Transcript PowerPoint 演示文稿 - Tianma Microelectronics

SFD – NEW TECHNOLOGY FOR NEXT GENERATION
PERSONAL DEVICE DISPLAYS
TECHNOLOGY OVERVIEW
July, 2004
TIANMA MICROELECTRONICS CO., LTD
Market background
Market
background:
For portable electronics application,
what are the requirements for
next generation color display?
1. Vivid color
2. Fast response time – for motion
picture play, camera preview
function, camcorder function
3. frame rate 5fps up to 30fps
4. Low cost – affordable for most
users
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Technology comparison
Comparison of mainstream display technology
(small – medium size)
Color gamut
contrast
brightness
VA
Power consumption
Response time
cost
CSTN
~40%
○ >50
○
○
○
◎ ~200ms
△
◎
TFT>=40%
◎ >100
◎
○
○
△ ~50ms
○
△
◎: excellent ○: good △: fair
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Technology background
TFT
Advantage:
~ best performance
Major drawback:
~ cost very high (panel +
IC cost 100% higher than
CSTN)
Color
STN
Advantage:
~ low cost
Major drawback:
~ response time slow
(>200ms means 5fps only!)
~ power consumption
high
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Technology background
Major limitation for CSTN to compete with TFT for
personal mobile application: slow response time
Vop
t (ms)
1. Driving signal
Optical
transmission
2. Optical response
tr ~ 150ms
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t (ms)
tf ~ 150ms
Tianma Microelectronics
Technology background
Traditional approaches to reduce the response time of CSTN:
- reduce cell gap
- Low viscosity LC material
Problems:
process cost and material availability.
Current limitation:
~100ms, not fast enough, too difficult for mass production
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Technology background
Our solution:
Tianma’s SFD (Super Fast Display) technology
Features: Improve the panel response time by innovative driving
technology
Without cost increase over regular STN
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Features of SFD technology
Technology key point:
New proprietary driving algorithm to “foresee” next
picture – to pre-drive the display
Result:
CSTN panel response time reduced by more than
50%.
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Tianma Microelectronics
Features of SFD technology
regular CSTN panel fast enough to play movie
 Achieve 20 – 30 fps display by CSTN panel
Little to no after image
Reduce flickering
Low power consumption
Remain high contrast and color saturation
Almost no cost increase over regular CSTN
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Demo products using SFD technology
Flying Dragon Series Color Displays
PART NUMBERING STRUCTURE
1. SFD product for movie playing
(FDxxx)
2. SFD product with CMOS camera
(FDxxxC, FDxxxM, FDxxxN)
(xxx is the code for display size)
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New product - movie playing LCM
1. FD185
Technology： SFD CSTN
Frame Rate： 30 fps
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Pixel Resolution： 128×RGB×160
Color： 65,536
Size：1.85 inch (A.A Diagonal)
Power Supply： 2.8~3.3V
Power Consumption：＜１ｍA
Application ： Cell
Media Player, etc.
Phone,
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Security,
Tianma Microelectronics
New product- movie playing LCM
2. FD150
 Technology： SFD CSTN
 Frame Rate： 25 fps
 Pixel Resolution： 128×RGB×128
 Color： 65,536
 Size：1.5 inch (A.A Diagonal)
 Power Supply： 2.8~3.3V
 Power Consumption：＜１mA
 Application：Cell Phone, Security, Media Player,
etc.
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New product- movie playing LCM
3. FD570
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Technology： SFD CSTN
Frame Rate： 20 fps
Pixel Resolution： 320×RGB×240
Color： 65,536
Size：5.7 inch (A.A Diagonal)
Power Supply： 2.8~3.3V
Power Consumption：＜20ｍA
Application ： information
Media Player, etc.
terminal,
Security,
LCD
(320 X RGB X 240)
RAM
Controller
I/O
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New product - SFD LCM w/ CMOS camera
4. FD185C
 Main display: same as FD185
 Sub display: 1.0”, 96x64 CSTN
 CMOS Sensor Resolution：652×488 =318,176
Pixels
 DSP：MV317SNK
 Image Processing：Automatic Exposure Control,
Automatic White Balance Control, Color
Correction,
Gamma
Correction,
Video
Acceleration BitBLT and Color Conversion,
Superimpose function with bitmap method in
preview capture, Image rotation,
 Zoom：5x (digital)
 Preview：Maximum Speed 30 fps ,
 Power Supply： 2.8~3.3V
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New product - SFD LCM w/ CMOS camera
5. FD150C
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Main display: same as FD150
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Sub display: 1.0”, 96x64 CSTN
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Sensor Resolution：652×488 =318,176
Pixels
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DSP：CLC346
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Image Processing：Automatic Exposure
Control, Automatic White Balance
Control, Color Correction, Gamma
Correction, Superimpose function, Image
rotation,
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Zoom：5x (digital)
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Preview：Maximum Speed 25 fps,
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Power Supply： 2.8~3.3V
LCD
LCD
(128 X RGB X 128)
(96 X RGB X 64)
Controller/Driver Controller/Driver
DSP
SPEAKER
RECEIVER
BACKLIGHT
MPU
I/O
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New product - SFD LCM w/ camera
6. FD150M
LCM: same as FD150C
A cell phone prototype for “A” customer
LCD
LCD
(128 X RGB X 128)
(96 X RGB X 64)
Controller/Driver
Controller/Driver
DSP
SPEAKER
RECEIVER
BACKLIGHT
MPU
I/O
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New product - SFD LCM w/ NTSC camera
7. FD185N
LCM: same as FD185
With a NTSC decoder, for real time monitoring
LCD
(128 X RGB X 160)
NTSC
Decoder board
Controller/Driver
I/O
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MPU
SPEAKER
RECEIVER
BACKLIGHT
Tianma Microelectronics
New product - SFD LCM w/ NTSC camera
8. FD570N
LCM: same as FD570
With a NTSC decoder, for real time monitoring
LCD
(320 X RGB X 240)
NTSC
Decoder board
RAM
Controller
I/O
Do not copy or distribute. Copyright ⓒ 2004 Tianma Microelectronics
Tianma Microelectronics