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LC420WX5
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
( ) Preliminary Specification
( ) Final Specification
Title 42.0" WXGA TFT LCD
BUYER SUPPLIER LG.Philips LCD Co., Ltd.
MODEL *MODEL LC420WX5
SUFFIX SLA1 (RoHS Verified)
*When you obtain standard approval,
please use the above model name without suffix
SIGNATURE SIGNATURE
APPROVED BY APPROVED BY
DATE DATE
/ H. S Baek / G. Manager
REVIEWED BY
/ D. S Kim / Manager
PREPARED BY
/ Y. J Heo / Engineer
Please return 1 copy for your confirmation with TV Products Development Dept.
your signature and comments. LG. Philips LCD Co., Ltd
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LC420WX5
Liquid Crystal Display
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 12
3-4 SIGNAL TIMING WAVEFORMS 13
3-5 COLOR INPUT DATA REFERENCE 14
3-6 POWER SEQUENCE 15
4 OPTICAL SPECIFICATIONS 17
5 MECHANICAL CHARACTERISTICS 21
6 RELIABILITY 24
7 INTERNATIONAL STANDARDS 25
7-1 SAFETY 25
7-2 EMC 25
8 PACKING 26
8-1 DESIGNATION OF LOT MARK 26
8-2 PACKING FORM 26
9 PRECAUTIONS 27
9-1 MOUNTING PRECAUTIONS 27
9-2 OPERATING PRECAUTIONS 27
9-3 ELECTROSTATIC DISCHARGE CONTROL 28
9-4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE 28
9-5 STORAGE 28
9-6 HANDLING PRECAUTIONS FOR PROTECTION FILM 28
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LC420WX5
Liquid Crystal Display
Product Specification
RECORD OF REVISIONS
Revision No. Revision Date Page Description
0.0 Nov, 24, 2006 - Preliminary Specification(First Draft)
1.0 Nov, 30, 2006 17 Update Optical characteristics(DCR spec)
Final Specification
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LC420WX5
Liquid Crystal Display
Product Specification
1. General Description
The LC420WX5 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent
Lamp(CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive type display operating in the normally black mode. It has a 42.0 inch diagonally measured
act i ve d ispl a y 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 vertical 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(true) 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.
EEPROM Mini-LVDS(RGB)
SDRAM
(LUT) Source Driver Circuit
+12.0V
MEM SDA
RGB SCL S1 S1366
LVDS 5pair CTRL
G1
LVDS Rx (Receiver)
Gate Driver Circuit
Select #9 DCR Controller
DCR CN1 TEMP ODC Controller
Enable #10 (30pin) Timing Controller TFT - LCD Panel
VBR_EXT #28
(1366 RGB 768 pixels)
VBR_OUT #27 Power Circuit G768
Block
VBR for DCR
+24.0V
Inverter 3Pin x 1CN (High))
GND Back light Assembly (18CCFL)
Status (CN2,CN3) 3pin x 1CN (High)
General Features
Active Screen Size 42.02 inches(1067.308mm) diagonal
Outline Dimension 983 mm(H) x 576 mm(V) x 51 mm(D) (Typ.)
Pixel Pitch 0.227mm x 0.681mm x RGB
Pixel Format 1366 horiz. by 768 vert. Pixels RGB stripe arrangement
Color Depth 8-bit, 16.7 M colors
Luminance, White 500 cd/m2 (Center 1-point) (Typ.)
Viewing Angle (CR>10) Viewing Angle Free ( R/L 178 (Typ.), U/D 178 (Typ))
Power Consumption Total 168.36 W (Typ.) (Logic=6.36 W, Inverter=162W [IBL=126mA] )
Weight 11.5Kg (Typ.)
Display Operating Mode Transmissive mode, Normally black
Surface Treatment Hard coating(3H), Anti-glare treatment of the front polarizer
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LC420WX5
Liquid Crystal Display
Product Specification
2. Absolute Maximum Ratings
The following items are maximum values which, if exceeded, may cause faulty operation or damage to the
LCD module.
Table 1. ABSOLUTE MAXIMUM RATINGS
Value
Parameter Symbol Unit Remark
Min Max
Power Input LCD circuit VLCD -0.3 +14.0 VDC r
Voltage
Inverter VBL 21.6 +27.0 VDC
Inverter Control ON/OFF VOFF/VON -0.3 +5.25 VDC
Voltage Brightness VBR_B 0.0 +5.0 VDC
Operating Temperature TOP 0 +50 C
Storage Temperature TST -20 +50 C
Note 1
Operating Ambient Humidity HOP 10 90 %RH
Storage Humidity HST 10 90 %RH
Note 1. Temperature and relative humidity range are shown in the figure below.
Wet bulb temperature should be 39 C Max, and no condensation of water.
2. Gravity mura can be guaranteed under 40 C condition.
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LC420WX5
Liquid Crystal Display
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 input power for the
CCFL/Backlight is to power inverter.
Table 2. ELECTRICAL CHARACTERISTICS
Value
Parameter Symbol Unit Note
Min Typ Max
Circuit :
Power Input Voltage VLCD 11.4 12.0 12.6 VDC
- 530 689 mA 1
Power Input Current ILCD
- 600 780 mA 2
Power Consumption PLCD 6.36 8.27 Watt 1
Rush current IRUSH - - 3.0 A 3
Note : 1. The specified current and power consumption are under the VLCD=12.0V, 25 r 2 C, fV=60Hz
condition whereas 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 1ms (min.).
White : 255Gray
Black : 0Gray
Mosaic Pattern(8 x 6)
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LC420WX5
Liquid Crystal Display
Product Specification
Table 3. ELECTRICAL CHARACTERISTICS (Continue)
Values
Parameter Symbol Unit Notes
Min Typ Max
Inverter :
Power Supply Input Voltage VBL 22.8 24.0 25.2 Vdc 1
Power Supply Input Voltage Ripple - - 0.4 Vp-p 1
- 6.75 7.2 A VBR-A = 1.65V ... 1
After Aging IBL_A
Power Supply - 7.25 7.7 A VBR-A = 3.3V ... 1
Input Current - 8.1 8.6 A VBR-A = 1.65V ... 2
Before Aging IBL_B
- 8.5 9.0 A VBR-A = 3.3V ... 2
VBL = 24V
Power Supply Input Current (In-Rush) Irush - - 8.6 A VBR-B = 3.3V
VBR-A = 1.65V
Power Consumption PBL - 162 172.8 W VBR-A = 1.65V ... 1
Brightness Adjust VBR-A 0.0 1.65 3.3 Vdc
Input Voltage for On V on 2.5 - 5.0 Vdc
Control System On/Off
Signals Off V off -0.3 0.0 0.8 Vdc
Brightness Adjust VBR-B 0 - 3.3 V 3
Lamp:
Discharge Stabilization Time Ts 3 min 4
Life Time 50,000 Hrs 5
Notes :
1. Electrical characteristics are determined after the unit has been `ON' and stable for approximately 120
minutes at 25 2 C. The specified current and power consumption are under the typical supply Input voltage
24V, it is total power consumption.
The ripple voltage of the power supply input voltage is under 0.4 Vp-p. LPL recommend Input Voltage is
24.0V 5%.
2. Electrical characteristics are determined within 30 minutes at 25 2 C.
The specified currents are under the typical supply Input voltage 24V.
3. Brightness Control.
This VBR-B Voltage control brightness.
VBR-B Voltage Function VBR-B Voltage Function
0V Minimum Duty (25%) 3.3V Maximum Duty (100%)
.
4. The brightness of the lamp after lighted for 5minutes is defined as 100%.
TS is the time required for the brightness of the center of the lamp to be not less than 95% at typical current.
The screen of LCD module may be partially dark by the time the brightness of lamp is stable after turn on.
5. Specified Values are for a single lamp which is aligned horizontally.
The life time is determined as the time which luminance of the lamp is 50% compared to that of initial value
at the typical/maximum lamp current(VBR-A=1.65V/3.3V) on condition of continuous operating at 25 r 2 C
6. The duration of rush current is about 15ms.
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LC420WX5
Liquid Crystal Display
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 Master 14-pin and Slave 12-pin connectors are used for the integral backlight system.
3-2-1. LCD Module
- LCD Connector(CN1) : FI-X30SSL-HF (Manufactured by JAE) or Equivalent
- Mating Connector : FI-30C2L (Manufactured by JAE) or Equivalent
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 Select Select LVDS Data format 1
10 ` ' ` ' 2
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
28
29 GND Ground
30 GND Ground 3
Note: 1. The pin no 9 is an option pin for DISM or LG format. ( LG Format = "GND" / DISM Format ="VCC")
Please refer to page 9 and 10 for further details
2. The pin no 10 is an option pin for DCR Function ( Enable = "VCC" / Disable ="GND")
3. The pin no 30 is LCD Test option.
LCM operates "AGP" (Auto Generation Pattern) or "NSB" (No Signal Black) is case that LVDS signals
are out of frequency or abnormal condition in spite of 12 volt power supply.
LPL recommends "NSB". ( AGP : "VCC" or "OPEN" / NSB : "GND" )
4. All GND (ground) pins should be connected together, which should be also connected to the LCD
module's metal frame.
5. All VLCD (power input) pins should be connected together.
6. Input Levels of LVDS signals are based on the IEA 664 Standard.
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LC420WX5
Liquid Crystal Display
Product Specification
Table 5. REQUIRED SIGNAL ASSIGNMENT FOR LVDS TRANSMITTER ( Pin9="L" )
Host System DS90C385 Timing
24 Bit or Compatible FI-X30SSL-HF Controller
RED0 51
48
RED1 52 TxOUT0- 12 RxIN0-
47 100
RED2 54 TxOUT0+ 13 RxIN0+
RED3 55
RED4 56
46
RED5 3 TxOUT1- 15 RxIN1-
45 100
RED6 50 TxOUT1+ 16 RxIN1+
RED7 2
GREEN0 4
42
GREEN1 6 TxOUT2- 18 RxIN2-
41 100
GREEN2 7 TxOUT2+ 19 RxIN2+
GREEN3 11
GREEN4 12
40
GREEN5 14 TxCLKOUT- 21 RxCLKIN-
39 100
GREEN6 8 TxCLKOUT+ 22 RxCLKIN+
GREEN7 10
BLUE0 15
38
BLUE1 19 TxOUT3- 24 RxIN3-
37 100
BLUE2 20 TxOUT3+ 25 RxIN3+
BLUE3 22
BLUE4 23 9 LG / DISM
BLUE5 24 30 LCD Test
BLUE6 16
BLUE7 18
Hsync 27
GND
GND
Vsync 28
Data Enable 30
LCD Module
CLOCK 31
Note: 1. The LCD Module uses a 100 Ohm[ ] resistor between positive and negative lines of each receiver
input.
2. Refer to LVDS Transmitter Data Sheet for detail descriptions. (DS90C385 or Compatible)
3. `7' means MSB and `0' means LSB at R,G,B pixel data.
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LC420WX5
Liquid Crystal Display
Product Specification
Table 6. REQUIRED SIGNAL ASSIGNMENT FOR LVDS TRANSMITTER ( Pin9="H" )
Host System DS90C385 Timing
24 Bit or Compatible FI-X30SSL-HF Controller
RED0 50
48
RED1 2 TxOUT0- 12 RxIN0-
47 100
RED2 51 TxOUT0+ 13 RxIN0+
RED3 52
RED4 54
46
RED5 55 TxOUT1- 15 RxIN1-
45 100
RED6 56 TxOUT1+ 16 RxIN1+
RED7 3
GREEN0 8 42
GREEN1 10 TxOUT2- 18 RxIN2-
41 100
GREEN2 4 TxOUT2+ 19 RxIN2+
GREEN3 6
GREEN4 7
40
GREEN5 11 TxCLKOUT- 21 RxCLKIN-
39 100
GREEN6 12 TxCLKOUT+ 22 RxCLKIN+
GREEN7 14
BLUE0 16
38
BLUE1 18 TxOUT3- 24 RxIN3-
37 100
BLUE2 15 TxOUT3+ 25 RxIN3+
BLUE3 19
BLUE4 20 9 LG / DISM
BLUE5 22 30 LCD Test
BLUE6 23
BLUE7 24
Hsync 27
GND
Vsync 28
Vcc
Data Enable 30
LCD Module
CLOCK 31
Note: 1. The LCD module uses a 100 Ohm[ ] resistor between positive and negative lines of each receiver
input.
2. Refer to LVDS Transmitter Data Sheet for detail descriptions. (DS90C385 or Compatible)
3. `7' means MSB and `0' means LSB at R,G,B pixel data.
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LC420WX5
Liquid Crystal Display
Product Specification
3-2-2. Backlight Inverter
Master Slave
-Inverter Connector : S14B-PH-SMC -Inverter Connector : S12B-PH-SMC
(manufactured by JST) or Equivalent (manufactured by JST) or Equivalent
- Mating Connector : PHR-14 or Equivalent -Mating Connector : PHR-12 or Equivalent
Table 7. INVERTER CONNECTOR PIN CONFIGULATION
Pin No Symbol Description Master Slave Note
1 VBL Power Supply +24.0V VBL VBL
2 VBL Power Supply +24.0V VBL VBL
3 VBL Power Supply +24.0V VBL VBL
4 VBL Power Supply +24.0V VBL VBL
5 VBL Power Supply +24.0V VBL VBL
6 GND Backlight Ground GND GND
7 GND Backlight Ground GND GND
8 GND Backlight Ground GND GND 1
9 GND Backlight Ground GND GND
10 GND Backlight Ground GND GND
Analog dimming
11 VBR-A
DC 0.0V ~ 3.3V
VBR-A Don't care 2, 3
Open/High for B/L
12 VON/OFF 0.0V ~ 5.0V On/Off Don't care
on as default
Burst dimming
13 VBR-B VBR-B - 3
DC 0.0V ~ 3.3V
Normal : Upper 3.0V
14 Status Status - 4
Abnormal : Under 0.7V
Note : 1. GND should be connected to the LCD module's metal frame.
2. If Pin #11 is open, VBR-A = 1.65V
When apply over 1.65V( ~ 3.3V), its luminance is increasing however lamp's life time is decreasing.
It could be usable for boost up luminance when using DCR (=Dynamic contrast ratio) function only.
3. Minimum Brightness : VBR =0V Maximum Brightness : VBR = 3.3V
4. Even though Pin #14 is open, there is no effect on inverter operating, The output terminal of inverter
Rear view of LCM
PCB PCB
14 1
...
...
...
...
1 12
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LC420WX5
Liquid Crystal Display
Product Specification
3-3. Signal Timing Specifications
Table 8 shows the signal timing required at the input of the LVDS transmitter. All of the interface signal timing
should be satisfied with the following specification for normal operation.
Table 8. TIMING TABLE for NTSC &PAL [ DE (Data Enable) Only ]
ITEM Symbol Min Typ Max Unit Note
Period tCLK 12.2 13.8 14.7 ns
DCLK
Frequency - 68 72.4 80 MHz
Period tHP 1456 1528 1776 tCLK
Horizontal Valid tHV 1366 1366 1366 tCLK
Horizontal Blank - tHP- tHV 162 tHP- tHV
Hsync Frequency fH 45 47.4 50 KHz
Width tWH - 32 - tCLK
Horizontal Back Porch tHBP 24 48 -
Horizontal Front Porch tHFP 40 80 -
Period tVP 776 790 1063 tHP
Vertical Valid tVV 768 768 768 tHP
Vertical Blank - tVP- tVV 22 tVP- tVV tHP
Note 1)
Vsync Frequency fV 47 60 63 Hz
PAL : 47~53Hz
Width tWV - 5 - tHP NTSC : 57~63Hz
Vertical Back Porch tVBP 5 15 - Hz
Vertical Front Porch tVFP 1 2 - tHP
Note :
1. The performance of the electro-optical characteristics may be influenced by variance of the vertical
refresh rate.
2. Above Timing Tables are only valid for DE Mode.
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Liquid Crystal Display
Product Specification
3-4. Signal Timing Waveforms
0.7VDD
DE, Data
0.3VDD
tCLK
DCLK 0.5 VDD
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
tHT
1 768
DE(Data Enable)
tVV
tVT
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Liquid Crystal Display
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 10 provides a reference for color versus data input.
Table 9. COLOR DATA REFERENCE
Input Color Data
RED GREEN BLUE
Color
MSB LSB MSB LSB MSB LSB
R7 R6 R5 R4 R3 R2 R1 R0 G 7 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
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LC420WX5
Liquid Crystal Display
Product Specification
3-6. Power Sequence
3-6-1. LCD Driving circuit
90% 90%
Power Supply For LCD
VLCD 10% 10%
0V
T1 T 2 T5 T6 T7
Valid Data
Interface Signal (Tx)
T3 T4
T8 T9
Option Signal
(DISM, DCR_Enable)
Lamp ON
Power for Lamp
Table 10. POWER SEQUENCE
Value
Parameter Unit
Min Typ Max
T1 1.0 - 20 ms
T2 5.0 - 50 ms
T3 200 - - ms
T4 200 - - ms
T5 0.5 - 50 ms
T6 - - 300 ms
T7 1.0 - - s
T8 0 < T8 < T2 ms
T9 0 < T9 < T5 ms
Note : 1. Please avoid floating state of interface signal at invalid period.
2. When the interface signal is invalid, be sure to pull down the power supply VLCD to 0V.
3. The case when the T2/T5 exceed maximum specification, it operates protection
pattern(Black pattern) till valid signal inputted. There is no reliability problem.
4. 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.
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LC420WX5
Liquid Crystal Display
Product Specification
3-6-2. Sequence for Inverter
Power Supply For Inverter
24V (typ.)
90%
VBL
10% 0.7V
0V
T1 T2 1000ms (Min) T5 T3 T2 1000ms (Min)
Inverter Enable
VON/OFF
T4 T4
VBR
T7
* VBR: (VBR-A , VBR-B)
3-6-3. Deep condition for Inverter
T6
VBL : 24V
VBL(Typ.) x 0.85
0V
Table 11. Power Sequence for Inverter
Values
Parameter Units Remarks
Min Typ Max
T1 20 - - ms 1
T2 500 - - ms
T3 200 - - ms
T4 0 - ms 2
T5 10 - - ms
T6 - - 10 ms VBL(Typ) x 0.85
T7 1000 - - ms 3
Notes : 1. T1 describes rising time of 0V to 24V and is not applied at restarting time.
2. T4(max) is less than T2.
3. In T7 section, VBR-B is 3.3V and VBR-A is 1.65V
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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 an approximate distance 50cm from the LCD surface at a viewing angle
of ) and T equal to 0 .
It is presented additional information concerning the measurement equipment and method in FIG. 1.
LCD Module Pritchard 880 or
Optical Stage(x,y)
equivalent
50cm
FIG. 1 Optical Characteristic Measurement Equipment and Method
Table 12. OPTICAL CHARACTERISTICS
Ta= 25 2 C, VLCD=12.0V, fV=60Hz, Dclk=72.4MHz, VBR-A=3.3V, VBR-B=3.3V
Value
Parameter Symbol Unit Note
Min Typ Max
Contrast Ratio CR 700 1000
1
CR with DCR 1400 2000
Surface Luminance, white LWH 400 500 cd/m2 2
Luminance Variation G WHITE 5P 1.3 3
Gray-to-Gray G to G - 5 8
Response Time ms 4
Rise + decay TrR +TrD - 10 14
Rx 0.635
RED
Ry 0.344
Gx 0.286
GREEN
Color Coordinates Gy Typ 0.614 Typ
[CIE1931] Bx -0.03 0.146 +0.03
BLUE
By 0.061
Wx 0.279
WHITE
Wy 0.292
Viewing Angle (CR>10)
x axis, right(I=0 ) Tr 85 89 -
x axis, left (I=180 ) Tl 85 89 -
degree 5
y axis, up (I=90 ) Tu 85 89 -
y axis, down (I=270 ) Td 85 89 -
Gray Scale - - 6
Ver. 1.0 Nov. 30, 2006 17 / 28
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LC420WX5
Liquid Crystal Display
Product Specification
Note :1. Contrast Ratio(CR) is defined mathematically as :
CR(Contrast Ratio) = Maximum CRn (n=1, 2, 3, 4, 5)
DCR(Dynamic CR) = 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 are determined after the unit has been `ON' and 30min 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 transition from G(N) to G(M) (Rise Time, TrR)
and from G(M) to G(N) (Decay Time, TrD). For additional information see the FIG. 3. (N
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