9PRECAUTIONS
9-1MOUNTING PRECAUTIONS
9-2OPERATING PRECAUTIONS
9-3ELECTROSTATIC DISCHARGE CONTROL
9-4PRECAUTIONS FOR STRONG LIGHT EXPOSURE
9-5STORAGE
9-6HANDLING PRECAUTIONS FOR PROTECTION FILM
9-7APPROPRIATE CONDITION FOR PUBLIC DISPLAY
The LD470DUN is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED)
Local Block backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive display type which is operating in the normally black mode. It has a 54.64 inch diagonally
measured active display area with WUXGA resolution (1080 vertical by 1920 horizontal pixel array).
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arrayed in vertical stripes.
Gray scale or the luminance of the sub-pixel color is determined with a 10-bit gray scale signal for each dot.
Therefore, it can present a palette of more than 1.06Bilion colors.
It has been designed to apply the 10-bit 2-port LVDS interface.
It is intended to support Public Display where high brightness, super wide viewing angle, high color gamut,
high color depth and fast response time are important.
Mini-LVDS(RGB)
ControlSignals
Power Signals
Source Driver Circuit
S1S1920
G1
GateDriverCircuit
TFT - LCD Panel
(1920 × RGB × 1080 pixels)
[Gate In Panel]
G1080
V : 10Block
H : 8 Block
LVDS
LVDS 1,2
2Port
LVDS Select
+12.0V
+24.0V, GND, On/offExt VBR-B
CN1
(51pin)
EEPROM
SCL
SDA
Timing Controller
[LVDS Rx]
+ Local Dimming
Power Circuit
Block
LED Driver
General Features
Active Screen Size46.96 inches(1192.87mm) diagonal
Outline Dimension1044.9(H) x 590.0(V) x 52.5mm(D) (Typ.)
Pixel Pitch0.5415(H) X 0.5415(V)
Pixel Format1920 horiz. by 1080 vert. Pixels, RGB stripe arrangement
1. Ambient temperature condition (Ta = 25 2 °C )
2. Temperature and relative humidity range are shown in the figure below. Wet bulb temperature should be Max 39°C, and no condensation of water.
3. Gravity mura can be guaranteed below 40°C condition.
4. The maximum operating temperatures is based on the test condition that the surface temperatureof display area is less than or equal to 68°C with LCD module alone in a temperature controlled chamber.Thermal management should be considered in final product design to prevent the surface temperature ofdisplay area from being over 68℃. The range of operating temperature may be degraded in case ofimproper thermal management in final product design.
It requires two power inputs. One is employed to power for the LCD circuit. The other Is used for the LED
backlight and LED Driver circuit.
Table 2. ELECTRICAL CHARACTERISTICS
ParameterSymbol
UnitNote
MinTypMax
Circuit :
Value
Power Input VoltageV
Power Input CurrentI
Power ConsumptionP Rush currentI
LCD
LCD
LCD
RUSH
Notes: 1. The specified current and power consumption are under the V
10.812.013.2
-9141188
-12011561
-10.914.17
--5
=12.0V, 25 2°C, fV=60Hz
LCD
V
DC
mA1mA2
Watt1
A3
condition whereas mosaic pattern(8 x 6) is displayed and fV is the frame frequency.
2. The current is specified at maximum current pattern.
3. The duration of rush current is about 2ms and rising time of power input is 0.5ms (min.).
4. Ripple voltage level is recommended under ±5% of typical voltage
Ver. 0.2
White : 1023GrayBlack : 0Gray
Mosaic Pattern(8 x 6)
6 / 29
Product Specification
Table 3. ELECTRICAL CHARACTERISTICS (Continue)
LD470DUN
ParameterSymbol
LED Driver :
Power Supply Input VoltageVBL22.824.025.2Vdc1
Power Supply Input Current IBL-3.25
Power Supply Input Current (In-Rush)Inrush--
Power ConsumptionPBL-
On/Off
Brightness AdjustExtVBR-B1-100%On Duty, 6
Input Voltage for
Control System
Signals
LED : Life Time50,00060,000Hrs2
PWM Frequency for NTSC & PAL
Pulse Duty Level(PWM)
VSYNC, SIN, SCLK , Reverse
(Local Dimming)
OnV on2.5-3.6 VdcOffV off-0.30.00.7Vdc
PAL100Hz3
NTSC120Hz3
High Level2.5-3.6
Low Level0.0-0.7
High Level2.73.33.6
Low Level-0.30.00.4
MinTypMax
Values
7890
3.75
4.73
UnitNotes
AExt VBR-B = 100%
VBL = 22.8V
A
Ext VBR-B= 100%
WExt VBR-B= 100%
VdcVdcVdcVdc
HIGH : on duty
LOW : off duty
4
Notes :
1. Electrical characteristics are determined after the unit has been ‘ON’ and stable for approximately 60minutes at 25±2°C. The specified current and power consumption are under the typical supply Input voltage24Vand VBR (ExtVBR-B: 100%), it is total power consumption.
2. The life time (MTTF) is determined as the time which luminance of the LED is 50% compared to that of initial value at the typical LED current (ExtVBR-B :100%) on condition of continuous operating in LCM state at
25±2°C.
3. LGD recommend that the PWM freq. is synchronized with Two times harmonic of V_sync signal of system.
Though PWM frequency is over 120Hz (max 252Hz), function of LED Driver is not affected.
4. The duration of rush current is about 200ms. This duration is applied to LED on time.
5. Even though inrush current is over the specified value, there is no problem if I2T spec of fuse is satisfied.
6. Ext_PWM Signal have to input available duty range.
Between 99% and 100% ExtVBR-B duty have to be avoided. ( 99% < ExtVBR-B < 100%)
But ExtVBR-B 0% and 100% is possible.
High
Available duty range
Low
0%1%99% 100%Ext_PWM Input Duty
Ver. 0.2
7 / 29
LD470DUN
Product Specification
3-2. Interface Connections
This LCD module employs two kinds of interface connection, a 51-pin connector is used for the module
electronics and Master 14-pin and Slave 12-pin connectors are used for the integral backlight system.
3-2-1. LCD Module
- LCD Connector(CN1): FI-RE51S-HF or Equivalent, Refer to below table.
- Mating Connector : FI-RE51HL
Table 4. MODULE CONNECTOR(CN1) PIN CONFIGURATION
NoSymbolDescription NoSymbolDescription
1GND234567
89
10
11GND
12RO0N
13RO0P
14RO1N
15
16RO2N
17RO2P
18GND
19ROCLKN
20
21GND
22RO3N
23RO3P
24RO4N
25RO4P
26
NCNo ConnectionNCNo ConnectionNCNo Connection (Reserved for LGD)NCNo Connection (Reserved for LGD)NCNo Connection (Reserved for LGD)
LVDS Select
NCNo ConnectionNCNo Connection
Local Dimming‘H’ =Enable only
RO1P
ROCLKP
NC
Ground
‘H’ =JEIDA , ‘L’ = VESA
GroundFIRST LVDS Receiver Signal (A-)
FIRST LVDS Receiver Signal (A+)FIRST LVDS Receiver Signal (B-)FIRST LVDS Receiver Signal (B+)FIRST LVDS Receiver Signal (C-)FIRST LVDS Receiver Signal (C+)
GroundFIRST LVDS Receiver Clock Signal(-)
FIRST LVDS Receiver Clock Signal(+)Ground
FIRST LVDS Receiver Signal (D-)FIRST LVDS Receiver Signal (D+)FIRST LVDS Receiver Signal (E-)
SECOND LVDS Receiver Signal (A+)SECOND LVDS Receiver Signal (B-)SECOND LVDS Receiver Signal (B+)SECOND LVDS Receiver Signal (C-)SECOND LVDS Receiver Signal (C+)
GroundSECOND LVDS Receiver Clock Signal(-)
SECOND LVDS Receiver Clock Signal(+)Ground
SECOND LVDS Receiver Signal (D-)SECOND LVDS Receiver Signal (D+)SECOND LVDS Receiver Signal (E-)SECOND LVDS Receiver Signal (E+)
No ConnectionNo ConnectionNo Connection
Notes:
1. All GND(ground) pins should be connected together to the LCD module’s metal frame.
2. All VLCD (power input) pins should be connected together.
3. All Input levels of LVDS signals are based on the EIA 644 Standard.
4. Specific pins(pin No. #2~#6) are used for internal data process of the LCD module.
These pins should be no connection.
5. It may be happened to Abnormal Display during the system interface signal is not
6. If Specific pin No. #7, #10, #27 is “NC”, LCD Module may be happened to Abnormal Display
Notes :1. GND should be connected to the LCD module’s metal frame.
2. Normal : Low (under 0.7V) / Abnormal :Open
3. High : on duty / Low : off duty, Pin#14 can be opened. ( if Pin #14 is open , EXTVBR-B is 100% )
4. Each impedance of pin #12 and #13 is over 50 [KΩ] .
◆ Rear view of LCM
14
…
1
<Master>
Ver. 0.2
PCB
…
…
12
1
<Slave>
PCB
◆ Status
…
9 / 29
LD470DUN
Product Specification
3-3. Signal Timing Specifications
Table 6 shows the signal timing required at the input of the LVDS transmitter. All of the interface signal timings
should be satisfied with the following specification for normal operation.
Table 6-1. TIMING TABLE for NTSC (DE Only Mode)
ITEMSymbolMinTypMaxUnitNote
Display PeriodtHV-960-tclk
Horizontal
Vertical
Frequency
BlanktHB100140240tclk
TotaltHP106011001200tclk2200/2
Display PeriodtVV-1080-tHP
BlanktVB114569tHP
TotaltVP109111251149tHP
DCLKfCLK7074.2577MHz148.5/2
HorizontalfH6567.570KHz
VerticalfV576063Hz
Table 6-2. TIMING TABLE for PAL (DE Only Mode)
ITEMSymbolMinTypMaxUnitNote
Display PeriodtHV-960-tclk
Horizontal
BlanktHB100140240tclk
TotaltHP106011001200tclk2200/2
Display PeriodtVV-1080-tHP
Vertical
Frequency
Note
The Input of HSYNC & VSYNC signal does not have an effect on normal operation(DE Only Mode).
BlanktVB228270300tHP
TotaltVP130813501380tHP
DCLKfCLK7074.2577MHz148.5/2
HorizontalfH6567.570KHz
VerticalfV475053Hz
The performance of the electro-optical characteristics may be influenced by variance of the vertical
refresh rate.
Ver. 0.2
10 / 29
3-4. LVDS Signal Specification
3-4-1. LVDS Input Signal Timing Diagram
LD470DUN
Product Specification
DE, Data
DCLK
First data
Second data
0.7VDD
0.3VDD
tCLK
DE(Data Enable)
0.5 VDD
Invalid data
Invalid data
Valid data
Pixel 0,0
Valid data
Pixel 1,0
tHP
Pixel 2,0
Pixel 3,0
Invalid data
Invalid data
tHV
DE(Data Enable)
Ver. 0.2
11080
tVV
tVP
11 / 29
3-4-2. LVDS Input Signal Characteristics
1) DC Specification
LVDS -
LVDS +
LD470DUN
Product Specification
# VCM= {(LVDS +) + ( LVDS -)} /2
0V
V
CM
V
IN _ MAXVIN _ MIN
DescriptionSymbolMinMaxUnitNote
LVDS Common mode VoltageV
LVDS Input Voltage RangeV
CM
IN
1.01.5V-
0.71.8V-
Change in common mode VoltageΔVCM250mV-
2) AC Specification
T
clk
LVDS Clock
A
LVDS Data
(F
= 1/T
)
clk
A
LVDS 1’st Clock
LVDS 2nd / 3rd / 4th Clock
tSKEW
t
SKEW_mintSKEW_max
tSKEW
clk
T
clk
80%
20%
t
RF
DescriptionSymbolMinMaxUnitNote
LVDS Differential Voltage
Low Threshold
LVDS Clock to Data Skew Margint
LVDS Clock/DATA Rising/Falling timet
Effective time of LVDSt
LVDS Clock to Clock Skew Margin (Even to Odd)t
1. All Input levels of LVDS signals are based on the EIA 644 Standard.
Note
High Threshold
2. If tRF isn’t enough, t
should be meet the range.
eff
V
TH
V
TL
SKEW
RF
eff
SKEW_EO
3. LVDS Differential Voltage is defined within t
Ver. 0.2
100300mV
-300-100mV
|(0.25*T
260(0.3*T
)/7|ps-
clk
)/7ps2
clk
±360ps-
1/7* T
clk
eff
3
T
clk
-
12 / 29
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