LM170E01
Liquid Crystal Display
Product Specification
Notes :
1. Contrast ratio(CR) is defined mathematically as :
Surface luminance with all white pixels
Contrast ratio =
Surface luminance with all black pixels
2. Surface luminance is the center point across the LCD surface 50cm from the surface with all
pixels displaying white. For more information see [ Figure 10 ].
When IBL=6.5mA, LWH=200cd/m2(Min.) 250cd/m2(Typ.)
3. The uniformity in surface luminance ,
is determined by measuring LON at any point in test area.
But the management of is determined by measuring Lon at each test position 1 through 9,
and then dividing the maximum LON of 9 points luminance by minimum LON of 9 points luminance.
For more information see [ Figure 10 ].
= Minimum (LON1,LON2, ….. LON9) ÷ Maximum (LON1,LON2, ….. LON9
)
100 (%)
4. Response time is the time required for the display to transition from white to black(Rise Time, TrR)
and from black to white(Decay Time, TrD). For additional information see [ Figure 11 ].
The sampling rate is 2,500 sample/sec.
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 Figure 12 .
6. Gray scale specification
Table 10. Gray scale
Luminance(%)
Gray level
(Typ.)
L0
0.16
1.19
5.04
12.1
22.5
39.3
62.1
86.0
100
L31
L63
L95
L127
L159
L191
L223
L255
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Ver 1.0
Mar. 28, 2005
LG [ LG SEMICON CO.,LTD. ]
