Product Specification

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LP171WU1

Liquid Crystal Display

Ver. 1.0

Mar, 19, 2007

3. Electrical Specifications

3-1. Electrical Characteristics

The LP171WU1 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 2. ELECTRICAL CHARACTERISTICS

9

5.26

4.84

-

P

BL

Power Consumption

8

V

RMS

V

RMS

1300

1500

Vs

Established Starting Voltage

at 25℃

at 0 ℃

LAMP :

3

V

RMS

930

(3.0mA)

745

(6.5mA)

710

(6.8mA)

V

BL

Operating Voltage

4

mA

RMS

6.8

6.5

3.0

I

BL

Operating Current

7

kHz

70

60

40

f

BL

Operating Frequency

5

Min

3

-

-

Ts

Discharge Stabilization Time

6

Hrs

-

-

15,000

Life Time

2

Ohm

110

100

90

Zm

Differential Impedance

1

Watt

2.70

2.15

-

Pc

Power Consumption

V

DC

3.6

3.3

3.0

VCC

Power Supply Input Voltage

1

mA

750

650

I

CC

Power Supply Input Current

MODULE :

Parameter

Symbol

Max

Typ

Min

Notes

Unit

Values

Note)

1. The specified current and power consumption are under the Vcc = 3.3V , 25℃, fv = 60Hz condition

whereas Mosaic pattern is displayed and fv is the frame frequency.

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

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

4. The typical operating current is for the typical surface luminance (L

5. 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%.

6. 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.

7. 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.

8. The voltage above VS should be applied to the lamps for more than 1 second for start-up. Otherwise, the

lamps may not be turned on. The used lamp current is the lamp typical current.

9. The lamp power consumption shown above does not include loss of external inverter.

The applied lamp current is a typical one.