Revision Ver 1.0 October 14, 1998

LM151X2

Liquid Crystal Display

Product Specification

4. Optical Specifications

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

minutes in a dark environment at 25 . The values specified are at an approximate distance 50cm from

the LCD surface at a viewing angle of

Φ and θ equal to 0° and aperture 1 degree. The test equipment is

PhotoResearch Prichard SpectroRadiometer Model 1980B-SC or equivalent. The input signal voltage and

Table 2 OPTICAL CHARACTERISTICS

Values

Parameter

Symbol

Min.

Typ.

Max.

Units

Notes

Contrast Ratio

Average Brightness, white

Brightness Variation

Response Time

Rise Time

Decay Time

CIE Color Coordinates

Red

Green

Blue

White

Viewing Angle by CR

≥ 10

x axis, right ( =0º)

x axis, left( =180º)

y axis, up( =90º)

y axis, down ( =270º)

Cross talk

Horizontal

Vertical

Gamma value

CR

Tr

200

170

-

-

-

0.600

0.310

0.270

0.570

0.110

0.070

0.290

0.310

55

55

40

40

-

-

-

250

200

-

50

20

30

0.630

0.340

0.300

0.600

0.140

0.100

0.320

0.340

60

60

45

45

-

-

-

-

-

30

80

30

50

0.660

0.370

0.330

0.630

0.170

0.130

0.350

0.370

-

-

-

-

1.5

1.5

-

cd/m

2

%

msec

degree,

%

1

2

3

4

5

6

7

Alpha Point Ltd.

P.O. Box 41

00751 Helsinki, Finland

http://www.alpha.fi

Tel.: +358-9-34 64 34 1

Fax: +358-9-34 64 34 2