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GDEW0154M09 Datasheet(PDF) 54 Page - List of Unclassifed Manufacturers

Part # GDEW0154M09
Description  1.54 inch E-paper Display Series
PDF  58 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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GDEW0154M09 Datasheet(HTML) 54 Page - List of Unclassifed Manufacturers

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6. Optical characteristics
6.1 Specifications
Measurements are made with that the illumination is under an angle of 45 degrees,
the detection is perpendicular unless otherwise specified.
T=25℃
SYMBOL PARAMETER CONDITIONS MIN
TYPE
MAX
UNIT Note
R
Reflectance
White
30
35
-
%
Note
6-1
Gn
2Grey Level
-
-
DS＋(WS-DS)×n(m-1)
-
L*
-
CR
Contrast Ratio
indoor
8
-
-
-
-
Panel’s life
0℃~50℃
1000000 times or 5
years
Note
6-2
WS : White state, DS : Dark state
Gray state from Dark to White : DS、WS
m : 2
Note 6-1: Luminance meter : Eye – One Pro Spectrophotometer
Note 6-2: Panel life will not guaranteed when work in temperature below 0 degree or
above 50 degree. Each update interval time should be minimum at 180 seconds.
6.2 Definition of contrast ratio
The contrast ratio (CR) is the ratio between the reflectance in a full white area (R1)
and the reflectance in a dark area (Rd)() :
R1: white reflectance Rd: dark reflectance
CR = R1/Rd
Ring light
Detector
θ
Display
GDEW0154M09
www.e-paper-display.com
54／58
1.54 inch Series



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