Product Specification

LP140WH4

Liquid Crystal Display

Ver. 1.1

Dec. 17, 2010

11 / 32

Table 4. TIMING TABLE

This is the signal timing required at the input of the User connector. All of the interface signal timing should be

satisfied with the following specifications and specifications of LVDS Tx/Rx for its proper operation.

3-5. Signal Timing Waveforms

Condition : VCC =3.3V

Low: 0.3VCC

High: 0.7VCC

Data Enable, Hsync, Vsync

Hsync

Data Enable

Vsync

Data Enable

t

WH

t

HP

t

HFP

t

HBP

t

VP

t

WV

t

VBP

t

VFP

0.5 Vcc

DCLK

ITEM

Symbol

Min

Typ

Max

Unit

Note

DCLK

Frequency

f

CLK

-

70.0

-

MHz

Hsync

Period

t

HP

1462

1492

1536

tCLK

Width

t

WH

32

48

62

Width-Active

t

WHA

1366

1366

1366

Vsync

Period

t

VP

776

782

792

tHP

Width

t

WV

2

5

8

Width-Active

t

WVA

768

768

768

Data

Enable

Horizontal back porch

t

HBP

34

42

60

tCLK

Horizontal front porch

t

HFP

32

36

40

Vertical back porch

t

VBP

4

6

12

tHP

Vertical front porch

t

VFP

2

3

4

Appendix) All reliabilities are specified for timing specification based on refresh rate of 60 Hz.

Even though actual performance in 50Hz and 40Hz for low power is displayed normally,

remark and inform to user that display quality in 40 Hz and 50 Hz is out of guarantee range.

3-4. Signal Timing Specifications