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LD320EUN
Product Specification

SPECIFICATION
FOR
APPROVAL

( ) Preliminary Specification
( ) Final Specification

Title 32.0" WUXGA TFT LCD

BUYER General SUPPLIER LG Display Co., Ltd.

MODEL *MODEL LD320EUN
SUFFIX SEM1 (RoHS Verified)
*When you obtain standard approval,
please use the above model name without suffix

SIGNATURE SIGNATURE
APPROVED BY
DATE DATE

Please return 1 copy for your confirmation with PD Product Design Dept.
your signature and comments. LG Display Co., Ltd

Ver. 0.1 1 /37

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LD320EUN
Product Specification

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Product Specification

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LD320EUN
Product Specification

1. General Description
The LD320EUN is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED)
b a c k l i g h t s y s t e m . T h e m a t r i x e mplo ys a-Si Th in Film Trans istor as the active e lem ent.
It is a transmissive display type which is operating in the normally black mode. It has a 31.55 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 8-bit gray scale signal for each dot.
Therefore, it can present a palette of more than 16.7Milion colors. It has been designed to apply the 8-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.
EPI(RGB)
LVDS EEPROM
Source Driver Circuit
2Port
SCL SDA S1 S1920
LVDS
Select LVDS 1,2 G1

Timing Controller
OPC
Enable
Option
signal
LVDS Rx + OPC + DGA TFT - LCD Panel
CN1 Integrated Control (1920 RGB 1080 pixels)
(51pin) Signals
[Gate In Panel]
ExtVBR-B I2C G1080

+12.0V
Power Circuit Power Signals
PWM_OUT CN2 Block
1~3 (8 pin)

PWM_OUT
1~3
+24.0V, GND, On/Off LED Driver

General Features
31.55 inches(801.31mm) diagonal

0.36375 mm x 0.36375 mm
1920 horiz. by 1080 vert. Pixels, RGB stripe arrangement
8bit, 16.7Million colors
400 cd/m2 (Center 1point ,Typ.)
Viewing angle free ( R/L 178 (Min.), U/D 178 (Min.))

Transmissive mode, Normally black
Hard coating(3H), Anti-glare treatment of the front polarizer (Haze < 1%)

Ver. 0.1 4 /37

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LD320EUN
Product Specification

2. Absolute Maximum Ratings
The following items are maximum values which, if exceeded, may cause faulty operation or permanent damage
to the LCD module.

Table 1. ABSOLUTE MAXIMUM RATINGS

Note 1. Ambient temperature condition (Ta = 25 r 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. Glass surface temperature can be guaranteed under 60 .

90%

60
60%

50 Storage
Humidity [(%)RH]

Wet Bulb
Temperature [ C]
40
40%
Operation
30
20
10
0
10%

-20 0 10 20 30 40 50 60 70 80

Dry Bulb Temperature [ C]

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LD320EUN
Product Specification

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

Note 1. The specified current and power consumption are under the VLCD=12.0V, Ta=25 r 2 C, fV=60Hz
condition, and mosaic pattern(8 x 6) is displayed and fV is the frame frequency.
2. The current is specified at the maximum current pattern.
3. The duration of rush current is about 2ms and rising time of power input is 0.5ms (min.).
4. ExtVBR-B signal have to input available duty range and sequence.
After Driver ON signal is applied, ExtVBR-B should be sustained from 5% to 100% more than 500ms.
After that, ExtVBR-B 1% and 100% is possible
For more information, please see 3-6-2. Sequence for LED Driver.
5. Ripple voltage level is recommended under 5% of typical voltage

White : 255 Gray
Black : 0 Gray

Mosaic Pattern(8 x 6)
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LD320EUN
Product Specification
Table 3. ELECTRICAL CHARACTERISTICS (Continue)

Notes :
1. Electrical characteristics are determined after the unit has been `ON' and stable for approximately 60
minutes at 25 2 C. The specified current and power consumption are under the typical supply Input voltage
24Vand 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. The duration of rush current is about 200ms. This duration is applied to LED on time.
4. Even though inrush current is over the specified value, there is no problem if I2T spec of fuse is satisfied.

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LD320EUN
Product Specification

3-2. Interface Connections
This LCD module employs two kinds of interface connection, 51-pin connector is used for the module
electronics and 14-pin connector is used for the integral backlight system.
3-2-1. LCD Module
- LCD Connector(CN1): FI-R51S-HF(manufactured by JAE) or compatible
Refer to below and next Page table
- Mating Connector : FI-R51HL(JAE) or compatible

Table 4. MODULE CONNECTOR(CN1) PIN CONFIGURATION
No Symbol Description No Symbol Description
1 NC No Connection (Note 4) 27 NC No Connection
2 NC No Connection (Note 4) 28 R2AN SECOND LVDS Receiver Signal (A-)
3 NC No Connection (Note 4) 29 R2AP SECOND LVDS Receiver Signal (A+)
4 NC No Connection (Note 4) 30 R2BN SECOND LVDS Receiver Signal (B-)
5 NC No Connection (Note 4) 31 R2BP SECOND LVDS Receiver Signal (B+)
6 NC No Connection (Note 4) 32 R2CN SECOND LVDS Receiver Signal (C-)
7 LVDS Select `H' =JEIDA , `L' or NC = VESA 33 R2CP SECOND LVDS Receiver Signal (C+)
8 ExtVBR-B External PWM (from System) 34 GND Ground
9 NC No Connection (Note 4) 35 R2CLKN SECOND LVDS Receiver Clock Signal(-)
10 OPC Enable `H' = Enable , `L' or NC = Disable 36 R2CLKP SECOND LVDS Receiver Clock Signal(+)
11 GND Ground 37 GND Ground
12 R1AN FIRST LVDS Receiver Signal (A-) 38 R2DN SECOND LVDS Receiver Signal (D-)
13 R1AP FIRST LVDS Receiver Signal (A+) 39 R2DP SECOND LVDS Receiver Signal (D+)
14 R1BN FIRST LVDS Receiver Signal (B-) 40 NC No Connection
15 R1BP FIRST LVDS Receiver Signal (B+) 41 NC No Connection
16 R1CN FIRST LVDS Receiver Signal (C-) 42 NC or GND No Connection or Ground
17 R1CP FIRST LVDS Receiver Signal (C+) 43 NC or GND No Connection or Ground
18 GND Ground 44 GND Ground
19 R1CLKN FIRST LVDS Receiver Clock Signal(-) 45 GND Ground
20 R1CLKP FIRST LVDS Receiver Clock Signal(+) 46 GND Ground
21 GND Ground 47 NC No connection
22 R1DN FIRST LVDS Receiver Signal (D-) 48 VLCD Power Supply +12.0V
23 R1DP FIRST LVDS Receiver Signal (D+) 49 VLCD Power Supply +12.0V
24 NC No Connection 50 VLCD Power Supply +12.0V
25 NC No Connection 51 VLCD Power Supply +12.0V
26 NC or GND No Connection or Ground - - -

Note 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. #1~#6 & #9 NC (No Connection): These pins are used only for LGD (Do not connect)
5. Specific pins(pin No. #10) are used for Scanning function of the LCD module.
If not used, these pins are no connection. (Please see the Appendix VI for more information.)
6. Specific pin No. #44 is used for "No signal detection" of system signal interface.
It should be GND for NSB(No Signal Black) during the system interface signal is not.
If this pin is "H", LCD Module displays AGP(Auto Generation Pattern).

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LD320EUN
Product Specification

3-2-2. Backlight Module
Master
-LED Driver Connector
: 20022WR - H14B2(Yeonho) or compatible
- Mating Connector
: 20022HS - 14B2 or compatible

Table 5. LED DRIVER CONNECTOR PIN CONFIGURATION

Notes :1. GND should be connected to the LCD module's metal frame.
2. Normal : Low (under 0.7V) / Abnormal : Open
3. Each impedance of pin #12 is over TBD [K ] .

Rear view of LCM Status
PCB

1 14
1 14
...
...

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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. TIMING TABLE (DE Only Mode)

Note: 1. The input of HSYNC & VSYNC signal does not have an effect on normal operation (DE Only Mode).
If you use spread spectrum of EMI, add some additional clock to minimum value for clock margin.

2. The performance of the electro-optical characteristics may be influenced by variance of the vertical
refresh rate and the horizontal frequency

Timing should be set based on clock frequency.

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Product Specification

3-4. LVDS Signal Specification
3-4-1. LVDS Input Signal Timing Diagram

0.7VDD
DE, Data
0.3VDD

tCLK
0.5 VDD

DCLK

Valid data

First data Invalid data Pixel 0,0 Pixel 2,0 Invalid data

Valid data

Second data Invalid data Pixel 1,0 Pixel 3,0 Invalid data

DE(Data Enable)

tHV

tHP

1 1080

DE(Data Enable)

tVV

tVP

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Product Specification

3-4-2. LVDS Input Signal Characteristics
1) DC Specification
LVDS -

LVDS +

V CM V IN _ MAX V IN _ MIN

# V CM = {( LVDS +) + ( LVDS - )} /2
0V

Description Symbol Min Max Unit Note
LVDS Common mode Voltage VCM 1.0 1.5 V -
LVDS Input Voltage Range VIN 0.7 1.8 V -
Change in common mode Voltage VCM 250 mV -
2) AC Specification
Tclk

LVDS Clock

LVDS Data

( F clk = 1 /T clk )
tSKEW tSKEW
A
Tclk
LVDS 1'st Clock 80%

LVDS 2nd / 3rd / 4th Clock
20%
tRF
tSKEW_min tSKEW_max

Description Symbol Min Max Unit Note
High Threshold VTH 100 600 mV
LVDS Differential Voltage 3
Low Threshold VTL -600 -100 mV
LVDS Clock to Data Skew tSKEW - |(0.25*Tclk)/7| ps -
LVDS Clock/DATA Rising/Falling time tRF 260 |(0.3*Tclk)/7| ps 2
Effective time of LVDS teff | 360| - ps -
LVDS Clock to Clock Skew (Even to Odd) tSKEW_EO - |1/7* Tclk| ps -
Note 1. All Input levels of LVDS signals are based on the EIA 644 Standard.
2. If tRF isn't enough, teff should be meet the range.
3. LVDS Differential Voltage is defined within teff

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Product Specification

0.5tui tui

LVDS Data
360ps

VTH
0V
(Differential) VTL

360ps

teff

LVDS CLK tui : Unit Interval

0V
(Differential)

* This accumulated waveform is tested with differential probe

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Product Specification

3-5. Color Data Reference

The brightness of each primary color(red,green,blue) is based on the 8bit gray scale data input for the color.
The higher binary input, the brighter the color. Table 7 provides a reference for color versus data input.

Table 7. COLOR DATA REFERENCE

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3-6. Power Sequence
3-6-1. LCD Driving circuit

90%
90%
Power Supply For LCD
VLCD 10% 10% 10%
0V
T8
T1
T5
T2
Valid Data Vcm : LVDS Common mode Voltage
30%
Interface Signal (Tx_clock) 0V

100% T3 T4
T6
User Control Signal
(LVDS_select, OPC Enable, ExtVBR-B)

Power for LED T7 LED ON

Table 8. POWER SEQUENCE

1. Even though T1 is over the specified value, there is no problem if I2T spec of fuse is satisfied.
Note : 2. If T2 is satisfied with specification after removing LVDS Cable, there is no problem.
3. The T3 / T4 is recommended value, the case when failed to meet a minimum specification,
abnormal display would be shown. There is no reliability problem.
4. T5 should be measured after the Module has been fully discharged between power off and on period.
5. If the on time of signals (Interface signal and user control signals) precedes the on time of Power (VLCD),
it will be happened abnormal display. When T6 is NC status, T6 doesn't need to be measured.
6. If there is no abnormal display, no problem.
7. It is recommendation specification that T8 has to be 100ms as a minimum value.
Please avoid floating state of interface signal at invalid period.
When the power supply for LCD (VLCD) is off, be sure to pull down the valid and invalid data to 0V.

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3-6-2. Sequence for LED Driver
Power Supply For LED Driver

24V (typ.)
90% 90%
VBL
10%
0V

T1 T2 T3

VON/OFF
LED ON

ExtVBR-B

T4 T6

3-6-3. Dip condition for LED Driver

T5
VBL : 24V

VBL(Typ.) x 0.8

Table 9. Power Sequence for LED Driver

Notes : 1. T1 describes rising time of 0V to 24V and this parameter does not applied at restarting time.
Even though T1 is over the specified value, there is no problem if I2T spec of fuse is satisfied.
2. In T6 section, ExtVBR-B should be sustained from 5% to 100% .

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Product Specification
4. Optical Specification
Optical characteristics are determined after the unit has been `ON' and stable in a dark environment at 25 2 C.
The values are specified at 50cm from the LCD surface at a viewing angle of ) and T equal to 0 .
FIG. 1 shows additional information concerning the measurement equipment and method.

LCD Module Pritchard 880 or
Optical Stage(x,y)
equivalent

50cm
FIG. 1 Optical Characteristic Measurement Equipment and Method

Ta= 25 2 C, VLCD=12.0V, fV=60Hz, Dclk=74.25MHz,
Table 10. OPTICAL CHARACTERISTICS EXTVBR-B =100%

I T
I T
I T
I T

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Product Specification
Note : 1. Contrast Ratio(CR) is defined mathematically as :

Surface Luminance with all white pixels
Contrast Ratio =
Surface Luminance with all black pixels
It is measured at center 1-point.
2. Surface luminance are determined after the unit has been `ON' and 1 Hour after lighting the
backlight in a dark environment at 25 2 C. Surface luminance is the luminance value at center
1-point across the LCD surface 50cm from the surface with all pixels displaying white.
For more information see the FIG. 2.
3. The variation in surface luminance , G WHITE is defined as :
G WHITE(5P) = Maximum(Lon1,Lon2, Lon3, Lon4, Lon5) / Minimum(Lon1,Lon2, Lon3, Lon4, Lon5)
Where Lon1 to Lon5 are the luminance with all pixels displaying white at 5 locations .
For more information, see the FIG. 2.
4. Response time is the time required for the display to transit from any gray to white (Rise Time, TrR)
and from any gray to black (Decay time, TrD). For additional information see the FIG. 3.
G to GBW Spec stands for average value of all measured points.
Photo Detector : RD-80S / Field : 2
5. Viewing angle is the angle at which the contrast ratio is greater than 10. The angles are
determined for the horizontal or x axis and the vertical or y axis with respect to the z axis which
is normal to the LCD module surface. For more information, see the FIG. 4.
6. Gray scale specification
Gamma Value is approximately 2.2. For more information, see the Table 11.

Table 11. GRAY SCALE SPECIFICATION

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Measuring point for surface luminance & measuring point for luminance variation.

H
A
V
B

A : H / 4 mm
B : V / 4 mm
@ H,V : Active Area

FIG. 2 5 Points for Luminance Measure

Response time is defined as the following figure and shall be measured by switching the input signal for
"Gray(N)" and "Gray(M)".

TrR TrD
100
90

Optical
Response

10
Gray(N) Gray(M) Gray(N)
0
N,M = Black~White, N

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