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TW200739474A - Circuit and method for driving backlight module - Google Patents

Circuit and method for driving backlight module

Info

Publication number
TW200739474A
TW200739474A TW095113131A TW95113131A TW200739474A TW 200739474 A TW200739474 A TW 200739474A TW 095113131 A TW095113131 A TW 095113131A TW 95113131 A TW95113131 A TW 95113131A TW 200739474 A TW200739474 A TW 200739474A
Authority
TW
Taiwan
Prior art keywords
backlight module
light source
driving
circuit
time interval
Prior art date
Application number
TW095113131A
Other languages
Chinese (zh)
Other versions
TWI345741B (en
Inventor
Ching-Hui Chou
Li-Wei Mao
Kun-Chang Yang
Original Assignee
Chi Mei Optoelectronics Corp
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 Chi Mei Optoelectronics Corp filed Critical Chi Mei Optoelectronics Corp
Priority to TW95113131A priority Critical patent/TWI345741B/en
Publication of TW200739474A publication Critical patent/TW200739474A/en
Application granted granted Critical
Publication of TWI345741B publication Critical patent/TWI345741B/en

Links

Landscapes

  • Liquid Crystal Display Device Control (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

A circuit for driving a backlight module comprises a control unit generating a driving signal according to a PWM signal. In addition, the circuit comprises a first switch and a second switch. To drive a first light source group of the backlight module, the first switch conducts the driving signal to the backlight module according to a first control signal in a first time interval. To drive a second light source of the backlight module, the second switch conducts the driving signal to the backlight module according to a second control signal in a second time interval to driving a second light source of the backlight module. Wherein, the first time interval and the second time interval do not overlap each other and the first light source group parallel connects to the second light source group.
TW95113131A 2006-04-13 2006-04-13 Circuit and method for driving backlight module TWI345741B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW95113131A TWI345741B (en) 2006-04-13 2006-04-13 Circuit and method for driving backlight module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW95113131A TWI345741B (en) 2006-04-13 2006-04-13 Circuit and method for driving backlight module

Publications (2)

Publication Number Publication Date
TW200739474A true TW200739474A (en) 2007-10-16
TWI345741B TWI345741B (en) 2011-07-21

Family

ID=45074997

Family Applications (1)

Application Number Title Priority Date Filing Date
TW95113131A TWI345741B (en) 2006-04-13 2006-04-13 Circuit and method for driving backlight module

Country Status (1)

Country Link
TW (1) TWI345741B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI391893B (en) * 2007-08-20 2013-04-01 Tli Inc Active display device and mixing type pixel driving method in active display device
TWI392399B (en) * 2008-08-05 2013-04-01 Novatek Microelectronics Corp Light adjusting device for a light emitting diode and related light adjusting method and light emitting device
TWI416994B (en) * 2008-09-24 2013-11-21 Sanyo Electric Co Control circuit for driving light emitting element
TWI416990B (en) * 2009-10-23 2013-11-21 Innolux Corp Light source module, backlight module and control method of light source module

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI391893B (en) * 2007-08-20 2013-04-01 Tli Inc Active display device and mixing type pixel driving method in active display device
TWI392399B (en) * 2008-08-05 2013-04-01 Novatek Microelectronics Corp Light adjusting device for a light emitting diode and related light adjusting method and light emitting device
TWI416994B (en) * 2008-09-24 2013-11-21 Sanyo Electric Co Control circuit for driving light emitting element
TWI416990B (en) * 2009-10-23 2013-11-21 Innolux Corp Light source module, backlight module and control method of light source module

Also Published As

Publication number Publication date
TWI345741B (en) 2011-07-21

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees