LG LP156WHB-TLA1 Schematics

(

) Preliminary Specification

◆

( ) Final Specification

Title 15.6” HD TFT LCD

LP156WHB

Liquid Crystal Display

Product Specification

SPECIFICATION

FOR

APPROVAL

Customer Asus

MODEL

SIGNATURE APPROVED BY

/

/

/

SUPPLIER LG Display Co., Ltd.

*MODEL LP156WHB

Suffix TLA1

*When you obtain standard approval,
please use the above model name without suffix

APPROVED BY

APPROVED BY

J. S. Park / Manager

REVIEWED BY

REVIEWED BY

S. W. Kim / Manager

PREPARED BY

PREPARED BY

K. T. Baek / Engineer
Y. C. Jung / Engineer

SIGNATURE

SIGNATURE

Please return 1 copy for your confirmation with
your signature and comments.

Ver. 0.0 Jan. 06, 2014

Products Engineering Dept.

LG Display Co., Ltd

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LP156WHB

Liquid Crystal Display

Product Specification

Contents

RECORD OF REVISIONS…………………………………………………………………… 3

1. GENERAL DESCRIPTION……………………………………………………………… 4

2. ABSOLUTE MAXIMUM RATINGS……………………………………………………... 5

3. ELECTRICAL SPECIFICATIONS………………………………………….…………… 6

3-1. LCD ELECTRICAL CHARACTREISTICS…..…………………………………………..... 6

3-2. LED BACKLIGHT ELECTRICAL CHARACTREISTICS………………………………..... 6

3-3. INTERFACE CONNECTIONS……………………………………………………………… 8
3-4. LVDS SIGNAL TIMING SPECIFICATION………………………………………………… 9
3-5. SIGNAL TIMING SPECIFICATIONS………………………………………………………. 11
3-6. SIGNAL TIMING WAVEFORMS…………………………………………………………… 11
3-7. COLOR INPUT DATA REFERENCE……………………………………………………… 12
3-8. POWER SEQUENCE……………………………………………………………………….. 13

4. OPTICAL SPECIFICATIONS…………………………………………………………… 14

5. MECHANICAL CHARACTERISTICS…………………………………………………. 17

6. RELIABLITY……………………………………………………………………………… 20

7. INTERNATIONAL STANDARDS………………………………………………………. 21

7-1. SAFETY…………………………………………………………………..………………...… 21

7-2. ENVIRONMENT……………………………………………………………..…………...…. 21

8. PACKING………………………………………………………………………...……….. 22

8-1. DESIGNATION OF LOT MARK………………………………………………….………… 22
8-2. PACKING FORM…………………………………………………………………..………… 22

9. PRECAUTIONS…………………………………………………………………………… 23

APPENDIX A. LGD PROPOSAL FOR SYSTEM COVER DESIGN………………...……………..……. 25
APPENDIX B. ENHANCED EXTENDED DISPLAY IDENTIFICAION DATA….…………………….….. 30

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Product Specification

Record of Revisions

LP156WHB

Liquid Crystal Display

Revision No Revision Date Page Description

0.0 Jan. 06. 2014 All First Draft (Preliminary Specification) 0.0

EDID

version

Ver. 0.0 Jan. 06, 2014

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LP156WHB

Liquid Crystal Display

Product Specification

1. General Description

The LP156WHB 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 white mode. This TFT-LCD has 15.6 inches diagonally measured active display area with HD
resolution (1366 horizontal by 768 vertical pixel array). Each pixel is divided into Red, Green and Blue sub­pixels 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 LP156WHB has been designed to apply the interface method that enables low power, high
speed, low EMI. The LP156WHB 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 sub­pixels, the LP156WHB characteristics provide an excellent flat display for office automation products such
as Notebook PC.

I2C

EEPROM

1

for EDID & T-Con

User connector

LVDS

I2C

Timing

Data Signal

TFT-LCD Panel

(1366 x RGB x 768)

Controller

768

Gate

Signal

Power Block

LED Driver

DVCC, AVDD ,Vcom,

Gamma, Gate Signal

VOUT_LED

LED Cathode

Source Driver

LED Backlight

40

Pin

DVCC

VCC

VLED

LED_EN

PWM

General Features

Active Screen Size 15.6 inches diagonal
Outline Dimension
Pixel Pitch 0.252 mm X 0.252 mm
Pixel Format 1366 horiz. by 768 vert. Pixels RGB strip arrangement
Color Depth 6-bit, 262,144 colors
Luminance, White 200 cd/m2(Typ.)
Power Consumption Total 2.8W (Typ.) Logic : 0.7W (Typ. @ Mosaic), B/L : 2.1W (Typ.)
Weight 400g (Max.)
Display Operating Mode Normally white
Surface Treatment Glare treatment (3H) of the front Polarizer
RoHS Compliance Yes
BFR / PVC / As Free Yes for all

359.5(H, Typ.) × 217.2(V, Typ.) × 3.80(D, Max.) [mm] (with PCBA)

1366 1

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LP156WHB

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

Parameter Symbol

Units Notes

Min Max

Values

Power Input Voltage
Operating Temperature
Storage Temperature
Operating Ambient Humidity
Storage Humidity

VCC -0.3 4.0 V

TOP 0 50 C 1
HST -20 60 C 1
HOP 10 90 %RH 1
HST 10 90 %RH 1

DC

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%

Humidity[(%)RH]

Storage

40%

Operation

20%

10%

Wet Bulb
Temperature [℃]

20

10

0

60

50

40

30

at 25  2C

-20

10

20 30 40 50

60 70 80 0

Dry Bulb Temperature [℃]

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Product Specification

3. Electrical Specifications

3-1. LCD Electrical Characteristics

Table 2. LCD ELECTRICAL CHARACTERISTICS

LP156WHB

Liquid Crystal Display

Parameter Symbol

Unit Notes

Min Typ Max

Power Supply Input Voltage VCC 3.0 3.3 3.6 V 1

Values

Permissive Power Supply Input Ripple

VCCrp

- - 100 mV

p-p

Power Supply Input Current Mosaic ICC - 220 255 mA
Power Consumption PCC - 0.7 0.8 W
Power Supply Inrush Current ICC_P - - 1.5 A 3
Differential Impedance ZLVDS 90 100 110 Ω

Note)

1. The measuring position is the connector of LCM and the test conditions are under 25℃, fv = 60Hz

2. The specified ICC current and power consumption are under the VCC = 3.3V , 25℃, fv = 60Hz condition
and Mosaic pattern.

2

3. The VCC rising time is same as the minimum of T1 at Power on sequence.

Rising time
V

CC

0V

10%

90%

3.3V

0.5ms

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Product Specification

3-2. LED Backlight Electrical Characteristics

Table 3. LED B/L ELECTRICAL CHARACTERISTICS

LP156WHB

Liquid Crystal Display

Parameter Symbol

Unit Notes

Min Typ Max

LED Power Input Voltage VLED 7.0 12.0 21.0 V 1
LED Power Input Current ILED - 175 193 mA

2

LED Power Consumption PLED - 2.1 2.3 W
LED Power Inrush Current ILED_P - - 1.5 A 3

Values

PWM Duty Ratio 5 - 100 %

4
PWM Jitter 0 - 0.2 % 5
PWM Frequency FPWM

PWM

High Level Voltage V
Low Level Voltage V

PWM_H

PWM_L

200 - 1000 Hz

2.5 - 3.6 V
0 - 0.3 V

6

High Voltage VLED_EN_H 2.5 - 3.6 V

LED_EN

Low Voltage VLED_EN_L 0 - 0.3 V

Life Time 12,000 - - Hrs 7

Note)

1. The measuring position is the connector of LCM and the test conditions are under 25℃.

2. The current and power consumption with LED Driver are under the V

= 12.0V , 25℃, PWM Duty 100%

LED

and White pattern with the normal frame frequency operated(60Hz).

3. The V

rising time is same as the minimum of T13 at Power on sequence.

LED

12.0V

Rising time

90%

VLED

0V

10%

0.5ms

4. The operation of LED Driver below minimum dimming ratio may cause flickering or reliability issue.

5. If Jitter of PWM is bigger than maximum, it may induce flickering.

6. 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.

7. 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.

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Liquid Crystal Display

Product Specification

3-3. Interface Connections

Table 4. MODULE CONNECTOR PIN CONFIGURATION (CN1)

Pin Symbol Description Notes

1 NC No Connection
2 VCC LCD Logic and driver power (3.3V Typical)
3 VCC LCD Logic and driver power (3.3V Typical)
4 V EDID DDC power (3.3V)
5 NC No Connection
6 CLK EDID DDC clock
7 DATA EDID DDC data
8 X0- Negative LVDS differential data input for pixel

9 X0+ Positive LVDS differential data input for pixel
10 GND High speed ground
11 X1- Negative LVDS differential data input for pixel
12 X1+ Positive LVDS differential data input for pixel
13 GND High speed ground
14 X2- Negative LVDS differential data input for pixel
15 X2+ Positive LVDS differential data input for pixel
16 GND High speed ground
17 XC- Negative LVDS differential clock input for pixel
18 XC+ Positive LVDS differential clock input for pixel
19 GND High speed ground
20
21
22
23
24
25
26
27
28
29
30

NC
NC

GND High Speed Ground

NC
NC

GND High Speed Ground

NC
NC

GND High Speed Ground

NC
NC

No Connection
No Connection

No Connection
No Connection

No Connection
No Connection

No Connection
No Connection

31 BL_GND LED Backlight ground
32 BL_GND LED Backlight ground
33 BL_GND LED Backlight ground
34 NC No Connection
35 BL PWM System PWM signal input for dimming
36 BL ENABLE LED Backlight on/off control
37 NC No Connection
38 VLED LED Backlight power (12V Typical)
39 VLED LED Backlight power (12V Typical)
40 VLED LED Backlight power (12V Typical)

[Connector]
LSM, GT05Q-40S-H10
or equivalent

[Connector pin arrangement]
Pin 40 Pin 1

[EDID & LGD P-Vcom Share pin]

1. Pin for EDID & P-Vcom : #6, #7

2. P-Vcom Address : 0101000x

LP156WHB

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Product Specification

3-3. LVDS Signal Timing Specifications

3-3-1. DC Specification

LP156WHB

Liquid Crystal Display

LVDS -

LVDS +

0V

|VID|

# |VID| = |(LVDS+) – (LVDS-)|
# VCM = {(LVDS+) + (LVDS-)}/2

V

CM

V

IN_MAXVIN_MIN

VDD=1.8V

Description Symbol Min Typ Max Unit Notes

LVDS Differential Voltage |VID| 100 - 600 mV ­LVDS Common mode Voltage V
LVDS Input Voltage Range V

CM

IN

|VID| /2 1.2 VDD- |VID|/2 V -

0.3 - VDD V -

3-3-2. AC Specification

T

clk

LVDS Clock

LVDS Data

t

= 1/T

)

clk

t

SKEW

SKEW (Fclk

1) 85MHz > Fclk ≥ 65MHz : -400 ~ +400

2) 65MHz > Fclk ≥ 25MHz : -600 ~ +600

Description Symbol Min Max Unit Notes

t

SKEW

- 400 + 400 ps

LVDS Clock to Data Skew Margin

t

SKEW

LVDS Clock to Clock Skew Margin (Even
to Odd)

Maximum deviation
of input clock frequency during SSC

Maximum modulation frequency
of input clock during SSC

t

SKEW_EO

F

DEV

F

MOD

Ver. 0.0 Jan. 06, 2014

- 600 + 600 ps

- 1/7 + 1/7 T

85MHz > Fclk ≥

65MHz

65MHz > Fclk ≥

clk

-

± 3

% -

25MHz

- 200 KHz -

-

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t

SKEW_EO

LP156WHB

Liquid Crystal Display

Product Specification

LVDS Odd Clock

LVDS Even Clock

LVDS Even Data

Freq.

F

max

F

center

F

min

3-3-3. Data Format

T

clk

T

clk

< Clock skew margin between channel >

1

F

MOD

< Spread Spectrum >

F

center

* F

Time

DEV

1) LVDS 1 Port

Tclk

RCLK+

RA+/-

RB+/-

RC+/-

R3 R2

G4 G3

B5 B4

Tclk *4/7

R1 R0

G2 G1

B3 B2

Tclk *1/7

G0 G5 R4 R3 R2 R1 R0

B1 B0 G5 G4 G3 G2 G1

DE V

SYNC HSYNC

Previous (N-1)th Cycle Current (N)th Cycle Next (N+1)th Cycle

< LVDS Data Format >

Ver. 0.0 Jan. 06, 2014

Tclk *3/7

B5 B4 B3 B2

G0

B1

DE

R5 R4

B0 G5

V

SYNC HSYNC

MSB R5

R4
R3
R2
R1

LSB R0

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LP156WHB

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 LVDS Tx/Rx for its proper operation.

Table 4. TIMING TABLE

ITEM Symbol Min Typ Max Unit Note

DCLK Frequency f

Period t

Hsync

Width tWH
Width-Active t
Period tVP

Vsync

Width tWV
Width-Active t
Horizontal back porch t

Data

Enable

Horizontal front porch t
Vertical back porch t
Vertical front porch t

CLK

HP

WHA

WVA

HBP

HFP

VBP

VFP

- 76.32 -

1594 1610 1626

24 32 40

1366

787 790 793

4 5 6

768

160 164 168

44 48 52
13 14 15

2 3 4

MHz

t

CLK

t

HP

t

CLK

t

HP

Notice. all reliabilities are specified for timing specification based on refresh rate of 60Hz. However,
LP156WHB has a good actual performance even at lower refresh rate (e.g. 40Hz or 50Hz) for power saving
Mode, whereas LP156WHB is secured only for function under lower refresh rate. 60Hz at Normal mode, 50Hz,
40Hz at Power save mode. Don’t care Flicker level (Power save mode).

3-5. Signal Timing Waveforms

Condition : VCC =3.3V

Data Enable, Hsync, Vsync

High: 0.7VCC
Low: 0.3VCC

DCLK

tCLK

0.5 Vcc

tHP

Hsync

tWH

tWHA

Data Enable

t

HBP

tVP

tWV

Vsync

Data Enable

Ver. 0.0 Jan. 06, 2014

t

VBP

tWVA

t

HFP

t

VFP

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