Encore ENPUH-302 Manual de usuario descargar pdf (Pagina 19)

Product Specification

LC370EUN

Ver. 1.0

Table 11. GRAY SCALE SPECIFICATION

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

Surface Luminance with all white pixels

Contrast Ratio =

Surface Luminance with all black pixels

It is measured at center 1-point.

2. Surface luminance are determined after the unit has been ‘ON’ and 1 Hour after lighting the

backlight in a dark environment at 25±2°C. Surface luminance is the luminance value at center

1-point across the LCD surface 50cm from the surface with all pixels displaying white.

For more information see the FIG. 2.

3. The variation in surface luminance , δ WHITE is defined as :

δ WHITE(5P) = Maximum(L

on1

on2

, L

on3

, L

on4

, L

on5

) / Minimum(L

on1

on2

, L

on3

, L

on4

, L

on5

)

Where L

on1

to L

on5

are the luminance with all pixels displaying white at 5 locations .

For more information, see the FIG. 2.

4. Response time is the time required for the display to transit from any gray to white (Rise Time, Tr

)

and from any gray to black (Decay time, Tr

). For additional information see the FIG. 3.

※ G to G

Spec stands for average value of all measured points.

Photo Detector : RD-80S / Field : 2 °

5. G to G

is Variation of Gray to Gray response time composing a picture

G to G (σ) =

6. 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 module surface. For more information, see the FIG. 4.

7. Gray scale specification

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

Gray Level Luminance [%] (Typ)

L0 0.063

L15 0.27

L31 1.04

L47 2.49

L63 4.68

L79 7.66

L95 11.5

L111 16.1

L127 21.6

L143 28.1

L159 35.4

L175 43.7

L191 53.0

L207 63.2

L223 74.5

L239 86.7

L255 100

Σ(Xi- u)

Xi = Individual Data

u = Data average

N : The number of Data

√

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1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 36 37

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