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 same

Info

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
Application number
TW97113227A
Other languages
Chinese (zh)
Other versions
TWI397347B (en
Inventor
Shwang-Shi Bai
I-Sheng Lin
Hsiu-Na Hsieh
Shu-Ming Chang
Original Assignee
Himax Tech Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Himax Tech Ltd filed Critical Himax Tech Ltd
Priority to TW97113227A priority Critical patent/TWI397347B/en
Publication of TW200944054A publication Critical patent/TW200944054A/en
Application granted granted Critical
Publication of TWI397347B publication Critical patent/TWI397347B/en

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.
TW97113227A 2008-04-11 2008-04-11 Inverter circuit for driving a lamp and backlight module using the same TWI397347B (en)

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)

* Cited by examiner, † Cited by third party
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

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