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Product Specification
B121EW08 V0
Record of Revision
Version and Date Page
0.1 2007/08/13 All First Edition for Customer
Old description New Description Remark
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Product Specification
B121EW08 V0
1. Handling Precautions
1) Since front polarizer is easily damaged, pay attention not to scratch it.
2) Be sure to turn off power supply when inserting or disconnecting from input connector.
3) Wipe off water drop immediately. Long contact with water may cause discoloration or spots.
4) When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth.
5) Since the panel is made of glass, it may break or crack if dropped or bumped on hard surface.
6) Since CMOS LSI is used in this module, take care of static electricity and insure human earth when
handling.
7) Do not open nor modify the Module Assembly.
8) Do not press the reflector sheet at the back of the module to any directions.
9) In case if a Module has to be put back into the packing container slot after once it was taken out
from the container, do not press the center of the CCFL Reflector edge. Instead, press at the far
ends of the CFL Reflector edge softly. Otherwise the TFT Module may be damaged.
10) At the insertion or removal of the Signal Interface Connector, be sure not to rotate nor tilt the
Interface Connector of the TFT Module.
11) After installation of the TFT Module into an enclosure (Notebook PC Bezel, for example), do not
twist nor bend the TFT Module even momentary. At designing the enclosure, it should be taken into
consideration that no bending/twisting forces are applied to the TFT Module from outside.
Otherwise the TFT Module may be damaged.
12) Cold cathode fluorescent lamp in LCD contains a small amount of mercury. Please follow local ordinances
or regulations for disposal.
13) Small amount of materials having no flammability grade is used in the LCD module. The LCD module
should be supplied by power complied with requirements of Limited Power Source(, IEC60950 or UL1950),
or be applied exemption.
14) The LCD module is designed so that the CCFL in it is supplied by Limited Current Circuit(IEC60950 or
UL1950). Do not connect the CCFL in Hazardous Voltage Circuit.
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Product Specification
B121EW08 V0
2. General Description
B121EW08 V0 is a Color Active Matrix Liquid Crystal Display composed of a TFT LCD panel, a driver circuit,
and 2-CCFL backlight system. The screen format is intended to support the WXGA (1280(H) x 800(V)) screen
and 262k colors (RGB 6-bits data driver). All input signals are LVDS interface compatible.
2.1 General Specification
The following items are characteristics summary on the table at 25 ℃ condition:
Items Unit Specifications
Screen Diagonal [mm] 307.9 (12.1 W”)
Active Area [mm] 261.12 (H) x 163.2 (V)
Pixels H x V 1280x3(RGB) x 800
Pixel Pitch [mm] 0.204
Pixel Arrangement R.G.B. Vertical Stripe
Display Mode Normally White
White Luminance (ICCFL=6.0mA)
Note: ICCFL is lamp current
[cd/m2] 500 Typ. (5 points average)
425 Min. (5 points average)
(Note1)
Luminance Uniformity 1.25 max. (5 points)
Contrast Ratio 600:1 Typ.,500:1 Min.
Optical Rise Time/Fall Time [msec] 25 Typ., 35 Max.
Nominal Input Voltage VDD [Volt] +3.3 Typ.
Red x
Red y
Green x
Green y
Blue x
Blue y
White x
White y
CIE 1931
70
70
70
70
1.25 1
2.00 2
-
- 10 15
25 35
0.550 0.580 0.610
0.310 0.340 0.370
0.300 0.330 0.360
0.545 0.575 0.605
0.125 0.155 0.185
0.125 0.155 0.185
0.283 0.313 0.343
0.299 0.329 0.359
- 45 -
80
80
80
80
15
-
-
-
-
20
8
8
2,8
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Product Specification
= Maximum Brightness of thirteen points
Minimum Brightness of thirteen points
Maximum Brigh
tness of five points
= Minimum Brightness of five points
Note 1: 5 points position (Display area: 261.12 (H) x 163.2 (V) mm)
Note 2: 13 points position
H/4
H/4
H
H/4
H/4
B121EW08 V0
W
W/4W/4W/4W/4
12
3
45
W
W/4
10
10
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H/4
H/4
H
H/4
H/4
10
1
6
11
W/4
4
9
W/4
2
7
10
Note 3: The luminance uniformity of 5 and 13 points is defined by dividing the maximum luminance values by
the minimum test point luminance
δ
W5
W/4
10
3
5
8
1312
δ
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W13
Product Specification
Field=2
°
Contrast ratio (CR)=
Brightness on the “White” state
Brightness on the “Black” state
Note 4: Measurement method
The LCD module should be stabilized at given temperature for 30 minutes to avoid abrupt temperature change
during measuring. In order to stabilize the luminance, the measurement should be executed after lighting
Backlight for 30 minutes in a stable, windless and dark room.
B121EW08 V0
Photo detector
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Note 5: Definition of Average Luminance of White (YL):
Measure the luminance of gray level 63 at 5 points,Y
L (x) is corresponding to the luminance of the point X at Figure in Note (1).
Note 6: Definition of contrast ratio:
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= [L (1)+ L (2)+ L (3)+ L (4)+ L (5)] / 5
L
Contrast ratio is calculated with the following formula.
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Product Specification
"Black"
Tr
Tf "White"
"White"
0 % 10 % 90 % 100 %
Note 7: Definition of Cross Talk (CT)
CT = | YB – YA | / YA × 100 (%)
Where
YA = Luminance of measured location without gray level 0 pattern (cd/m2)
YB = Luminance of measured location with gray level 0 pattern (cd/m2)
B121EW08 V0
Note 8: Definition of response time:
The output signals of BM-7 or equivalent are measured when the input signals are changed from “Black” to
“White” (falling time) and from “White” to “Black” (rising time), respectively. The response time interval
between the 10% and 90% of amplitudes. Refer to figure as below.
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Product Specification
Note 9: Definition of viewing angle
Viewing angle is the measurement of contrast ratio ≧10, at the screen center, over a 180° horizontal and 180°
vertical range (off-normal viewing angles). The 180° viewing angle range is broken down as follows; 90° (θ)
horizontal left and right and 90° (Φ) vertical, high (up) and low (down). The measurement direction is typically
perpendicular to the display surface with the screen rotated about its center to develop the desired
measurement viewing angle.
B121EW08 V0
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Product Specification
RxIN0
B121EW08 V0
3. Functional Block Diagram
The following diagram shows the functional block of the 12.1 inches wide Color TFT/LCD Module.
X-Driver
(4 pairs LVDS)
RxIN1
RxIN2
RxCLKIN
LCD DRIVE
CARD
LCD
Controller
DC-DC
Converter
Ref circuit
Y-Driver
TFT ARRAY/CELL
1280(R/G/B) x 3
Backlight Unit
VDD
GND
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2 Lamp Connector
(2pin each)
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Product Specification
B121EW08 V0
4. Absolute Maximum Ratings
Absolute maximum ratings of the module are as following:
4.1 Absolute Ratings of TFT LCD Module
Item Symbol Min Max Unit Conditions
Logic/ LCD Drive
4.2 Absolute Ratings of Backlight Unit
Item Symbol Min Max Unit Conditions
CCFL Current ICCFL 5.0 6.0 [mA] rms Note 1,2
4.3 Absolute Ratings of Environment
Item Symbol Min Max Unit Conditions
Operating Temperature
Operation Humidity HOP 5 95 [%RH] Note 3
Storage Temperature
Storage Humidity HST
VDD 2.8 3.8 [Volt] Note 1,2
TOP 0 +50 [oC] Note 3
TST -20 +60 [oC] Note 3
5 95
[%RH]
Note 3
Note 1: At Ta (25℃ )
Note 2: Permanent damage to the device may occur if exceed maximum values
Note 3: For quality performance, please refer to AUO IIS(Incoming Inspection Standard).
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Twb=39° C
Operating RangeStorage Range
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Product Specification
90% 10%
B121EW08 V0
5. Electrical characteristics
5.1 TFT LCD Module
5.1.1 Power Specification
Input power specifications are as follows;
Symble Parameter Min Typ Max Units Note
VDD Logic/LCD Drive
Voltage
PDD VDD Power 0.9 1.1 [Watt] Note 1, 2
IDD IDD Current 270 370 [mA]
IRush Inrush Current
VDDrp Allowable
Logic/LCD Drive
Ripple Voltage
Note 1 : Maximum Measurement Condition:Black Pattern
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Product Specification
B121EW08 V0
5.1.2 Signal Electrical Characteristics
Input signals shall be low or High-impedance state when VDD is off.
Signal electrical characteristics are as follows;
Parameter Condition Min Max Unit
Vth
Vtl
Vcm
Note: LVDS Differential Voltage
Differential Input High
Threshold (Vcm=+1.2V)
Differential Input Low
Threshold (Vcm=+1.2V)
Differential Input Common
Mode Voltage
-100
1.125
100 [mV]
1.375
[mV]
[V]
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Product Specification
Note 2
B121EW08 V0
5.2 Backlight Unit
Parameter guideline for CCFL Inverter
Parameter Min Typ Max Units Condition
CCFL current each Lamp (I
CCFL Frequency(F
CCFL Startup Voltage(Vs)
CCFL Startup Voltage(Vs)
CCFL Voltage (Reference)
(V
)
CCFL
CCFL Power consumption
for 2 Lamp (P
CCFL
) 45 55 65 [KHz]
CCFL
)
) 5.0 5.5 6.0 [mA] rms
CCFL
1150 1400
920 1110
550
- - 7.8
Note 1: Typ are AUO recommended Design Points.
[Volt] rms
[Volt] rms
[Volt] rms
[Watt]
(Ta=25)℃
(Ta=25)℃
Note 3,4
(Ta= 0)℃
Note 5
(Ta= 25)℃
Note 5
(Ta=25)℃
Note 6
(Ta=25)℃
Note 6
*1 All of characteristics listed are measured under the condition using the AUO Test inverter.
*2 In case of using an inverter other than listed, it is recommended to check the inverter carefully.
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Sometimes, interfering noise stripes appear on the screen, and substandard luminance or flicker at low
power may happen.
*3 In designing an inverter, it is suggested to check safety circuit very carefully. Impedance of CCFL,
for instance, becomes more than 1 [M ohm] when CFL is damaged.
*4 Generally, CCFL has some amount of delay time after applying kick-off voltage. It is recommended
to keep on applying kick-off voltage for 1 [Sec] until discharge.
*5 CCFL discharge frequency must be carefully chosen so as not to produce interfering noise stripes on
the screen.
*6 Reducing CCFL current increases CCFL discharge voltage and generally increases CCFL discharge
frequency. So all the parameters of an inverter should be carefully designed so as not to produce too
much leakage current from high-voltage output of the inverter.
Note 2: It should be employed the inverter which has “Duty Dimming”, if ICCFL is less than 4mA.
Note 3: CCFL discharge frequency should be carefully determined to avoid interference between inverter and
TFT LCD.
Note 4: The frequency range will not affect to lamp life and reliability characteristics.
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Note 5: CCFL inverter voltage should be able to give out a power that has a generating capacity larger than
the lamp startup voltage, otherwise backlight may has blinking for a moment after turns on or can not
be turned on.
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Note 6: Calculator value for reference (ICCFL×VCCFL=PCCFL)
Note 7: Requirements for a system inverter design, which is intended to have a better display performance, a
better power efficiency and a more reliable lamp, are following.
It shall help increase the lamp lifetime and reduce leakage current.
a. The asymmetry rate of the inverter waveform should be less than 10%.
b. The distortion rate of the waveform should be within √2 ±10%.
* Inverter output waveform had better be more similar to ideal sine wave.
Note 8: It is an edge-type BLU with dual CCFL, the life-time define as the brightness decay to 50% of original
B121EW08 V0
value and under normal operation.
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Product Specification
R GB R GB R GB R GB R GB R GB 0 1
B121EW08 V0
6. Signal Characteristic
6.1 Pixel Format Image
Following figure shows the relationship of the input signals and LCD pixel format.
1st Line
R GB R GB
1278 1279
800th Line
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VSYNC (VS) Vertical Sync The signal is synchronized to -DTCLK .
HSYNC (HS) Horizontal Sync The signal is synchronized to -DTCLK .
Note: Output signals from any system shall be low or High-impedance state when VDD is off.
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Green Data 5 (MSB)
Green Data 4
Green Data 3
Green Data 2
Green Data 1
Green Data 0 (LSB)
(Green-pixel Data)
Blue Data 5 (MSB)
Blue Data 4
Blue Data 3
Blue Data 2
Blue Data 1
Blue Data 0 (LSB)
(Blue-pixel Data)
Data Clock
Display Timing
Green-pixel Data
Each green pixel's brightness data consists of these
6 bits pixel data.
Blue-pixel Data
Each blue pixel's brightness data consists of these 6
bits pixel data.
The typical frequency is 71.1 MHz. The signal is used
to strobe the pixel data and DSPTMG signals. All
pixel data shall be valid at the falling edge when the
DSPTMG signal is high.
This signal is stored at the falling edge of -DTCLK.
When the signal is high, the pixel data shall be valid
to be displayed.
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Product Specification
B121EW08 V0
6.3 Signal Description/Pin Assignment
LVDS is a differential signal technology for LCD interface and high speed data transfer device.
Pin Signal Name Description
1 GND Ground
2 VDD +3.3V Power Supply
3 VDD +3.3V Power Supply
4 V
5 NC No Connection (Bist Enable)
6 CLK
7 DATA
8 RxIN0- LVDS differential data input(R0-R5, G0)
9 RxIN0+ LVDS differential data input(R0-R5, G0)
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Product Specification
R R R
9
12
15 17 18 8
Note1: Start from right side
B121EW08 V0
Note2: Input signals shall be low or High-impedance state when VDD is off.
internal circuit of LVDS inputs are as following.
The module uses a 100ohm resistor between positive and negative data lines of each receiver input
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Signal Input
Pin No.
11
14
RxIN0-
RxIN0+
RxIN1-
RxIN1+
RxIN2-
RxIN2+
RxCLKIN-
RxCLKIN+
R
LVDS Receiver
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Product Specification
B121EW08 V0
6.4 Interface Timing
6.4.1 Timing Characteristics
Basically, interface timings should match the 1280x800 /60Hz manufacturing guide line timing.
Parameter Symbol Min. Typ. Max. Unit
Frame Rate - 50 60 - Hz
Clock frequency 1/ T
Period T
Vertical
Active T
Section
Blanking T
Period T
Horizontal
Active T
Section
Blanking T
62 68
Clock
V
VD
VB
H
HD
HB
803 816 832
800 800 800
3 16 32
1302 1408 1700
1280 1280 1280
22 2 420
72
MHz
T
Line
T
Clock
End-frame checking period tEF 2 T
DE checking period tDE 6400 T
Note : DE mode only
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6.4.2 Timing diagram
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T
CLOCK
DOTCLK
Input
Data
Invaild
Data
DE
T
DE
HB
Input Timing Definition ( DE Mode)
Pixel1Pixel2Pixel3Pixel
T
HD
T
H
T
VB
T
V
N-1
T
VD
Pixel
N
Invaild
Data
Pixel
1
Line
Line
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Product Specification
T3 T2
T1
T7
B121EW08 V0
6.5 Power ON/OFF Sequence
VDD power and lamp on/off sequence is as follows. Interface signals are also shown in the chart. Signals from
any system shall be Hi-Z state or low level when VDD is off.
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Product Specification
B121EW08 V0
7. Connector Description
Physical interface is described as for the connector on module.
These connectors are capable of accommodating the following signals and will be following components.
7.1 TFT LCD Module
Connector Name / Designation For Signal Connector (LVDS)
Manufacturer Hirose
Type / Part Number DF19LA-20P-1H
Mating Housing/Part Number DF19G-20S-1C or compatible
7.2 Backlight Unit
Physical interface is described as for the connector on module.
These connectors are capable of accommodating the following signals and will be following components.
Connector Name / Designation For Lamp Connector
Manufacturer JST
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Type / Part Number BHSR-02VS-1
Mating Type / Part Number SM02B-BHSS-1-TB
Since B121EW08 is a dual-CCFL model, there will be 2 connectors for CCFL, each a high voltage end and a
low voltage end.
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Pin # Cable color Signal Name
1 Red/ Blue Lamp High Voltage
2 White Lamp Low Voltage
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Product Specification
B121EW08 V0
8. Vibration and Shock Test
8.1 Vibration Test
Test Spec:
l Test method: Non-Operation
l Acceleration: 1.5G , sine wave
l Frequency: 10 - 500Hz Random
l Sweep: 0.5 octave/minute in each of three mutually perpendicular axes.
8.2 Shock Test Spec:
Test Spec:
l Test method: Non-Operation
l Acceleration: 220 G , Half sine wave
l Active time: 2 ms
l Pulse: Half sine wave
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Product Specification
B121EW08 V0
9. Reliability
Subject Description
Operating High Temperature
Operating Low Temperature
Storage High Temperature
Storage Low Temperature
High Temp &High Humidity
Temperature Cycling
Non-Operating
+50℃ ,Dynamic ,250hr ,Humity 20%
0℃ ,Dynamic ,250hr ,Humity 20%
+65℃ ,Non_Operating ,250hr ,Humity 20%
-20℃ ,Non_Operating ,250hr
+40℃ ,Dynamic ,Humidity 95% ,250hr
-40℃ to +65℃ ,Ramp< 20℃ /min, Duration at Temp. = 30
min,
Test Cycles =50
Altitude
MTBF 200K hrs
Storage Shock
Storage Vibration
ESD
Note1:
Self-recoverable. No hardware failures.
Note2:
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According to EN61000-4-2 , ESD class B: Some performance degradation allowed. No data lost.
MTBF (Excluding the CCFL): 30,000 hours with a confidence level 90%.
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Product Specification
10. Mechanical Characteristics
10.1 LCM Outline Dimension
B121EW08 V0
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B121EW08 V0
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Product Specification
0AXXG
35 mm
90 mm
B121EW08 V0
11. Shipping and Package
11.1 Shipping Label Format
AUO LCD S/N Label: This label records the model name, firmware/ hardware version, manufacture date, and
serial number of the LCD in AUO.
Manufactured 05/52
Model No:
B121EW08
AU Optronics
MADE IN TAIWAN (M1)
H/W: 0A F/W:1
V0
CUS
E204356
Pb
RoHS
11.2. Carton package
The outside dimension of carton is 423(L)mm* 374(W)mm* 335(H)mm, carton and cushion weight are 1800g.
Maximum quantity of each carton is 15 pcs of LCD.
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Product Specification
11.3 Shipping package of palletizing
B121EW08 V0
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Product Specification
B121EW08 V0
12. Appendix: EDID description
TBD
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