ENH050Q1-650 Просмотр технического описания (PDF) - White Electronic Designs => Micro Semi
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ENH050Q1-650 Datasheet PDF : 21 Pages
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White Electronic Designs
Display Systems Division
ENH050Q1-320/450/600
TFT-LCD PANEL DRIVING SECTION
Parameter
Symbol
MIN
TYP
MAX
Unit
Remark
DC bias voltage for common electrode driving signal
VCDC
0
+2.0
+3.0
V
DC component (15)
Terminal voltage applicable to brightness
VBRT
+2.0
+2.3
+2.4
V
Notes:
1. Power supply voltage should not be changed after adjusting VCDC.
2. VR1, VG1, VB1, VR2, VG2, VB2 terminal (Video signal)
3. VBS, VR1, VG1, VB1, VR2, VG2, VB2 terminals
4. HSY, VSY, NTP, VSW, HRV, VRV, SAM CKC, CK terminal
5. HSY, VSY, CK terminals (output mode)
6. CK terminals (output mode)
7. Duty cycle is defined as follows.
tOH
tOL
Duty=tOL/tOH
8. VBS (horizontal sync. component)
9. VBS (vertical sync. component)
10. CK (input mode)
11. HSY (input mode)
12. VSY (input mode)
13. In case of cKC='Lo', it shows the phase different from HSY to CK. In that case,
HSY will be taken at the rise timing of CK.
14. In case of CKC='Lo'. it shows the phase difference from VSY to HSY. In that
case, VSY will be taken at the rise timing of HSY.
15. Adjsuting the optimal voltage on every module at the typical value of power
supply voltage to get the maximum value of contrast. However, in the case that
the power supply voltage is changed, for example the level of power supply
voltage is reduced, adjust it externally to get the best contrast with a resistor you
add to this terminal, or semifixed resistor, VCDC, in module. A recommended circuit
is shown in Fig. 5.
Parameter
Lamp Voltage
Lamp current
Lamp frequency
Kickoff voltage
BACKLIGHT DRIVING SECTION
Symbol
MIN
TYP
MAX
VL7
550
610
670
IL
3.0
6.5
7.0
fL
20
-
70
VS
-
-
1450
-
-
1500
Unit
Vrms
mArms
KHz
Vrms
Vrms
Remark
IL=6.5mArms
normal operation
tA = +25°C
tA = -30°C
POWER COMSUMPTION
tA = 25°C
Parameter
Positive supply current
Negative supply current
Total
Lamp power consumption
Symbol
ISH
ISL
WS
WL
16. Excluding backlight section
17. Reference data by calculation (IL x VL x 1: number of lump)
Conditions
VSH = +8.0V
VSL = -5.0V
normal driving
Circuit Diagram
The circuit block diagram of TFT-LCD module is shown
in Fig. 4.
BRT, VCDC, external adjusting recommended circuit is
shown in Fig. 5.
Caution: Turn the power supply on or off (VSH and VSL)
at the same time. Be careful to supply all power voltage
before inputting signals.
MIN
TYP
MAX
Unit
-
140
170
mA
-
55
70
mA
-
1.4
1.7
W
-
4.0
-
W
Remark
(16)
(17)
Input/Output Signal Waveforms (Fig. 6)
Caution: For the VBS signal, input standard composite
video (or sync.) signal applicable to the operating mode
which have NTSC (M) or PAL (B-G) and is selected by
the NTP signal.
Dimming Backlight by PWM Timing Chart
If using PWM mode, refer to the timing chart shown in
Fig. 7.
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
Original specifications created by Sharp.
August 2003
Rev. 0
5
Display Systems Division • Hillsboro, OR • (503) 690-2460 • www.wedc.com
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