Product Specification

LP140WH4

Liquid Crystal Display

Ver. 1.1

Dec. 17, 2010

14 / 32

4. Optical Specification

FIG. 1 Optical Characteristic Measurement Equipment and Method

Table 9. OPTICAL CHARACTERISTICS

Ta=25

Parameter

Symbol

Values

Units

Notes

Min

Typ

Max

Contrast Ratio

CR

400

-

-

1

Surface Luminance, white

L

WH

170

200

-

2

Luminance Variation

δ

WHITE_5P

70

-

-

%

3

δ

WHITE_13P

60

70

-

%

Response Time

Tr

-

16

-

ms

4

Color Coordinates

RED

RX

0.554

0.584

0.614

RY

0.316

0.346

0.376

GREEN

GX

0.308

0.338

0.368

GY

0.523

0.553

0.583

BLUE

BX

0.128

0.158

0.188

BY

0.094

0.124

0.154

WHITE

WX

0.283

0.313

0.343

WY

0.299

0.329

0.359

Viewing Angle

5

x axis, right(

Φ=0°)

Θr

40

45

-

degree

x axis, left (

Φ=180°)

Θl

40

45

-

degree

y axis, up (

Φ=90°)

Θu

10

15

-

degree

y axis, down

(

Φ=270°)

Θd

30

35

-

degree

Gray Scale

6

LCD Module

Optical Stage(x,y)

Pritchard 880 or

equivalent

50cm

Optical characteristics are determined after the unit has been ‘ON’ and stable for approximately 30 minutes in

a dark environment at 25

at a viewing angle of

FIG. 1 presents additional information concerning the measurement equipment and method.

Table 7. OPTICAL CHARACTERISTICS