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LTM220MT05 Datasheet(Hoja de datos) 10 Page - Samsung semiconductor

No. de Pieza. LTM220MT05
Descripción  color active matrix liquid crystal display (LCD) that uses amorphous silicon TFT (Thin Film Transistor) as switching components
Descarga  34 Pages
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Fabricante  SAMSUNG [Samsung semiconductor]
Página de inicio  http://www.samsung.com/Products/Semiconductor
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 10 page
background image
10/34
Page
LTM220MT05
MODEL
PRODUCT INFORMATION
PRODUCT INFORMATION
Note (9) Color Grayscale Linearity
a. Test image : 100% full white pattern with a test pattern as below
b. Test pattern : Squares, 40mm by 40mm in size, filled with 255, 225, 195, 165, 135 and
105 grays steps should be arranged at the center
of the screen.
c. Test method
-1st gray step : move a square of 255 gray level should be moved into the center of the
screen and measure luminance and u’ and v’ coordinates.
-Next gray step : Move a 225 gray square into the center and measure both
luminance and coordinates, too.
d. Test evaluation
Where A, B : 2 gray levels found to have the largest color differences between them
i.e. get the largest
u’ and
v’ of each 6 pair of u’ and v’ and calculate the
u’v’.
∆u' v' = (u' - u' ) + (v' - v' )
AB
2
AB
2




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