimum luminance from ① to ⑤
Upper
θR
533
②
⑤
12 o’clock
Right
Toff
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