Product Specification

LP140WF1

Liquid Crystal Display

Ver. 1.0

Oct. 02. 2013

Power Supply

VCC

eDP

Display

HPD

from Sink

Sink

Aux CH

Source

Main Link Data

LED on/off Signal

LED_EN

Dimming signal

Of LED B/L

PWM

Power Supply

VLED

10%

90%

Table 6. POWER SEQUENCE TABLE

Black Video

Video From Source Black Video

Aux Channel Operational

Idle or off

Valid Video Data

Idle

Link

Training

T

10

T

1

T

2

T

11

T

3

T

4

T

7

T

5

T

6

T

8

T

9

T

12

Enabled

PWM

10%

90%

T

13

T

14

T

16

T

15

T

18

T

17

Note) 1. Do not insert the mating cable when system turn on.

2. Valid Data have to meet “3-3. eDP Signal Timing Specifications”

3. Video Signal, LED_EN and PWM need to be on pull-down condition on invalid status.

4. LGD recommend the rising sequence of VLED after the Vcc and valid status of Video Signal turn on.

3-7. Power Sequence

Timing

Required

By

Limits

Units

Notes

Min

Max

T

10

Source

0

500

ms

-

T

11

Source

-

10

ms

-

T

12

Source

500

-

ms

VESA recommend

Min 500ms

T

13

Source

0.5

10

ms

-

T

14

Source

0.5

10

ms

T

15

Source

10

-

ms

-

T

16

Source

10

-

ms

-

T

17

Source

0

-

ms

-

T

18

Source

0

-

ms

-

Timing

Required

By

Limits

Units

Notes

Min

Max

T

1

Source

0.5

10

ms

-

T

2

Sink

0

200

ms

-

T

3

Sink

0

200

ms

-

T

4

Source

-

-

ms

-

T

5

Source

-

-

ms

-

T

6

Source

-

-

ms

-

T

7

Sink

0

50

ms

-

T

8

Source

-

-

ms

LGD recommend

Min 200ms

T

9

Source

-

-

ms

-

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