Product Specification

LB170E01-SL01

Liquid Crystal Display

Notes 1. Contrast Ratio(CR) is defined mathematically as :

(By PR880)

It is measured at center point(Location P1)

from the surface with all pixels displaying white. For more information see FIG.8 (By PR880)

Where L1 to L9 are the luminance with all pixels displaying white at 9 locations.

For more information see FIG.8

4. Color shift is the angle at which the average color difference for all Macbeth is lower than 0.02.

For more information see FIG.9

(By EZ Contrast)

- Color difference (∆u’v’)

4

'

+

+

−

=

x

u

9

'

+

+

−

=

y

v

2

2

)

'

'

(

)

'

'

(

'

'

v

v

u

u

v

u

−

+

−

=

∆

pixels

black

all

with

Luminance

Surface

pixels

white

all

with

Luminance

Surface

Ratio

Contrast

=

)

L

....

,

L

,

(L

Minimum

)

L

..

,

L

,

Maximum(L

P9

P2

P1

P9

P2

P1

…

=

WHITE

δ

Ver. 1.0

Dec. 16. 2013

19 / 31

u’1, v’1 : u’v’ value at viewing angle direction

u’2, v’2 : u’v’ value at front (θ=0)

i : Macbeth chart number (Define 23 page)

- Pattern size : 25% Box size

- Viewing angle direction of color shift : Horizontal, Vertical

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.10

(By PR880)

6. GSR is the rate of gamma shift at up, down, left and right 60 degree viewing angle compare with

center gamma. For more information see FIG.11 and FIG.12

(By EZ Contrast)

.

7. Gamma Value is approximately 2.2. For more information see Table 11.

3

12

2

'

+

+

−

=

y

x

u

3

12

2

'

+

+

−

=

y

x

v

2

2

1

2

2

1

)

'

'

(

)

'

'

(

'

'

v

v

u

u

v

u

−

+

−

=

∆

24

)

'

'

(

)

'

'

(

24

1

∑

=

∆

=

∆

i

i

v

u

v

u

Avg

100

Degree)

(0

Value

Gamma

Center

Degree)

60

Light

Reft,

Down,

(Up,

Value

Gamma

angle

View

1

×













−

=

GSR