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2. System Reference
Display Optical Specifications
Table 2.3.
Display Optical Specifications
Parameter
Visual angle
(vertical)
Visual angle
(horizontal)
Surface brightness
(at center)
* "Surface brightness" represents a numerical value per display. The expected brightness through a touch panel is about
80% lower than the above value.
Brightness at screen center with white displayed
Contrast ratio (CR) =
Brightness at screen center with black displayed
Z
o
( θ = 0
)
Left
o
( φ = -90
)
θ
φ
X
Bottom
o
( φ = 0
)
Figure 2.1. Definition of viewable range
CAUTION
The above optical specification data shows optical characteristics of the liquid crystal in the display;
the data does not represent the actual view on the display or its viewing angles.
10
Condition
φ = 180°
Display.
φ = 0°
CR ⊇ 10
Monochrome
φ = +90°
φ = -90°
Display in white
Measurement direction
Top
o
( φ = 180
)
Module
Right
o
( φ = 90
)
Y
Min.
Typ.
70deg
80deg
70deg
80deg
70deg
80deg
70deg
80deg
190cd/m
250cd/m
2
2
PT-955LXC-DC5311 User's manual
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