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mermaid ventura 150 TFT x4 - User manual Version 1.1
P/N: 20-1700-00456 Page 21 of 24
Appendix F: Definition of viewing angle.
• Viewing angle is defined as the range,
measured at a 90° angle from the display
surface plane in the centre of the display
panel to that angle, where the the
contrast value has dropped to 10:1 or
5:1. The exact value is defined by the
manufacturer of the panel. See drawing.
• Viewing angle is defined both vertically
and horizontally.
• The two sets of parameters are rarely
common.
The panels in the mermaid ventura 150 x4 have the folloing data:
• Viewing angle Vertical +55°/-60°
• Viewing angle Horizontal: +/-70°
• Contrast: 300:1 (The difference between max. white and black)
• Brightness: 250 cd/m
2
(Backlight output)
Because two panels are mounted on top of each other in pairs, it’s impossible to
experience the same contrast value on all 4 panels, when looking at them from
the same angle.
Please remember, thet even though the viewing angles are fairly high, the
contrast is allowed to drop from e.g. 300:1 to 5:1 within that range, which
equals to 60 times!
The user will typically experience this as colour differences and backlight
uniformity differences.
All 4 panels are taken from the same production batch, which ensures the best
panel homogeneity as possible.
+55°
-60°
0°
90°
+55°
-60°
0°
90°
mermaid
ventura 150x4
Upper
panels
Lower
panels