LG.Philips LCD LP150X04-A2M1 Specification

LP150X04

Liquid Crystal Display

Product Specification

1. General Description

The LP150X04-A2M1 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 15.0 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 LP150X04-A2M1 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 LP150X04-A2M1 is intended to support applications where thin thickness, low power are critical factors and graphic display are important. In combination with the vertical arrangement of the sub-pixels, the LP150X04-A2M1 characteristics provide an excellent flat display for office automation products such as Notebook PC.

CN1

General Features

Active screen size Outline Dimension Pixel Pitch

Pixel format Color depth Luminance, white Power Consumption Weight Display operating mode

Timing

Control

Block

FlatLink interface

Power

Block

Row Driver circuit

Column driver circuit

TFT-LCD

(1024×768)

Backlight Ass’y

15.0 inches(38.1cm) diagonal

315.8(H) x 240.5(V) x 6.5(D) mm(Typ.)

0.297 mm x 0.297mm 1024 horiz. By 768 vert. Pixels RGB stripes arrangement

6-bit, 262,144 colors

200 cd/m

(Typ.)

4.69Watt (typ) 590g(Typ.)

Transmissive mode, normally white

Surface treatments

Hard coating(3H) Anti-glare treatment of the front polarizer

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LP150X04

Liquid Crystal Display

Product Specification

2. Electrical Specifications

The LP150X04-A2M1 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.

Table 1. ELECTRICAL CHARACTERISTICS

Parameter Symbol

Units Notes

Min. Typ. Max.

MODULE :

Values

Power Supply Input Voltage Power Supply Input Current Differential Impedance Power Consumption Rush Current

RUSH

3.0

3.3

0.24 100

0.79

1.5

3.6

110

1.8

Vdc

ohm

Watts

LAMP :

Operating Voltage Operating Current Established Starting Voltage

at 25 ¶C

at 0 ¶C Operating Frequency Discharge Stabilization Time Power Consumption Life Time

630

(6.5mA)

2.0

10,000

650

(6.0mA)

6.0

3.9

850

(3.0mA)

6.5

1130 1325

4.3

RMS

kHz

Minutes

Watts

Hrs

Note : The design of the inverter must have specification 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 you instrument.

1. The specified current and power consumption are under the V whereas Mosaic pattern is displayed and f

is the frame frequency.

2. This impedance value is needed to proper display and measured from LVDS T

=3.3V, 25¶C,fV=60Hz condition

to the mating connector.

3. The duration of rush current is about 20ms.

4. The variance of the voltage is ± 10%.

5. The voltage above V

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

Otherwise, the lamps may not be turned on.

1 2 1 3

4 5

6 7 8 9

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LP150X04

Liquid Crystal Display

Product Specification

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

7. It is defined the brightness of the lamp after being lighted for 5 minutes as 100%. T

is the time required for the brightness of the center of the lamp to be not less than 95%.

8. The lamp power consumption shown above does not include loss of external inverter. The used lamp current is the lamp typical current.

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

10. Do not attach a conducting tape to lamp connecting wire. If the lamp wire attach to a conducting tape, TFT-LCD Module has a low luminance and the inverter has abnormal action. Because leakage current is occurred between lamp wire and conducting tape.

11. Requirements for a system inverter design, which is intended to have a better display performance, a better power efficiency and a more reliable lamp, are following.

It shall help increase the lamp lifetime and reduce leakage current.

a. The asymmetry rate of the inverter waveform should be less than 10%. b. The distortion rate of the waveform should be within 2 10%. * Inverter output waveform had better be more similar to ideal sine wave.

I p

I -p

* Asymmetry rate:

| I

–I –p| / I

rms

* Distortion rate

(or I –p) / I

rms

* 100%

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