LP140WH1 datasheet(13/34 Pages) LG

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Product Specification

13 / 33

LP140WH1

Liquid Crystal Display

Ver.1.0

May. 22, 2009

3-7. Power Sequence

Note)

1. Valid Data is Data to meet “3-3. LVDS Signal Timing Specifications”

2. Please avoid floating state of interface signal at invalid period.

3. When the interface signal is invalid, be sure to pull down the power supply for LCD VCC to 0V.

4. LED power must be turn on after power supply for LCD and interface signal are valid.

Table 6. POWER SEQUENCE TABLE

Parameter

Value

Units

Min.

Typ.

Max.

0.5

(ms)

200

(ms)

200

(ms)

400

(ms)

Interface Signal,

(LVDS Signal of Transmitter)

LED_En

Power Supply For LCD

VCC

90%

10%

90%

Valid Data

OFF

LED En

PWM

OFF

PWM On

※ VLED(LED Power supply) should be turn on before PWM on signal and turn off after PWM off signal.

※ PWM On signal should be fixed PWM duty or DC, not variable duty signal while PWM on.

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