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V420H2-LE4 Schematic ( PDF Datasheet ) - CMI MEI

Teilenummer V420H2-LE4
Beschreibung TFT LCD Module
Hersteller CMI MEI
Logo CMI MEI Logo 




Gesamt 30 Seiten
V420H2-LE4 Datasheet, Funktion
PRODUCT SPECIFICATION
Tentative Specification
Preliminary Specification
Approval Specification
MODEL NO.: V420H2
SUFFIX: LE4
Customer:
APPROVED BY
Name / Title
Note
SIGNATURE
Please return 1 copy for your confirmation with your signature
and comments.
Approved By
Chao-Chun Chung
Checked By
Ken Wu
Prepared By
Peggi Chiu
Version 2.1
1 Date18 Aug. 2010
The copyright belongs to CHIMEI InnoLux. Any unauthorized use is prohibited






V420H2-LE4 Datasheet, Funktion
PRODUCT SPECIFICATION
2. ABSOLUTE MAXIMUM RATINGS
2.1 ABSOLUTE RATINGS OF ENVIRONMENT
Item
Storage Temperature
Operating Ambient Temperature
Shock (Non-Operating)
Vibration (Non-Operating)
Symbol
TST
TOP
SNOP
VNOP
Value
Min. Max.
-20 +60
0 +50
- 35
- 1.0
Note (1) Temperature and relative humidity range is shown in the figure below.
Unit Note
ºC (1)
ºC (1), (2)
G (3), (5)
G (4), (5)
(a) 90 %RH Max. (Ta 40 ºC).
(b) Wet-bulb temperature should be 39 ºC Max. (Ta > 40 ºC).
(c) No condensation.
Note (2) The maximum operating temperature is based on the test condition that the surface temperature of
display area is less than or equal to 65 ºC with LCD module alone in a temperature controlled chamber.
Thermal management should be considered in final product design to prevent the surface temperature of
display area from being over 65 ºC. The range of operating temperature may degrade in case of improper
thermal management in final product design.
Note (3) 11 ms, half sine wave, 1 time for ± X, ± Y, ± Z.
Note (4) 10 ~ 200 Hz, 10 min, 1 time each X, Y, Z.
Note (5) At testing Vibration and Shock, the fixture in holding the module has to be hard and rigid enough so
that the module would not be twisted or bent by the fixture.
Relative Humidity (%RH)
100
90
80
60
Operating Range
40
20
10 Storage Range
-40 -20
0 20 40 60 80
Temperature (ºC)
Version 2.1
6 Date18 Aug. 2010
The copyright belongs to CHIMEI InnoLux. Any unauthorized use is prohibited

6 Page









V420H2-LE4 pdf, datenblatt
PRODUCT SPECIFICATION
3.2.3 CONVERTER INTERFACE CHARACTERISTICS
External dimming: 150Hz~170Hz, duty ratio: 10%~100%
Parameter
Test Value
Symbol
Unit
Condition Min. Typ. Max.
Note
On/Off Control Voltage
ON
VBLON
OFF
2.0 5.0
0 0.8
V
V
Internal PWM Control
Voltage
MAX
VIPWM
MIN
3.15 3.45 V maximum duty ratio
0 V minimum duty ratio
External PWM Control
Voltage
HI
LO VEPWM
2.0 5.0
0 0.8
V
V
Duty on
Duty off
Status Signal
HI
3.0 3.3 3.6
V
Status
LO
0
0.8
V
Normal
Abnormal
VBL Rising Time
VBL Falling Time
Tr1 30 - - ms
10%-90%VBL
Tf1 30 - - ms
Control Signal Rising Time
Tr - - - 100 ms
Control Signal Falling Time
Tf - - - 100 ms
PWM Signal Rising Time
TPWMR
- - 50 us
PWM Signal Falling Time
TPWMF
- - 50 us
Input Impedance
Rin 1 - - M
PWM Delay Time
TPWM 100 - - ms
BLON Delay Time
Ton 300 - - ms
Ton1 300 - - ms
BLON Off Time
Toff 300 - - ms
Note (1) The Dimming signal should be valid before backlight turns on by BLON signal. It is inhibited to
change the internal/external PWM signal during backlight turn on period.
Note (2) The power sequence and control signal timing are shown in the following figure. For a certain
reason, the converter has a possibility to be damaged with wrong power sequence and control
signal timing.
Note (3) While system is turned ON or OFF, the power sequences must follow as below descriptions:
Turn ON sequence: VBL PWM signal BLON
Turn OFF sequence: BLOFF PWM signal VBL
Version 2.1
12 Date18 Aug. 2010
The copyright belongs to CHIMEI InnoLux. Any unauthorized use is prohibited

12 Page





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