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LC320DXN
Product Specification
SPECIFICATION
FOR
APPROVAL
( ) Preliminary Specification
( ) Final Specification
Title 32.0" WXGA TFT LCD
BUYER GENERAL SUPPLIER LG Display Co., Ltd.
MODEL *MODEL LC320DXN
SUFFIX SEU1
*When you obtain standard approval,
please use the above model name without suffix
SIGNATURE SIGNATURE
APPROVED BY APPROVED BY
DATE DATE
/ J.Y.JEONG / Team Leader
REVIEWED BY
/ S.W. KWAG/ Project Leader
PREPARED BY
/ D.S.KIM / Engineer
Please return 1 copy for your confirmation with
TV Product Development Dept.
your signature and comments. LG Display Co., Ltd
Ver. 0.0 1 / 38
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LC320DXN
Product Specification
CONTENTS
Number ITEM Page
COVER 1
CONTENTS 2
RECORD OF REVISIONS 3
1 GENERAL DESCRIPTION 4
2 ABSOLUTE MAXIMUM RATINGS 5
3 ELECTRICAL SPECIFICATIONS 6
3-1 ELECTRICAL CHARACTERISTICS 6
3-2 INTERFACE CONNECTIONS 8
3-3 SIGNAL TIMING SPECIFICATIONS 10
3-4 LVDS SIGNAL SPECIFICATIONS 11
3-5 COLOR DATA REFERENCE 14
3-6 POWER SEQUENCE 15
4 OPTICAL SPECIFICATIONS 17
5 MECHANICAL CHARACTERISTICS 23
6 RELIABILITY 26
7 INTERNATIONAL STANDARDS 27
7-1 SAFETY 27
7-2 EMC 27
7-3 ENVIRONMENT 27
8 PACKING 28
8-1 DESIGNATION OF LOT MARK 28
8-2 PACKING FORM 28
9 PRECAUTIONS 29
9-1 MOUNTING PRECAUTIONS 29
9-2 OPERATING PRECAUTIONS 29
9-3 ELECTROSTATIC DISCHARGE CONTROL 30
9-4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE 30
9-5 STORAGE 30
9-6 HANDLING PRECAUTIONS FOR PROTECTION FILM 30
9-7 OPERATING GONDITION GUIDE 30
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LC320DXN
Product Specification
RECORD OF REVISIONS
Revision No. Revision Date Page Description
0.0 Sep. 20, 2011 - Preliminary Specification (First Draft)
Ver. 0.0 3 / 38
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LC320DXN
Product Specification
1. General Description
The LC320DXN is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED)
b a c k l i g ht sys tem. The matr ix employs a-Si Thin Film Trans istor as the active element.
It is a transmissive display type which is operating in the normally black mode. It has a 31.51 inch diagonally
measured active display area with WXGA resolution (768 vertical by 1366 horizontal pixel array).
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in Horizontal stripes.
Gray scale or the luminance of the sub-pixel color is determined with a 8-bit gray scale signal for each dot,
thus presenting a palette of more than 16.7M(6bit + A-FRC) colors.
It has been designed to apply the 8-bit 1-port LVDS interface.
It is intended to support LCD TV, PCTV where high brightness, super wide viewing angle, high color gamut,
high color depth and fast response time are important.
RGB
EEPROM
Source Driver Circuit
SCL SDA
S1 S1366
LVDS Select #9 G1
CN1
(30pin) Timing Controller
LVDS 1Port [LVDS Rx] Control
Signals TFT - LCD Panel
+12.0V (1366 768 x RGB pixels)
[Gate In Panel]
Power Circuit G768
Block Power Signals
+24.0V, GND, On/off
LED Driver Back light Assembly
Ext VBR-B
General Features
Active Screen Size 31.51 inches(800.4mm) diagonal
Outline Dimension 760.0 X 450.0 X 32.5(B) (Typ.)
Pixel Pitch 510.75 x 510.75 x R,G,B
Pixel Format 1366 horiz. by 768 vert. pixels RGB stripe arrangement
Color Depth 8bit(D), 16,7 M colors
Luminance, White 300 cd/m2 (Center 1 point) (Typ.)
Viewing Angle (CR>10) Viewing angle free ( R/L 178(Min.), U/D 178(Min.))
Power Consumption Total 45.98 Watt (Logic=4.08 W , LED Driver =38.9W @ [ExtVbr_B=100%] )
Weight 4.8kg(Typ)
Display Operating Mode Transmissive mode, normally black
Surface Treatment Hard coating(2H), Anti-glare treatment of the front polarizer (Haze 1%)
Ver. 0.0 4 / 38
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LC320DXN
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
Value
Parameter Symbol Unit Note
Min Max
LCD Circuit VLCD -0.3 +14.0 VDC
Power Input Voltage
Driver VBL -0.3 + 27.0 VDC
ON/OFF VOFF / VON -0.3 +5.5 VDC 1
Driver Control Voltage
Brightness EXTVBR-B 0.0 +5.5 VDC
T-Con Option Selection Voltage VLOGIC -0.3 +4.0 VDC
Operating Temperature TOP 0 +50 C
2,3
Storage Temperature TST -20 +60 C
Panel Front Temperature TSUR - +68 C 4
Operating Ambient Humidity HOP 10 90 %RH
2,3
Storage Humidity HST 10 90 %RH
Note1. 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. Gravity mura can be guaranteed below 40 C condition.
4. The maximum operating temperatures is based on the test condition that the surface temperature
of 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 of
display area from being over 68 . The range of operating temperature may be degraded in case of
improper thermal management in final product design.
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]
Ver. 0.0 5 / 38
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LC320DXN
Product Specification
3. Electrical Specifications
3-1. Electrical Characteristics
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
Value
Parameter Symbol Unit Note
Min Typ Max
Circuit :
Power Input Voltage VLCD 10.8 12.0 13.2 VDC
- 340 445 mA 1
Power Input Current ILCD
- 430 560 mA 2
Power Consumption PLCD - 4.08 5.30 Watt 1
Rush current IRUSH - - 3.0 A 3
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. Ripple voltage level is recommended under 5% of typical voltage
White : 255 Gray
Black : 0 Gray
Mosaic Pattern(8 x 6)
Ver. 0.0 6 / 38
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LC320DXN
Product Specification
Table 3. ELECTRICAL CHARACTERISTICS (Continue)
Values
Parameter Symbol Unit Notes
Min Typ Max
LED Driver :
Power Supply Input Voltage VBL 22.8 24.0 25.2 Vdc 1
1.6 1.7
Power Supply Input Current IBL_A - A Ext VBR-B = 100%
(TBD) (TBD)
VBL = 22.8V
6
Power Supply Input Current (In-Rush) Irush - - A Ext VBR-B = 100%
(TBD)
4
38.9 41.2
Power Consumption PBL - W Ext VBR-B = 100%
(TBD) (TBD)
On V on 2.5 - 5.0 Vdc
On/Off
Off V off -0.3 0.0 0.7 Vdc
5
- 100
(TBD) On Duty
Brightness Adjust ExtVBR-B %
1 6
- 100
(TBD)
PAL 100 Hz 3
ExtVBR-B Frequency
NTSC 120 Hz 3
High Level 2.5 - 5.0 Vdc HIGH : on duty
ExtVBR-B Level LOW : off duty
Low Level 0.0 - 0.7 Vdc
LED :
Life Time 30,000 50,000 Hrs 2
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. LGD recommend that the PWM freq. is synchronized with One time 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. 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.
Ver. 0.0 7 / 38
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LC320DXN
Product Specification
3-2. Interface Connections
This LCD module employs two kinds of interface connection, a 30-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) : KDF71G-30S-1H(Hirose) or FI-X30SSL-HF(JAE)
- Mating Connector : : FI-X30C2L (Manufactured by JAE) or Equivalentb
Table 4. MODULE CONNECTOR(CN1) PIN CONFIGURATION
Pin No. Symbol Description Note
1 VLCD Power Supply +12.0V
2 VLCD Power Supply +12.0V
3 VLCD Power Supply +12.0V
4 VLCD Power Supply +12.0V
5 GND Ground
6 GND Ground
7 GND Ground
8 GND Ground
9 LVDS Select `H' =JEIDA , `L' or NC = VESA Appendix IV
10 No Connection 4
11 GND Ground
12 RA- LVDS Receiver Signal(-)
13 RA+ LVDS Receiver Signal(+)
14 GND Ground
15 RB- LVDS Receiver Signal(-)
16 RB+ LVDS Receiver Signal(+)
17 GND Ground
18 RC- LVDS Receiver Signal(-)
19 RC+ LVDS Receiver Signal(+)
20 GND Ground
21 RCLK- LVDS Receiver Clock Signal(-)
22 RCLK+ LVDS Receiver Clock Signal(+)
23 GND Ground
24 RD- LVDS Receiver Signal(-)
25 RD+ LVDS Receiver Signal(+)
26 GND Ground
27 No Connection 4
28 No Connection 4
29 No Connection 4
30 GND Ground
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. These pins are used only for LGD (Do not connect)
5. Specific pin No. #30 is used for "No signal detection" of system signal interface.
It should be GND for NSB (No Signal Black) while the system interface signal is not.
If this pin is "H", LCD Module displays AGP (Auto Generation Pattern).
Ver. 0.0 8 / 38
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LC320DXN
Product Specification
3-2-2. Backlight Module
Master
-LED Driver Connector
: 20022WR - H14B2(Yeonho)
-.Mating Connector
: 20022HS - 14B2 or compatible
Table 5. LED DRIVER CONNECTOR PIN CONFIGURATION
Pin No Symbol Description Note
1 VBL Power Supply +24.0V
2 VBL Power Supply +24.0V
3 VBL Power Supply +24.0V
4 VBL Power Supply +24.0V
5 VBL Power Supply +24.0V
6 GND Backlight Ground
7 GND Backlight Ground
8 GND Backlight Ground 1
9 GND Backlight Ground
10 GND Backlight Ground
11 Status Back Light Status 2
12 VON/OFF Backlight ON/OFF control
13 NC Don't care
14 EXTVBR-B External PWM
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 14 is over 50 [K ] .
Rear view of LCM
Status
PCB
1 14
1 14
...
...
Ver. 0.0 9 / 38
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LC320DXN
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.
ITEM Symbol Min Typ Max Unit Note
Display
tHV - 1366 - tclk
Period
Horizontal Blank tHB 90 162 410 tclk
Total tHP 1456 1528 1776 tclk
Display
tVV - 768 - tHP
Period
20 22 240
Vertical Blank tVB tHP 1
(126) (180) (295)
788 790 1008
Total tVP tHP
(894) (948) (1063)
ITEM Symbol Min Typ Max Unit Note
DCLK fCLK 63.0 72.4 80.0 MHz
Horizontal fH 45 47.4 55 KHz 2
2
Frequency
57 60 63 NTSC :
Vertical fV Hz 57~63Hz
(47) (50) (53)
(PAL :
47~53Hz)
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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LC320DXN
Product Specification
3-4. Signal Timing Waveforms
3-4-1. LVDS Input Signal Timing Diagram
0.7VDD
DE, Data
0.3VDD
tCLK
DCLK 0.5 Vcc
Valid data
1366 Invalid data 1 1366 Invalid data
DE(Data Enable)
tHV
tHT
DE(Data Enable)
768 1 768
tVV
tVT
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LC320DXN
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
A
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 100 300 mV
LVDS Differential Voltage 3
Low Threshold VTL -300 -100 mV
LVDS Clock to Data Skew tSKEW - |(0.20*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
Ver. 0.0 12 / 38
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LC320DXN
Product Specification
360ps
0.5tui tui
V+
data
VTH
Vcm
VTL
V-
360ps
data
teff
V+ tui : Unit Interval
clk
Vcm
V-
clk
Ver. 0.0 13 / 38
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Product Specification
3-5. Color Data Reference
The brightness of each primary color (Red, Green, Blue) is based on the 8-bit 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
Input Color Data
RED GREEN BLUE
Color
MSB LSB MSB LSB MSB LSB
R7 R6 R5 R4 R3 R2 R1 R0 G7 G6 G5 G4 G3 G2 G1 G0 B7 B6 B5 B4 B3 B2 B1 B0
Black 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Red (255) 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Green (255) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
Basic Blue (255) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
Color Cyan 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Magenta 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
Yellow 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
White 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
RED (000) Dark 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RED (001) 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RED ... ... ... ...
RED (254) 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RED (255) 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
GREEN (000) Dark 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
GREEN (001) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0
GREEN ... ... ... ...
GREEN (254) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0
GREEN (255) 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0
BLUE (000) Dark 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
BLUE (001) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
BLUE ... ... ... ...
BLUE (254) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0
BLUE (255) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
Ver. 0.0 14 / 38
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Product Specification
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)
Power for LED T7 LED ON
Table 8. POWER SEQUENCE
Value
Parameter Unit Notes
Min Typ Max
T1 0.5 - 20 ms 1
T2 0 - - ms 2
T3 200 - - ms 3
T4 200 - - ms 3
T5 1.0 - - s 4
T6 - - T2 ms 5
T7 0.5 - - s 6
T8 100 - - ms 7
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.
Ver. 0.0 15 / 38
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Product Specification
3-6-2. Sequence for LED Driver
Power Supply For LED Driver
24V (typ.)
90% 90%
VBL
10%
0V
T3
T1 T2
VON/OFF
LED ON
ExtVBR-B
T4 T6
3-6-3. Dip condition for LED Driver
T5
VBL : 24V
VBL(Typ.) x 0.8
0V
Table 9. Power Sequence for LED Driver
Values
Parameter Units Remarks
Min Typ Max
T1 20 - - ms 1
T2 500 - - ms
T3 10 - - ms
T4 0 - - ms
T5 - - 10 ms VBL(Typ) x 0.8
T6 500 - - ms 2
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 I 2T spec of fuse is satisfied.
2. In T6 section, ExtVBR-B should be sustained from 5% to 100% .
Ver. 0.0 16 / 38
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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 distance 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=72.4MHz,
Table 10. OPTICAL CHARACTERISTICS EXTVBR_B=100%
Value
Parameter Symbol Unit Note
Min Typ Max
Contrast Ratio CR 850 1200 - 1
2D 240 300 2
Surface Luminance, white LWH cd/m2
3D 90 110 8
Luminance Variation G WHITE 5P - - 1.3 3
Variation G to G 6 9 ms 5
Response Time
G to G(BW) G to G BW 9 13 ms 4
Rx 0.649(TBD)
RED
Ry 0.333(TBD)
Gx 0.301(TBD)
GREEN
Color Coordinates Gy Typ 0.593(TBD) Typ
[CIE1931] -0.03 +0.03
Bx 0.149(TBD)
BLUE
By 0.061(TBD)
Wx 0.279
WHITE
Wy 0.292
Color Temperature 10,000 K
Color Gamut 68 %
x axis, right(I=0 ) Tr 89 - -
2D x axis, left (I=180 ) Tl 89 - -
Viewing degree 6
(CR>10) y axis, up (I=90 ) Tu 89 - -
Angle
(CR>10) y axis, down (I=270 ) Td 89 - -
3D Tu (y axis)
up + down 10 - degree 8
(CT 10%) +Td (y axis)
Gray Scale 2.2 7
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Product Specification
Notes : 1. Contrast Ratio(CR) is defined mathematically as :
CR(Contrast Ratio) = Maximum CRn (n=1, 2, 3, 4, 5)
Surface Luminance at position n with all white pixels
CRn =
Surface Luminance at position n with all black pixels
n = the Position number(1, 2, 3, 4, 5). For more information, see FIG 2.
2. Surface luminance is determined after the unit has been `ON' and 1Hour 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. G to G is Variation of Gray to Gray response time composing a picture
(Xi- u)2 Xi = Individual Data
G to G ( ) = N u = Data average
N : The number of Data
6. 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.
7. Gray scale specification
Gamma Value is approximately 2.2. For more information, see the Table 11.
8. 3D performance specification is expressed by 3D luminance and 3D viewing angle.
Table 11. GRAY SCALE SPECIFICATION
Gray Level Luminance [%] (Typ.)
L0 0.08
L15 0.27
L31 1.04
L47 2.49
L63 4.68
L79 7.66
L95 11.5
L111 16.1
L127 21.6
L143 28.1
L159 35.4
L175 43.7
L191 53.0
L207 63.2
L223 74.5
L239 86.7
L255 100
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LC320DXN
Product Specification
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 "Black or White".
Tr Tf
100
90
Optical
Response
10
Gray(N) White Gray(N) Black
0
N = 0(Black)~255(White)
FIG. 3 Response Time
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LC320DXN
Product Specification
Dimension of viewing angle range
Normal
E Y
I = 90 q , Up
I = 180 q , Left
T
I
I = 0 q , Right
I = 270 q , Down
FIG. 4 Viewing Angle
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LC320DXN
Product Specification
2 7 3
LMS
LW-RW LB-RW 6 1 8
Right or left eyeglass
4 9 5 3D display ( Circular polarizer )
LW-RB LB-RB
(b) Measurement
(a) Test pattern image position (c) Setup
< FIG. 6. Measurement configuration>
Luminance
T
Lum( LE or RE, test pattern, number )
Measurement through measurement
Left or Right eyeglass position
< FIG. 7. Positioning eyeglass > < FIG. 8. notation of luminance measurement >
In order to measure 3D luminance, 3D crosstalk and 3D viewing angle, it need to be prepared as below;
1) Measurement configuration
4-Test pattern images. Refer to FIG 6.
-. LW-RW : White for left and right eye
-. LW-RB : White for left eye and Black for right eye
-. LB-RW : Black for left eye and white for right eye
-. LB-RB : Black for left eye and right eye
Image files where black and white lines are displayed on even or odd lines.
Luminance measurement system (LMS) with narrow FOV (field of view) is used. Refer to FIG 1.
2) Positioning Eyeglass (refer to appendix-VII for standard specification of eyeglass)
Find angle of minimum transmittance.
This value would be provided beforehand or measured by the following steps;
(i) Test image (LB-RW) is displayed.
(ii) Left eyeglass are placed in front of LMS and luminance is measured,
rotating right eyeglass such as FIG 7. The notation for luminance measurement is "Lum(LE, LB-RW,1)".
(iii) Find the angle where luminance is minimum.
* Following measurements should be performed at the angle of minimum transmittance of eyeglass.
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