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LP156WF4
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
( ) Preliminary Specification
( ) Final Specification
Title
Customer Sony SUPPLIER LG Display Co., Ltd.
MODEL *MODEL LP156WF4
Suffix SPU1
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY SIGNATURE APPROVED BY SIGNATURE
S. R. Kim / S.Manager
/
REVIEWED BY
/
C. I. Kim / Manager
/ PREPARED BY
S. Y. Kim / Engineer
H. M. Lee / Engineer
Please return 1 copy for your confirmation with Products Engineering Dept.
your signature and comments. LG Display Co., Ltd
Ver. 1.0 Jul., 17, 2013 0 / 31
LP156WF4
Liquid Crystal Display
Product Specification
Contents
No ITEM Page
COVER 1
CONTENTS 2
RECORD OF REVISIONS 3
1 GENERAL DESCRIPTION 4
2 ABSOLUTE MAXIMUM RATINGS 5
3 ELECTRICAL SPECIFICATIONS
3-1 ELECTRICAL CHARACTREISTICS 6-7
3-2 INTERFACE CONNECTIONS 8
3-3 eDP SIGNAL TIMING SPECIFICATION 9
3-4 SIGNAL TIMING SPECIFICATIONS 10
3-5 SIGNAL TIMING WAVEFORMS 10
3-6 COLOR INPUT DATA REFERNECE 11
3-7 POWER SEQUENCE 12
4 OPTICAL SFECIFICATIONS 13-15
5 MECHANICAL CHARACTERISTICS 16-18
A APPENDIX. LGD PROPOSAL FOR SYSTEM COVER DESIGN 19-23
6 RELIABLITY 24
7 INTERNATIONAL STANDARDS
7-1 SAFETY 25
7-2 Environment 25
8 PACKING
8-1 DESIGNATION OF LOT MARK 26
8-2 PACKING FORM 26
9 PRECAUTIONS 27-28
A APPENDIX. Enhanced Extended Display Identification Data 29-31
Ver. 1.0 Jul., 17, 2013 1 / 31
LP156WF4
Liquid Crystal Display
Product Specification
RECORD OF REVISIONS
EDID
Revision No Revision Date Page Description
ver.
0.0 Mar., 28, 2013 - Preliminary Specification V0.0
0.1 Jun., 21, 2013 13~14 Update the Color Coordinates & Gray Scale V0.1
18 Update the rear view drawing
29~31 Update the EEDID
1.0 Jul., 17, 2013 - Final Specification V1.0
6 Change the VLED Min. Voltage (6V 7V)
13 Change the Contrast Ratio Spec.(800:1 typ. 700:1 typ.)
Ver. 1.0 Jul., 17, 2013 2 / 31
LP156WF4
Liquid Crystal Display
Product Specification
1. General Description
The LP156WF4 is a Color Active Matrix Liquid Crystal Display with an integral LED 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. This TFT-LCD has 15.6 inches diagonally measured active display area with FHD
resolution (1920 horizontal by 1080 vertical 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 brightness of the sub-pixel color is
determined with a 6-bit gray scale signal for each dot, thus, presenting a palette of more than 262,144
colors. The LP156WF4 has been designed to apply the interface method that enables low power, high
speed, low EMI. The LP156WF4 is intended to support applications where thin thickness, low power are
critical factors and graphic displays are important. In combination with the vertical arrangement of the sub-
pixels, the LP156WF4 characteristics provide an excellent flat display for office automation products such as
Notebook PC.
EEPROM Block 1 1920
for Tcon & EDID
TFT-LCD Panel
eDP Timing Control (FHD,AH-IPS)
2 Lane (Tcon) Block
1080
DVCC TCLKs
30
DVCC, AVDD
VCC Power VGH, VGL, GMA
Source Driver Circuit
Block GSP,GSC,GOE
VOUT_LED
VLED LED Driver
LED_EN Block FB1~6
PWM
Control & Data Power EDID signal & Power
General Features
Active Screen Size 15.6 inches diagonal
Outline Dimension 359.5 (H, Typ.) 223.8 (V, Typ.) 3.2 (D, Max.) [mm] (with Bracket & PCB Board)
Pixel Pitch 0.17925 mm x 0.17925 mm
Pixel Format 1920 horiz. By 1080 vert. Pixels RGB strip arrangement
Color Depth 6-bit, 262,144 colors
Luminance, White 330 cd/m2 (Typ. 5 point)
Power Consumption Total 5.6W (Typ.) Logic : 1.0W (Typ. @ Mosaic), B/L : 4.6W (Typ. @VLED12V)
Weight 350g (Max.) / 340g (Typ.)
Display Operating Mode Normally Black
Surface Treatment Glare treatment of the front Polarizer
RoHS Compliance Yes
BFR / PVC / As Free Yes for all
Ver. 1.0 Jul., 17, 2013 3 / 31
LP156WF4
Liquid Crystal Display
Product Specification
2. Absolute Maximum Ratings
The following are maximum values which, if exceeded, may cause faulty operation or damage to the unit.
Table 1. ABSOLUTE MAXIMUM RATINGS
Values
Parameter Symbol Units Notes
Min Max
Power Input Voltage VCC -0.3 4.0 Vdc at 25 5 C
Operating Temperature TOP 0 50 C 1
Storage Temperature HST -20 60 C 1
Operating Ambient Humidity HOP 10 90 %RH 1
Storage Humidity HST 10 90 %RH 1
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.
Note : 2. Storage Condition is guaranteed under packing condition.
90% 80%
60 60%
Wet Bulb 50
Humidity[(%)RH]
Temperature [ ] Storage
40 40%
30 Operation
20
20%
10
0
10%
-20 0 10 20 30 40 50 60 70 80
Dry Bulb Temperature [ ]
Ver. 1.0 Jul., 17, 2013 4 / 31
LP156WF4
Liquid Crystal Display
Product Specification
3. Electrical Specifications
3-1. Electrical Characteristics
The LP156WF4 requires two power inputs. The first logic is employed to power the LCD electronics and to
drive the TFT array and liquid crystal. The second backlight is the input about LED BL with LED Driver.
Table 2. ELECTRICAL CHARACTERISTICS
Values
Parameter Symbol Unit Notes
Min Typ Max
LOGIC :
Power Supply Input Voltage VCC 3.0 3.3 3.6 V 1
Power Supply Input Current Mosaic ICC - 310 360 mA 2
Power Consumption PCC - 1.0 1.2 W 2
Power Supply Inrush Current ICC_P - - 1500 mA 3
Differential Impedance Zm 90 100 110 4
BACKLIGHT : ( with LED Driver)
LED Power Input Voltage VLED 7.0 12.0 21.0 V 5
LED Power Input Current ILED - 385 395 mA 6
LED Power Consumption PLED - 4.6 4.7 W 6
LED Power Inrush Current ILED_P - - 1500 mA 7
PWM Duty Ratio 5 - 100 % 8
PWM Jitter - 0 - 0.2 % 9
PWM Impedance ZPWM 20 40 60
PWM Frequency FPWM 200 - 1000 Hz 10
PWM High Level Voltage VPWM_H 3.0 - 5.3 V
PWM Low Level Voltage VPWM_L 0 - 0.3 V
LED_EN Impedance ZPWM 20 40 60
LED_EN High Voltage VLED_EN_H 3.0 - 5.3 V
LED_EN Low Voltage VLED_EN_L 0 - 0.3 V
Life Time 10,000 - - Hrs 11
Ver. 1.0 Jul., 17, 2013 5 / 31
LP156WF4
Liquid Crystal Display
Product Specification
Note)
1. The measuring position is the connector of LCM and the test conditions are under 25 , fv = 60Hz,
Black pattern.
2. The specified Icc current and power consumption are under
the Vcc = 3.3V , 25 , fv = 60Hz condition and Mosaic pattern.
2. This Spec. is the max load condition for the cable impedance designing.
3. The below figures are the measuring Vcc condition and the Vcc control block LGD used.
The Vcc condition is same as the minimum of T1 at Power on sequence.
3.3V
Rising time
Vcc 90%
0V 10%
0.5ms
4. This impedance value is needed for proper display and measured form eDP Tx to the mating connector.
5. The measuring position is the connector of LCM and the test conditions are under 25 .
6. The current and power consumption with LED Driver are under the Vled = 12.0V , 25 , Dimming of
Max luminance and White pattern with the normal frame frequency operated(60Hz).
7. The below figures are the measuring Vled condition 12.0V
and the Vled control block LGD used. Rising time 90%
VLED control block is same with Vcc control block. VLED
0V 10%
0.5ms
8. The operation of LED Driver below minimum dimming ratio may cause flickering or reliability issue.
9. If Jitter of PWM is bigger than maximum, it may induce flickering.
10. This Spec. is not effective at 100% dimming ratio as an exception because it has DC level equivalent
to 0Hz. In spite of acceptable range as defined, the PWM Frequency should be fixed and stable for
more consistent brightness control at any specific level desired.
11. The life time is determined as the time at which brightness of LCD is 50% compare to that of minimum
value specified in table 7. under general user condition.
Ver. 1.0 Jul., 17, 2013 6 / 31
LP156WF4
Liquid Crystal Display
Product Specification
3-2. Interface Connections
This LCD employs two interface connections, a 30 pin connector used for the module electronics interface and
the other connector used for the integral backlight system.
Table 3. MODULE CONNECTOR PIN CONFIGURATION (CN1)
Pin Symbol Description Notes
1 NC No Connection [Interface Chip]
1. LCD :
2 GND High Speed (Main Link) Ground
TLI, TL2370DP (LCD Controller
3 Lane1_N Complement Signal-Lane 1 Including eDP Receiver.
2. System : TBD or equivalent
4 Lane1_p True Signal-Main Lane 1
* Pin to Pin compatible with eDP
5 GND High Speed (Main Link) Ground
[Connector]
6 Lane0_N Complement Signal-Lane 0
KN38-30S-0.5H, HRS, 30, 0.5
7 Lane0_p True Signal-Main Lane 0 or its compatibles
8 GND High Speed (Main Link) Ground
9 AUX_P True Signal-Auxiliary Channel
[Connector pin arrangement]
10 AUX_N Complement Signal-Auxiliary Channel
11 GND High Speed (Main Link) Ground 30 1
12 VCC LCD Logic and driver power (3.3V Typ.)
13 VCC LCD Logic and driver power (3.3V Typ.)
[LCD Module Rear View]
14 NC No Connection
15 GND LCM Ground
16 GND LCM Ground
17 HPD HPD signal pin
[LGD P-Vcom Share pin]
18 GND LCM Ground (LED Backlight Ground) 1. Pin for P-Vcom : #24, #25
19 GND LCM Ground (LED Backlight Ground) 2. P-Vcom Address : 01010000
20 GND LCM Ground (LED Backlight Ground)
21 GND LCM Ground (LED Backlight Ground)
22 LED_EN LED Backlight On/Off
23 PWM System PWM Signal input for dimming
24 NC No Connection
25 NC No Connection
26 VLED LED Backlight Power (7.0V-21V)
27 VLED LED Backlight Power (7.0V-21V)
28 VLED LED Backlight Power (7.0V-21V)
29 VLED LED Backlight Power (7.0V-21V)
30 NC No Connection
Ver. 1.0 Jul., 17, 2013 7 / 31
LP156WF4
Liquid Crystal Display
Product Specification
3-3. eDP Signal Timing Specifications
3-3-1. DC Specification
The VESA Display Port related AC specification is compliant with the VESA Display Port Standard v1.1a.
Description Symbol Min Max Unit Notes
120 - For high bit rate
Differential peak-to-peak Input voltage VDIFF p-p mV
40 - For reduced bit rate
Rx DC common mode voltage VCM 0 2.0 V -
3-3-2. AC Specification
The VESA Display Port related AC specification is compliant with the VESA Display Port Standard v1.1a.
Description Symbol Min Typ Max Unit Notes
Unit Interval for high bit rate
UI_High_Rate - 370 - ps Range is nominal 350ppm.
(2.7Gbps/lane) DisplayPort Link Rx does not
require local crystal for link
Unit Interval for high bit rate clock generation
UI_Low_Rate - 617 - ps
(1.62Gbps/lane)
V Rx-SKEW-
Lane-to-Lane skew - - 5200 ps -
INTER_PAIR
V Rx-SKEW- - - 100 ps For high bit rate
Lane intra-pair skew
INTRA_PAIR - - 300 ps For reduced bit rate
Ver. 1.0 Jul., 17, 2013 8 / 31
LP156WF4
Liquid Crystal Display
Product Specification
3-4. 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 and specifications of eDP Tx/Rx for its proper operation.
Table 6. TIMING TABLE
ITEM Symbol Min Typ Max Unit Note
DCLK Frequency fCLK - 138.7 - MHz eDP 2 Lane
Period tHP - 2080 -
Hsync Width tWH - 32 - tCLK
Width-Active tWHA - 1920 -
Period tVP - 1111 -
Vsync
Width tWV - 5 - tHP
Width-Active tWVA - 1080 -
Horizontal back porch tHBP - 80 -
tCLK
Data Horizontal front porch tHFP - 48 -
Enable Vertical back porch tVBP - 23 -
tHP
Vertical front porch tVFP - 3 -
Appendix) all reliabilities are specified for timing specification based on refresh rate of 60Hz. However,
LP156WF4 has a good actual performance even at lower refresh rate (e.g. 40Hz or 50Hz) for power saving
mode, whereas LP156WF4 is secured only for function under lower refresh rate. 60Hz at Normal mode, 50Hz,
3-5. Signal Timing Waveforms Condition : VCC =3.3V
High: 0.7VCC
Data Enable, Hsync, Vsync
Low: 0.3VCC
tCLK 0.5 Vcc
DCLK
tHP
Hsync tWH
tHBP tWHA tHFP
Data Enable
tVP
tWV
Vsync tVBP tWVA tVFP
Data Enable
Ver. 1.0 Jul., 17, 2013 9 / 31
LP156WF4
Liquid Crystal Display
Product Specification
3-6. Color Input Data Reference
The brightness of each primary color (red, green and blue) is based on the 6-bit gray scale data input for the
color ; the higher the binary input, the brighter the color. The table below provides a reference for color
versus data input.
Table 5. COLOR DATA REFERENCE
Input Color Data
RED GREEN BLUE
Color
MSB LSB MSB LSB MSB LSB
R5 R4 R3 R2 R1 R0 G5 G4 G3 G2 G1 G0 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
Red 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0
Green 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0
Basic Blue 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1
Color Cyan 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1
Magenta 1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 1
Yellow 1 1 1 1 1 1 1 1 1 1 1 1 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
RED (00) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
RED (01) 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0
RED
RED (62) 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0
RED (63) 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0
GREEN (00) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
GREEN (01) 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0
GREEN ...
GREEN (62) 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 0
GREEN (63) 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0
BLUE (00) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
BLUE (01) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
BLUE
BLUE (62) 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0
BLUE (63) 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1
Ver. 1.0 Jul., 17, 2013 10 / 31
LP156WF4
Liquid Crystal Display
Product Specification
3-7. Power Sequence
T1 T11
90%
Power Supply
VCC T12
10%
T2 T10
eDP Black Video Video From Source Black Video
Display
T3
HPD
from Sink
Sink
Aux CH Aux Channel Operational
T4 T7
Source Link
Idle Valid Video Data Idle or off
Main Link Data Training
T5 T6 T8 T9
T13 T14
90%
Power Supply
VLED 10%
T15 T16
Dimming signal
Of LED B/L PWM
PWM
T17 T18
LED on/off Signal
LED_EN Enabled
Table 6. POWER SEQUENCE TABLE
Required Limits Required Limits
Timing Units Notes Timing Units Notes
By Min Max By Min Max
T1 Source 0.5 10 ms - T10 Source 0 500 ms -
T2 Sink 0 200 ms - T11 Source - 10 ms -
T3 Sink 0 200 ms -
T12 Source 500 - ms
T4 Source - - ms -
T13 Source 0.5 10 ms -
T5 Source - - ms -
T14 Source 0.5 10 ms -
T6 Source - - ms -
T15 Source 10 - ms -
T7 Sink 0 50 ms -
T16 Source 10 - ms -
LGD recommend
T8 Source - - ms
Min 200ms T17 Source 0 - ms -
T9 Source - - ms - T18 Source 0 - ms -
Note) 1. Do not insert the mating cable when system turn on.
-
3. Video Signal, LED_EN and PWM need to be on pull-down condition on invalid status.
4. LGD recommend the rising sequence of VLED after the Vcc and valid status of Video Signal turn on.
Ver. 1.0 Jul., 17, 2013 11 / 31
LP156WF4
Liquid Crystal Display
Product Specification
4. Optical Specification
Optical characteristics are determined after the unit has been and stable for approximately 30 minutes in
a dark environment at 25 C. The values specified are at an approximate distance 50cm from the LCD surface
at a viewing angle of and equal to 0 .
FIG. 1 presents additional information concerning the measurement equipment and method.
FIG. 1 Optical Characteristic Measurement Equipment and Method
LCD Module Pritchard 880 or
Optical Stage(x,y)
equivalent
50cm
Table 9. OPTICAL CHARACTERISTICS
Ta=25 C, VCC=3.3V, fV=60Hz, fCLK= 138.7MHz
Values
Parameter Symbol Units Notes
Min Typ Max
Contrast Ratio CR 400 700 - 1
Surface Luminance, white LWH 280 330 - cd/m2 2
Luminance Variation WHITE - 1.4 1.6 3
Response Time TrR+ TrD - 35 50 ms 4
Color Coordinates
RED RX 0.615 0.645 0.675
RY 0.310 0.340 0.370
GREEN GX 0.296 0.326 0.356
GY 0.600 0.630 0.660
BLUE BX 0.125 0.155 0.185
BY 0.002 0.032 0.062
WHITE WX 0.283 0.313 0.343
WY 0.299 0.329 0.359
Viewing Angle 5
x axis, right( =0 ) r 80 - degree
x axis, left ( =180 ) l 80 - degree
y axis, up ( =90 ) u 80 - degree
y axis, down ( =270 ) d 80 - degree
Gray Scale 6
Ver. 1.0 Jul., 17, 2013 12 / 31
LP156WF4
Liquid Crystal Display
Product Specification
Note)
1. It should be measured in the center of screen(1 Point). Contrast Ratio (CR) is defined mathematically as
Surface Luminance with all white pixels
Contrast Ratio(1 Point) =
Surface Luminance with all black pixels
2. Surface luminance is the average of 5 point across the LCD surface 50cm from the surface with
all pixels displaying white. For more information see FIG 1.
LWH = Average(
3. The variation in surface luminance , The panel total variation ( WHITE) is determined by measuring LN
at each test position 1 through 13 and then defined as following numerical formula.
For more information see FIG 2.
4. Response time is the time required for the display to transition from white to black (rise time, TrR) and
from black to white (Decay Time, TrD). For additional information see FIG 3.
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 surface. For more information see FIG 4.
6. Gray scale specification * fV = 60Hz
Gray Level Luminance [%] (Typ)
L0 0.10
L7 0.91
L15 6.35
L23 14.92
L31 25.58
L39 38.55
L47 53.75
L55 72.95
L63 100
Ver. 1.0 Jul., 17, 2013 13 / 31
LP156WF4
Liquid Crystal Display
Product Specification
FIG. 2 Luminance
H
10mm A
6 7 8 10mm
2 3
B H,V : ACTIVE AREA
V A : H/4 mm
9 1 10
B : V/4 mm
POINTS: 13 POINTS
4 5 13
11 12
FIG. 3 Response Time Active Area
The response time is defined as the following figure and shall be measured by switching the input signal
TrR TrD
%
100
90
Optical
Response
10
0 white white
black
FIG. 4 Viewing angle Normal
Eye Y
= 90 , Up
,
= 180
Left
,
= 0
Right
,
= 270
Down
Ver. 1.0 Jul., 17, 2013 14 / 31
LP156WF4
Liquid Crystal Display
Product Specification
5. Mechanical Characteristics
The contents provide general mechanical characteristics for the model LP156WF4. In addition the figures
in the next page are detailed mechanical drawing of the LCD.
Horizontal 359.5 0.5mm
Outline Dimension Vertical 223.8 0.5mm (with Bracket & PCB Board)
Thickness 3.2mm (max.)
Horizontal 347.6 0.5mm
Bezel Area
Vertical 196.9 0.5mm
Horizontal 344.16 0.3mm
Active Display Area
Vertical 193.59 0.3mm
Weight 350g (Max.) / 340g (Typ.)
Surface Treatment Glare treatment of the front polarizer
Ver. 1.0 Jul., 17, 2013 15 / 31
LP156WF4
Liquid Crystal Display
Product Specification
Note) Unit:[mm], General tolerance: 0.5mm
Ver. 1.0 Jul., 17, 2013 16 / 31
LP156WF4
Liquid Crystal Display
Product Specification
Note) Unit:[mm], General tolerance: 0.5mm
Ver. 1.0 Jul., 17, 2013 17 / 31
LP156WF4
Liquid Crystal Display
Product Specification
LGD Proposal for system cover design.(Appendix)
Gap check for securing the enough gap between LCM and System
1
back cover.
LCM a b
PAD
Back cover
Boss
a : min 0mm
Boss b : min 0.3mm, Max 1.0mm
PAD
Back cover
1.Rear side of LCM is sensitive against external stress, and previous check
about interference is highly needed.
Define 2.In case there is something from system cover comes into the boundary
above,mechanical interference may cause the FOS defects.
(Eg: Ripple, White spot..)
Check if antenna cable is sufficiently apart from T-CON of LCD
2
Module.
T-CON T-CON
OK NG
Define 1.If system antenna is overlapped with T-CON,it might be cause the noise
Ver. 1.0 Jul., 17, 2013 18 / 31
LP156WF4
Liquid Crystal Display
Product Specification
LGD Proposal for system cover design.(Appendix)
3 Checking the path of the System wire
Wire
NG OK
1.If Wire path overlapped with LCM, it is happened white spot,
COF problem, etc.
Define
2.OK Wire path design to system side.
NG Wire path overlapped with LCM.
4 Add pad to Prevent panel crack against external load (push)
Pad Back cover flange
LCM
boss
Boss PAD
Back cover
push push
Pad boss
boss boss
boss
crack
Back cover Back cover
OK NG
1. At flat type LCM, panel is easily cracked at flange area during push,
Define assemble.
2. Add pad, it prevent panel crack
Ver. 1.0 Jul., 17, 2013 19 / 31
LP156WF4
Liquid Crystal Display
Product Specification
LGD Proposal for system cover design.(Appendix)
5 Check the rib or Bracket on back cover
LCM LCM
Back cover Back cover
Rib Bracket
OK OK
LCM LCM
Back cover Back cover
NG CO
1.It is necessary that the height of back cover rib or bracket is higher than
Define LCM height. It can prevent direct compression of panel at LCM edge.
6 Check the gap between front cover and LCM(glass)
a
Front cover
LCM
Back cover
[OK] a 0.3mm
[CO] 0.3mm a 0.1mm
[NG] a 0.1mm
Define 1. Ripple can be happened by little gap between glass and front cover.
Ver. 1.0 Jul., 17, 2013 20 / 31
LP156WF4
Liquid Crystal Display
Product Specification
LGD Proposal for system cover design.(Appendix)
7 Check the rib or Bracket on back cover
Light leakage
Front cover Front cover
LCM LCM
Back cover Back cover
OK NG
1.If it is possible, shrink to apply front cover of white color.
Define
2. White color can caused light leakage
8 Check the wire position(path)
Back cover
OK
Back cover
NG
1. It is necessary that wire is posited out of hook, not posited near hook,.
Define 2. If wire is posited near hook, it can be happened assemble error and
panel crack during assemble front cover
Ver. 1.0 Jul., 17, 2013 21 / 31
LP156WF4
Liquid Crystal Display
Product Specification
LGD Proposal for system cover design.(Appendix)
9 Check mouse pad (touch pad) depth and shape of edge
a
[OK] a 0.3mm
[CO] 0.5mm a 0.3mm
[NG] a 0.5mm
Mouse pad
OK NG
1.Mouse pad step is deep, it is caused panel crack by external load.
Define
2. The edge shape must be smooth.
10 Check the step of keyboard area
Keyboard Keyboard
push push
crack
OK NG
1. The step of keyboard at the side edge of main body, it is caused panel
Define
crack
Ver. 1.0 Jul., 17, 2013 22 / 31
LP156WF4
Liquid Crystal Display
Product Specification
6. Reliability
Environment test condition
No. Test Item Conditions
1 High temperature storage test Ta= 60 C, 240h
2 Low temperature storage test Ta= -20 C, 240h
3 High temperature operation test Ta= 50 C, 50%RH, 240h
4 Low temperature operation test Ta= 0 C, 240h
5 Vibration test (non-operating) Sine wave, 5 ~ 150Hz, 1.5G, 0.37oct/min
3 axis, 30min/axis
6 Shock test (non-operating) - No functional or cosmetic defects following a shock
to all 6 sides delivering at least 180 G in a half sine
pulse no longer than 2 ms to the display module
- No functional defects following a shock delivering
at least 200 g in a half sine pulse no longer than 2
ms to each of 6 sides. Each of the 6 sides will be
shock tested with one each display, for a total of 6
displays
7 Altitude operating 0 ~ 10,000 feet (3,048m) 24Hr
storage / shipment 0 ~ 40,000 feet (12,192m) 24Hr
{ Result Evaluation Criteria }
There should be no change which might affect the practical display function when the display quality
test is conducted under normal operating condition.
Ver. 1.0 Jul., 17, 2013 23 / 31
LP156WF4
Liquid Crystal Display
Product Specification
7. International Standards
7-1. Safety
a) UL 60950-1, Underwriters Laboratories Inc.
Information Technology Equipment - Safety - Part 1 : General Requirements.
b) CAN/CSA-C22.2 No. 60950-1-07, Canadian Standards Association.
Information Technology Equipment - Safety - Part 1 : General Requirements.
c) EN 60950-1, European Committee for Electrotechnical Standardization (CENELEC).
Information Technology Equipment - Safety - Part 1 : General Requirements.
d) IEC 60950-1, The International Electrotechnical Commission (IEC).
Information Technology Equipment - Safety - Part 1 : General Requirements
7-2. Environment
a) RoHS, Directive 2011/65/EU of the European Parliament and of the council of 8 June 2011
Ver. 1.0 Jul., 17, 2013 24 / 31
LP156WF4
Liquid Crystal Display
Product Specification
8. Packing
8-1. Designation of Lot Mark
a) Lot Mark
A B C D E F G H I J K L M
A,B,C : SIZE(INCH) D : YEAR
E : MONTH F ~ M : SERIAL NO.
Note
1. YEAR
Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
Mark A B C D E F G H J K
2. MONTH
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mark 1 2 3 4 5 6 7 8 9 A B C
b) Location of Lot Mark
Serial No. is printed on the label. The label is attached to the backside of the LCD module.
This is subject to change without prior notice.
8-2. Packing Form
a) Package quantity in one box : 20pcs
b) Box Size : 355 X 468 X 310
Ver. 1.0 Jul., 17, 2013 25 / 31
LP156WF4
Liquid Crystal Display
Product Specification
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 the
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 polarizers 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 polarizers. 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.
(10) When handling the LCD module, it needs to handle with care not to give mechanical stress to the PCB
9-2. OPERATING PRECAUTIONS
(1) The spike noise causes the mis-operation of circuits. It should be lower than following voltage :
V= 200mV(Over and under shoot voltage)
(2) Response time depends on the temperature.(In lower temperature, it becomes longer.)
(3) Brightness 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.
(4) 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.
(5) When fixed patterns are displayed for a long time, remnant image is likely to occur.
(6) 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 minimized the
interference.
Ver. 1.0 Jul., 17, 2013 26 / 31
LP156WF4
Liquid Crystal Display
Product Specification
9-3. ELECTROSTATIC DISCHARGE CONTROL
Since a module is composed of electronic circuits, it is not strong to electrostatic discharge. Make certain that
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 C and 35 C at normal humidity.
(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) 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) The protection film is attached to the polarizer with a small amount of glue. If some stress is applied
to rub the protection film against the polarizer during the time you peel off the film, the glue is apt to
remain on the polarizer.
Please carefully peel off the protection film without rubbing it against the polarizer.
(3) When the module with protection film attached is stored for a long time, sometimes there remains a
very small amount of glue still on the polarizer after the protection film is peeled off.
(4) You can remove the glue easily. When the glue remains on the polarizer surface or its vestige is
recognized, please wipe them off with absorbent cotton waste or other soft material like chamois
soaked with normal-hexane.
Ver. 1.0 Jul., 17, 2013 27 / 31
LP156WF4