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2.7-Type Wide-Screen (16:9) Color Transmissive LCD Panel for Camcorders
Features 4:3 Display Mode Switching Function
ACX340AK/ACX347AK
Full-scale operation of terrestrial digital broadcasting will start in 2006 and
the switchover from the conventional 4:3 aspect ratio to the wide-screen
16:9 aspect ratio in consumer homes is progressing rapidly.
Since we expect rapid market penetration of camcorders that include a
wide-screen LCD panel for wide-screen TV users, Sony has created a product
line of 16:9 wide-screen LCD panels.
The ACX340AK and ACX347AK 2.7-type wide-screen color LCDs of this
release, in addition to featuring high picture quality and low power consumption,
also include a 4:3 display mode switching function to make end
product design easier. |
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ACX340AK/ACX347AK |
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* Low-temperature polycrystalline
silicon LCDs
* 16:9 wide-screen aspect ratio
panels
* 4:3 aspect ratio switching function
* Low power consumption
* Wide viewing angle (ACX340AK) |
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2.7-Type 16:9 Wide-Screen
Panel |
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Sony is now expanding their product line
of 2.7-type panels with these transmissive
16:9 wide-screen panels.
The ACX340AK is a 211K-dot wide viewing
angle panel for high-end models, and
the ACX347AK is a 123K-dot panel for
popularly priced models. Both of these
panels are based on Sony’s unique low-temperature
polycrystalline silicon TFT
and process technologies and achieve
high-performance specifications. (See
table 1.)
By adding 16:9 panels to Sony’s already
extensive lineup of 4:3 panels, Sony can respond even more flexibly to our customers’
end product design needs.
Sony will
be expanding the lineup even further with
3.0-type and 3.5-type panels in the future.
(See figure 2.) |
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4:3 Aspect Ratio Switching
Function |
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Both the ACX340AK and ACX347AK
include a 4:3 aspect ratio display function.
By using the CXM3017 driver IC drive
timing in conjunction with the panel’s circuit
structure, applications can display the
areas at the left and right side of the screen
as black and display a 4:3 image in the
compressed center portion of the screen.
This allows applications to switch the
display easily by controlling the high/low
level state of a 16:9/4:3 display switching
signal. Thus this function can be implemented
in end products with minimal
burden on the end product design. (See
figure 3.) |
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Low Power Consumption |
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These LCD panels achieve a significant
reduction in power consumption by
switching from the conventional COMDC
drive to COMAC drive, which allows the
supply voltage to be reduced from 12 V
to 8.5 V. |
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Wide Viewing Angle Technology
(ACX340AK) |
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The ACX340AK is Sony’s first transmissive
panel that uses Sony’s unique wide
viewing angle technology. Compared to
conventional transmissive panels, this
panel exhibits almost no color inversions
and can be viewed from almost any angle.
In addition, compared to the wide viewing
angle technology, this panel’s other
technical aspects, such as the transmittance,
power consumption, and response
characteristics, form a well balanced set,
making this device optimal for high-end
models. (See figure 4.) |
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•••• Mr. SHIMIZU••••
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Have you ever taken a video with
a camcorder and then viewed it on
a wide-screen TV, only to see your
subjects look strangely over-weight?
From now on, camcorders
must also support wide-screen
displays. Despite being a 16:9 aspect
ratio wide-screen display,
this device allows a large screen
to be included even in miniature
end products.
I strongly urge you to consider
adopting Sony 16:9 wide-screen
panels in addition to conventional
4:3 panels. |
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See
all articles with figures and tables.  |
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Vol.41 |
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