ACX302 SONY [Sony Corporation], ACX302 Datasheet - Page 17

• Manufacturer Part Number: ACX302
• Description: 8.80cm (3.5 Type) NTSC/PAL Color LCD Panel
• Manufacturer: SONY [Sony Corporation]

6. Response Time
7. Flicker
8. Image Retention Time
Response times ton and toff are measured
by System II by applying the input signal
voltages in the figure to the right to each
input pin. These times are defined by the
following formulas.
The relationships between t1, t2, tON and
tOFF are shown in the figure to the right.
Flicker (F) is given by the following formula. DC and AC components (NTSC: 30Hz, rms; PAL: 25Hz, rms)
of the panel output signal for gray raster* mode are measured by a DC voltmeter and a spectrum analyzer
in System II.
Image retention time is given by the following procedures.
Apply the monoscope pattern to the LCD panel for 1 minute and then change to a gray scale signal
(Vsig = 5.5 ± V
measure the time for the residual image to disappear.
R, G, B input signal voltage for gray raster mode is given by Vsig = 5.5 ± V
where: V
Monoscope pattern input conditions
Vsig = 5.5 ± 4.0 or 5.5 ± 2.0 [V]
(shown in the figure to the right)
Vcom = 5.20V
ton = t1 – tON
toff = t2 – tOFF
t1: time which gives 10% transmittance
t2: time which gives 90% transmittance
F (dB) = 20 log {AC component/DC component}
of the panel.
of the panel.
50
is the signal amplitude which gives 50% of transmittance in V-T curve.
AC
(V); V
AC
= 3 to 4V). Judging by sight at the V
5.5V
5.5V
0V
0V
4.0V
– 17 –
4.0V
Optical transmittance output
waveform
Input signal voltage (Waveform applied to measured pixels)
0.5V
Vsig waveform
2.0V
100%
90%
10%
AC
0%
that holds the maximum image retention,
2.0V
White level
Black level
50
4.0V
tON
(V)
ton
t1
tOFF t2
toff
ACX302AK