LG.Philips LCD LP141X7-A2IB Specification

LP141X7

Liquid Crystal Display

Product General Specification

1. General Description

The LP141X7 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 white mode. This TFT-LCD has a 14.1 inches 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 LP141X7 has been designed to apply the interface metho d that enables low power, high speed, low EMI.
Flat Link must be used as a LVDS(Low Voltage Differential Signaling) chip.
The LP141X7 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 LP141X7
characteristics provide an excellent flat panel display for office automation products such as Notebook PC.

Timing

Control

Block

Column driver circuit

CN1

FlatLink interface

Power

Block

Row Driver circuit

TFT-LCD

(1024×768)

CN

2

General Features

Active screen size 14.1 inches(35.814cm) diagonal
Outline dimensions 298.5(H) 227(V) 5.3(D) mm (Typ.)
Pixel pitch 0.279 mm 0.279 mm
Pixel format 1024 horiz. by 768 vert. pixels
RGB stripe arrangement
Color depth 6-bit, 262,144 colors
Luminance,White 150 cd/m2 (Typ.)
Power Consumption Total 4.67Watt(T yp.)
Weight 427.5g (T yp.)
Display operating mode Transmissive mode, normally white
Surface treatments Hard coating (3H),
Anti-glare treatment of the front polarizer

Ver 0. 3 AUG 25 , 2000 Page 1/6

Backlight Ass’y

LP141X7

Liquid Crystal Display

Product General Specification

2. Electrical Specifications
2-1. Electrical Characteristics

The LP141X7 requires two power inputs. One is employed to power the LCD electronics and to drive the TFT
array and liquid crystal. The second input which powers the CCFL, is typically generated by an inverter. The
inverter is an external unit to the LCD.

Parameter Symbol Values Units Notes
Min. Typ. Max.
MODULE:
Power Supply Input Voltage
Power Supply Input Current
Differential Impedance
Power Consumption
Rush Current
Duration of rush current

LAMP
Operating Voltage
Operating Current
Established Starting Voltage
at 25
at 0
Operating Frequency
Discharge Stabilization Time
Power Consumption
Life Time

Note)The design of the inverter must have specifications for the lamp in LCD Assembly.

The performance of the Lamp in LCM,for example life time or brightness,is extremely influenced by the
characteristics of the DC-AC Inverter.So all the parameters of an inverter should be carefully designed
so as not to produce too much leakage current from high - voltage output of the inverter.
When you design or order the inverter,please make sure unwanted lighting caused by the mismatch of
the lamp and the inverter(no lighting,flicker,etc) never occurs.When you confirm it,the LCD Assembly
should be operated in the same condition as installed in your instrument.
Notes: 1. The specified current and power consumption are under the Vcc = 3.3V , 25 , fv = 60Hz condition
whereas full black pattern is displayed and fv is the frame frequency.

2. This impedance value is needed to proper display and measured from LVDS Tx to the mating
connector.

3. The variance of the voltage is 10%.

4. The voltage above V
Otherwise,the lamps may not be turned on.

5. The output of the inverter must have symmetrical(negative and positive) voltage waveform and
symmetrical current waveform.(Unsymmetrical ratio is less than 10%) Please do not use the inverter
which has unsymmetrical voltage and unsymmetrical current and spike wave.
Lamp frequency may produce interference with horizontal synchronous frequency and as a result
this may cause beat on the display.Therefore lamp frequency shall be as away as possible from the
horizontal synchronous frequency and from its harmonics in order to prevent interference.

6.Let’s define the brightness of the lamp after being lighted for 5 minutes as 100%.
Ts is the time required for the brightness of the center of the lamp to be not less than 95%.

7. The lamp power consumption shown above does not include loss of external invert er.

8. The life time is determined as the time at which brightness of lamp is 50% compared to that of initial
value at the typical lamp current on condition of continuous operating at 25 2.

Ver 0. 3 AUG 25 , 2000 Page 2/6

Table 1 ELECTRICAL CH ARACTERISTICS:

V

CC

I

CC

Z

m

Pc

I

RUSH

T

RUSH

V

L

IL

Vs

F

L

T

s

PL

should be applied to the lamps for more than 1second for start -up.

s

3.0

-

90

-

-

-

680(6mA)

3.0

-

-

45

-

10,000

3.3

0.315
100

1.04

1.0

-

725(5mA)

5.0

-

-

58

3.63

3.6

0.370
110

1.22

1.5
30

875(3mA)

6.0

1170
1450

80

3

4.08

-

Vdc

A

Ohm

W

A

ms

Vrms

rms

mA

Vrms
Vrms

kHz

Minutes

W

Hours

1
2
1

3
4

5
6
7
8

6mA