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SPECIFICATION
Liquid Crystal Display LC104S1-A1
Notes : 1. Contrast Ratio (CR) is defined mathematically as :
Surface Luminance with all white pixels
Contrast Ratio =
Surface Luminance with all black pixels
2. Surface luminance is the center point across the LCD surface 500 mm from the surface with all
pixels displaying white. For more information see FIG 2.
When I
BL
=6.0mA, L
WH=
102cd/m
2
(Min.) 120cd/m
2
(Typ.) under Transmissive mode only
3. The variation in surface luminance ,
d
WHITE is determined by measuring L
ON
at each test
position 1 through 5, and then dividing the maximum L
ON
of 5 points luminance by minimum L
ON
of 9 points luminance. For more information see FIG 2.
δ
WHITE = Maximum (L
ON1
,L
ON2
, ….. L
ON9
)
/
Minimum (L
ON1
,L
ON2
, ….. L
ON9
)
4. Response time is the time required for the display to transition from to black(Rise Time, Tr
R
)
and from black to white (Decay Time, Tr
D
). For additional information see FIG 3.
5. Viewing angle is the angle at which the contrast ratio is greater than 10. The angles are
determined for the horizontal or x axis and the vertical or y axis with respect to the z axis which
is normal to the LCD surface. For more information see FIG 4.
6. Gray scale specification
Gray Level
Luminance(%)
(Typ.)
L0
L7
L15
L23
L31
L39
L47
L55
L63
1.3
2.1
5.3
10.0
17.7
28.2
43.6
65.3
100
Alpha Point Ltd.
Vernissakatu 8A
01300 Vantaa, Finland
http://www.alpha.fi
Tel.: +
358-9-34 64 34 1
Fax: +
358-9-34 64 34 2