LCX020 Просмотр технического описания (PDF) - Sony Semiconductor
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LCX020 Datasheet PDF : 24 Pages
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LCX020BK
2. Optical Transmittance
Optical Transmittance (T) is given by the following formula (2).
T=
L (White)
× 100 [%] ... (2)
Luminance of Back Light
L (White) is the same expression as defined in the "Contrast Ratio" section.
Optical transmittance is measured by System I.
3. Chromaticity
Chromaticity of the panel is measured by System I. Raster modes of each color are defined by the
representations at the input signal amplitude conditions shown in the table below. System I uses x and y of
the CIE standards as the chromaticity here.
Signal amplitudes (VAC) supplied to each input
R input
G input
B input
R
0.5
4.5
4.5
G
4.5
0.5
4.5
B
4.5
4.5
0.5
(Unit: V)
4. V-T Characteristics
V-T characteristics, or the relationship between signal
amplitude and the transmittance of the panel, are
measured by System II by inputting the same signal
amplitude VAC to each input pin. V90, V50, and V10
correspond to each voltage which defines 90%, 50%,
and 10% of transmittance respectively.
5. Half Tone Color Reproduction Range
The half tone color reproduction range of the LCD
panel is characterized by the differences between the
V-T characteristics of R, G and B. The differences of
these V-T characteristics are measured by System II.
System II defines signal voltages of each R, G and B
raster mode which correspond to 50% of transmittance,
V50R, V50G and V50B respectively. V50RG and V50BG
represent the differences between V50R and V50G and
between V50B and V50G, and are given by the following
formulas (3) and (4) respectively.
V50RG = V50R – V50G ... (3)
V50BG = V50B – V50G ... (4)
– 13 –
90
50
10
V90 V50 V10
VAC – Signal amplitude [V]
100
50
R raster
V50RG
V50BG
G raster
B raster
0
V50R V50B
V50G
VAC – Signal amplitude [V]
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