LG LP-141X6-A11B Service manual

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SPECIFICATIONS

LP141X6-A1IB LIQUID CRYSTAL DISPLAY

DATA DISPLAY AG

TITLE: LP141X6-A1IB REV. 1 PAGE 1 OF 22

LP141X6-A1IB

14.1“ XGA TFT LCD

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PRELIMINARY

SPECIFICATION

The information given in this document is carefully checked and believed to be reliable. Data Display reserves the
right to make changes in product or specification at any time and without further notice. Data Display products are
not intended for use in systems in which failures of product could result in personal injury. All mentioned trademarks
are registered trademarks of their owner. LG.Philips LCD: Rev. 0.2 Oct.6, 1999

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interface

SPECIFICATIONS

LP141X6-A1IB LIQUID CRYSTAL DISPLAY

1. GENERAL DESCRIPTION

The LP141X6-A1IB is a Color Active Matrix Liquid Crystal Display with an integral
Cold Cathode Fluorescent Lamp(CCFL) back light 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 a 14.1 inch diagonally measured
active display area with XGA resolution(768 vertical by 1024 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 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 LP141X6-A1IB has been designed to apply the
interface method that enables low power, high speed low EMI. Flat Link must be
used as a LVDS(Low Voltage Differential Signaling) chip. The LP141X6-A1IB 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 LP141X6-A1IB characteristics provide an excellent flat panel
display for office automation products such as mobile industrial computers.

TITLE: LP141X6-A1IB REV. 1 PAGE 2 OF 22

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General Features

Active screen size 14.1 inches (33.78 cm) diagonal
Outline dimensions 298.5 (H) × 227.5 (V) × 5.7 (D) mm (typ)
Pixel pitch 0.279 mm × 0.279 mm
Pixel format 1024 horiz. By 768 vert. Pixel RGB stripe arrangement
Color depth 6-bit, 262,144 colors
Luminance, White 150 cd/m
Power Consumption Total 4.54 Watt (typ)
Weight 500g (typ)
Display operating mode transmissive mode, normally white
Surface treatments hard coating(3H),
anti-glare treatment of the front polarizer

CN1

CN2

FlatLink

Timing

Control

Block

Power

Block

2

(typ)

Column driver circuit

TFT-LCD

(1024××××768)

Row Driver circuit

Backlight Ass’y

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SPECIFICATIONS

LP141X6-A1IB LIQUID CRYSTAL DISPLAY

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

Power Input Voltage
Operating Temperature
Storage Temperature

V

CC

TOP

T

ST

Note 1: Temperature at 5 mm above display center of LCD Module.
Ta ≤ 40°C: 90 % RH max
Ta > 40°C: Absolute Humidity shall be less than Ta = 40° 90 % RH.
These shall be no dew condensation.
Note 2: Humidity Min. 5% RH, Max. 90% RH

3. ELECTRICAL SPECIFICATIONS

TITLE: LP141X6-A1IB REV. 1 PAGE 3 OF 22

Values

Min. Max.

-0.3
0

-20

+3.6

+50
+60

Units Notes

Vdc

°C
°C

at 25°

1,2
1,2

3.1 Electrical Characteristics

The LP141X6-A1IB requires two power inputs. One is employed to power the LCD

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electronics and to drive the TFT array and liquid crystal. The second input which

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powers the CCFL, is typically generated by an inverter. The inverter is an external
unit to the LCD.

Table 2 ELECTRICAL CHARACTERISTICS

Parameter Symbol

Min. Typ. Max.

MODULE:
Power Supply Input Voltage
Power Supply Input Current
Differential Impedance
Power Consumption
Rush current

LAMP
Operating Voltage
Operating Current
Established Starting
Voltage
at 25°C
at 0°C
Operating Frequency
Power Consumption
Half Life Time

V

I

CC

Zm

P

I

RUSH

V

IBL

f

PBL

CC

BL

c

BL

3.0

-

90

-

-

680

3.0

-

-

40

-

10,000

Values

3.3

0.275
100

0.91

1.0

725

5.0

-

-

60

3.63

15,000

3.6

0.315
110

1.04

1.5

850

6.0

1170
1450

80

4.08

-

Units Notes

Vdc

A

ohm

Watts

A

V

RMS

mA

V

RMS

V

RMS

kHz

Watts

Hrs

1
2
1
3

4

5

6
7

Notes 1: The specified current and power consumption are under the Vcc = 3.3V,

25°C, fv = 60 Hz condition whereas Black pattern is displayed.

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SPECIFICATIONS

LP141X6-A1IB LIQUID CRYSTAL DISPLAY

Notes 2: This impedance value is needed to proper display and measured form

LVDS Tx to the mating connector.
Notes 3: The duration of rush current is about 20 ms.
Notes 4: The variance of the voltage is ± 10 %.
Notes 5: The transformer output voltage in the inverter must be high considering to

the loss of the ballast capacitor in the inverter.
Notes 6: The lamp power consumption shown above does not include loss of

external inverter.
Notes 7: The life time is determined as the time at which brightness of lamp is 50 %

compare to that of initial value at the typical lamp current

TITLE: LP141X6-A1IB REV. 1 PAGE 4 OF 22

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SPECIFICATIONS

LP141X6-A1IB LIQUID CRYSTAL DISPLAY

3.2 Interface Connections

This LCD employs two interface connections, a 20 pin connector is used for the
module electronics and the other connector is used for the integral backlight system.
The electronics interface connector is a model FI-SEB-20P-HF manufactured by JAE
or equivalent. The pin configuration for the connector is shown in the table below.

Table 3 MODULE CONNECTOR PIN CONFIGURATION (LVDS) [CN1]

Pin Symbol Description Notes

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20

VCC

VCC
GND
GND

A0M

A0P

GND

A1M

A1P

GND

A2M

A2P

GND

CLKM

CLKP

GND

NC
NC

GND

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GND

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Power (3.3V)
Power (3.3V)

Ground

Ground
Difference Signal
Difference Signal

Ground
Difference Signal
Difference Signal

Ground
Difference Signal
Difference Signal

Ground
Difference Signal
Difference Signal

Ground

No Connection
No Connection

Ground

Ground

The backlight interface connector is a model BHSR-02VS-1, manufactured by JST.
The mating connector part number is SM02B-BHSS-1 or equivalent. The pin
configuration for the connector is shown in the table below.

Table 4 BACKLIGHT CONNECTOR PIN CONFIGURATION [CN2]

Pin Symbol Description Notes

1
2

Notes 1: The high voltage input terminal is colored white.
Notes 2: The low voltage input terminal is colored black.

HV

LV

TITLE: LP141X6-A1IB REV. 1 PAGE 5 OF 22

1. Interface chips

1.1 LCD: KZ4E038C12CFP (Thine)
(THC63LVDF64A core + Timing Controller)

1.2 System: THC63LVDM63A (Thine)
* Pin to pin compatible with TI LVDS

2. Connector

2.1 LCD: GT122-20P-R (LG CABLE)

2.2 Mating: FI-WEB21P-HF (JAE)

2.3 Connector pin arrangement

No. 1-20

CN1

Viewing on Display side

High voltage input

Low voltage input

1
2

CN2

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LP141X6-A1IB LIQUID CRYSTAL DISPLAY

Table 5 REQUIRED SIGNAL ASSIGNMENT FOR FLATLINK TRANSMITTER

Pin # Pin Name Require Signals Pin # Pin Name Require Signals

1 D4 R4 48 D3 R3

2 Vcc Vcc 47 D2 R2

3 D5 R5 46 GND GND

4 D6 G0 45 D1 R1

5 GND GND 44 D0 R0

6 D7 G1 43 NC NC

7 D8 G2 42 LVDS GND LVDS GND

8 Vcc Vcc 41 Y0M A0M

9 D9 G3 40 Y0P A0P

10 D10 G4 39 Y1M A1M

11 GND GND 38 Y1P A1P

12 D11 G5 37 LVDS Vcc LVDS Vcc

13 D12 B0 36 LVDS GND LVDS GND

14 NC NC 35 Y2M A2M

15 D13 B1 34 Y2P A2P

16 D14 B2 33 CLKOUTM CLKM

17 GND GND 32 CLKOUTP CLKP

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18 D15 B3 31 LVDS GND LVDS GND

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19 D16 B4 30 PLLGND PLL GND

20 D17 B5 29 PLLVcc PLL Vcc

21 Vcc Vcc 28 PLLGND PLL GND

22

23 D19 VSYNC 26 CLKIN Dclk

24 GND GND 25 D20 DE (Data Enable)

Notes: Refer to LVDS Transmitter Data Sheet for detail descriptions.

D18 HSYNC 27 SHDN SHDN

TITLE: LP141X6-A1IB REV. 1 PAGE 6 OF 22

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SPECIFICATIONS

LP141X6-A1IB LIQUID CRYSTAL DISPLAY

3.3 Signal Timing Specificat ions

This is the signal timing required at the input of the LVDS Transmitter. All of the
interface signal timing should be satisfied with the following specifications for it’s
proper operation.

Table 6 Timing Table

ITEM SYMBOL MIN. TYP. MAX. UNIT NOTE

Dclk Period t

Hsync Period tHP 1206 1344 1364

Width-Active tWH 16 136 240

Vsync Period tVP 780 806 830

Frequency fV - 60 - Hz
Width-Active tWV 1 6 24

DE

( Data

Enable )

Horizontal

Back Porch

Horizontal

Front Porch

Vertical

Back Porch

Vertical

Front Porch

t

t

t

t

CLK

HBP

HFP

VBP

VFP

TITLE: LP141X6-A1IB REV. 1 PAGE 7 OF 22

14.7 15.4 16.1 ns 65MHz(Typ)

10 160 -

10 24 -

2 29 -

1 3 -

t

CLK

t

HP

t

HP

t

CLK

t

HP

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