TW200944054A - Inverter circuit for driving a lamp and backlight module using the same - Google Patents
Inverter circuit for driving a lamp and backlight module using the sameInfo
- Publication number
- TW200944054A TW200944054A TW97113227A TW97113227A TW200944054A TW 200944054 A TW200944054 A TW 200944054A TW 97113227 A TW97113227 A TW 97113227A TW 97113227 A TW97113227 A TW 97113227A TW 200944054 A TW200944054 A TW 200944054A
- Authority
- TW
- Taiwan
- Prior art keywords
- signal
- inverter circuit
- driving
- terminal
- lamp
- Prior art date
Links
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Abstract
An inverter circuit for driving a lamp and a backlight module using the same are provided. The inverter circuit includes a signal generation module, a switching unit, a first capacitor, a transformer and a first detecting module. The signal generation module generates a pulse width modulation (PWM) signal, wherein the duty cycle of the PWM signal is controlled by a feedback signal and a sensed signal. The switching unit has a control terminal receiving the PWM signal, and has a first current terminal and a second current terminal respectively coupled to a first terminal and a second terminal of the first capacitor. The transformer generates an AC driving signal to the lamp according to a signal variation of the primary winding coupled the first current terminal of the first transistor. The first detecting module generates the sensed signal according to the flowing current of the switching unit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW97113227A TWI397347B (en) | 2008-04-11 | 2008-04-11 | Inverter circuit for driving a lamp and backlight module using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW97113227A TWI397347B (en) | 2008-04-11 | 2008-04-11 | Inverter circuit for driving a lamp and backlight module using the same |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200944054A true TW200944054A (en) | 2009-10-16 |
TWI397347B TWI397347B (en) | 2013-05-21 |
Family
ID=44869162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW97113227A TWI397347B (en) | 2008-04-11 | 2008-04-11 | Inverter circuit for driving a lamp and backlight module using the same |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI397347B (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI246821B (en) * | 2002-12-25 | 2006-01-01 | Rohm Co Ltd | Parallel operation system for dc-ac converting device and its controller IC |
KR101029428B1 (en) * | 2004-06-30 | 2011-04-14 | 엘지디스플레이 주식회사 | Apparatus for driving lamp of liquid crystal display device |
TW200723663A (en) * | 2005-12-01 | 2007-06-16 | Beyond Innovation Tech Co Ltd | Power supply device |
-
2008
- 2008-04-11 TW TW97113227A patent/TWI397347B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
TWI397347B (en) | 2013-05-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |