LQ170E1LG11 Datasheet, PDF (11/23 Pages) Sharp Electrionic Components – TFT LCD MODULE

8
6. Electrical Characteristics
6-1. TFT-LCD panel driving
Parameter
Vcc Supply voltage
Symbol Min.
Vcc
+4.5
Current dissipation
Permissive input ripple voltage
Differential input
High
threshold voltage
Low
Terminal resistor
Icc
V_RF
V_TH
V_TL
R_T
–100
Note1 V_CM : Common mode voltage of LVDS driver.
Typ.
+5.0
T.B.D
100
Ta 25
Max. Unit
Remark
+5.5 V
Note2
T.B.D mA
Note3
100 mVp-p Vcc=+3.3V
+100 mV
mV
V_CM=+1.2V
Note1
Differential input
Note2
1 On-off sequences of Vcc
and data
0.9Vcc
Vc⁰c^.1Vcc
0.9Vcc
0.1Vcc
0.1Vcc
0 t1 10ms
0 t2 10ms
data
t1 t2
t3
t4
0 t3 1s
1s t4
ON
t5
Back light _OFF
OFF
200ms t5
Power sequence for Backlight is not especially specified, however it is recommended to consider some
timing difference between LVDS input and Backlight input as shown above.
If the Backlight lights on before LCD starting, or if the Backlight is kept on after LCD stopping, the screen
may look white for a moment or abnormal image may be displayed.
This is caused by variation in output signal from timing generator at LVDS input on or off. It does not
cause the damage to the LCD module.
2 Dip conditions for supply voltage
1) V2 Vcc V1
td 10ms
2) Vcc V2
Vcc-dip conditions should also
follow the on-off conditions.
V1 : 4.5V
V2 : 3.6V
V2 V1
Note3 Typical current situation : 16-gray-bar pattern
Vcc=+5.0V, CK=54MHz
Horizontal period =15.7 us
Gray scale : GS(4n)
n=0 15
The explanation of each gray scale, GS(4n), is described below section 8-2.