Datasheet

DEM 640480D TMH-PW-N (C1-TOUCH) Production Specification
Version: 0 PAGE: 12
c. Definition of contrast ratio:
Brightness measured when LCD is at “white state”
Contrast Ratio (CR) = ¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾¾-
Brightness measured when LCD is at “black state”
d. Measured at the center area of the panel when all the input terminals of LCD panel are electrically opened.
e. View Angle
f. Definition of Luminance of White: Luminance of white at the center points
Light Source of Back-Light Unit LED Type
g. Definition of White Uniformity
Min. luminance of white among
9
-
points
White Uniformity =
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
Max. luminance of white among
9
-
points
h. The definition of Color Gamut -Color Chromaticity CIE 1931
Color coordinate of white & red, green, blue at center point.
Color Gamut : NTSC(%) = ( RGB Triangle Area / NTSC Triangle Area ) x 100