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D
3. Electrical Characteristics
The T370HW02 V3 requires two power inputs. One is employed to power the LCD electronics and to drive the
TFT array and liquid crystal. The second input power for the BLU, is to power inverter.
3-1 Electrical Characteristics (Ta=25±±±±2oC)
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Power Supply Input Voltage Vcc 10.8 12.0 13.2 Vdc
Power Supply Input Current Icc 1
Power Consumption Pc - 12 14.4 Watt [1]
LV DS
Interface
Interface
Inrush Current I
ifferential Input High
Threshold Voltage
Differential Input Low
Threshold Voltage
Common Input Voltage
Input High Threshold Voltage
Input Low Threshold Voltage
V
VIL (Low) 0 0.9 Vdc
- 4 Apeak [2]
RUSH
VTH 100 mV [3]
V
-100 mV [3]
TL
V
1.1 1.25 1.4 V
ICM
(High) 2.4 3.3 Vdc CMOS
IH
Note:
1. The ripple voltage should be controlled under 10% of Vcc
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3-3 Input Signal Timing Specifications:
This is the signal timing required at the input of the User connector. All of the interface signal timing should be
satisfied with the following specifications for it’s proper operation.
Timing Table (DE only Mode)
1.) Di splay position is specific by the rise of DE signal only.
Horizontal display position is specified by the falling edge of 1
displayed on the left edge of the screen.
Vertical display position is specified by the rise of DE after a “Low” level period equivalent to eight times of
horizontal period. The 1
top line of screen.
3.) If a period of DEB “High” is less than 1920 DCLK or less than 1080 lines, the rest of the screen displays
black.
4.) The display position does not fit to the screen if a period of DE “High” and the effective data period do not
synchronize with each other.
st
data corresponding to one horizontal line after the rise the of ENAB is displayed at the
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3-5 Color Input Data Assignment
The brightness of each primary color (red, green and blue) is based on the 8 bit gray scale data
color; the higher the binary input, the brighter the color. The table below provides a reference for color versus
data input.
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3-6 Power Sequence of LCD Module (ON/OFF)
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90%
10%
t5t6t7
Units
Min.
us
ms
ms
ms
ms
ms
s
Power Supply for LCD
Signal
Backlight
T1
T2
T3
T4
T5
T6-
T7
90%
10%
t1t2
Valid Data
t3t4
Lamp ON
Va lu es Parameter
Min.Typ.
470-5000
20-50
500-200--
5--
-30
1--
Note:
The timing controller will not be damaged in case of TV set AC input power suddenly shut down.
Once power reset, it should follow power sequence as spec. definition.
(1) Apply the lamp voltage within the LCD operation range. When the back-light turns on before the LCD
operation or the LCD turns off before the back-light turns off, the display may momentarily become
abnormal screen.
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4. Optical Specification
Optical characteristics are determined after the unit has been ‘ON’ and stable for approximately 45 minutes in a
dark environment at 25 . The values specified are at an approximate distance 50cm from the LCD surface at a
viewing angle of ĭ and șequal to 0°.
IEC 950: 1991+A1: 1992+A2: 1993+C3: 1995+A4:1996
European Committee for Electrotechnical Standardization (CENELEC)
EUROPEAN STANDARD for Safety of Information Technology Equipment Including
Electrical Business Equipment.
7-2 EMC
a) ANSI C63.4 “Methods of Measurement of Radio-Noise Emissions from Low-Voltage
Electrical and Electrical Equipment in the Range of 9kHz to 40GHz. “American National
standards Institute(ANSI), 1992
b) C.I.S.P.R “Limits and Methods of Measurement of Radio Interface Characteristics of
Information Technology Equipment.” International Special committee on Radio
Interference.
c) EN 55022 “Limits and Methods of Measurement of Radio Interface Characteristics of
Information Technology Equipment.” European Committee for Electrotechnical
Standardization. (CENELEC), 1998
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9. PRECAUTIONS
Please pay attention to the followings when you use this TFT LCD module.
9-1 MOUNTING PRECAUTIONS
(1) You must mount a module using holes arranged in four corners or four sides.
(2) You should consider the mounting structure so that uneven force (ex. Twisted stress) is not
applied to module. And the case on which a module is mounted should have sufficient strength
so that external force is not transmitted directly to the module.
(3) Please attach the surface transparent protective plate to the surface in order to protect the
polarizer. Transparent protective plate should have sufficient strength in order to the resist
external force.
(4) You should adopt radiation structure to satisfy the temperature specification.
(5) Acetic acid type and chlorine type materials for the cover case are not desirable because the
former generates corrosive gas of attacking the polarizer at high temperature and the latter
causes circuit break by electro-chemical reaction.
(6) Do not touch, push or rub the exposed polarizer with glass, tweezers or anything harder than
HB pencil lead. And please do not rub with dust clothes with chemical treatment. Do not touch
the surface of polarizer for bare hand or greasy cloth. (Some cosmetics are detrimental to the
polarizer.)
(7) When the surface becomes dusty, please wipe gently with absorbent cotton or other soft
materials like chamois soaks with petroleum benzene. Normal-hexane is recommended for
cleaning the adhesives used to attach front/ rear polarizer. Do not use acetone, toluene and
alcohol because they cause chemical damage to the polarizer.
(8) Wipe off saliva or water drops as soon as possible. Their long time contact with polarizer
causes deformations and color fading.
(9) Do not open the case because inside circuits do not have sufficient strength.
9-2 OPERATING PRECAUTIONS
(1) The device listed in the product specification sheets was designed and manufactured for TV
application
(2) The spike noise causes the mis-operation of circuits. It should be lower than following voltage:
V=
200mV(Over and under shoot voltage)
(3) Response time depends on the temperature. (In lower temperature, it becomes longer..)
(4) Brightness of CCFL depends on the temperature. (In lower temperature, it becomes lower.) And
in lower temperature, response time (required time that brightness is stable after turned on)
becomes longer.
(5) Be careful for condensation at sudden temperature change. Condensation makes damage to
polarizer or electrical contacted parts. And after fading condensation, smear or spot will occur.
(6) When fixed patterns are displayed for a long time, remnant image is likely to occur.
(7) Module has high frequency circuits. Sufficient suppression to the electromagnetic interference
shall be done by system manufacturers. Grounding and shielding methods may be important to
minimize the interface.
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9-3 ELECTROSTATIC DISCHARGE CONTROL
Since a module is composed of electronic circuits, it is not strong to electrostatic discharge. Make certain that
treatment persons are connected to ground through wristband etc. And don’t touch interface pin directly.
9-4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE
Strong light exposure causes degradation of polarizer and color filter.
9-5 STORAGE
When storing modules as spares for a long time, the following precautions are necessary.
(1) Store them in a dark place. Do not expose the module to sunlight or fluorescent light. Keep the
temperature between 5
(2) The polarizer surface should not come in contact with any other object. It is recommended that they
be stored in the container in which they were shipped.
9-6 HANDLING PRECAUTIONS FOR PROTECTION FILM
(1) The protection film is attached to the bezel with a small masking tape. When the protection film is
peeled off, static electricity is generated between the film and polarizer. This should be peeled off
slowly and carefully by people who are electrically grounded and with well ion-blown equipment or
in such a condition, etc.
(2) When the module with protection film attached is stored for a long time, sometimes there remains a
very small amount of flue still on the Bezel after the protection film is peeled off.
(3) You can remove the glue easily. When the glue remains on the Bezel or its vestige is recognized,
please wipe them off with absorbent cotton waste or other soft material like chamois soaked with
normal-hexane.