LQ14D412 Datasheet, PDF (9/19 Pages) Sharp Electrionic Components – TENRI LIQUID CRYSTAL DISPLAY GROUP SHARP CORPORATION SPECIFICATION

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7-2. Horizontal display position
The horizontal display position is determined by ENAB signal and the input data corresponding
to the rising edge of ENAB signal is displayed at the left end of the active area.
Parameter
symbol Min. Typ. Max. Utit Remark
ENAB signal Setup time
Tes 5
–
Tc- 10 ns
Pulse width
Tep 10 640 640 clock
Hsync-ENAB phase difference
THe 44
–
164 clock
Note) When ENAB is fixed “Low”, the display starts from the data of C104(clock) as shown
in Fig.2-@z@. When ENAB is fixed “High’*, the display starts from the data of C48(clock).
7-3. Vertical display position
The vertical display position is automatically centered in the active area at each mode
of VGA ,480 -,400 -,and 350-line mode . Each mode is selected depending on the polarity of
the synchronous signals described in 4-1 (Notel ).
In each mode ,the data of TVn is displayed at the top line of the active area. And the
display position will be centered on the screen like the following figure when the period of
vertical synchronous signal, TV,is typical value.
In 400-, and 350-line mode, the data in the vertical data invalid period is also displayed,
So ,inputting all data “O” is recommended during vertical data invalid period.
ENAB signal has no relation to the vertical display position.
& v-data Staqrvs) V-data period(TVd) Vdisplay start(TVn)
480
34
480
34
m
34
400
443-TV
350
61
350
445-W
Vdisplay peliod unit
480 k
480 k
480 k
Remark
m _u
4 Ollrlm
4oolim
4 Olilwa
400 1 ines mode (TV=449)
66 lirma
3501inu
6 Slinu
350 lines mode (TV=449) ‘