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13
Viewing angle by CR≥20
x axis, right (Ф =0º)
x axis, left(Ф =180º)
y axis, up(Ф =90º)
y axis, down (Ф =270º)
1. Test conditions: (unless otherwise specified, all measurement shall be made under the test conditions below)
-
Ambient illumination level: dark (<10 lux)
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Ambient temperature: 25 °C
-
Optical test will base on standard mode and criteria follow panel Spec. x 80% brightness.
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Warm-up: 60 minutes
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Test equipment: Pattern generator, Minolta CA210.
1
3
D/4
-
Measurement locations on the flat panel:
2. Contrast Ratio CR= Surface luminance (full white pattern) / Surface luminance (full black pattern)
3. Luminance SB
=L5
WH
4. White variation : δW = Max (L1, L2,...L5) / Min (L1, L2,...L5)
5. Viewing angle:
Measurement is done at position 5
Viewing angle origin is the axis normal to the flat panel. Left (L) and right (R) values are the maximum angles
for which CR ≥ 10. Up (U) and down (D) values are the maximum angles for which CR ≥ 10.
See figure below:
80
80
80
80
2
5
4
3D/4
D/2
44
85
-
85
-
85
-
85
-
W/4
W/2
3W/4
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