LP173WF4 datasheet(14/31 Pages) LG

14 / 31 page

Product Specification

LP173WF4

Liquid Crystal Display

Ver. 0.0

Oct. 15, 2013

14 / 31

Note)

1. It should be measured in the center of screen. 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.

WH = Average(L1,L2, … L5)

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

WHITE) is determined by measuring L

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

For more information see FIG 2.

Maximum(L

1,L2, … L13)



WHITE =

Minimum(L

1,L2, … L13)

4. Response time is the time required for the display to transition from white 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.

LP173WF4 Datasheet(PDF) 14 Page - LG Semicon Co.,Ltd.