B_min
X
100%
B_max
Where B_max = Maximum brightness
B_min = Minimum brightness
8.10 White
Uniformity
Definition of White Variation
(δ
W):
Measure the luminance of gray level 255 at 9 points
δ
W = Maximum [L(1), L(2) …… L(9)] / Minimum [L(1), L(2) …… L(9)]
8.11
Contrast ratio
The contrast ration can be calculated by following expression.
Contrast Ratio (CR) = L255 / L0
L255 : Luminance of gray level 255
L0 : Luminance of gray level 0
Min. value:
800:1(AUO)
Typical value:
1000:1(AUO)
8.12
White color adjustment
There are three factory preset white color 9300K, 6500K, sRGB.
Apply full gray64 pattern, with brightness in 100 % position and the contrast control at 50 % position.
The 1931 CIE Chromaticity (color triangle) diagram (x,y) coordinate for the screen center should be:
8.13
Distance between TFT LCD monitor and CRT/TFT monitor
Conducted with different modes or frequencies. No interference in a distance down to 25 cm.
68
220EW8 LCD
9
2
4
5
6
7
8
1
3
10%
50%
90%
10%
50%
90%
Содержание LCD widescreen monitor 220EW8FB
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Страница 12: ...Wiring Diagram CN2 1 2 29 30 CN7 8 1 CN3 CN4 CN1 7 8 1 2 CN101 CN1 CN2 CN3 CN4 CON1 1 8 220EW8 LCD ...
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Страница 32: ...Layout Side View Scaler board S B S B 220EW8 LCD ...
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Страница 35: ...Layout Side View Button board B A B A B B B B 220EW8 LCD CON1 A5 SW2 B5 SW5 C5 SW4 D5 SW1 E5 LED1 E5 SW3 F5 ...