ACX302 SONY [Sony Corporation], ACX302 Datasheet - Page 15

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

<Electro-optical Characteristics Measurement>
1. Contrast Ratio
Basic measurement conditions
(1) Driving voltage
(2) Measurement temperature
(3) Measurement point
(4) Measurement systems
(5) R, G and B input signal voltage Vsig
Contrast ratio (CR) is given by the following formula.
L (White): Surface luminance of the TFT-LCD panel at the input signal amplitude V
L (Black): Surface luminance of the panel at V
Both luminosities are measured by System I.
Measurement system I
Measurement system III
Measurement system II
CR = L (White)/L (Black)
HV
VVC = 5.5V, VCOM = 5.2V, Vpsig = 5.5 ± 2.5V
25°C unless otherwise specified.
One point in the center of the screen unless otherwise specified.
Three types of measurement systems are used as shown below.
Vsig = 5.5 ± V
DD
= 12.0V, VV
Drive Circuit
AC
Light receptor lens
[V] (V
3.5mm
DD
= 12.0V, VIH = 3.0V, VREF = 1.5V
Surface A
AC
LCD panel
: signal amplitude)
Source
Light
Source
Light
Surface A
Surface A
LCD panel
Optical fiber
Luminance
Meter
Optical fiber
AC
= 4.0V.
– 15 –
Spectroscope
Measurement
Equipment
Surface A: See the Package Outline.
Light Detector
AC
Measurement
= 0.5V.
Equipment
ACX302AK