LQ104S1DG21 Sharp Microelectronics, LQ104S1DG21 Datasheet - Page 10

• Manufacturer Part Number: LQ104S1DG21
• Description: LCD TFT 10.4" 800X600 SVGA
• Manufacturer: Sharp Microelectronics

Specifications of LQ104S1DG21

• Display Type: LCD - Color
• Display Mode: *
• Viewing Area: 211.20mm L x 158.40mm W
• Dot Pixels: 800 x 600 (SVGA)
• Pixel Density: 800 x 600
• Module Size (w X H X T): 246.5 mm x 179.4 mm x 15.5 mm
• Backlighting: White
• Diagonal: 10.4 in
• Viewing Area (w X H): 211.2 mm x 158.4 mm
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Interface: -
• Backlight: -
• Dot Size: -
• Dot Pitch: -
• Lead Free Status / Rohs Status: Details
• Other names: 425-2472

6-2. Backlight driving
Note1
Note2
Note3 Lamp frequency may produce interference with horizontal synchronous frequency, and this may cause
Note4 The open output voltage of the inverter shall be maintained for more than 1sec; otherwise the lamp
Note5 Since lamp is consumables, the life time written above is referential value and it is not guaranteed in this
Note6 The performance of the backlight, for example life time or brightness, is much influenced by the
Note7 It is required to have the inverter designed so that to allow the impedance deviation of the two CCFT
Lamp current
Lamp power consumption
Lamp frequency
Kick-off voltage
Lamp life time
The backlight system is an edge-lighting type with twin CCFT (Cold Cathode Fluorescent Tube).
The characteristics of single lamp are shown in the following table.
(It is usually required to measure under the following condition.
condition I
(Lamp lifetime may vary if lamp is in portrait position due to the change of mercury density inside the lamp.)
beat on the display. Therefore lamp frequency shall be detached as much as possible from the horizontal
synchronous frequency and from the harmonics of horizontal synchronous to avoid interference.
may not be turned on.
specification sheet by SHARP.
Above value is applicable when lamp (the long side of LCD module) is placed horizontally.
(Landscape position)
In case of operating under lower temp environment, the lamp exhaustion is accelerated and the brightness
becomes lower.
(Continuous operating under for around 1 month under lower temp condition may reduce the brightness to
half of the original brightness.)
In case of such usage under lower temp environment, periodical lamp exchange is recommended.
characteristics of the DC-AC inverter for the lamp. When you design or order the inverter, please make
sure that a poor lighting caused by the mismatch of the backlight and the inverter (miss-lighting, flicker,
etc.) never occur. when you confirm it, the module should be operated in the same condition as it is
installed in your instrument.
Be sure to use a back light power supply with the safety protection circuit such as the detection circuit
for the excess voltage, excess current and or electric discharge waveform.
Be sure to use the detect circuit by which one side of the CCFT lamps can be controlled independently.
Otherwise, when one side of the CCFT is open, the excess current may possibly be applied to the other side
of the lamp.
Recommended inverter is “CXA-P1212B-WJL(TDK corporation)”.
lamps and the capacity deviation of barast capacitor.
Lamp life time is defined that it applied either
Lamp current is measured with current meter for high frequency as shown below.
At the condition of Y
Parameter
(Continuous turning on at Ta=25 , IL=6 or 7mArms)
Brightness becomes 50% of the original value under standard condition.
Kick-off voltage at Ta= -10
L
=6.0mA,Ta=25
L
Symbol
=350cd/m
Vs
P
F
L
L
I
L
L
L
L
L
2 , F
2
50000
30000
Min.
3.5
35
L
exceeds maximum value, 1450 Vrms.
=60kHz.
Typ.
6.0
2.8
60
or
Max.
1000
1300
1450
under this condition.
7.0
70
mArms
Vrms
Vrms
Vrms
hour
hour
Unit
kHz
Ta =-10
Ta=25
Ta =0
Note5 I
Note5 I
Remark
Note1
Note2
Note3
L
L=
Ta=25
=6.0mA
Note4
7.0mA