LM185WH2 datasheet(23/31 Pages) LG

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Product Specification

23 / 31

LM185WH2

Liquid Crystal Display

Ver. 1.0

JUN., 21, 2010

Notes :

8. Color grayscale linearity , Δu’v’ is defined as

Where indices A and B are the two gray levels found to have the largest color differences

between them.

i.e. get the largest Δu’ and Δv’ of each 6pairs of u’ and v’ and calculate Δu’v’ .

-Test pattern :

100% full white pattern with a test pattern as shown FIG.12

Squares of 40mm by 40mm in size, filled with 255, 225, 195, 165, 135 and 105

grayscale steps should be arranged in the center of the screen.

-Test method :

First 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 255 gray square into the center and measure both luminance and

u’ and v’ coordinates.

The same procedure shall then be repeated for gray steps 195, 165, 135 and 105.

)

(

)

(

−

FIG. 12 Color grayscale linearity

40mm

9. TCO Display 5.0 Compliance

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LM185WH2 Datasheet(PDF) 23 Page - LG Semicon Co.,Ltd.