Product Specification

LP140WF1

Liquid Crystal Display

Ver. 1.0

Oct. 02. 2013

Note)

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 average of 5 point across the LCD surface 50cm from the surface with

all pixels displaying white. For more information see FIG 1.

LWH = Average(

L1,L2, … L5)

3. The variation in surface luminance , The panel total variation (

 WHITE) is determined by measuring LN

at each test position 1 through 13 and then defined as following numerical formula.

For more information see FIG 2.

 WHITE = Maximum(L1,L2, … L13) / Minimum(L1,L2, … L13)

4. Response time is the time required for the display to transition from white to black (rise time, TrR) and

from black to white (Decay Time, TrD). 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

* fV = 60Hz

Gray Level

Luminance [%] (Typ)

L0

0.13

L7

0.70

L15

4.53

L23

10.80

L31

20.30

L39

33.00

L47

49.00

L55

73.00

L63

100.00

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